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Annotation of palm/Palm-Keyring/lib/Palm/Keyring.pm, Revision 1.49

1.14      andrew      1: package Palm::Keyring;
1.49    ! andrew      2: # $RedRiver: Keyring.pm,v 1.48 2007/09/12 02:44:36 andrew Exp $
1.27      andrew      3: ########################################################################
                      4: # Keyring.pm *** Perl class for Keyring for Palm OS databases.
                      5: #
                      6: #   This started as Memo.pm, I just made it work for Keyring.
1.1       andrew      7: #
1.27      andrew      8: # 2006.01.26 #*#*# andrew fresh <andrew@cpan.org>
                      9: ########################################################################
                     10: # Copyright (C) 2006, 2007 by Andrew Fresh
1.1       andrew     11: #
1.27      andrew     12: # This program is free software; you can redistribute it and/or modify
                     13: # it under the same terms as Perl itself.
                     14: ########################################################################
1.1       andrew     15: use strict;
1.14      andrew     16: use warnings;
1.27      andrew     17:
1.14      andrew     18: use Carp;
                     19:
                     20: use base qw/ Palm::StdAppInfo /;
1.1       andrew     21:
1.24      andrew     22: my $ENCRYPT    = 1;
                     23: my $DECRYPT    = 0;
                     24: my $MD5_CBLOCK = 64;
                     25: my $kSalt_Size = 4;
                     26: my $EMPTY      = q{};
                     27: my $SPACE      = q{ };
                     28: my $NULL       = chr 0;
1.14      andrew     29:
1.28      andrew     30: my @CRYPTS = (
1.34      andrew     31:     {
                     32:         alias     => 'None',
1.28      andrew     33:         name      => 'None',
                     34:         keylen    => 8,
                     35:         blocksize => 1,
1.29      andrew     36:         default_iter => 500,
1.28      andrew     37:     },
1.34      andrew     38:     {
                     39:         alias     => 'DES-EDE3',
1.28      andrew     40:         name      => 'DES_EDE3',
                     41:         keylen    => 24,
                     42:         blocksize =>  8,
                     43:         DES_odd_parity => 1,
1.29      andrew     44:         default_iter => 1000,
1.28      andrew     45:     },
1.34      andrew     46:     {
                     47:         alias     => 'AES128',
1.28      andrew     48:         name      => 'Rijndael',
                     49:         keylen    => 16,
                     50:         blocksize => 16,
1.29      andrew     51:         default_iter => 100,
1.28      andrew     52:     },
1.34      andrew     53:     {
                     54:         alias     => 'AES256',
1.28      andrew     55:         name      => 'Rijndael',
                     56:         keylen    => 32,
                     57:         blocksize => 16,
1.29      andrew     58:         default_iter => 250,
1.28      andrew     59:     },
                     60: );
                     61:
1.46      andrew     62: my %LABELS = (
                     63:     0 => {
                     64:         id   => 0,
                     65:         name => 'name',
                     66:     },
                     67:     1 => {
                     68:         id   => 1,
                     69:         name => 'account',
                     70:     },
                     71:     2 => {
                     72:         id   => 2,
                     73:         name => 'password',
                     74:     },
                     75:     3 => {
                     76:         id   => 3,
                     77:         name => 'lastchange',
                     78:     },
                     79:     255 => {
                     80:         id   => 255,
                     81:         name => 'notes',
                     82:     },
                     83: );
                     84:
1.1       andrew     85:
1.47      andrew     86: our $VERSION = '0.96_01';
1.28      andrew     87:
                     88: sub new
                     89: {
1.14      andrew     90:     my $classname = shift;
1.28      andrew     91:     my $options = {};
                     92:
1.46      andrew     93:     if (@_) {
                     94:         # hashref arguments
                     95:         if (ref $_[0] eq 'HASH') {
                     96:           $options = shift;
                     97:         }
                     98:
                     99:         # CGI style arguments
                    100:         elsif ($_[0] =~ /^-[a-zA-Z0-9_]{1,20}$/) {
                    101:           my %tmp = @_;
                    102:           while ( my($key,$value) = each %tmp) {
                    103:             $key =~ s/^-//;
                    104:             $options->{lc $key} = $value;
                    105:           }
                    106:         }
                    107:
                    108:         else {
                    109:             $options->{password} = shift;
                    110:             $options->{version}  = shift;
                    111:         }
1.28      andrew    112:     }
1.1       andrew    113:
1.14      andrew    114:     # Create a generic PDB. No need to rebless it, though.
1.28      andrew    115:     my $self = $classname->SUPER::new();
1.1       andrew    116:
1.28      andrew    117:     $self->{name}    = 'Keys-Gtkr';    # Default
                    118:     $self->{creator} = 'Gtkr';
                    119:     $self->{type}    = 'Gkyr';
1.14      andrew    120:
                    121:     # The PDB is not a resource database by
                    122:     # default, but it's worth emphasizing,
                    123:     # since MemoDB is explicitly not a PRC.
1.28      andrew    124:     $self->{attributes}{resource} = 0;
1.1       andrew    125:
1.28      andrew    126:     # Set the version
                    127:     $self->{version} = $options->{version} || 4;
1.1       andrew    128:
1.28      andrew    129:     # Set options
                    130:     $self->{options} = $options;
1.1       andrew    131:
1.29      andrew    132:     # Set defaults
                    133:     if ($self->{version} == 5) {
                    134:         $self->{options}->{cipher} ||= 0; # 'None'
1.39      andrew    135:         my $c = crypts($self->{options}->{cipher})
                    136:             or croak('Unknown cipher ' . $self->{options}->{cipher});
                    137:         $self->{options}->{iterations} ||= $c->{default_iter};
                    138:         $self->{appinfo}->{cipher} ||= $self->{options}->{cipher};
                    139:         $self->{appinfo}->{iter}   ||= $self->{options}->{iterations};
1.29      andrew    140:     };
                    141:
1.28      andrew    142:     if ( defined $options->{password} ) {
                    143:         $self->Password($options->{password});
1.14      andrew    144:     }
1.1       andrew    145:
1.14      andrew    146:     return $self;
                    147: }
1.1       andrew    148:
1.28      andrew    149: sub import
                    150: {
1.14      andrew    151:     Palm::PDB::RegisterPDBHandlers( __PACKAGE__, [ 'Gtkr', 'Gkyr' ], );
                    152:     return 1;
                    153: }
1.1       andrew    154:
1.34      andrew    155: # Accessors
                    156:
                    157: sub crypts
                    158: {
                    159:     my $crypt = shift;
1.46      andrew    160:     if ((! defined $crypt) || (! length $crypt)) {
1.39      andrew    161:         return;
                    162:     } elsif ($crypt =~ /\D/) {
1.34      andrew    163:         foreach my $c (@CRYPTS) {
                    164:             if ($c->{alias} eq $crypt) {
                    165:                 return $c;
                    166:             }
                    167:         }
                    168:         # didn't find it.
                    169:         return;
                    170:     } else {
                    171:         return $CRYPTS[$crypt];
                    172:     }
                    173: }
                    174:
1.46      andrew    175: sub labels
                    176: {
                    177:     my $label = shift;
                    178:
                    179:     if ((! defined $label) || (! length $label)) {
                    180:         return;
                    181:     } elsif (exists $LABELS{$label}) {
                    182:         return $LABELS{$label};
                    183:     } else {
                    184:         foreach my $l (keys %LABELS) {
                    185:             if ($LABELS{$l}{name} eq $label) {
                    186:                 return $LABELS{$l};
                    187:             }
                    188:         }
                    189:
                    190:         # didn't find it, make one.
                    191:         if ($label =~ /^\d+$/) {
                    192:             return {
                    193:                 id => $label,
                    194:                 name => undef,
                    195:             };
                    196:         } else {
                    197:             return;
                    198:         }
                    199:     }
                    200: }
                    201:
                    202: # Write
                    203:
                    204: sub Write
                    205: {
                    206:     my $self = shift;
                    207:
                    208:     if ($self->{version} == 4) {
                    209:        # Give the PDB the first record that will hold the encrypted password
                    210:         my $rec = $self->new_Record;
                    211:         $rec->{data} = $self->{encpassword};
                    212:
                    213:         if (ref $self->{records} eq 'ARRAY') {
                    214:             unshift @{ $self->{records} }, $rec;
                    215:         } else {
                    216:             $self->{records} = [ $rec ];
                    217:         }
                    218:     }
                    219:
                    220:     my $rc = $self->SUPER::Write(@_);
                    221:
                    222:     if ($self->{version} == 4) {
                    223:         shift @{ $self->{records} };
                    224:     }
                    225:
                    226:     return $rc;
                    227: }
                    228:
1.29      andrew    229: # ParseRecord
1.28      andrew    230:
                    231: sub ParseRecord
                    232: {
1.14      andrew    233:     my $self     = shift;
                    234:
1.16      andrew    235:     my $rec = $self->SUPER::ParseRecord(@_);
1.28      andrew    236:     return $rec if ! exists $rec->{data};
                    237:
                    238:     if ($self->{version} == 4) {
                    239:         # skip the first record because it contains the password.
1.46      andrew    240:         if (! exists $self->{records}) {
                    241:             $self->{encpassword} = $rec->{data};
                    242:             return '__DELETE_ME__';
                    243:         }
                    244:
                    245:         if ($self->{records}->[0] eq '__DELETE_ME__') {
                    246:             shift @{ $self->{records} };
                    247:         }
1.28      andrew    248:
                    249:         my ( $name, $encrypted ) = split /$NULL/xm, $rec->{data}, 2;
                    250:
                    251:         return $rec if ! $encrypted;
1.48      andrew    252:         $rec->{plaintext}->{0} = {
1.46      andrew    253:             label => 'name',
                    254:             label_id => 0,
                    255:             data  => $name,
                    256:             font  => 0,
                    257:         };
1.28      andrew    258:         $rec->{encrypted} = $encrypted;
                    259:         delete $rec->{data};
                    260:
                    261:     } elsif ($self->{version} == 5) {
1.39      andrew    262:         my $c = crypts( $self->{appinfo}->{cipher} )
                    263:             or croak('Unknown cipher ' . $self->{appinfo}->{cipher});
                    264:         my $blocksize = $c->{blocksize};
1.28      andrew    265:         my ($field, $extra) = _parse_field($rec->{data});
1.37      andrew    266:         delete $rec->{data};
1.16      andrew    267:
1.48      andrew    268:         $rec->{plaintext}->{0} = $field;
1.37      andrew    269:         $rec->{ivec}      = substr $extra, 0, $blocksize;
                    270:         $rec->{encrypted} = substr $extra, $blocksize;
1.28      andrew    271:
                    272:     } else {
1.46      andrew    273:         croak "Unsupported Version $self->{version}";
1.28      andrew    274:         return;
                    275:     }
1.12      andrew    276:
1.16      andrew    277:     return $rec;
1.14      andrew    278: }
1.11      andrew    279:
1.28      andrew    280: # PackRecord
                    281:
                    282: sub PackRecord
                    283: {
1.16      andrew    284:     my $self = shift;
                    285:     my $rec  = shift;
                    286:
1.28      andrew    287:     if ($self->{version} == 4) {
                    288:         if ($rec->{encrypted}) {
1.48      andrew    289:             my $name = $rec->{plaintext}->{0}->{data} || $EMPTY;
1.46      andrew    290:             $rec->{data} = join $NULL, $name, $rec->{encrypted};
1.48      andrew    291:             delete $rec->{plaintext};
1.28      andrew    292:             delete $rec->{encrypted};
                    293:         }
1.29      andrew    294:
1.28      andrew    295:     } elsif ($self->{version} == 5) {
1.37      andrew    296:         my $field;
1.48      andrew    297:         if ($rec->{plaintext}->{0}) {
                    298:             $field = $rec->{plaintext}->{0};
1.37      andrew    299:         } else {
                    300:             $field = {
1.46      andrew    301:                 'label'    => 'name',
                    302:                 'label_id' => 0,
1.37      andrew    303:                 'data'     => $EMPTY,
                    304:                 'font'     => 0,
                    305:             };
                    306:         }
                    307:         my $packed = _pack_field($field);
1.29      andrew    308:
1.46      andrew    309:         $rec->{data} = join $EMPTY, $packed, $rec->{ivec}, $rec->{encrypted};
1.29      andrew    310:
1.28      andrew    311:     } else {
1.46      andrew    312:         croak "Unsupported Version $self->{version}";
1.16      andrew    313:     }
1.1       andrew    314:
1.16      andrew    315:     return $self->SUPER::PackRecord($rec, @_);
1.14      andrew    316: }
1.1       andrew    317:
1.28      andrew    318: # ParseAppInfoBlock
                    319:
                    320: sub ParseAppInfoBlock
                    321: {
                    322:     my $self = shift;
                    323:     my $data = shift;
                    324:     my $appinfo = {};
                    325:
                    326:     &Palm::StdAppInfo::parse_StdAppInfo($appinfo, $data);
                    327:
                    328:     # int8/uint8
                    329:     # - Signed or Unsigned Byte (8 bits). C types: char, unsigned char
                    330:     # int16/uint16
                    331:     # - Signed or Unsigned Word (16 bits). C types: short, unsigned short
                    332:     # int32/uint32
                    333:     # - Signed or Unsigned Doubleword (32 bits). C types: int, unsigned int
                    334:     # sz
                    335:     # - Zero-terminated C-style string
                    336:
                    337:     if ($self->{version} == 4) {
                    338:         # Nothing extra for version 4
                    339:
                    340:     } elsif ($self->{version} == 5) {
                    341:         _parse_appinfo_v5($appinfo) || return;
                    342:
                    343:     } else {
1.46      andrew    344:         croak "Unsupported Version $self->{version}";
1.28      andrew    345:     }
                    346:
                    347:     return $appinfo;
                    348: }
                    349:
                    350: sub _parse_appinfo_v5
                    351: {
                    352:     my $appinfo = shift;
                    353:
                    354:     if (! exists $appinfo->{other}) {
                    355:         # XXX Corrupt appinfo?
                    356:         return;
                    357:     }
                    358:
                    359:     my $unpackstr
                    360:         = ("C1" x 8)  # 8 uint8s in an array for the salt
1.35      andrew    361:         . ("n1" x 2)  # the iter (uint16) and the cipher (uint16)
1.28      andrew    362:         . ("C1" x 8); # and finally 8 more uint8s for the hash
                    363:
                    364:     my (@salt, $iter, $cipher, @hash);
                    365:     (@salt[0..7], $iter, $cipher, @hash[0..7])
                    366:         = unpack $unpackstr, $appinfo->{other};
                    367:
                    368:     $appinfo->{salt}           = sprintf "%02x" x 8, @salt;
                    369:     $appinfo->{iter}           = $iter;
                    370:     $appinfo->{cipher}         = $cipher;
                    371:     $appinfo->{masterhash}     = sprintf "%02x" x 8, @hash;
                    372:     delete $appinfo->{other};
                    373:
                    374:     return $appinfo
                    375: }
                    376:
                    377: # PackAppInfoBlock
                    378:
                    379: sub PackAppInfoBlock
                    380: {
                    381:     my $self = shift;
                    382:     my $retval;
                    383:
                    384:     if ($self->{version} == 4) {
                    385:         # Nothing to do for v4
                    386:
                    387:     } elsif ($self->{version} == 5) {
1.29      andrew    388:         _pack_appinfo_v5($self->{appinfo});
1.28      andrew    389:     } else {
1.46      andrew    390:         croak "Unsupported Version $self->{version}";
1.28      andrew    391:     }
                    392:     return &Palm::StdAppInfo::pack_StdAppInfo($self->{appinfo});
                    393: }
                    394:
1.29      andrew    395: sub _pack_appinfo_v5
                    396: {
                    397:     my $appinfo = shift;
                    398:
                    399:     my $packstr
                    400:         = ("C1" x 8)  # 8 uint8s in an array for the salt
1.35      andrew    401:         . ("n1" x 2)  # the iter (uint16) and the cipher (uint16)
1.29      andrew    402:         . ("C1" x 8); # and finally 8 more uint8s for the hash
                    403:
                    404:     my @salt = map { hex $_ } $appinfo->{salt} =~ /../gxm;
                    405:     my @hash = map { hex $_ } $appinfo->{masterhash} =~ /../gxm;
                    406:
                    407:     my $packed = pack($packstr,
                    408:         @salt,
                    409:         $appinfo->{iter},
                    410:         $appinfo->{cipher},
                    411:         @hash
                    412:     );
                    413:
                    414:     $appinfo->{other}  = $packed;
                    415:
                    416:     return $appinfo
                    417: }
                    418:
1.28      andrew    419: # Encrypt
                    420:
                    421: sub Encrypt
                    422: {
1.14      andrew    423:     my $self = shift;
1.16      andrew    424:     my $rec  = shift;
1.28      andrew    425:     my $pass = shift || $self->{password};
1.48      andrew    426:     my $data = shift || $rec->{plaintext};
1.34      andrew    427:     my $ivec = shift;
1.16      andrew    428:
1.29      andrew    429:     if ( ! $pass && ! $self->{appinfo}->{key}) {
1.28      andrew    430:         croak("password not set!\n");
1.16      andrew    431:     }
                    432:
                    433:     if ( ! $rec) {
                    434:         croak("Needed parameter 'record' not passed!\n");
                    435:     }
1.14      andrew    436:
1.16      andrew    437:     if ( ! $data) {
1.48      andrew    438:         croak("Needed 'plaintext' not passed!\n");
1.14      andrew    439:     }
                    440:
1.29      andrew    441:     if ( $pass && ! $self->Password($pass)) {
1.16      andrew    442:         croak("Incorrect Password!\n");
                    443:     }
1.14      andrew    444:
1.29      andrew    445:     my $acct;
                    446:     if ($rec->{encrypted}) {
                    447:         $acct = $self->Decrypt($rec, $pass);
                    448:     }
                    449:
                    450:     my $encrypted;
1.28      andrew    451:     if ($self->{version} == 4) {
                    452:         $self->{digest} ||= _calc_keys( $pass );
1.46      andrew    453:         my $datav4 = {
                    454:             name       => $data->{0}->{data},
                    455:             account    => $data->{1}->{data},
                    456:             password   => $data->{2}->{data},
                    457:             lastchange => $data->{3}->{data},
                    458:             notes      => $data->{255}->{data},
                    459:         };
                    460:         my $acctv4 = {
                    461:             name       => $acct->{0}->{data},
                    462:             account    => $acct->{1}->{data},
                    463:             password   => $acct->{2}->{data},
                    464:             lastchange => $acct->{3}->{data},
                    465:             notes      => $acct->{255}->{data},
                    466:         };
                    467:         $encrypted = _encrypt_v4($datav4, $acctv4, $self->{digest});
1.29      andrew    468:
                    469:     } elsif ($self->{version} == 5) {
                    470:         ($encrypted, $ivec) = _encrypt_v5(
1.46      andrew    471:             $data, $acct,
1.29      andrew    472:             $self->{appinfo}->{key},
                    473:             $self->{appinfo}->{cipher},
1.34      andrew    474:             $ivec,
1.29      andrew    475:         );
1.34      andrew    476:         if (defined $ivec) {
1.29      andrew    477:             $rec->{ivec} = $ivec;
1.28      andrew    478:         }
1.29      andrew    479:
                    480:     } else {
1.46      andrew    481:         croak "Unsupported Version $self->{version}";
1.29      andrew    482:     }
                    483:
1.48      andrew    484:     $rec->{plaintext}->{0} = $data->{0};
1.46      andrew    485:
1.29      andrew    486:     if ($encrypted) {
                    487:         if ($encrypted eq '1') {
1.28      andrew    488:             return 1;
                    489:         }
1.29      andrew    490:
                    491:         $rec->{attributes}{Dirty} = 1;
                    492:         $rec->{attributes}{dirty} = 1;
                    493:         $rec->{encrypted} = $encrypted;
                    494:
                    495:         return 1;
1.28      andrew    496:     } else {
1.29      andrew    497:         return;
1.28      andrew    498:     }
                    499: }
1.14      andrew    500:
1.28      andrew    501: sub _encrypt_v4
                    502: {
1.29      andrew    503:     my $new    = shift;
                    504:     my $old    = shift;
1.28      andrew    505:     my $digest = shift;
                    506:
1.29      andrew    507:     $new->{account}  ||= $EMPTY;
                    508:     $new->{password} ||= $EMPTY;
                    509:     $new->{notes}    ||= $EMPTY;
1.1       andrew    510:
1.22      andrew    511:     my $changed      = 0;
                    512:     my $need_newdate = 0;
1.29      andrew    513:     if ($old && %{ $old }) {
1.46      andrew    514:         no warnings 'uninitialized';
1.29      andrew    515:         foreach my $key (keys %{ $new }) {
1.22      andrew    516:             next if $key eq 'lastchange';
1.29      andrew    517:             if ($new->{$key} ne $old->{$key}) {
1.22      andrew    518:                 $changed = 1;
                    519:                 last;
                    520:             }
                    521:         }
1.29      andrew    522:         if ( exists $new->{lastchange} && exists $old->{lastchange} && (
                    523:             $new->{lastchange}->{day}   != $old->{lastchange}->{day}   ||
                    524:             $new->{lastchange}->{month} != $old->{lastchange}->{month} ||
                    525:             $new->{lastchange}->{year}  != $old->{lastchange}->{year}
1.22      andrew    526:         )) {
                    527:             $changed = 1;
                    528:             $need_newdate = 0;
                    529:         } else {
                    530:             $need_newdate = 1;
                    531:         }
                    532:
                    533:     } else {
                    534:         $changed = 1;
                    535:     }
                    536:
                    537:     # no need to re-encrypt if it has not changed.
                    538:     return 1 if ! $changed;
                    539:
1.21      andrew    540:     my ($day, $month, $year);
                    541:
1.29      andrew    542:     if ($new->{lastchange} && ! $need_newdate ) {
                    543:         $day   = $new->{lastchange}->{day}   || 1;
                    544:         $month = $new->{lastchange}->{month} || 0;
                    545:         $year  = $new->{lastchange}->{year}  || 0;
1.22      andrew    546:
                    547:         # XXX Need to actually validate the above information somehow
                    548:         if ($year >= 1900) {
                    549:             $year -= 1900;
                    550:         }
                    551:     } else {
                    552:         $need_newdate = 1;
                    553:     }
                    554:
                    555:     if ($need_newdate) {
1.21      andrew    556:         ($day, $month, $year) = (localtime)[3,4,5];
                    557:     }
1.22      andrew    558:
1.29      andrew    559:     my $packed_date = _pack_keyring_date( {
1.28      andrew    560:             year  => $year,
                    561:             month => $month,
                    562:             day   => $day,
                    563:     });
1.19      andrew    564:
1.16      andrew    565:     my $plaintext = join $NULL,
1.29      andrew    566:         $new->{account}, $new->{password}, $new->{notes}, $packed_date;
1.1       andrew    567:
1.28      andrew    568:     return _crypt3des( $plaintext, $digest, $ENCRYPT );
                    569: }
1.11      andrew    570:
1.29      andrew    571: sub _encrypt_v5
                    572: {
                    573:     my $new    = shift;
                    574:     my $old    = shift;
                    575:     my $key    = shift;
                    576:     my $cipher = shift;
1.34      andrew    577:     my $ivec   = shift;
1.39      andrew    578:     my $c = crypts($cipher) or croak('Unknown cipher ' . $cipher);
1.29      andrew    579:
1.34      andrew    580:     if (! defined $ivec) {
1.39      andrew    581:         $ivec = pack("C*",map {rand(256)} 1..$c->{blocksize});
1.34      andrew    582:     }
                    583:
1.29      andrew    584:     my $changed = 0;
                    585:     my $need_newdate = 1;
1.46      andrew    586:     if ($new->{3}->{data}) {
                    587:         $need_newdate = 0;
                    588:     }
                    589:     foreach my $k (keys %{ $new }) {
                    590:         if (! $old) {
                    591:             $changed = 1;
                    592:         } elsif ($k == 3) {
                    593:             if ($old && (
                    594:                     $new->{$k}{data}{day}   == $old->{$k}{data}{day}   &&
                    595:                     $new->{$k}{data}{month} == $old->{$k}{data}{month} &&
                    596:                     $new->{$k}{data}{year}  == $old->{$k}{data}{year}
1.29      andrew    597:                 )) {
                    598:                 $changed      = 1;
1.46      andrew    599:                 $need_newdate = 1;
1.29      andrew    600:             }
                    601:
1.46      andrew    602:         } else {
                    603:             my $n = join ':', sort %{ $new->{$k} };
                    604:             my $o = join ':', sort %{ $old->{$k} };
1.29      andrew    605:             if ($n ne $o) {
                    606:                 $changed = 1;
                    607:             }
                    608:         }
                    609:     }
                    610:
                    611:     return 1, 0 if $changed == 0;
                    612:
1.46      andrew    613:     if ($need_newdate) {
1.29      andrew    614:         my ($day, $month, $year) = (localtime)[3,4,5];
1.46      andrew    615:         $new->{3} = {
                    616:             label => 'lastchange',
                    617:             label_id => 3,
                    618:             font  => 0,
                    619:             data => {
                    620:                 year  => $year,
                    621:                 month => $month,
                    622:                 day   => $day,
1.47      andrew    623:            },
1.29      andrew    624:         };
                    625:     } else {
                    626:         # XXX Need to actually validate the above information somehow
1.46      andrew    627:         if ($new->{3}->{data}->{year} >= 1900) {
                    628:             $new->{3}->{data}->{year} -= 1900;
1.29      andrew    629:         }
                    630:     }
                    631:
1.48      andrew    632:     my $plaintext;
1.46      andrew    633:     foreach my $k (keys %{ $new }) {
1.48      andrew    634:         $plaintext .= _pack_field($new->{$k});
1.29      andrew    635:     }
1.46      andrew    636:
1.29      andrew    637:     my $encrypted;
1.39      andrew    638:     if ($c->{name} eq 'None') {
1.29      andrew    639:         # do nothing
1.48      andrew    640:         $encrypted = $plaintext;
1.29      andrew    641:
1.39      andrew    642:     } elsif ($c->{name} eq 'DES_EDE3' or $c->{name} eq 'Rijndael') {
1.35      andrew    643:         require Crypt::CBC;
1.39      andrew    644:         my $cbc = Crypt::CBC->new(
1.35      andrew    645:             -key         => $key,
1.29      andrew    646:             -literal_key => 1,
                    647:             -iv          => $ivec,
1.39      andrew    648:             -cipher      => $c->{name},
                    649:             -keysize     => $c->{keylen},
                    650:             -blocksize   => $c->{blocksize},
1.29      andrew    651:             -header      => 'none',
                    652:             -padding     => 'oneandzeroes',
                    653:         );
                    654:
                    655:         if (! $c) {
                    656:             croak("Unable to set up encryption!");
                    657:         }
                    658:
1.48      andrew    659:         $encrypted = $cbc->encrypt($plaintext);
1.29      andrew    660:
                    661:     } else {
1.46      andrew    662:         croak "Unsupported Crypt $c->{name}";
1.29      andrew    663:     }
                    664:
                    665:     return $encrypted, $ivec;
                    666: }
                    667:
1.28      andrew    668: # Decrypt
1.1       andrew    669:
1.31      andrew    670: sub Decrypt
1.28      andrew    671: {
1.14      andrew    672:     my $self = shift;
1.16      andrew    673:     my $rec  = shift;
1.28      andrew    674:     my $pass = shift || $self->{password};
1.16      andrew    675:
1.29      andrew    676:     if ( ! $pass && ! $self->{appinfo}->{key}) {
1.28      andrew    677:         croak("password not set!\n");
1.16      andrew    678:     }
                    679:
                    680:     if ( ! $rec) {
1.19      andrew    681:         croak("Needed parameter 'record' not passed!\n");
1.16      andrew    682:     }
1.14      andrew    683:
1.30      andrew    684:     if ( $pass && ! $self->Password($pass)) {
1.16      andrew    685:         croak("Invalid Password!\n");
1.14      andrew    686:     }
                    687:
1.28      andrew    688:     if ( ! $rec->{encrypted} ) {
1.16      andrew    689:         croak("No encrypted content!");
                    690:     }
1.14      andrew    691:
1.48      andrew    692:     my $plaintext;
1.28      andrew    693:     if ($self->{version} == 4) {
                    694:         $self->{digest} ||= _calc_keys( $pass );
                    695:         my $acct = _decrypt_v4($rec->{encrypted}, $self->{digest});
1.48      andrew    696:         $plaintext = {
                    697:             0 => $rec->{plaintext}->{0},
1.46      andrew    698:             1 => {
                    699:                 label    => 'account',
                    700:                 label_id => 1,
                    701:                 font     => 0,
                    702:                 data     => $acct->{account},
                    703:             },
                    704:             2 => {
                    705:                 label    => 'password',
                    706:                 label_id => 2,
                    707:                 font     => 0,
                    708:                 data     => $acct->{password},
                    709:             },
                    710:             3 => {
                    711:                 label    => 'lastchange',
                    712:                 label_id => 3,
                    713:                 font     => 0,
                    714:                 data     => $acct->{lastchange},
                    715:             },
                    716:             255 => {
                    717:                 label    => 'notes',
                    718:                 label_id => 255,
                    719:                 font     => 0,
                    720:                 data     => $acct->{notes},
                    721:             },
                    722:         };
1.29      andrew    723:
1.28      andrew    724:     } elsif ($self->{version} == 5) {
1.48      andrew    725:         $plaintext = _decrypt_v5(
1.29      andrew    726:             $rec->{encrypted}, $self->{appinfo}->{key},
                    727:             $self->{appinfo}->{cipher}, $rec->{ivec},
1.28      andrew    728:         );
1.48      andrew    729:         $plaintext->{0} ||= $rec->{plaintext}->{0};
1.29      andrew    730:
1.28      andrew    731:     } else {
1.46      andrew    732:         croak "Unsupported Version $self->{version}";
1.28      andrew    733:     }
1.48      andrew    734:
                    735:     if ($plaintext) {
                    736:         $rec->{plaintext} = $plaintext;
                    737:         return $plaintext;
                    738:     }
1.28      andrew    739:     return;
                    740: }
1.14      andrew    741:
1.28      andrew    742: sub _decrypt_v4
                    743: {
                    744:     my $encrypted = shift;
                    745:     my $digest    = shift;
                    746:
1.48      andrew    747:     my $plaintext = _crypt3des( $encrypted, $digest, $DECRYPT );
1.29      andrew    748:     my ( $account, $password, $notes, $packed_date )
1.48      andrew    749:         = split /$NULL/xm, $plaintext, 4;
1.14      andrew    750:
1.28      andrew    751:     my $modified;
1.29      andrew    752:     if ($packed_date) {
                    753:         $modified = _parse_keyring_date($packed_date);
1.19      andrew    754:     }
                    755:
1.16      andrew    756:     return {
1.20      andrew    757:         account    => $account,
                    758:         password   => $password,
                    759:         notes      => $notes,
1.28      andrew    760:         lastchange => $modified,
1.16      andrew    761:     };
                    762: }
1.14      andrew    763:
1.28      andrew    764: sub _decrypt_v5
                    765: {
1.34      andrew    766:
1.28      andrew    767:     my $encrypted = shift;
                    768:     my $key       = shift;
                    769:     my $cipher    = shift;
1.29      andrew    770:     my $ivec      = shift;
                    771:
1.39      andrew    772:     my $c = crypts($cipher) or croak('Unknown cipher ' . $cipher);
1.28      andrew    773:
1.48      andrew    774:     my $plaintext;
1.28      andrew    775:
1.39      andrew    776:     if ($c->{name} eq 'None') {
1.28      andrew    777:         # do nothing
1.48      andrew    778:         $plaintext = $encrypted;
1.28      andrew    779:
1.39      andrew    780:     } elsif ($c->{name} eq 'DES_EDE3' or $c->{name} eq 'Rijndael') {
1.35      andrew    781:         require Crypt::CBC;
1.39      andrew    782:         my $cbc = Crypt::CBC->new(
1.35      andrew    783:             -key         => $key,
1.29      andrew    784:             -literal_key => 1,
                    785:             -iv          => $ivec,
1.39      andrew    786:             -cipher      => $c->{name},
                    787:             -keysize     => $c->{keylen},
                    788:             -blocksize   => $c->{blocksize},
1.29      andrew    789:             -header      => 'none',
                    790:             -padding     => 'oneandzeroes',
                    791:         );
                    792:
1.28      andrew    793:         if (! $c) {
                    794:             croak("Unable to set up encryption!");
                    795:         }
1.39      andrew    796:         my $len = $c->{blocksize} - length($encrypted) % $c->{blocksize};
1.34      andrew    797:         $encrypted .= $NULL x $len;
1.48      andrew    798:         $plaintext  = $cbc->decrypt($encrypted);
1.28      andrew    799:
                    800:     } else {
1.46      andrew    801:         croak "Unsupported Crypt $c->{name}";
1.28      andrew    802:     }
                    803:
1.46      andrew    804:     my %fields;
1.48      andrew    805:     while ($plaintext) {
1.28      andrew    806:         my $field;
1.48      andrew    807:         ($field, $plaintext) = _parse_field($plaintext);
1.28      andrew    808:         if (! $field) {
                    809:             last;
                    810:         }
1.46      andrew    811:         $fields{ $field->{label_id} } = $field;
1.28      andrew    812:     }
                    813:
1.46      andrew    814:     return \%fields;
1.28      andrew    815: }
                    816:
                    817: # Password
                    818:
                    819: sub Password
                    820: {
1.16      andrew    821:     my $self = shift;
1.24      andrew    822:     my $pass = shift;
1.16      andrew    823:     my $new_pass = shift;
1.14      andrew    824:
1.24      andrew    825:     if (! $pass) {
                    826:         delete $self->{password};
1.30      andrew    827:         delete $self->{appinfo}->{key};
1.28      andrew    828:         return 1;
1.24      andrew    829:     }
                    830:
1.29      andrew    831:     if (
1.46      andrew    832:         ($self->{version} == 4 && ! exists $self->{encpassword}) ||
1.29      andrew    833:         ($self->{version} == 5 && ! exists $self->{appinfo}->{masterhash})
                    834:     ) {
1.16      andrew    835:         return $self->_password_update($pass);
                    836:     }
                    837:
                    838:     if ($new_pass) {
                    839:         my @accts = ();
1.46      andrew    840:         foreach my $rec (@{ $self->{records} }) {
                    841:             my $acct = $self->Decrypt($rec, $pass);
1.16      andrew    842:             if ( ! $acct ) {
1.48      andrew    843:                 croak("Couldn't decrypt $rec->{plaintext}->{0}->{data}");
1.16      andrew    844:             }
                    845:             push @accts, $acct;
                    846:         }
1.14      andrew    847:
1.16      andrew    848:         if ( ! $self->_password_update($new_pass)) {
                    849:             croak("Couldn't set new password!");
                    850:         }
                    851:         $pass = $new_pass;
1.1       andrew    852:
1.16      andrew    853:         foreach my $i (0..$#accts) {
1.28      andrew    854:             delete $self->{records}->[$i]->{encrypted};
1.48      andrew    855:             $self->{records}->[$i]->{plaintext} = $accts[$i];
                    856:             $self->Encrypt($self->{records}->[$i], $pass);
1.16      andrew    857:         }
1.14      andrew    858:     }
1.1       andrew    859:
1.28      andrew    860:     if (defined $self->{password} && $pass eq $self->{password}) {
                    861:         # already verified this password
                    862:         return 1;
                    863:     }
                    864:
                    865:     if ($self->{version} == 4) {
1.46      andrew    866:         my $valid = _password_verify_v4($pass, $self->{encpassword});
1.28      andrew    867:
1.46      andrew    868:         # May as well generate the keys we need now,
                    869:         # since we know the password is right
1.28      andrew    870:         if ($valid) {
                    871:             $self->{digest} = _calc_keys($pass);
                    872:             if ($self->{digest} ) {
                    873:                 $self->{password} = $pass;
                    874:                 return 1;
                    875:             }
                    876:         }
                    877:     } elsif ($self->{version} == 5) {
1.35      andrew    878:         return _password_verify_v5($self->{appinfo}, $pass);
1.28      andrew    879:     } else {
1.46      andrew    880:         croak "Unsupported version $self->{version}";
1.28      andrew    881:     }
                    882:
                    883:     return;
                    884: }
                    885:
                    886: sub _password_verify_v4
                    887: {
1.32      andrew    888:     require Digest::MD5;
                    889:     import Digest::MD5 qw(md5);
                    890:
1.28      andrew    891:     my $pass = shift;
                    892:     my $data = shift;
                    893:
                    894:     if (! $pass) { croak('No password specified!'); };
                    895:
                    896:     # XXX die "No encrypted password in file!" unless defined $data;
                    897:     if ( ! defined $data) { return; };
                    898:
                    899:     $data =~ s/$NULL$//xm;
                    900:
                    901:     my $salt = substr $data, 0, $kSalt_Size;
                    902:
                    903:     my $msg = $salt . $pass;
                    904:     $msg .= "\0" x ( $MD5_CBLOCK - length $msg );
                    905:
                    906:     my $digest = md5($msg);
                    907:
1.33      andrew    908:     if ($data ne $salt . $digest ) {
1.28      andrew    909:         return;
                    910:     }
                    911:
                    912:     return 1;
                    913: }
                    914:
                    915: sub _password_verify_v5
                    916: {
1.35      andrew    917:     my $appinfo = shift;
1.28      andrew    918:     my $pass    = shift;
                    919:
                    920:     my $salt = pack("H*", $appinfo->{salt});
                    921:
1.39      andrew    922:     my $c = crypts($appinfo->{cipher})
                    923:         or croak('Unknown cipher ' . $appinfo->{cipher});
1.29      andrew    924:     my ($key, $hash) = _calc_key_v5(
                    925:         $pass, $salt, $appinfo->{iter},
1.39      andrew    926:         $c->{keylen},
                    927:         $c->{DES_odd_parity},
1.28      andrew    928:     );
                    929:
1.35      andrew    930:     #print "Iter: '" . $appinfo->{iter} . "'\n";
1.28      andrew    931:     #print "Key:  '". unpack("H*", $key) . "'\n";
1.35      andrew    932:     #print "Salt: '". unpack("H*", $salt) . "'\n";
1.29      andrew    933:     #print "Hash: '". $hash . "'\n";
1.28      andrew    934:     #print "Hash: '". $appinfo->{masterhash} . "'\n";
                    935:
1.29      andrew    936:     if ($appinfo->{masterhash} eq $hash) {
1.28      andrew    937:         $appinfo->{key} = $key;
                    938:     } else {
                    939:         return;
                    940:     }
1.29      andrew    941:
                    942:     return $key;
                    943: }
                    944:
                    945:
                    946: sub _password_update
                    947: {
                    948:     # It is very important to Encrypt after calling this
                    949:     #     (Although it is generally only called by Encrypt)
                    950:     # because otherwise the data will be out of sync with the
                    951:     # password, and that would suck!
                    952:     my $self   = shift;
                    953:     my $pass   = shift;
                    954:
                    955:     if ($self->{version} == 4) {
                    956:         my $data = _password_update_v4($pass, @_);
                    957:
                    958:         if (! $data) {
                    959:             carp("Failed  to update password!");
                    960:             return;
                    961:         }
                    962:
                    963:         # AFAIK the thing we use to test the password is
                    964:         #     always in the first entry
1.46      andrew    965:         $self->{encpassword} = $data;
1.29      andrew    966:         $self->{password} = $pass;
                    967:         $self->{digest}   = _calc_keys( $self->{password} );
                    968:
                    969:         return 1;
                    970:
                    971:     } elsif ($self->{version} == 5) {
                    972:         my $cipher  = shift || $self->{appinfo}->{cipher};
                    973:         my $iter    = shift || $self->{appinfo}->{iter};
                    974:         my $salt    = shift || 0;
                    975:
                    976:         my $hash = _password_update_v5(
                    977:             $self->{appinfo}, $pass, $cipher, $iter, $salt
                    978:         );
                    979:
                    980:         if (! $hash) {
                    981:             carp("Failed  to update password!");
                    982:             return;
                    983:         }
                    984:
                    985:         return 1;
                    986:     } else {
                    987:         croak("Unsupported version ($self->{version})");
                    988:     }
                    989:
                    990:     return;
                    991: }
                    992:
                    993: sub _password_update_v4
                    994: {
1.32      andrew    995:     require Digest::MD5;
                    996:     import Digest::MD5 qw(md5);
                    997:
1.29      andrew    998:     my $pass = shift;
                    999:
                   1000:     if (! defined $pass) { croak('No password specified!'); };
                   1001:
                   1002:     my $salt;
                   1003:     for ( 1 .. $kSalt_Size ) {
                   1004:         $salt .= chr int rand 255;
                   1005:     }
                   1006:
                   1007:     my $msg = $salt . $pass;
                   1008:
                   1009:     $msg .= "\0" x ( $MD5_CBLOCK - length $msg );
                   1010:
                   1011:     my $digest = md5($msg);
                   1012:
                   1013:     my $data = $salt . $digest;    # . "\0";
                   1014:
                   1015:     return $data;
                   1016: }
                   1017:
                   1018: sub _password_update_v5
                   1019: {
                   1020:     my $appinfo = shift;
                   1021:     my $pass    = shift;
                   1022:     my $cipher  = shift;
                   1023:     my $iter    = shift;
                   1024:
                   1025:     # I thought this needed to be 'blocksize', but apparently not.
                   1026:     #my $length  = $CRYPTS[ $cipher ]{blocksize};
                   1027:     my $length  = 8;
                   1028:     my $salt    = shift || pack("C*",map {rand(256)} 1..$length);
                   1029:
1.39      andrew   1030:     my $c = crypts($cipher) or croak('Unknown cipher ' . $cipher);
1.29      andrew   1031:     my ($key, $hash) = _calc_key_v5(
                   1032:         $pass, $salt, $iter,
1.39      andrew   1033:         $c->{keylen},
                   1034:         $c->{DES_odd_parity},
1.29      andrew   1035:     );
                   1036:
                   1037:     $appinfo->{salt}           = unpack "H*", $salt;
                   1038:     $appinfo->{iter}           = $iter;
                   1039:     $appinfo->{cipher}         = $cipher;
1.39      andrew   1040:     $appinfo->{masterhash}     = $hash;
1.29      andrew   1041:     $appinfo->{key}            = $key;
                   1042:
1.28      andrew   1043:     return $key;
1.1       andrew   1044: }
                   1045:
1.48      andrew   1046: sub Unlock
                   1047: {
                   1048:     my $self = shift;
                   1049:     my ($pass) = @_;
                   1050:     $pass ||= $self->{password};
                   1051:
                   1052:     if ( $pass && ! $self->Password($pass)) {
                   1053:         croak("Invalid Password!\n");
                   1054:     }
                   1055:
                   1056:     foreach my $rec (@{ $self->{records} }) {
                   1057:         $self->Decrypt($rec);
                   1058:     }
                   1059:
                   1060:     return 1;
                   1061:
                   1062: }
                   1063:
                   1064: sub Lock
                   1065: {
                   1066:     my $self = shift;
                   1067:
                   1068:     $self->Password();
                   1069:
                   1070:     foreach my $rec (@{ $self->{records} }) {
                   1071:         my $name = $rec->{plaintext}->{0};
                   1072:         delete $rec->{plaintext};
                   1073:         $rec->{plaintext}->{0} = $name;
                   1074:     }
                   1075:
                   1076:     return 1;
                   1077: }
                   1078:
1.34      andrew   1079: # Helpers
1.28      andrew   1080:
                   1081: sub _calc_keys
                   1082: {
1.14      andrew   1083:     my $pass = shift;
                   1084:     if (! defined $pass) { croak('No password defined!'); };
                   1085:
                   1086:     my $digest = md5($pass);
                   1087:
                   1088:     my ( $key1, $key2 ) = unpack 'a8a8', $digest;
                   1089:
                   1090:     #--------------------------------------------------
                   1091:     # print "key1: $key1: ", length $key1, "\n";
                   1092:     # print "key2: $key2: ", length $key2, "\n";
                   1093:     #--------------------------------------------------
                   1094:
                   1095:     $digest = unpack 'H*', $key1 . $key2 . $key1;
                   1096:
                   1097:     #--------------------------------------------------
                   1098:     # print "Digest: ", $digest, "\n";
                   1099:     # print length $digest, "\n";
                   1100:     #--------------------------------------------------
                   1101:
                   1102:     return $digest;
1.3       andrew   1103: }
                   1104:
1.29      andrew   1105: sub _calc_key_v5
                   1106: {
                   1107:     my ($pass, $salt, $iter, $keylen, $dop) = @_;
                   1108:
1.32      andrew   1109:     require Digest::HMAC_SHA1;
                   1110:     import  Digest::HMAC_SHA1 qw(hmac_sha1);
                   1111:     require Digest::SHA1;
                   1112:     import  Digest::SHA1 qw(sha1);
                   1113:
1.29      andrew   1114:     my $key = _pbkdf2( $pass, $salt, $iter, $keylen, \&hmac_sha1 );
1.43      andrew   1115:     if ($dop) { $key = _DES_odd_parity($key); }
1.29      andrew   1116:
                   1117:     my $hash = unpack("H*", substr(sha1($key.$salt),0, 8));
                   1118:
                   1119:     return $key, $hash;
                   1120: }
                   1121:
1.28      andrew   1122: sub _crypt3des
                   1123: {
1.32      andrew   1124:     require Crypt::DES;
                   1125:
1.28      andrew   1126:     my ( $plaintext, $passphrase, $flag ) = @_;
                   1127:
                   1128:     $passphrase   .= $SPACE x ( 16 * 3 );
                   1129:     my $cyphertext = $EMPTY;
                   1130:
                   1131:     my $size = length $plaintext;
1.14      andrew   1132:
1.28      andrew   1133:     #print "STRING: '$plaintext' - Length: " . (length $plaintext) . "\n";
1.11      andrew   1134:
1.28      andrew   1135:     my @C;
                   1136:     for ( 0 .. 2 ) {
                   1137:         $C[$_] =
                   1138:           new Crypt::DES( pack 'H*', ( substr $passphrase, 16 * $_, 16 ));
1.16      andrew   1139:     }
                   1140:
1.28      andrew   1141:     for ( 0 .. ( ($size) / 8 ) ) {
                   1142:         my $pt = substr $plaintext, $_ * 8, 8;
                   1143:
                   1144:         #print "PT: '$pt' - Length: " . length($pt) . "\n";
                   1145:         if (! length $pt) { next; };
                   1146:         if ( (length $pt) < 8 ) {
                   1147:             if ($flag == $DECRYPT) { croak('record not 8 byte padded'); };
                   1148:             my $len = 8 - (length $pt);
                   1149:             $pt .= ($NULL x $len);
                   1150:         }
                   1151:         if ( $flag == $ENCRYPT ) {
                   1152:             $pt = $C[0]->encrypt($pt);
                   1153:             $pt = $C[1]->decrypt($pt);
                   1154:             $pt = $C[2]->encrypt($pt);
                   1155:         }
                   1156:         else {
                   1157:             $pt = $C[0]->decrypt($pt);
                   1158:             $pt = $C[1]->encrypt($pt);
                   1159:             $pt = $C[2]->decrypt($pt);
                   1160:         }
                   1161:
                   1162:         #print "PT: '$pt' - Length: " . length($pt) . "\n";
                   1163:         $cyphertext .= $pt;
                   1164:     }
1.11      andrew   1165:
1.28      andrew   1166:     $cyphertext =~ s/$NULL+$//xm;
1.11      andrew   1167:
1.28      andrew   1168:     #print "CT: '$cyphertext' - Length: " . length($cyphertext) . "\n";
1.11      andrew   1169:
1.28      andrew   1170:     return $cyphertext;
                   1171: }
1.11      andrew   1172:
1.28      andrew   1173: sub _parse_field
                   1174: {
                   1175:     my $field = shift;
                   1176:
1.46      andrew   1177:     my ($len) = unpack "n", $field;
1.28      andrew   1178:     if ($len + 4 > length $field) {
                   1179:         return undef, $field;
                   1180:     }
1.34      andrew   1181:     my $unpackstr = "x2 C1 C1 A$len";
                   1182:     my $offset    =   2 +1 +1 +$len;
1.46      andrew   1183:     if ($len % 2) {
1.28      andrew   1184:         # trim the 0/1 byte padding for next even address.
1.34      andrew   1185:         $offset++;
1.28      andrew   1186:         $unpackstr .= ' x'
                   1187:     }
1.11      andrew   1188:
1.34      andrew   1189:     my ($label, $font, $data) = unpack $unpackstr, $field;
                   1190:     my $leftover = substr $field, $offset;
1.11      andrew   1191:
1.46      andrew   1192:     my $label_id = $label;
                   1193:     my $l = labels($label);
                   1194:     if ($l) {
                   1195:         $label = $l->{name} || $l->{id};
                   1196:         $label_id = $l->{id};
                   1197:     }
                   1198:
                   1199:     if ($label_id && $label_id == 3) {
                   1200:         ($data) = substr $field, 4, $len;
1.28      andrew   1201:         $data = _parse_keyring_date($data);
1.14      andrew   1202:     }
1.28      andrew   1203:     return {
                   1204:         #len      => $len,
1.46      andrew   1205:         label    => $label,
                   1206:         label_id => $label_id,
1.28      andrew   1207:         font     => $font,
                   1208:         data     => $data,
                   1209:     }, $leftover;
1.6       andrew   1210: }
                   1211:
1.29      andrew   1212: sub _pack_field
                   1213: {
                   1214:     my $field = shift;
1.28      andrew   1215:
1.37      andrew   1216:     my $packed;
                   1217:     if (defined $field) {
                   1218:         my $label = $field->{label_id} || 0;
                   1219:         if (defined $field->{label} && ! $label) {
1.46      andrew   1220:             $label = $field->{label};
                   1221:         }
                   1222:
                   1223:         my $l = labels($field->{label});
                   1224:         if ($l) {
                   1225:             $label = $l->{id};
1.37      andrew   1226:         }
1.46      andrew   1227:
1.37      andrew   1228:         my $font  = $field->{font} || 0;
                   1229:         my $data  = defined $field->{data} ? $field->{data} : $EMPTY;
                   1230:
                   1231:         if ($label && $label == 3) {
                   1232:             $data = _pack_keyring_date($data);
                   1233:         }
                   1234:         my $len = length $data;
                   1235:         my $packstr = "n1 C1 C1 A*";
                   1236:
                   1237:         $packed = pack $packstr, ($len, $label, $font, $data);
                   1238:
                   1239:         if ($len % 2) {
                   1240:             # add byte padding for next even address.
                   1241:             $packed .= $NULL;
                   1242:         }
                   1243:     } else {
1.38      andrew   1244:         my $packstr = "n1 C1 C1 x1";
1.37      andrew   1245:         $packed = pack $packstr, 0, 0, 0;
1.14      andrew   1246:     }
                   1247:
1.29      andrew   1248:     return $packed;
                   1249: }
1.11      andrew   1250:
1.29      andrew   1251: sub _parse_keyring_date
                   1252: {
                   1253:     my $data = shift;
1.11      andrew   1254:
1.29      andrew   1255:     my $u = unpack 'n', $data;
                   1256:     my $year  = (($u & 0xFE00) >> 9) + 4; # since 1900
                   1257:     my $month = (($u & 0x01E0) >> 5) - 1; # 0-11
                   1258:     my $day   = (($u & 0x001F) >> 0);     # 1-31
1.11      andrew   1259:
1.29      andrew   1260:     return {
                   1261:         year   => $year,
                   1262:         month  => $month || 0,
                   1263:         day    => $day   || 1,
                   1264:     };
                   1265: }
1.11      andrew   1266:
1.29      andrew   1267: sub _pack_keyring_date
                   1268: {
                   1269:     my $d = shift;
                   1270:     my $year  = $d->{year};
                   1271:     my $month = $d->{month};
                   1272:     my $day   = $d->{day};
1.11      andrew   1273:
1.29      andrew   1274:     $year -= 4;
                   1275:     $month++;
1.11      andrew   1276:
1.46      andrew   1277:     return pack 'n*', $day | ($month << 5) | ($year << 9);
1.1       andrew   1278: }
1.29      andrew   1279:
1.1       andrew   1280:
1.28      andrew   1281: sub _hexdump
                   1282: {
                   1283:     my $prefix = shift;   # What to print in front of each line
                   1284:     my $data = shift;     # The data to dump
                   1285:     my $maxlines = shift; # Max # of lines to dump
                   1286:     my $offset;           # Offset of current chunk
                   1287:
                   1288:     for ($offset = 0; $offset < length($data); $offset += 16)
                   1289:     {
                   1290:         my $hex;   # Hex values of the data
                   1291:         my $ascii; # ASCII values of the data
                   1292:         my $chunk; # Current chunk of data
                   1293:
                   1294:         last if defined($maxlines) && ($offset >= ($maxlines * 16));
1.14      andrew   1295:
1.28      andrew   1296:         $chunk = substr($data, $offset, 16);
1.14      andrew   1297:
1.28      andrew   1298:         ($hex = $chunk) =~ s/./sprintf "%02x ", ord($&)/ges;
1.11      andrew   1299:
1.28      andrew   1300:         ($ascii = $chunk) =~ y/\040-\176/./c;
1.14      andrew   1301:
1.28      andrew   1302:         printf "%s %-48s|%-16s|\n", $prefix, $hex, $ascii;
1.14      andrew   1303:     }
1.28      andrew   1304: }
                   1305:
                   1306: sub _bindump
                   1307: {
                   1308:     my $prefix = shift;   # What to print in front of each line
                   1309:     my $data = shift;     # The data to dump
                   1310:     my $maxlines = shift; # Max # of lines to dump
                   1311:     my $offset;           # Offset of current chunk
                   1312:
                   1313:     for ($offset = 0; $offset < length($data); $offset += 8)
                   1314:     {
                   1315:         my $bin;   # binary values of the data
                   1316:         my $ascii; # ASCII values of the data
                   1317:         my $chunk; # Current chunk of data
1.14      andrew   1318:
1.28      andrew   1319:         last if defined($maxlines) && ($offset >= ($maxlines * 8));
1.14      andrew   1320:
1.28      andrew   1321:         $chunk = substr($data, $offset, 8);
1.14      andrew   1322:
1.28      andrew   1323:         ($bin = $chunk) =~ s/./sprintf "%08b ", ord($&)/ges;
1.14      andrew   1324:
1.28      andrew   1325:         ($ascii = $chunk) =~ y/\040-\176/./c;
1.14      andrew   1326:
1.28      andrew   1327:         printf "%s %-72s|%-8s|\n", $prefix, $bin, $ascii;
1.14      andrew   1328:     }
1.28      andrew   1329: }
1.14      andrew   1330:
1.28      andrew   1331: # Thanks to Jochen Hoenicke <hoenicke@gmail.com>
                   1332: # (one of the authors of Palm Keyring)
                   1333: # for these next two subs.
                   1334:
                   1335: # Usage pbkdf2(password, salt, iter, keylen, prf)
                   1336: # iter is number of iterations
                   1337: # keylen is length of generated key in bytes
                   1338: # prf is the pseudo random function (e.g. hmac_sha1)
                   1339: # returns the key.
                   1340: sub _pbkdf2($$$$$)
                   1341: {
                   1342:     my ($password, $salt, $iter, $keylen, $prf) = @_;
                   1343:     my ($k, $t, $u, $ui, $i);
                   1344:     $t = "";
                   1345:     for ($k = 1; length($t) <  $keylen; $k++) {
                   1346:     $u = $ui = &$prf($salt.pack('N', $k), $password);
                   1347:     for ($i = 1; $i < $iter; $i++) {
                   1348:         $ui = &$prf($ui, $password);
                   1349:         $u ^= $ui;
                   1350:     }
                   1351:     $t .= $u;
                   1352:     }
                   1353:     return substr($t, 0, $keylen);
                   1354: }
1.11      andrew   1355:
1.43      andrew   1356: sub _DES_odd_parity($) {
1.28      andrew   1357:     my $key = $_[0];
                   1358:     my ($r, $i);
                   1359:     my @odd_parity = (
                   1360:   1,  1,  2,  2,  4,  4,  7,  7,  8,  8, 11, 11, 13, 13, 14, 14,
                   1361:  16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28, 31, 31,
                   1362:  32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44, 44, 47, 47,
                   1363:  49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59, 61, 61, 62, 62,
                   1364:  64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74, 74, 76, 76, 79, 79,
                   1365:  81, 81, 82, 82, 84, 84, 87, 87, 88, 88, 91, 91, 93, 93, 94, 94,
                   1366:  97, 97, 98, 98,100,100,103,103,104,104,107,107,109,109,110,110,
                   1367: 112,112,115,115,117,117,118,118,121,121,122,122,124,124,127,127,
                   1368: 128,128,131,131,133,133,134,134,137,137,138,138,140,140,143,143,
                   1369: 145,145,146,146,148,148,151,151,152,152,155,155,157,157,158,158,
                   1370: 161,161,162,162,164,164,167,167,168,168,171,171,173,173,174,174,
                   1371: 176,176,179,179,181,181,182,182,185,185,186,186,188,188,191,191,
                   1372: 193,193,194,194,196,196,199,199,200,200,203,203,205,205,206,206,
                   1373: 208,208,211,211,213,213,214,214,217,217,218,218,220,220,223,223,
                   1374: 224,224,227,227,229,229,230,230,233,233,234,234,236,236,239,239,
                   1375: 241,241,242,242,244,244,247,247,248,248,251,251,253,253,254,254);
                   1376:     for ($i = 0; $i< length($key); $i++) {
                   1377:     $r .= chr($odd_parity[ord(substr($key, $i, 1))]);
                   1378:     }
                   1379:     return $r;
1.14      andrew   1380: }
1.11      andrew   1381:
1.14      andrew   1382: 1;
                   1383: __END__
                   1384: =head1 NAME
1.11      andrew   1385:
1.14      andrew   1386: Palm::Keyring - Handler for Palm Keyring databases.
1.1       andrew   1387:
1.14      andrew   1388: =head1 DESCRIPTION
1.7       andrew   1389:
1.14      andrew   1390: The Keyring PDB handler is a helper class for the Palm::PDB package. It
                   1391: parses Keyring for Palm OS databases.  See
                   1392: L<http://gnukeyring.sourceforge.net/>.
1.1       andrew   1393:
1.49    ! andrew   1394: It has the standard Palm::PDB methods with 4 additional public methods.
        !          1395: Unlock, Lock, Decrypt and Encrypt.
1.1       andrew   1396:
1.37      andrew   1397: It currently supports the v4 Keyring databases as well as
1.49    ! andrew   1398: the pre-release v5 databases.
1.1       andrew   1399:
1.14      andrew   1400: =head1 SYNOPSIS
1.1       andrew   1401:
1.16      andrew   1402:     use Palm::PDB;
                   1403:     use Palm::Keyring;
1.17      andrew   1404:
                   1405:     my $pass = 'password';
1.18      andrew   1406:     my $file = 'Keys-Gtkr.pdb';
                   1407:     my $pdb  = new Palm::PDB;
1.16      andrew   1408:     $pdb->Load($file);
1.17      andrew   1409:
1.49    ! andrew   1410:     $pdb->Unlock($pass);
1.46      andrew   1411:     foreach my $rec (@{ $pdb->{records} }) {
1.49    ! andrew   1412:         print $rec->{plaintext}->{0}->{data}, ' - ',
        !          1413:               $rec->{plaintext}->{1}->{data}, "\n";
1.16      andrew   1414:     }
1.49    ! andrew   1415:     $pdb->Lock();
1.1       andrew   1416:
1.14      andrew   1417: =head1 SUBROUTINES/METHODS
1.1       andrew   1418:
1.14      andrew   1419: =head2 new
1.11      andrew   1420:
1.31      andrew   1421:     $pdb = new Palm::Keyring([$password[, $version]]);
1.11      andrew   1422:
1.14      andrew   1423: Create a new PDB, initialized with the various Palm::Keyring fields
                   1424: and an empty record list.
1.11      andrew   1425:
1.14      andrew   1426: Use this method if you're creating a Keyring PDB from scratch otherwise you
1.16      andrew   1427: can just use Palm::PDB::new() before calling Load().
1.11      andrew   1428:
1.49    ! andrew   1429: If you pass in a password, it will initalize the database with the encrypted
1.24      andrew   1430: password.
                   1431:
1.31      andrew   1432: new() now also takes options in other formats
                   1433:
                   1434:     $pdb = new Palm::Keyring({ key1 => value1,  key2 => value2 });
                   1435:     $pdb = new Palm::Keyring( -key1 => value1, -key2 => value2);
                   1436:
1.38      andrew   1437: =over
                   1438:
                   1439: =item Supported options
1.31      andrew   1440:
                   1441: =over
                   1442:
                   1443: =item password
                   1444:
                   1445: The password used to initialize the database
                   1446:
                   1447: =item version
                   1448:
                   1449: The version of database to create.  Accepts either 4 or 5.  Currently defaults to 4.
                   1450:
                   1451: =item cipher
                   1452:
1.49    ! andrew   1453: The cipher to use.  Either the number or the name.  Only used by v5 datbases.
1.31      andrew   1454:
                   1455:     0 => None
                   1456:     1 => DES_EDE3
                   1457:     2 => AES128
                   1458:     3 => AES256
                   1459:
                   1460: =item iterations
                   1461:
1.49    ! andrew   1462: The number of iterations to encrypt with.  Only used by somy crypts in v5 databases.
1.37      andrew   1463:
1.31      andrew   1464: =back
                   1465:
1.38      andrew   1466: =back
                   1467:
1.36      andrew   1468: For v5 databases there are some additional appinfo fields set.
1.40      andrew   1469: These are set either on new() or Load().
1.36      andrew   1470:
1.37      andrew   1471:     $pdb->{appinfo} = {
                   1472:         # normal appinfo stuff described in L<Palm::StdAppInfo>
                   1473:         cipher     => The index number of the cipher being used
                   1474:         iter       => Number of iterations for the cipher
                   1475:     };
1.36      andrew   1476:
1.43      andrew   1477: =head2 crypts
1.34      andrew   1478:
                   1479: Pass in the alias of the crypt to use, or the index.
                   1480:
1.38      andrew   1481: These only make sense for v5 databases.
                   1482:
1.34      andrew   1483: This is a function, not a method.
1.40      andrew   1484:
1.38      andrew   1485: $cipher can be 0, 1, 2, 3, None, DES_EDE3, AES128 or AES256.
1.34      andrew   1486:
                   1487:     my $c = Palm::Keyring::crypt($cipher);
                   1488:
                   1489: $c is now:
                   1490:
                   1491:     $c = {
                   1492:         alias     => (None|DES_EDE3|AES128|AES256),
                   1493:         name      => (None|DES_EDE3|Rijndael),
1.44      andrew   1494:         keylen    => <key length of the cipher>,
1.34      andrew   1495:         blocksize => <block size of the cipher>,
                   1496:         default_iter => <default iterations for the cipher>,
                   1497:     };
                   1498:
1.46      andrew   1499: If it is unable to find the crypt it will return undef.
                   1500:
                   1501: =head2 labels
                   1502:
1.49    ! andrew   1503: Pass in the id or the name of the label.  The label id is used as a key
        !          1504: to the different parts of the records.
        !          1505: See Encrypt() for details on where the label is used.
1.46      andrew   1506:
                   1507: This is a function, not a method.
                   1508:
                   1509:     my $l = Palm::Keyring::labels($label);
                   1510:
                   1511: $l is now:
                   1512:
                   1513:     $l = {
                   1514:         id => 0,
                   1515:         name => 'name',
                   1516:     };
                   1517:
                   1518: If what you passed in was a number that doesn't have a name, it will return:
                   1519:
                   1520:     $l => {
                   1521:         id => $num_passed_in,
                   1522:         name => undef,
                   1523:     }
                   1524:
                   1525: If you pass in a name that it can't find, then it returns undef.
                   1526:
1.16      andrew   1527: =head2 Encrypt
1.11      andrew   1528:
1.49    ! andrew   1529: =head3 B<!!! IMPORTANT !!!>  The order of the arguments to Encrypt has
        !          1530: changed.  $password and $plaintext used to be swapped.  They changed
        !          1531: because you can now set $rec->{plaintext} and not pass in $plaintext so
        !          1532: $password is more important.
        !          1533:
1.48      andrew   1534:     $pdb->Encrypt($rec[, $password[, $plaintext[, $ivec]]]);
1.11      andrew   1535:
1.16      andrew   1536: Encrypts an account into a record, either with the password previously
                   1537: used, or with a password that is passed.
1.34      andrew   1538:
                   1539: $ivec is the initialization vector to use to encrypt the record.  This is
                   1540: not used by v4 databases.  Normally this is not passed and is generated
                   1541: randomly.
1.1       andrew   1542:
1.28      andrew   1543: $rec is a record from $pdb->{records} or a new_Record().
1.48      andrew   1544: $rec->{plaintext} is a hashref in the format below.
1.1       andrew   1545:
1.48      andrew   1546:     $plaintext = {
1.46      andrew   1547:         0 => {
                   1548:             label    => 'name',
                   1549:             label_id => 0,
                   1550:             font     => 0,
                   1551:             data     => $name,
                   1552:         1 => {
                   1553:             label    => 'account',
                   1554:             label_id => 1,
                   1555:             font     => 0,
                   1556:             data     => $account,
                   1557:         },
                   1558:         2 => {
                   1559:             label    => 'password',
                   1560:             label_id => 2,
                   1561:             font     => 0,
                   1562:             data     => $password,
1.20      andrew   1563:         },
1.46      andrew   1564:         3 => {
                   1565:             label    => 'lastchange',
                   1566:             label_id => 3,
                   1567:             font     => 0,
1.49    ! andrew   1568:             data     => {
        !          1569:                 year => $year, # usually the year - 1900
        !          1570:                 mon  => $mon,  # range 0-11
        !          1571:                 day  => $day,  # range 1-31
        !          1572:             },
1.31      andrew   1573:         },
1.46      andrew   1574:         255 => {
                   1575:             label    => 'notes',
                   1576:             label_id => 255,
                   1577:             font     => 0,
                   1578:             data     => $notes,
1.31      andrew   1579:         },
1.46      andrew   1580:     };
1.31      andrew   1581:
1.49    ! andrew   1582: The account name is stored in $rec->{plaintext}->{0}->{data} for both v4
        !          1583: and v5 databases even when the record has not been Decrypt()ed.
1.31      andrew   1584:
1.48      andrew   1585:     $rec->{plaintext}->{0} => {
1.47      andrew   1586:         label    => 'name',
                   1587:         label_id => 0,
                   1588:         font     => 0,
                   1589:         data     => 'account name',
1.46      andrew   1590:     };
1.31      andrew   1591:
1.22      andrew   1592: If you have changed anything other than the lastchange, or don't pass in a
1.24      andrew   1593: lastchange key, Encrypt() will generate a new lastchange date for you.
1.22      andrew   1594:
                   1595: If you pass in a lastchange field that is different than the one in the
                   1596: record, it will honor what you passed in.
                   1597:
1.48      andrew   1598: You can either set $rec->{plaintext} or pass in $plaintext.  $plaintext
                   1599: is used over anything in $rec->{plaintext}.
                   1600:
1.22      andrew   1601:
1.16      andrew   1602: =head2 Decrypt
1.1       andrew   1603:
1.48      andrew   1604:     my $plaintext = $pdb->Decrypt($rec[, $password]);
1.1       andrew   1605:
1.48      andrew   1606: Decrypts the record and returns a reference for the plaintext account as
1.49    ! andrew   1607: described under Encrypt().
1.48      andrew   1608: Also sets $rec->{plaintext} with the same information as $plaintext as
1.49    ! andrew   1609: described in Encrypt().
1.1       andrew   1610:
1.46      andrew   1611:     foreach my $rec (@{ $pdb->{records} }) {
1.48      andrew   1612:         my $plaintext = $pdb->Decrypt($rec);
                   1613:         # do something with $plaintext
1.16      andrew   1614:     }
1.1       andrew   1615:
1.31      andrew   1616:
1.16      andrew   1617: =head2 Password
1.1       andrew   1618:
1.16      andrew   1619:     $pdb->Password([$password[, $new_password]]);
1.1       andrew   1620:
1.16      andrew   1621: Either sets the password to be used to crypt, or if you pass $new_password,
                   1622: changes the password on the database.
1.1       andrew   1623:
1.16      andrew   1624: If you have created a new $pdb, and you didn't set a password when you
                   1625: called new(), you only need to pass one password and it will set that as
                   1626: the password.
1.1       andrew   1627:
1.24      andrew   1628: If nothing is passed, it forgets the password that it was remembering.
1.36      andrew   1629:
                   1630: After a successful password verification the following fields are set
                   1631:
                   1632: For v4
                   1633:
1.37      andrew   1634:     $pdb->{digest}   = the calculated digest used from the key;
                   1635:     $pdb->{password} = the password that was passed in;
1.46      andrew   1636:     $pdb->{encpassword} = the password as stored in the pdb;
1.36      andrew   1637:
                   1638: For v5
                   1639:
1.37      andrew   1640:     $pdb->{appinfo} = {
                   1641:         # As described under new() with these additional fields
                   1642:         cipher     => The index number of the cipher being used
                   1643:         iter       => Number of iterations for the cipher
                   1644:         key        => The key that is calculated from the password
                   1645:                       and salt and is used to decrypt the records.
                   1646:         masterhash => the hash of the key that is stored in the
                   1647:                       database.  Either set when Loading the database
                   1648:                       or when setting a new password.
                   1649:         salt       => the salt that is either read out of the database
                   1650:                       or calculated when setting a new password.
                   1651:     };
1.1       andrew   1652:
1.48      andrew   1653: =head2 Unlock
                   1654:
                   1655:     $pdb->Unlock([$password]);
                   1656:
                   1657: Decrypts all the records.  Sets $rec->{plaintext} for all records.
                   1658:
                   1659: This makes it easy to show all decrypted information.
                   1660:
                   1661:    my $pdb = Palm::KeyRing->new();
                   1662:    $pdb->Load($keyring_file);
                   1663:    $pdb->Unlock($password);
                   1664:    foreach my $plaintext (map { $_->{plaintext} } @{ $pdb->{records} }) {
                   1665:        # Do something like display the account.
                   1666:    }
                   1667:    $pdb->Lock();
                   1668:
                   1669: =head2 Lock
                   1670:
                   1671:     $pdb->Lock();
                   1672:
                   1673: Unsets $rec->{plaintext} for all records and unsets the saved password.
                   1674:
1.49    ! andrew   1675: This does NOT Encrypt() any of the records before clearing them, so if
1.48      andrew   1676: you are not careful you will lose information.
                   1677:
                   1678: B<CAVEAT!> This only does "delete $rec->{plaintext}" and the same for the
                   1679: password.  If someone knows of a cross platform reliable way to make
                   1680: sure that the information is actually cleared from memory I would
                   1681: appreciate it.  Also, if someone knows how to make sure that the stuff
                   1682: in $rec->{plaintext} is not written to swap, that would be very handy as
                   1683: well.
                   1684:
1.43      andrew   1685: =head2 Other overridden subroutines/methods
                   1686:
                   1687: =over
                   1688:
                   1689: =item ParseAppInfoBlock
                   1690:
                   1691: Converts the extra returned by Palm::StdAppInfo::ParseAppInfoBlock() into
                   1692: the following additions to $pdb->{appinfo}
                   1693:
                   1694:     $pdb->{appinfo} = {
                   1695:         cipher     => The index number of the cipher being used (Not v4)
                   1696:         iter       => Number of iterations for the cipher (Not v4)
                   1697:     };
                   1698:
                   1699: =item PackAppInfoBlock
                   1700:
                   1701: Reverses ParseAppInfoBlock before
                   1702: sending it on to Palm::StdAppInfo::PackAppInfoBlock()
                   1703:
                   1704: =item ParseRecord
                   1705:
                   1706: Adds some fields to a record from Palm::StdAppInfo::ParseRecord()
                   1707:
                   1708:     $rec = {
                   1709:         name       => Account name
                   1710:         ivec       => The IV for the encrypted record.  (Not v4)
                   1711:         encrypted  => the encrypted information
                   1712:     };
1.46      andrew   1713:
                   1714: For v4 databases it also removes record 0 and moves the encrypted password
                   1715: to $self->{encpassword}.
1.43      andrew   1716:
                   1717: =item PackRecord
                   1718:
                   1719: Reverses ParseRecord and then sends it through Palm::StdAppInfo::PackRecord()
                   1720:
1.47      andrew   1721: =item Write
                   1722:
                   1723: For v4 databases it puts back the record 0 for the encrypted password before
                   1724: writing it.
                   1725:
1.43      andrew   1726: =back
                   1727:
1.14      andrew   1728: =head1 DEPENDENCIES
1.1       andrew   1729:
1.14      andrew   1730: Palm::StdAppInfo
1.1       andrew   1731:
1.41      andrew   1732: B<For v4 databases>
                   1733:
1.14      andrew   1734: Digest::MD5
1.9       andrew   1735:
1.14      andrew   1736: Crypt::DES
1.4       andrew   1737:
1.41      andrew   1738: B<For v5 databases>
                   1739:
                   1740: Digest::HMAC_SHA1
                   1741:
                   1742: Digest::SHA1
                   1743:
                   1744: Depending on how the database is encrypted
                   1745:
                   1746: Crypt::CBC - For any encryption but None
                   1747:
1.43      andrew   1748: Crypt::DES_EDE3 - DES_EDE3 encryption
1.41      andrew   1749:
1.43      andrew   1750: Crytp::Rijndael - AES encryption schemes
1.10      andrew   1751:
1.24      andrew   1752: =head1 THANKS
                   1753:
1.47      andrew   1754: I would like to thank the helpful Perlmonk shigetsu who gave me some great
                   1755: advice and helped me get my first module posted.
                   1756: L<http://perlmonks.org/?node_id=596998>
1.24      andrew   1757:
                   1758: I would also like to thank
                   1759: Johan Vromans
                   1760: E<lt>jvromans@squirrel.nlE<gt> --
                   1761: L<http://www.squirrel.nl/people/jvromans>.
                   1762: He had his own Palm::KeyRing module that he posted a couple of days before
                   1763: mine was ready and he was kind enough to let me have the namespace as well
                   1764: as giving me some very helpful hints about doing a few things that I was
                   1765: unsure of.  He is really great.
1.42      andrew   1766:
                   1767: And finally,
                   1768: thanks to Jochen Hoenicke E<lt>hoenicke@gmail.comE<gt>
                   1769: (one of the authors of Palm Keyring)
                   1770: for getting me started on the v5 support as well as providing help
                   1771: and some subroutines.
1.24      andrew   1772:
1.14      andrew   1773: =head1 BUGS AND LIMITATIONS
1.43      andrew   1774:
                   1775: I am sure there are problems with this module.  For example, I have
                   1776: not done very extensive testing of the v5 databases.
1.45      andrew   1777:
                   1778: I am not sure I am 'require module' the best way, but I don't want to
                   1779: depend on modules that you don't need to use.
1.43      andrew   1780:
                   1781: The date validation for packing new dates is very poor.
                   1782:
                   1783: I have not gone through and standardized on how the module fails.  Some
                   1784: things fail with croak, some return undef, some may even fail silently.
1.49    ! andrew   1785: Nothing initializes a lasterr method or anything like that.
        !          1786:
        !          1787: This module does not do anything special with the plaintext data.  It SHOULD
        !          1788: treat it somehow special so that it can't be found in RAM or in a swap file
        !          1789: anywhere.  I don't have a clue how to do this.
        !          1790:
        !          1791: I need to fix all this before it is a 1.0 candidate.
1.1       andrew   1792:
1.14      andrew   1793: Please report any bugs or feature requests to
                   1794: C<bug-palm-keyring at rt.cpan.org>, or through the web interface at
                   1795: L<http://rt.cpan.org>.  I will be notified, and then you'll automatically be
                   1796: notified of progress on your bug as I make changes.
1.1       andrew   1797:
                   1798: =head1 AUTHOR
                   1799:
1.27      andrew   1800: Andrew Fresh E<lt>andrew@cpan.orgE<gt>
1.1       andrew   1801:
1.14      andrew   1802: =head1 LICENSE AND COPYRIGHT
                   1803:
                   1804: Copyright 2004, 2005, 2006, 2007 Andrew Fresh, All Rights Reserved.
                   1805:
1.15      andrew   1806: This program is free software; you can redistribute it and/or
                   1807: modify it under the same terms as Perl itself.
1.14      andrew   1808:
1.1       andrew   1809: =head1 SEE ALSO
                   1810:
                   1811: Palm::PDB(3)
                   1812:
                   1813: Palm::StdAppInfo(3)
1.11      andrew   1814:
                   1815: The Keyring for Palm OS website:
                   1816: L<http://gnukeyring.sourceforge.net/>
1.31      andrew   1817:
                   1818: The HACKING guide for palm keyring databases:
                   1819: L<http://gnukeyring.cvs.sourceforge.net/*checkout*/gnukeyring/keyring/HACKING>
1.24      andrew   1820:
                   1821: Johan Vromans also has a wxkeyring app that now uses this module, available
1.27      andrew   1822: from his website at L<http://www.vromans.org/johan/software/sw_palmkeyring.html>

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