MWCryptHKDFTest.php

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<?php
class MWCryptHKDFTest extends MediaWikiTestCase {

    public function testGenerate() {
        $a = MWCryptHKDF::generateHex( 64 );
        $b = MWCryptHKDF::generateHex( 64 );

        $this->assertTrue( strlen( $a ) == 64, "MWCryptHKDF produced fewer bytes than expected" );
        $this->assertTrue( strlen( $b ) == 64, "MWCryptHKDF produced fewer bytes than expected" );
        $this->assertFalse( $a == $b, "Two runs of MWCryptHKDF produced the same result." );
    }

    public function testRfc5869( $hash, $ikm, $salt, $info, $L, $prk, $okm ) {
        $ikm = pack( 'H*', $ikm );
        $salt = pack( 'H*', $salt );
        $info = pack( 'H*', $info );
        $okm = pack( 'H*', $okm );
        $result = MWCryptHKDF::HKDF( $hash, $ikm, $salt, $info, $L );
        $this->assertEquals( $okm, $result );
    }

    public static function providerRfc5869() {

        return array(
            // A.1
            array( 'sha256',
                '0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b', // ikm
                '000102030405060708090a0b0c', // salt
                'f0f1f2f3f4f5f6f7f8f9', // context
                42, // bytes
                '077709362c2e32df0ddc3f0dc47bba6390b6c73bb50f9c3122ec844ad7c2b3e5', // prk
                '3cb25f25faacd57a90434f64d0362f2a2d2d0a90cf1a5a4c5db02d56ecc4c5bf34007208d5b887185865' // okm
            ),
            // A.2
            array( 'sha256',
                '000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f404142434445464748494a4b4c4d4e4f',
                '606162636465666768696a6b6c6d6e6f707172737475767778797a7b7c7d7e7f808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9fa0a1a2a3a4a5a6a7a8a9aaabacadaeaf',
                'b0b1b2b3b4b5b6b7b8b9babbbcbdbebfc0c1c2c3c4c5c6c7c8c9cacbcccdcecfd0d1d2d3d4d5d6d7d8d9dadbdcdddedfe0e1e2e3e4e5e6e7e8e9eaebecedeeeff0f1f2f3f4f5f6f7f8f9fafbfcfdfeff',
                82,
                '06a6b88c5853361a06104c9ceb35b45cef760014904671014a193f40c15fc244',
                'b11e398dc80327a1c8e7f78c596a49344f012eda2d4efad8a050cc4c19afa97c59045a99cac7827271cb41c65e590e09da3275600c2f09b8367793a9aca3db71cc30c58179ec3e87c14c01d5c1f3434f1d87'
            ),
            // A.3
            array( 'sha256',
                '0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b', // ikm
                '', // salt
                '', // context
                42, // bytes
                '19ef24a32c717b167f33a91d6f648bdf96596776afdb6377ac434c1c293ccb04', // prk
                '8da4e775a563c18f715f802a063c5a31b8a11f5c5ee1879ec3454e5f3c738d2d9d201395faa4b61a96c8' // okm
            ),
            // A.4
            array( 'sha1',
                '0b0b0b0b0b0b0b0b0b0b0b', // ikm
                '000102030405060708090a0b0c', // salt
                'f0f1f2f3f4f5f6f7f8f9', // context
                42, // bytes
                '9b6c18c432a7bf8f0e71c8eb88f4b30baa2ba243', // prk
                '085a01ea1b10f36933068b56efa5ad81a4f14b822f5b091568a9cdd4f155fda2c22e422478d305f3f896' // okm
            ),
            // A.5
            array( 'sha1',
                '000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f404142434445464748494a4b4c4d4e4f', // ikm
                '606162636465666768696a6b6c6d6e6f707172737475767778797a7b7c7d7e7f808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9fa0a1a2a3a4a5a6a7a8a9aaabacadaeaf', // salt
                'b0b1b2b3b4b5b6b7b8b9babbbcbdbebfc0c1c2c3c4c5c6c7c8c9cacbcccdcecfd0d1d2d3d4d5d6d7d8d9dadbdcdddedfe0e1e2e3e4e5e6e7e8e9eaebecedeeeff0f1f2f3f4f5f6f7f8f9fafbfcfdfeff', // context
                82, // bytes
                '8adae09a2a307059478d309b26c4115a224cfaf6', // prk
                '0bd770a74d1160f7c9f12cd5912a06ebff6adcae899d92191fe4305673ba2ffe8fa3f1a4e5ad79f3f334b3b202b2173c486ea37ce3d397ed034c7f9dfeb15c5e927336d0441f4c4300e2cff0d0900b52d3b4' // okm
            ),
        );

    }


}