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113 lines
2.5 KiB
Perl
113 lines
2.5 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 Bitcoin::Crypto qw (btc_prv btc_extprv);
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use Bitcoin::Crypto::Base58 qw (decode_base58check);
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sub module_constraints { [[52, 52], [-1, -1], [-1, -1], [-1, -1], [-1, -1]] }
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# Note:
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# We expect valid WIF format which for BTC private address is 51/52 base58 characters long.
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# For compressed P2PKH the length of the WIF is always 52.
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# Standard test.pl is generating random passwords consisting only from digits.
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# That does not work for this mode.
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# So we have introduced new function: module_get_random_password ()
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# that will help to generate random valid password for the module from a given seed.
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#
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# It will be called from test.pl if it exists in the module, otherwise everything
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# will work as in legacy code. Search test.pl for module_get_random_password ()
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sub module_generate_hash
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{
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my $word = shift; # expecting valid WIF formated private key
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my @is_valid_base58 = eval
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{
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decode_base58check ($word); # or we could use validate_wif ()
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};
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return if (! @is_valid_base58);
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# validate WIF (check password, "verify")
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my $priv = "";
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my @is_valid_wif = eval
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{
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$priv = btc_prv->from_wif ($word);
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};
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return if (! @is_valid_wif);
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return if ($priv->compressed != 1);
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my $pub = $priv->get_public_key ();
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my $hash = $pub->get_segwit_address ();
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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 $idx = rindex ($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, $idx + 1);
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return unless (defined ($hash));
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return unless (defined ($word));
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my @is_valid_base58 = eval
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{
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decode_base58check ($word);
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};
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return unless (@is_valid_base58);
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return unless ($hash =~ m/^bc1[qpzry9x8gf2tvdw0s3jn54khce6mua7l]*$/); # bech32/base32 encoding
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return unless (length ($word) == 52);
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my $first_byte = substr ($word, 0, 1);
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return unless (($first_byte eq "K") || ($first_byte eq "L"));
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my $new_hash = module_generate_hash ($word);
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return ($new_hash, $word);
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}
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sub module_get_random_password
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{
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# new function added to generate valid password for an algorithm
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# from a given seed as a parameter
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my $seed = shift;
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my $master_key = btc_extprv->from_seed ($seed); # expecting random seed from test.pl
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my $derived_key = $master_key->derive_key ("m/0'");
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my $priv = $derived_key->get_basic_key ();
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my $IS_COMPRESSED = 1;
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$priv->set_compressed ($IS_COMPRESSED);
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# return WIF format
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return $priv->to_wif ();
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}
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1;
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