# HMAC-SHA-256 test vectors from draft-ietf-ipsec-ciph-sha-256-01.txt

use strict;

my $MODULE;

BEGIN {
	$MODULE = (-d "src") ? "Digest::SHA" : "Digest::SHA::PurePerl";
	eval "require $MODULE" || die $@;
	$MODULE->import(qw(hmac_sha256_hex));
}

BEGIN {
	if ($ENV{PERL_CORE}) {
		chdir 't' if -d 't';
		@INC = '../lib';
	}
}

my @data = map { eval } <DATA>;

my $numtests = scalar @data;
print "1..$numtests\n";

my $k1 = join( "", map { chr } (1 .. 32) );
my $k2 = join( "", map { chr } (1 .. 37) );

my @keys = (
	$k1,
	$k1,
	$k1,
	chr(0x0b) x 32,
	"Jefe",
	chr(0xaa) x 32,
	$k2,
	chr(0x0c) x 32,
	chr(0xaa) x 80,
	chr(0xaa) x 80
);

my @out = (
	"a21b1f5d4cf4f73a4dd939750f7a066a7f98cc131cb16a6692759021cfab8181",
	"104fdc1257328f08184ba73131c53caee698e36119421149ea8c712456697d30",
	"470305fc7e40fe34d3eeb3e773d95aab73acf0fd060447a5eb4595bf33a9d1a3",
	"198a607eb44bfbc69903a0f1cf2bbdc5ba0aa3f3d9ae3c1c7a3b1696a0b68cf7",
	"5bdcc146bf60754e6a042426089575c75a003f089d2739839dec58b964ec3843",
	"cdcb1220d1ecccea91e53aba3092f962e549fe6ce9ed7fdc43191fbde45c30b0",
	"d4633c17f6fb8d744c66dee0f8f074556ec4af55ef07998541468eb49bd2e917",
	"7546af01841fc09b1ab9c3749a5f1c17d4f589668a587b2700a9c97c1193cf42",
	"6953025ed96f0c09f80a96f78e6538dbe2e7b820e3dd970e7ddd39091b32352f",
	"6355ac22e890d0a3c8481a5ca4825bc884d3e7a1ff98a2fc2ac7d8e064c3b2e6"
);

	# do the first one using multi-argument data feed

my $testnum = 1;
my @args = split(//, shift @data);
print "not " unless hmac_sha256_hex(@args, shift @keys) eq shift @out;
print "ok ", $testnum++, "\n";

while (@data) {
	print "not " unless hmac_sha256_hex(shift @data, shift @keys)
		eq shift @out;
	print "ok ", $testnum++, "\n";
}

__DATA__
"abc"
"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopqabcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
"Hi There"
"what do ya want for nothing?"
chr(0xdd) x 50
chr(0xcd) x 50
"Test With Truncation"
"Test Using Larger Than Block-Size Key - Hash Key First"
"Test Using Larger Than Block-Size Key and Larger Than One Block-Size Data"