Re^2: Decent crypto library?

[vsespb]

Thank you.

Crypt::Cipher::AES - there was a typo in my post. I already tried this one. And it's as slow as others in Crypt::CBC mode

Crypt::MCrypt - Cannot get it working with RIJNDAEL-256 (I tried also "aes", "aes256") - getting segfaults

[Anonymous Monk]

If you care about performance you have to use Crypt::Cipher::AES with Crypt::Mode::CBC

See example at https://metacpan.org/pod/Crypt::Mode::CBC

[vsespb]

Thank you. 5.5 times slower. Not so bad.

use strict;
use warnings;

use Digest::MD5 qw/md5_hex/;
use Time::HiRes qw/tv_interval gettimeofday/;
use Crypt::Mode::CBC;

my $key = "\241(_E\203\223\337\322\317\214\24'\352\231\352\177W\\\6^\3
+21a\3\6:-qQ\r\225&\264";
my $IV = "<C\202\305\377\305\205\24\211\321\257\372z\363\333\357";

my $IV_hex = unpack('H*', $IV);
my $key_hex = unpack('H*', $key);

my $m = Crypt::Mode::CBC->new('AES');
my $s = "x" x 100_000_000;

my $ciphertext = $m->encrypt($s, $key, $IV);

my ($t0, $t1);
$t0 = [gettimeofday];
my $ss = $m->decrypt($ciphertext, $key, $IV);
$t1 = [gettimeofday];

die unless $ss eq $s;

print "decrypt Crypt::Mode::CBC\t";
print tv_interval $t0, $t1;
print "\n";

open my $f, ">", "/tmp/enctest";
binmode $f;
print $f $ciphertext;
close $f;

my $sdata_md5 = md5_hex($s);


$t0 = [gettimeofday];
unlink '/tmp/enctest.out';
system 'openssl', 'enc', '-aes-256-cbc', '-d', '-in', '/tmp/enctest', 
+'-out', '/tmp/enctest.out', '-K',  $key_hex, '-iv', $IV_hex;
$t1 = [gettimeofday];

print "decrypt OPENSSL\t";
print tv_interval $t0, $t1;
print "\n";
die unless `md5sum /tmp/enctest.out` =~ /$sdata_md5/;
__END__
decrypt Crypt::Mode::CBC    0.91427
decrypt OPENSSL    0.149651