# Uses of Package
javax.crypto

Packages that use javax.crypto
Package
Description
java.security
Provides the classes and interfaces for the security framework.
javax.crypto
Provides the classes and interfaces for cryptographic operations.
javax.crypto.interfaces
Provides interfaces for Diffie-Hellman keys as defined in RSA Laboratories' PKCS #3.
javax.crypto.spec
Provides classes and interfaces for key specifications and algorithm parameter specifications.
javax.security.auth.kerberos
This package contains utility classes related to the Kerberos network authentication protocol.

Classes in javax.crypto used by java.security
Class
Description
SecretKey
A secret (symmetric) key.
Classes in javax.crypto used by javax.crypto
Class
Description
BadPaddingException
This exception is thrown when a particular padding mechanism is expected for the input data but the data is not padded properly.
Cipher
This class provides the functionality of a cryptographic cipher for encryption and decryption.
CipherSpi
This class defines the Service Provider Interface (SPI) for the `Cipher` class.
DecapsulateException
An exception that is thrown by the `KEM.Decapsulator.decapsulate(byte[])` method to denote an error during decapsulation.
ExemptionMechanism
This class provides the functionality of an exemption mechanism, examples of which are key recovery, key weakening, and key escrow.
ExemptionMechanismException
This is the generic ExemptionMechanism exception.
ExemptionMechanismSpi
This class defines the Service Provider Interface (SPI) for the `ExemptionMechanism` class.
IllegalBlockSizeException
This exception is thrown when the length of data provided to a block cipher is incorrect, i.e., does not match the block size of the cipher.
KEM
This class provides the functionality of a Key Encapsulation Mechanism (KEM).
KEM.Decapsulator
A decapsulator, generated by `KEM.newDecapsulator(java.security.PrivateKey)` on the KEM receiver side.
KEM.Encapsulated
This class specifies the return value of the encapsulate method of a Key Encapsulation Mechanism (KEM), which includes the shared secret (as a `SecretKey`), the key encapsulation message, and optional parameters.
KEM.Encapsulator
An encapsulator, generated by `KEM.newEncapsulator(java.security.PublicKey)` on the KEM sender side.
KEMSpi.DecapsulatorSpi
The KEM decapsulator implementation, generated by `KEMSpi.engineNewDecapsulator(java.security.PrivateKey, java.security.spec.AlgorithmParameterSpec)` on the KEM receiver side.
KEMSpi.EncapsulatorSpi
The KEM encapsulator implementation, generated by `KEMSpi.engineNewEncapsulator(java.security.PublicKey, java.security.spec.AlgorithmParameterSpec, java.security.SecureRandom)` on the KEM sender side.
KeyAgreement
This class provides the functionality of a key agreement (or key exchange) protocol.
KeyAgreementSpi
This class defines the Service Provider Interface (SPI) for the `KeyAgreement` class.
KeyGenerator
This class provides the functionality of a secret (symmetric) key generator.
KeyGeneratorSpi
This class defines the Service Provider Interface (SPI) for the `KeyGenerator` class.
Mac
This class provides the functionality of a "Message Authentication Code" (MAC) algorithm.
MacSpi
This class defines the Service Provider Interface (SPI) for the `Mac` class.
NoSuchPaddingException
This exception is thrown when a particular padding mechanism is requested but is not available in the environment.
SealedObject
This class enables a programmer to create an object and protect its confidentiality with a cryptographic algorithm.
SecretKey
A secret (symmetric) key.
SecretKeyFactory
This class represents a factory for secret keys.
SecretKeyFactorySpi
This class defines the Service Provider Interface (SPI) for the `SecretKeyFactory` class.
ShortBufferException
This exception is thrown when an output buffer provided by the user is too short to hold the operation result.
Classes in javax.crypto used by javax.crypto.interfaces
Class
Description
SecretKey
A secret (symmetric) key.
Classes in javax.crypto used by javax.crypto.spec
Class
Description
SecretKey
A secret (symmetric) key.
Classes in javax.crypto used by javax.security.auth.kerberos
Class
Description
SecretKey
A secret (symmetric) key.