#! perl

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

use Test::More;

use Crypt::Bear::HMAC;
 
my @data = map { eval } <DATA>;
 
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 first one using multi-argument data feed and binary output
 

sub hmac_sha256 {
	my ($data, $key_raw) = @_;
	my $key = Crypt::Bear::HMAC::Key->new('sha256', $key_raw);
	my $hasher = Crypt::Bear::HMAC->new($key);
	$hasher->update($data);
	return $hasher->out;
}

sub hmac_sha256_hex {
	my ($data, $key) = @_;
	return unpack "H*", hmac_sha256($data, $key);
}

while (@data) {
        is hmac_sha256_hex(shift @data, shift @keys), shift @out;
}

done_testing;
 
__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"
