43 lines
1.1 KiB
Perl
43 lines
1.1 KiB
Perl
package Nix::Crypto;
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use strict;
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use MIME::Base64;
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use Nix::Store;
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use Nix::Config;
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use IPC::Open2;
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our @ISA = qw(Exporter);
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our @EXPORT = qw(signString isValidSignature);
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sub signString {
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my ($privateKeyFile, $s) = @_;
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my $hash = hashString("sha256", 0, $s);
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my ($from, $to);
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my $pid = open2($from, $to, $Nix::Config::openssl, "rsautl", "-sign", "-inkey", $privateKeyFile);
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print $to $hash;
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close $to;
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local $/ = undef;
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my $sig = <$from>;
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close $from;
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waitpid($pid, 0);
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die "$0: OpenSSL returned exit code $? while signing hash\n" if $? != 0;
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my $sig64 = encode_base64($sig, "");
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return $sig64;
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}
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sub isValidSignature {
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my ($publicKeyFile, $sig64, $s) = @_;
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my ($from, $to);
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my $pid = open2($from, $to, $Nix::Config::openssl, "rsautl", "-verify", "-inkey", $publicKeyFile, "-pubin");
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print $to decode_base64($sig64);
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close $to;
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my $decoded = <$from>;
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close $from;
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waitpid($pid, 0);
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return 0 if $? != 0;
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my $hash = hashString("sha256", 0, $s);
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return $decoded eq $hash;
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}
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1;
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