unpackMessageForDecryption() public static method

Should return exactly 6 elements.
public static unpackMessageForDecryption ( string $ciphertext ) : array
$ciphertext string
return array
Crypto Class Documentation
Exemplo n.º 1
0
 /**
  * @covers Symmetric::unpackMessageForDecryption()
  */
 public function testUnpack()
 {
     $key = new EncryptionKey(new HiddenString(\str_repeat('A', 32)));
     // Randomly sized plaintext
     $size = \Sodium\randombytes_uniform(1023) + 1;
     $plaintext = \Sodium\randombytes_buf($size);
     $message = Symmetric::encrypt(new HiddenString($plaintext), $key, true);
     // Let's unpack our message
     $unpacked = Symmetric::unpackMessageForDecryption($message);
     // Now to test our expected results!
     $this->assertSame(Util::safeStrlen($unpacked[0]), Halite::VERSION_TAG_LEN);
     $this->assertTrue($unpacked[1] instanceof \ParagonIE\Halite\Symmetric\Config);
     $config = $unpacked[1];
     if ($config instanceof \ParagonIE\Halite\Symmetric\Config) {
         $this->assertSame(Util::safeStrlen($unpacked[2]), $config->HKDF_SALT_LEN);
         $this->assertSame(Util::safeStrlen($unpacked[3]), \Sodium\CRYPTO_STREAM_NONCEBYTES);
         $this->assertSame(Util::safeStrlen($unpacked[4]), Util::safeStrlen($message) - (Halite::VERSION_TAG_LEN + $config->HKDF_SALT_LEN + \Sodium\CRYPTO_STREAM_NONCEBYTES + $config->MAC_SIZE));
         $this->assertSame(Util::safeStrlen($unpacked[5]), $config->MAC_SIZE);
     } else {
         $this->fail('Cannot continue');
     }
 }