public function testVectors()
{
$engines = array(Base::ENGINE_INTERNAL => 'internal', Base::ENGINE_MCRYPT => 'mcrypt', Base::ENGINE_OPENSSL => 'OpenSSL');
foreach ($engines as $engine => $name) {
$tf = new Twofish();
$tf->disablePadding();
// tests from https://www.schneier.com/code/ecb_ival.txt
// key size = 128
$key = pack('H*', '00000000000000000000000000000000');
$tf->setKey($key);
if (!$tf->isValidEngine($engine)) {
self::markTestSkipped('Unable to initialize ' . $name . ' engine');
}
$plaintext = pack('H*', '00000000000000000000000000000000');
$ciphertext = $tf->encrypt($plaintext);
$expected = strtolower('9F589F5CF6122C32B6BFEC2F2AE8C35A');
$this->assertEquals(bin2hex($ciphertext), $expected, "Failed asserting that {$plaintext} yielded expected output in {$name} engine");
$expected = bin2hex($plaintext);
$plaintext = bin2hex($tf->decrypt($ciphertext));
$this->assertEquals($plaintext, $expected, "Failed asserting that {$plaintext} yielded expected output in {$name} engine");
// key size = 192
$key = pack('H*', '0123456789ABCDEFFEDCBA98765432100011223344556677');
$tf->setKey($key);
if (!$tf->isValidEngine($engine)) {
self::markTestSkipped('Unable to initialize ' . $name . ' engine');
}
$plaintext = pack('H*', '00000000000000000000000000000000');
$ciphertext = $tf->encrypt($plaintext);
$expected = strtolower('CFD1D2E5A9BE9CDF501F13B892BD2248');
$this->assertEquals(bin2hex($ciphertext), $expected, "Failed asserting that {$plaintext} yielded expected output in {$name} engine");
$expected = bin2hex($plaintext);
$plaintext = bin2hex($tf->decrypt($ciphertext));
$this->assertEquals($plaintext, $expected, "Failed asserting that {$plaintext} yielded expected output in {$name} engine");
// key size = 256
$key = pack('H*', '0123456789ABCDEFFEDCBA987654321000112233445566778899AABBCCDDEEFF');
$tf->setKey($key);
if (!$tf->isValidEngine($engine)) {
self::markTestSkipped('Unable to initialize ' . $name . ' engine');
}
$plaintext = pack('H*', '00000000000000000000000000000000');
$ciphertext = $tf->encrypt($plaintext);
$expected = strtolower('37527BE0052334B89F0CFCCAE87CFA20');
$this->assertEquals(bin2hex($ciphertext), $expected, "Failed asserting that {$plaintext} yielded expected output in {$name} engine");
$expected = bin2hex($plaintext);
$plaintext = bin2hex($tf->decrypt($ciphertext));
$this->assertEquals($plaintext, $expected, "Failed asserting that {$plaintext} yielded expected output in {$name} engine");
}
}
