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853b149561
This commit introduces initial support for mixed mode multihash cracking in Argon2. Although I was skeptical at first, the final solution turned out better than expected with only a minimal speed loss (1711H/s -> 1702H/s). Unit tests have been updated to generate random combinations of Argon2-I/D/ID with randomized m, t, and p values. So far, results look solid. Note: This is a complex change and may have undiscovered edge cases. Some optimization opportunities remain. JIT-based optimizations are not fully removed. We could also detect single-hash scenarios at runtime and disable self-tests to re-enable JIT. Currently, the kernel workload is sized based on the largest hash to avoid out-of-bound memory access.
80 lines
2.1 KiB
Perl
80 lines
2.1 KiB
Perl
#!/usr/bin/env perl
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##
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## Author......: See docs/credits.txt
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## License.....: MIT
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##
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use strict;
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use warnings;
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use MIME::Base64 qw (decode_base64 encode_base64);
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use Crypt::Argon2 qw (argon2_raw);
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sub module_constraints { [[0, 256], [32, 32], [-1, -1], [-1, -1], [-1, -1]] }
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sub module_generate_hash
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{
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my $word = shift;
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my $salt = shift;
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my $sign = shift // ("argon2d","argon2i","argon2id")[random_number (0, 2)];
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my $m = shift // (1 << random_number (12, 18));
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my $t = shift // random_number (1, 8);
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my $p = shift // random_number (1, 8);
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my $len = shift // random_number (1, 2) * 16;
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my $salt_bin = pack ("H*", $salt);
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my $digest_bin = argon2_raw ($sign, $word, $salt_bin, $t, $m . "k", $p, $len);
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my $salt_base64 = encode_base64 ($salt_bin, ""); $salt_base64 =~ s/=+$//;
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my $digest_base64 = encode_base64 ($digest_bin, ""); $digest_base64 =~ s/=+$//;
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my $hash = sprintf ('$%s$v=19$m=%d,t=%d,p=%d$%s$%s', $sign, $m, $t, $p, $salt_base64, $digest_base64);
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return $hash;
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}
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sub module_verify_hash
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{
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my $line = shift;
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my $idx = index ($line, ':');
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return unless $idx >= 0;
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my $hash = substr ($line, 0, $idx);
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my $word = substr ($line, $idx + 1);
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return unless ((substr ($hash, 0, 9) eq '$argon2d$')
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|| (substr ($hash, 0, 9) eq '$argon2i$')
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|| (substr ($hash, 0, 10) eq '$argon2id$'));
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my (undef, $signature, $version, $config, $salt, $digest) = split '\$', $hash;
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return unless defined $signature;
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return unless defined $version;
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return unless defined $config;
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return unless defined $salt;
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return unless defined $digest;
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my ($m_config, $t_config, $p_config) = split ("\,", $config);
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return unless ($version eq "v=19");
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my $m = (split ("=", $m_config))[1];
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my $t = (split ("=", $t_config))[1];
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my $p = (split ("=", $p_config))[1];
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$salt = decode_base64 ($salt);
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$digest = decode_base64 ($digest);
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my $word_packed = pack_if_HEX_notation ($word);
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my $new_hash = module_generate_hash ($word_packed, unpack ("H*", $salt), $signature, $m, $t, $p, length ($digest));
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return ($new_hash, $word);
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}
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1;
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