| Filename | /home/micha/.plenv/versions/5.38.2/lib/perl5/site_perl/5.38.2/x86_64-linux/Crypt/Mode/CBC.pm |
| Statements | Executed 8 statements in 182µs |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 1 | 1 | 1 | 155µs | 9.64ms | Crypt::Mode::CBC::BEGIN@9 |
| 1 | 1 | 1 | 8µs | 10µs | Crypt::Mode::CBC::BEGIN@5 |
| 1 | 1 | 1 | 3µs | 18µs | Crypt::Mode::CBC::BEGIN@6 |
| 0 | 0 | 0 | 0s | 0s | Crypt::Mode::CBC::CLONE_SKIP |
| 0 | 0 | 0 | 0s | 0s | Crypt::Mode::CBC::decrypt |
| 0 | 0 | 0 | 0s | 0s | Crypt::Mode::CBC::encrypt |
| Line | State ments |
Time on line |
Calls | Time in subs |
Code |
|---|---|---|---|---|---|
| 1 | package Crypt::Mode::CBC; | ||||
| 2 | |||||
| 3 | ### BEWARE - GENERATED FILE, DO NOT EDIT MANUALLY! | ||||
| 4 | |||||
| 5 | 2 | 16µs | 2 | 11µs | # spent 10µs (8+1) within Crypt::Mode::CBC::BEGIN@5 which was called:
# once (8µs+1µs) by Spreadsheet::ParseXLSX::Decryptor::BEGIN@10 at line 5 # spent 10µs making 1 call to Crypt::Mode::CBC::BEGIN@5
# spent 1µs making 1 call to strict::import |
| 6 | 2 | 20µs | 2 | 32µs | # spent 18µs (3+14) within Crypt::Mode::CBC::BEGIN@6 which was called:
# once (3µs+14µs) by Spreadsheet::ParseXLSX::Decryptor::BEGIN@10 at line 6 # spent 18µs making 1 call to Crypt::Mode::CBC::BEGIN@6
# spent 14µs making 1 call to warnings::import |
| 7 | 1 | 300ns | our $VERSION = '0.080'; | ||
| 8 | |||||
| 9 | 2 | 144µs | 2 | 9.64ms | # spent 9.64ms (155µs+9.48) within Crypt::Mode::CBC::BEGIN@9 which was called:
# once (155µs+9.48ms) by Spreadsheet::ParseXLSX::Decryptor::BEGIN@10 at line 9 # spent 9.64ms making 1 call to Crypt::Mode::CBC::BEGIN@9
# spent 1µs making 1 call to UNIVERSAL::import |
| 10 | |||||
| 11 | sub encrypt { | ||||
| 12 | my ($self, $pt) = (shift, shift); | ||||
| 13 | local $SIG{__DIE__} = \&CryptX::_croak; | ||||
| 14 | $self->start_encrypt(@_)->add($pt) . $self->finish; | ||||
| 15 | } | ||||
| 16 | |||||
| 17 | sub decrypt { | ||||
| 18 | my ($self, $ct) = (shift, shift); | ||||
| 19 | local $SIG{__DIE__} = \&CryptX::_croak; | ||||
| 20 | $self->start_decrypt(@_)->add($ct) . $self->finish; | ||||
| 21 | } | ||||
| 22 | |||||
| 23 | sub CLONE_SKIP { 1 } # prevent cloning | ||||
| 24 | |||||
| 25 | 1 | 2µs | 1; | ||
| 26 | |||||
| 27 | =pod | ||||
| 28 | |||||
| 29 | =head1 NAME | ||||
| 30 | |||||
| 31 | Crypt::Mode::CBC - Block cipher mode CBC [Cipher-block chaining] | ||||
| 32 | |||||
| 33 | =head1 SYNOPSIS | ||||
| 34 | |||||
| 35 | use Crypt::Mode::CBC; | ||||
| 36 | my $m = Crypt::Mode::CBC->new('AES'); | ||||
| 37 | |||||
| 38 | #(en|de)crypt at once | ||||
| 39 | my $ciphertext = $m->encrypt($plaintext, $key, $iv); | ||||
| 40 | my $plaintext = $m->decrypt($ciphertext, $key, $iv); | ||||
| 41 | |||||
| 42 | #encrypt more chunks | ||||
| 43 | $m->start_encrypt($key, $iv); | ||||
| 44 | my $ciphertext = $m->add('some data'); | ||||
| 45 | $ciphertext .= $m->add('more data'); | ||||
| 46 | $ciphertext .= $m->finish; | ||||
| 47 | |||||
| 48 | #decrypt more chunks | ||||
| 49 | $m->start_decrypt($key, $iv); | ||||
| 50 | my $plaintext = $m->add($some_ciphertext); | ||||
| 51 | $plaintext .= $m->add($more_ciphertext); | ||||
| 52 | $plaintext .= $m->finish; | ||||
| 53 | |||||
| 54 | =head1 DESCRIPTION | ||||
| 55 | |||||
| 56 | This module implements CBC cipher mode. B<NOTE:> it works only with ciphers from L<CryptX> (Crypt::Cipher::NNNN). | ||||
| 57 | |||||
| 58 | =head1 METHODS | ||||
| 59 | |||||
| 60 | =head2 new | ||||
| 61 | |||||
| 62 | my $m = Crypt::Mode::CBC->new($name); | ||||
| 63 | #or | ||||
| 64 | my $m = Crypt::Mode::CBC->new($name, $padding); | ||||
| 65 | #or | ||||
| 66 | my $m = Crypt::Mode::CBC->new($name, $padding, $cipher_rounds); | ||||
| 67 | |||||
| 68 | # $name ....... one of 'AES', 'Anubis', 'Blowfish', 'CAST5', 'Camellia', 'DES', 'DES_EDE', | ||||
| 69 | # 'KASUMI', 'Khazad', 'MULTI2', 'Noekeon', 'RC2', 'RC5', 'RC6', | ||||
| 70 | # 'SAFERP', 'SAFER_K128', 'SAFER_K64', 'SAFER_SK128', 'SAFER_SK64', | ||||
| 71 | # 'SEED', 'Skipjack', 'Twofish', 'XTEA', 'IDEA', 'Serpent' | ||||
| 72 | # simply any <NAME> for which there exists Crypt::Cipher::<NAME> | ||||
| 73 | # $padding .... 0 no padding (plaintext size has to be multiple of block length) | ||||
| 74 | # 1 PKCS5 padding, Crypt::CBC's "standard" - DEFAULT | ||||
| 75 | # 2 Crypt::CBC's "oneandzeroes" | ||||
| 76 | # 3 ANSI X.923 padding | ||||
| 77 | # 4 zero padding | ||||
| 78 | # 5 zero padding (+a block of zeros if the output length is divisible by the blocksize) | ||||
| 79 | # $cipher_rounds ... optional num of rounds for given cipher | ||||
| 80 | |||||
| 81 | =head2 encrypt | ||||
| 82 | |||||
| 83 | my $ciphertext = $m->encrypt($plaintext, $key, $iv); | ||||
| 84 | |||||
| 85 | =head2 decrypt | ||||
| 86 | |||||
| 87 | my $plaintext = $m->decrypt($ciphertext, $key, $iv); | ||||
| 88 | |||||
| 89 | =head2 start_encrypt | ||||
| 90 | |||||
| 91 | $m->start_encrypt($key, $iv); | ||||
| 92 | |||||
| 93 | =head2 start_decrypt | ||||
| 94 | |||||
| 95 | $m->start_decrypt($key, $iv); | ||||
| 96 | |||||
| 97 | =head2 add | ||||
| 98 | |||||
| 99 | # in encrypt mode | ||||
| 100 | my $plaintext = $m->add($ciphertext); | ||||
| 101 | |||||
| 102 | # in decrypt mode | ||||
| 103 | my $ciphertext = $m->add($plaintext); | ||||
| 104 | |||||
| 105 | =head2 finish | ||||
| 106 | |||||
| 107 | #encrypt more chunks | ||||
| 108 | $m->start_encrypt($key, $iv); | ||||
| 109 | my $ciphertext = ''; | ||||
| 110 | $ciphertext .= $m->add('some data'); | ||||
| 111 | $ciphertext .= $m->add('more data'); | ||||
| 112 | $ciphertext .= $m->finish; | ||||
| 113 | |||||
| 114 | #decrypt more chunks | ||||
| 115 | $m->start_decrypt($key, $iv); | ||||
| 116 | my $plaintext = ''; | ||||
| 117 | $plaintext .= $m->add($some_ciphertext); | ||||
| 118 | $plaintext .= $m->add($more_ciphertext); | ||||
| 119 | $plaintext .= $m->finish; | ||||
| 120 | |||||
| 121 | =head1 SEE ALSO | ||||
| 122 | |||||
| 123 | =over | ||||
| 124 | |||||
| 125 | =item * L<CryptX|CryptX>, L<Crypt::Cipher> | ||||
| 126 | |||||
| 127 | =item * L<Crypt::Cipher::AES>, L<Crypt::Cipher::Blowfish>, ... | ||||
| 128 | |||||
| 129 | =item * L<https://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher-block_chaining_.28CBC.29> | ||||
| 130 | |||||
| 131 | =back | ||||
| 132 | |||||
| 133 | =cut |