See: Description
| Interface | Description |
|---|---|
| SecretKey |
A secret (symmetric) key.
|
| Class | Description |
|---|---|
| Cipher |
This class provides the functionality of a cryptographic cipher for
encryption and decryption.
|
| CipherInputStream |
A CipherInputStream is composed of an InputStream and a Cipher so
that read() methods return data that are read in from the
underlying InputStream but have been additionally processed by the
Cipher.
|
| CipherOutputStream |
A CipherOutputStream is composed of an OutputStream and a Cipher so
that write() methods first process the data before writing them out
to the underlying OutputStream.
|
| CipherSpi |
This class defines the Service Provider Interface (SPI)
for the
Cipher class. |
| EncryptedPrivateKeyInfo |
This class implements the
EncryptedPrivateKeyInfo type
as defined in PKCS #8. |
| ExemptionMechanism |
This class provides the functionality of an exemption mechanism, examples
of which are key recovery, key weakening, and
key escrow.
|
| ExemptionMechanismSpi |
This class defines the Service Provider Interface (SPI)
for the
ExemptionMechanism class. |
| 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. |
| NullCipher |
The NullCipher class is a class that provides an
"identity cipher" -- one that does not tranform the plaintext.
|
| SealedObject |
This class enables a programmer to create an object and protect its
confidentiality with a cryptographic algorithm.
|
| SecretKeyFactory |
This class represents a factory for secret keys.
|
| SecretKeyFactorySpi |
This class defines the Service Provider Interface (SPI)
for the
SecretKeyFactory class. |
| Exception | Description |
|---|---|
| AEADBadTagException |
This exception is thrown when a
Cipher operating in
an AEAD mode (such as GCM/CCM) is unable to verify the supplied
authentication tag. |
| BadPaddingException |
This exception is thrown when a particular padding mechanism is
expected for the input data but the data is not padded properly.
|
| ExemptionMechanismException |
This is the generic ExemptionMechanism exception.
|
| 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.
|
| NoSuchPaddingException |
This exception is thrown when a particular padding mechanism is
requested but is not available in the environment.
|
| ShortBufferException |
This exception is thrown when an output buffer provided by the user
is too short to hold the operation result.
|
Support for encryption includes symmetric, asymmetric, block, and stream ciphers. This package also supports secure streams and sealed objects.
Many of the classes provided in this package are provider-based. The class itself defines a programming interface to which applications may write. The implementations themselves may then be written by independent third-party vendors and plugged in seamlessly as needed. Therefore application developers may take advantage of any number of provider-based implementations without having to add or rewrite code.
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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