33 lines
665 B
Perl
33 lines
665 B
Perl
#!/usr/bin/env perl
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#
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$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
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unshift(@INC,$dir);
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require "hmac_sha1.pl";
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(!@ARV[0] && -f @ARGV[$#ARGV]) || die "usage: $0 [-verify] file";
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$verify=shift if (@ARGV[0] eq "-verify");
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sysopen(FD,@ARGV[0],0) || die "$!";
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binmode(FD);
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my $ctx = HMAC->Init("etaonrishdlcupfm");
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while (read(FD,$blob,4*1024)) { $ctx->Update($blob); }
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close(FD);
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my $signature = unpack("H*",$ctx->Final());
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print "HMAC-SHA1(@ARGV[0])= $signature\n";
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if ($verify) {
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open(FD,"<@ARGV[0].sha1") || die "$!";
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$line = <FD>;
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close(FD);
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exit(0) if ($line =~ /HMAC\-SHA1\([^\)]*\)=\s*([0-9a-f]+)/i &&
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$1 eq $signature);
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die "signature mismatch";
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}
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