/**
* @expectedException \Defuse\Crypto\Exception\WrongKeyOrModifiedCiphertextException
*/
public function testBitflip()
{
$key = Key::createNewRandomKey();
$password = PasswordLock::hashAndEncrypt('YELLOW SUBMARINE', $key);
$password[0] = \ord($password[0]) === 0 ? 255 : 0;
PasswordLock::decryptAndVerify('YELLOW SUBMARINE', $password, $key);
}
/**
* @expectedException \Defuse\Crypto\Exception\InvalidCiphertext
*/
public function testBitflip()
{
$key = \Defuse\Crypto\Key::LoadFromAsciiSafeString(\hex2bin('0102030405060708090a0b0c0d0e0f10'));
$password = PasswordLock::hashAndEncrypt('YELLOW SUBMARINE', $key);
$password[0] = \ord($password[0]) === 0 ? 255 : 0;
PasswordLock::decryptAndVerify('YELLOW SUBMARINE', $password, $key);
}
/**
* @expectedException \Defuse\Crypto\Exception\InvalidCiphertext
*/
public function testBitflip()
{
$key = \hex2bin('0102030405060708090a0b0c0d0e0f10');
$password = PasswordLock::hashAndEncrypt('YELLOW SUBMARINE', $key);
$password[0] = \ord($password[0]) === 0 ? 255 : 0;
PasswordLock::decryptAndVerify('YELLOW SUBMARINE', $password, $key);
}
/**
* Key rotation method -- decrypt with your old key then re-encrypt with your new key
*
* @param string $hashedValue
* @param \Defuse\Crypto\Key $newKey
*
* @return string
*/
public function shouldRecreate(string $hashedValue, Key $newKey) : string
{
return PasswordLock::rotateKey($hashedValue, $this->key, $newKey);
}
