javax.crypto

인터페이스  SecretKey

클래스  Cipher CipherInputStream CipherOutputStream CipherSpi EncryptedPrivateKeyInfo ExemptionMechanism ExemptionMechanismSpi KeyAgreement KeyAgreementSpi KeyGenerator KeyGeneratorSpi Mac MacSpi NullCipher SealedObject SecretKeyFactory SecretKeyFactorySpi

예외  BadPaddingException ExemptionMechanismException IllegalBlockSizeException NoSuchPaddingException ShortBufferException