setKey() public method

Keys can be of any length. RC2, itself, uses 8 to 1024 bit keys (eg. strlen($key) <= 128), however, we only use the first 128 bytes if $key has more then 128 bytes in it, and set $key to a single null byte if it is empty.
See also: phpseclib\Crypt\Common\SymmetricKey::setKey()
public setKey ( string $key, integer $t1 = false )
$key string
$t1 integer optional Effective key length in bits.
RC2 Class Documentation
Exemplo n.º 1
0
 /**
  * @dataProvider engineVectors
  */
 public function testVectors($engine, $engineName, $key, $keyLen, $plaintext, $ciphertext)
 {
     $rc2 = new RC2();
     $rc2->disablePadding();
     $rc2->setKeyLength($keyLen);
     $rc2->setKey(pack('H*', $key));
     // could also do $rc2->setKey(pack('H*', $key), $keyLen)
     if (!$rc2->isValidEngine($engine)) {
         self::markTestSkipped('Unable to initialize ' . $engineName . ' engine');
     }
     $rc2->setPreferredEngine($engine);
     $result = bin2hex($rc2->encrypt(pack('H*', $plaintext)));
     $this->assertEquals($result, $ciphertext, "Failed asserting that {$plaintext} yielded expected output in {$engineName} engine");
 }