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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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24
Task/Bitcoin-address-validation/Raku/bitcoin-address-validation.raku Normal file
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@ -0,0 +1,24 @@
sub sha256(blob8 $b) returns blob8 {
given run <openssl dgst -sha256 -binary>, :in, :out, :bin {
.in.write: $b;
.in.close;
return .out.slurp;
}
}
my $bitcoin-address = rx/
<< <+alnum-[0IOl]> ** 26..* >> # an address is at least 26 characters long
<?{
.subbuf(21, 4) eq sha256(sha256 .subbuf(0, 21)).subbuf(0, 4) given
blob8.new: <
1 2 3 4 5 6 7 8 9
A B C D E F G H J K L M N P Q R S T U V W X Y Z
a b c d e f g h i j k m n o p q r s t u v w x y z
>.pairs.invert.hash{$/.comb}
.reduce(* * 58 + *)
.polymod(256 xx 24)
.reverse;
}>
/;
say "Here is a bitcoin address: 1AGNa15ZQXAZUgFiqJ2i7Z2DPU2J6hW62i" ~~ $bitcoin-address;