OpenJDK 1.22 · sun.security.pkcs11.P11PBECipher · APIdia, the JavaDoc alternative

Modifier and Type	Field and Description
private final int	blkSize
private final P11Cipher	cipher
private final String	pbeAlg
private final PBEUtil.PBES2Params	pbes2Params
private final P11SecretKeyFactory.PBEKeyInfo	svcPbeKi
private final Token	token

Access	Constructor and Description
pack-priv	P11PBECipher(Token token, String pbeAlg, long cipherMech)

Method Summary

Modifier and Type	Method and Description
protected byte[]	engineDoFinal(byte[] the input buffer input, int the offset in `input` where the input starts inputOffset, int the input length inputLen) Implements abstract javax.crypto.CipherSpi.engineDoFinal. Encrypts or decrypts data in a single-part operation, or finishes a multiple-part operation.
protected int	engineDoFinal(byte[] the input buffer input, int the offset in `input` where the input starts inputOffset, int the input length inputLen, byte[] the buffer for the result output, int the offset in `output` where the result is stored outputOffset) Implements abstract javax.crypto.CipherSpi.engineDoFinal. Encrypts or decrypts data in a single-part operation, or finishes a multiple-part operation.
protected int	engineGetBlockSize() Implements abstract javax.crypto.CipherSpi.engineGetBlockSize. Returns the block size (in bytes).
protected byte[]	engineGetIV() Implements abstract javax.crypto.CipherSpi.engineGetIV. Returns the initialization vector (IV) in a new buffer.
protected int	engineGetKeySize(Key the key object key) Overrides javax.crypto.CipherSpi.engineGetKeySize. Returns the key size of the given key object in bits.
protected int	engineGetOutputSize(int the input length (in bytes) inputLen) Implements abstract javax.crypto.CipherSpi.engineGetOutputSize. Returns the length in bytes that an output buffer would need to be in order to hold the result of the next `update` or `doFinal` operation, given the input length `inputLen` (in bytes).
protected AlgorithmParameters	engineGetParameters() Implements abstract javax.crypto.CipherSpi.engineGetParameters. Returns the parameters used with this cipher.
protected void	engineInit(int the operation mode of this `CipherSpi` object (this is one of the following: `ENCRYPT_MODE`, `DECRYPT_MODE`, `WRAP_MODE` or `UNWRAP_MODE`) opmode, Key the encryption key key, SecureRandom the source of randomness random) Implements abstract javax.crypto.CipherSpi.engineInit. Initializes this `CipherSpi` object with a key and a source of randomness.
protected void	engineInit(int the operation mode of this `CipherSpi` object (this is one of the following: `ENCRYPT_MODE`, `DECRYPT_MODE`, `WRAP_MODE`, or `UNWRAP_MODE`) opmode, Key the encryption key key, AlgorithmParameterSpec the algorithm parameters params, SecureRandom the source of randomness random) Implements abstract javax.crypto.CipherSpi.engineInit. Initializes this `CipherSpi` object with a key, a set of algorithm parameters, and a source of randomness.
protected void	engineInit(int the operation mode of this `CipherSpi` object (this is one of the following: `ENCRYPT_MODE`, `DECRYPT_MODE`, `WRAP_MODE`, or `UNWRAP_MODE`) opmode, Key the encryption key key, AlgorithmParameters the algorithm parameters params, SecureRandom the source of randomness random) Implements abstract javax.crypto.CipherSpi.engineInit. Initializes this `CipherSpi` object with a key, a set of algorithm parameters, and a source of randomness.
protected void	engineSetMode(String the cipher mode mode) Implements abstract javax.crypto.CipherSpi.engineSetMode. Sets the mode of this cipher.
protected void	engineSetPadding(String the padding mechanism padding) Implements abstract javax.crypto.CipherSpi.engineSetPadding. Sets the padding mechanism of this cipher.
protected byte[]	engineUpdate(byte[] the input buffer input, int the offset in `input` where the input starts inputOffset, int the input length inputLen) Implements abstract javax.crypto.CipherSpi.engineUpdate. Continues a multiple-part encryption or decryption operation (depending on how this `CipherSpi` object was initialized), processing another data part.
protected int	engineUpdate(byte[] the input buffer input, int the offset in `input` where the input starts inputOffset, int the input length inputLen, byte[] the buffer for the result output, int the offset in `output` where the result is stored outputOffset) Implements abstract javax.crypto.CipherSpi.engineUpdate. Continues a multiple-part encryption or decryption operation (depending on how this `CipherSpi` object was initialized), processing another data part.

Inherited from javax.crypto.CipherSpi:: engineDoFinal engineUnwrap engineUpdate engineUpdateAAD engineUpdateAAD engineWrap

blkSize	back to summary
private final int blkSize

cipher	back to summary
private final P11Cipher cipher

pbeAlg	back to summary
private final String pbeAlg

pbes2Params	back to summary
private final PBEUtil.PBES2Params pbes2Params

svcPbeKi	back to summary
private final P11SecretKeyFactory.PBEKeyInfo svcPbeKi

token	back to summary
private final Token token

P11PBECipher	back to summary
pack-priv P11PBECipher(Token token, String pbeAlg, long cipherMech) throws PKCS11Exception, NoSuchAlgorithmException

Method Detail

engineDoFinal back to summary

engineDoFinal	back to summary
protected byte[] engineDoFinal(byte[] input, int inputOffset, int inputLen) throws IllegalBlockSizeException, BadPaddingException Implements abstract javax.crypto.CipherSpi.engineDoFinal. Doc from javax.crypto.CipherSpi.engineDoFinal. Encrypts or decrypts data in a single-part operation, or finishes a multiple-part operation. The data is encrypted or decrypted, depending on how this `CipherSpi` object was initialized. The first `inputLen` bytes in the `input` buffer, starting at `inputOffset` inclusive, and any input bytes that may have been buffered during a previous `update` operation, are processed, with padding (if requested) being applied. If an AEAD mode (such as GCM or CCM) is being used, the authentication tag is appended in the case of encryption, or verified in the case of decryption. The result is stored in a new buffer. Upon finishing, this method resets this `CipherSpi` object to the state it was in when previously initialized via a call to `engineInit`. That is, the object is reset and available to encrypt or decrypt (depending on the operation mode that was specified in the call to `engineInit`) more data. Note if any exception is thrown, this `CipherSpi` object may need to be reset before it can be used again. Parameters input:byte[] the input buffer inputOffset:int the offset in `input` where the input starts inputLen:int the input length Returns:byte[] the new buffer with the result Annotations @Override Exceptions IllegalBlockSizeException: if this cipher is a block cipher, no padding has been requested (only in encryption mode), and the total input length of the data processed by this cipher is not a multiple of block size; or if this encryption algorithm is unable to process the input data provided BadPaddingException: if this `CipherSpi` object is in decryption mode, and (un)padding has been requested, but the decrypted data is not bounded by the appropriate padding bytes

protected byte[] engineDoFinal(byte[] input, int inputOffset, int inputLen) throws IllegalBlockSizeException, BadPaddingException

Implements abstract javax.crypto.CipherSpi.engineDoFinal.

Doc from javax.crypto.CipherSpi.engineDoFinal.

Encrypts or decrypts data in a single-part operation, or finishes a multiple-part operation. The data is encrypted or decrypted, depending on how this CipherSpi object was initialized.

The first inputLen bytes in the input buffer, starting at inputOffset inclusive, and any input bytes that may have been buffered during a previous update operation, are processed, with padding (if requested) being applied. If an AEAD mode (such as GCM or CCM) is being used, the authentication tag is appended in the case of encryption, or verified in the case of decryption. The result is stored in a new buffer.

Upon finishing, this method resets this CipherSpi object to the state it was in when previously initialized via a call to engineInit. That is, the object is reset and available to encrypt or decrypt (depending on the operation mode that was specified in the call to engineInit) more data.

Note

if any exception is thrown, this CipherSpi object may need to be reset before it can be used again.

Parameters

input:byte[]: the input buffer
inputOffset:int: the offset in input where the input starts
inputLen:int: the input length

Returns:byte[]

the new buffer with the result

Annotations

@Override

Exceptions

IllegalBlockSizeException:: if this cipher is a block cipher, no padding has been requested (only in encryption mode), and the total input length of the data processed by this cipher is not a multiple of block size; or if this encryption algorithm is unable to process the input data provided
BadPaddingException:: if this CipherSpi object is in decryption mode, and (un)padding has been requested, but the decrypted data is not bounded by the appropriate padding bytes

engineDoFinal back to summary

engineDoFinal	back to summary
protected int engineDoFinal(byte[] input, int inputOffset, int inputLen, byte[] output, int outputOffset) throws ShortBufferException, IllegalBlockSizeException, BadPaddingException Implements abstract javax.crypto.CipherSpi.engineDoFinal. Doc from javax.crypto.CipherSpi.engineDoFinal. Encrypts or decrypts data in a single-part operation, or finishes a multiple-part operation. The data is encrypted or decrypted, depending on how this `CipherSpi` object was initialized. The first `inputLen` bytes in the `input` buffer, starting at `inputOffset` inclusive, and any input bytes that may have been buffered during a previous `update` operation, are processed, with padding (if requested) being applied. If an AEAD mode such as GCM or CCM is being used, the authentication tag is appended in the case of encryption, or verified in the case of decryption. The result is stored in the `output` buffer, starting at `outputOffset` inclusive. If the `output` buffer is too small to hold the result, a `ShortBufferException` is thrown. Upon finishing, this method resets this `CipherSpi` object to the state it was in when previously initialized via a call to `engineInit`. That is, the object is reset and available to encrypt or decrypt (depending on the operation mode that was specified in the call to `engineInit`) more data. Note if any exception is thrown, this `CipherSpi` object may need to be reset before it can be used again. Parameters input:byte[] the input buffer inputOffset:int the offset in `input` where the input starts inputLen:int the input length output:byte[] the buffer for the result outputOffset:int the offset in `output` where the result is stored Returns:int the number of bytes stored in `output` Annotations @Override Exceptions ShortBufferException: if the given output buffer is too small to hold the result IllegalBlockSizeException: if this cipher is a block cipher, no padding has been requested (only in encryption mode), and the total input length of the data processed by this cipher is not a multiple of block size; or if this encryption algorithm is unable to process the input data provided BadPaddingException: if this `CipherSpi` object is in decryption mode, and (un)padding has been requested, but the decrypted data is not bounded by the appropriate padding bytes

protected int engineDoFinal(byte[] input, int inputOffset, int inputLen, byte[] output, int outputOffset) throws ShortBufferException, IllegalBlockSizeException, BadPaddingException

Implements abstract javax.crypto.CipherSpi.engineDoFinal.

Doc from javax.crypto.CipherSpi.engineDoFinal.

Encrypts or decrypts data in a single-part operation, or finishes a multiple-part operation. The data is encrypted or decrypted, depending on how this CipherSpi object was initialized.

The first inputLen bytes in the input buffer, starting at inputOffset inclusive, and any input bytes that may have been buffered during a previous update operation, are processed, with padding (if requested) being applied. If an AEAD mode such as GCM or CCM is being used, the authentication tag is appended in the case of encryption, or verified in the case of decryption. The result is stored in the output buffer, starting at outputOffset inclusive.

If the output buffer is too small to hold the result, a ShortBufferException is thrown.

Note

if any exception is thrown, this CipherSpi object may need to be reset before it can be used again.

Parameters

input:byte[]: the input buffer
inputOffset:int: the offset in input where the input starts
inputLen:int: the input length
output:byte[]: the buffer for the result
outputOffset:int: the offset in output where the result is stored

Returns:int

the number of bytes stored in output

Annotations

@Override

Exceptions

ShortBufferException:: if the given output buffer is too small to hold the result
IllegalBlockSizeException:: if this cipher is a block cipher, no padding has been requested (only in encryption mode), and the total input length of the data processed by this cipher is not a multiple of block size; or if this encryption algorithm is unable to process the input data provided
BadPaddingException:: if this CipherSpi object is in decryption mode, and (un)padding has been requested, but the decrypted data is not bounded by the appropriate padding bytes

engineGetBlockSize	back to summary
protected int engineGetBlockSize() Implements abstract javax.crypto.CipherSpi.engineGetBlockSize. Doc from javax.crypto.CipherSpi.engineGetBlockSize. Returns the block size (in bytes). Returns:int the block size (in bytes), or 0 if the algorithm is not a block cipher Annotations @Override

engineGetBlockSize

back to summary

protected int engineGetBlockSize()

Implements abstract javax.crypto.CipherSpi.engineGetBlockSize.

Doc from javax.crypto.CipherSpi.engineGetBlockSize.

Returns the block size (in bytes).

Returns:int

the block size (in bytes), or 0 if the algorithm is not a block cipher

Annotations

@Override

engineGetIV back to summary

engineGetIV	back to summary
protected byte[] engineGetIV() Implements abstract javax.crypto.CipherSpi.engineGetIV. Doc from javax.crypto.CipherSpi.engineGetIV. Returns the initialization vector (IV) in a new buffer. This is useful in the context of password-based encryption or decryption, where the IV is derived from a user-provided passphrase. Returns:byte[] the initialization vector in a new buffer, or `null` if the algorithm does not use an IV, or if the IV has not yet been set Annotations @Override

protected byte[] engineGetIV()

Implements abstract javax.crypto.CipherSpi.engineGetIV.

Doc from javax.crypto.CipherSpi.engineGetIV.

Returns the initialization vector (IV) in a new buffer.

This is useful in the context of password-based encryption or decryption, where the IV is derived from a user-provided passphrase.

Returns:byte[]

the initialization vector in a new buffer, or null if the algorithm does not use an IV, or if the IV has not yet been set

Annotations

@Override

engineGetKeySize back to summary

engineGetKeySize	back to summary
protected int engineGetKeySize(Key key) Overrides javax.crypto.CipherSpi.engineGetKeySize. Doc from javax.crypto.CipherSpi.engineGetKeySize. Returns the key size of the given key object in bits. This concrete method has been added to this previously-defined abstract class. It throws an `UnsupportedOperationException` if it is not overridden by the provider. Parameters key:Key the key object Returns:int the key size of the given key object Annotations @Override

protected int engineGetKeySize(Key key)

Overrides javax.crypto.CipherSpi.engineGetKeySize.

Doc from javax.crypto.CipherSpi.engineGetKeySize.

Returns the key size of the given key object in bits.

This concrete method has been added to this previously-defined abstract class. It throws an UnsupportedOperationException if it is not overridden by the provider.

Parameters

key:Key: the key object

Returns:int

the key size of the given key object

Annotations

@Override

engineGetOutputSize back to summary

engineGetOutputSize	back to summary
protected int engineGetOutputSize(int inputLen) Implements abstract javax.crypto.CipherSpi.engineGetOutputSize. Doc from javax.crypto.CipherSpi.engineGetOutputSize. Returns the length in bytes that an output buffer would need to be in order to hold the result of the next `update` or `doFinal` operation, given the input length `inputLen` (in bytes). This call takes into account any unprocessed (buffered) data from a previous `update` call, padding, and AEAD tagging. The actual output length of the next `update` or `doFinal` call may be smaller than the length returned by this method. Parameters inputLen:int the input length (in bytes) Returns:int the required output buffer size (in bytes) Annotations @Override

protected int engineGetOutputSize(int inputLen)

Implements abstract javax.crypto.CipherSpi.engineGetOutputSize.

Doc from javax.crypto.CipherSpi.engineGetOutputSize.

Returns the length in bytes that an output buffer would need to be in order to hold the result of the next update or doFinal operation, given the input length inputLen (in bytes).

This call takes into account any unprocessed (buffered) data from a previous update call, padding, and AEAD tagging.

The actual output length of the next update or doFinal call may be smaller than the length returned by this method.

Parameters

inputLen:int: the input length (in bytes)

Returns:int

the required output buffer size (in bytes)

Annotations

@Override

engineGetParameters back to summary

engineGetParameters	back to summary
protected AlgorithmParameters engineGetParameters() Implements abstract javax.crypto.CipherSpi.engineGetParameters. Doc from javax.crypto.CipherSpi.engineGetParameters. Returns the parameters used with this cipher. The returned parameters may be the same that were used to initialize this cipher, or may contain additional default or random parameter values used by the underlying cipher implementation. If the required parameters were not supplied and can be generated by the cipher, the generated parameters are returned. Otherwise, `null` is returned. Returns:AlgorithmParameters the parameters used with this cipher, or `null` Annotations @Override

protected AlgorithmParameters engineGetParameters()

Implements abstract javax.crypto.CipherSpi.engineGetParameters.

Doc from javax.crypto.CipherSpi.engineGetParameters.

Returns the parameters used with this cipher.

The returned parameters may be the same that were used to initialize this cipher, or may contain additional default or random parameter values used by the underlying cipher implementation. If the required parameters were not supplied and can be generated by the cipher, the generated parameters are returned. Otherwise, null is returned.

Returns:AlgorithmParameters

the parameters used with this cipher, or null

Annotations

@Override

engineInit back to summary

engineInit	back to summary
protected void engineInit(int opmode, Key key, SecureRandom random) throws InvalidKeyException Implements abstract javax.crypto.CipherSpi.engineInit. Doc from javax.crypto.CipherSpi.engineInit. Initializes this `CipherSpi` object with a key and a source of randomness. The `CipherSpi` object is initialized for one of the following four operations: encryption, decryption, key wrapping or key unwrapping, depending on the value of `opmode`. If this cipher requires any algorithm parameters that cannot be derived from the given `key`, the underlying cipher implementation is supposed to generate the required parameters itself (using provider-specific default or random values) if it is being initialized for encryption or key wrapping, and raise an `InvalidKeyException` if it is being initialized for decryption or key unwrapping. The generated parameters can be retrieved using `engineGetParameters` or `engineGetIV` (if the parameter is an IV). If this cipher requires algorithm parameters that cannot be derived from the input parameters, and there are no reasonable provider-specific default values, initialization will necessarily fail. If this cipher (including its feedback or padding scheme) requires any random bytes (e.g., for parameter generation), it will get them from `random`. Note that when a `CipherSpi` object is initialized, it loses all previously-acquired state. In other words, initializing a `CipherSpi` object is equivalent to creating a new instance of that `CipherSpi` object and initializing it. Parameters opmode:int the operation mode of this `CipherSpi` object (this is one of the following: `ENCRYPT_MODE`, `DECRYPT_MODE`, `WRAP_MODE` or `UNWRAP_MODE`) key:Key the encryption key random:SecureRandom the source of randomness Annotations @Override Exceptions InvalidKeyException: if the given key is inappropriate for initializing this cipher, or requires algorithm parameters that cannot be determined from the given key

protected void engineInit(int opmode, Key key, SecureRandom random) throws InvalidKeyException

Implements abstract javax.crypto.CipherSpi.engineInit.

Doc from javax.crypto.CipherSpi.engineInit.

Initializes this CipherSpi object with a key and a source of randomness.

The CipherSpi object is initialized for one of the following four operations: encryption, decryption, key wrapping or key unwrapping, depending on the value of opmode.

If this cipher requires any algorithm parameters that cannot be derived from the given key, the underlying cipher implementation is supposed to generate the required parameters itself (using provider-specific default or random values) if it is being initialized for encryption or key wrapping, and raise an InvalidKeyException if it is being initialized for decryption or key unwrapping. The generated parameters can be retrieved using engineGetParameters or engineGetIV (if the parameter is an IV).

If this cipher requires algorithm parameters that cannot be derived from the input parameters, and there are no reasonable provider-specific default values, initialization will necessarily fail.

If this cipher (including its feedback or padding scheme) requires any random bytes (e.g., for parameter generation), it will get them from random.

Note that when a CipherSpi object is initialized, it loses all previously-acquired state. In other words, initializing a CipherSpi object is equivalent to creating a new instance of that CipherSpi object and initializing it.

Parameters

opmode:int: the operation mode of this CipherSpi object (this is one of the following: ENCRYPT_MODE, DECRYPT_MODE, WRAP_MODE or UNWRAP_MODE)
key:Key: the encryption key
random:SecureRandom: the source of randomness

Annotations

@Override

Exceptions

InvalidKeyException:: if the given key is inappropriate for initializing this cipher, or requires algorithm parameters that cannot be determined from the given key

engineInit back to summary

engineInit	back to summary
protected void engineInit(int opmode, Key key, AlgorithmParameterSpec params, SecureRandom random) throws InvalidKeyException, InvalidAlgorithmParameterException Implements abstract javax.crypto.CipherSpi.engineInit. Doc from javax.crypto.CipherSpi.engineInit. Initializes this `CipherSpi` object with a key, a set of algorithm parameters, and a source of randomness. The `CipherSpi` object is initialized for one of the following four operations: encryption, decryption, key wrapping or key unwrapping, depending on the value of `opmode`. If this cipher requires any algorithm parameters and `params` is `null`, the underlying cipher implementation is supposed to generate the required parameters itself (using provider-specific default or random values) if it is being initialized for encryption or key wrapping, and raise an `InvalidAlgorithmParameterException` if it is being initialized for decryption or key unwrapping. The generated parameters can be retrieved using `engineGetParameters` or `engineGetIV` (if the parameter is an IV). If this cipher requires algorithm parameters that cannot be derived from the input parameters, and there are no reasonable provider-specific default values, initialization will necessarily fail. If this cipher (including its feedback or padding scheme) requires any random bytes (e.g., for parameter generation), it will get them from `random`. Note that when a `CipherSpi` object is initialized, it loses all previously-acquired state. In other words, initializing a `CipherSpi` object is equivalent to creating a new instance of that `CipherSpi` object and initializing it. Parameters opmode:int the operation mode of this `CipherSpi` object (this is one of the following: `ENCRYPT_MODE`, `DECRYPT_MODE`, `WRAP_MODE`, or `UNWRAP_MODE`) key:Key the encryption key params:AlgorithmParameterSpec the algorithm parameters random:SecureRandom the source of randomness Annotations @Override Exceptions InvalidKeyException: if the given key is inappropriate for initializing this cipher InvalidAlgorithmParameterException: if the given algorithm parameters are inappropriate for this cipher, or if this cipher requires algorithm parameters and `params` is `null`

protected void engineInit(int opmode, Key key, AlgorithmParameterSpec params, SecureRandom random) throws InvalidKeyException, InvalidAlgorithmParameterException

Implements abstract javax.crypto.CipherSpi.engineInit.

Doc from javax.crypto.CipherSpi.engineInit.

Initializes this CipherSpi object with a key, a set of algorithm parameters, and a source of randomness.

The CipherSpi object is initialized for one of the following four operations: encryption, decryption, key wrapping or key unwrapping, depending on the value of opmode.

If this cipher requires any algorithm parameters and params is null, the underlying cipher implementation is supposed to generate the required parameters itself (using provider-specific default or random values) if it is being initialized for encryption or key wrapping, and raise an InvalidAlgorithmParameterException if it is being initialized for decryption or key unwrapping. The generated parameters can be retrieved using engineGetParameters or engineGetIV (if the parameter is an IV).

If this cipher requires algorithm parameters that cannot be derived from the input parameters, and there are no reasonable provider-specific default values, initialization will necessarily fail.

If this cipher (including its feedback or padding scheme) requires any random bytes (e.g., for parameter generation), it will get them from random.

Parameters

opmode:int: the operation mode of this CipherSpi object (this is one of the following: ENCRYPT_MODE, DECRYPT_MODE, WRAP_MODE, or UNWRAP_MODE)
key:Key: the encryption key
params:AlgorithmParameterSpec: the algorithm parameters
random:SecureRandom: the source of randomness

Annotations

@Override

Exceptions

InvalidKeyException:: if the given key is inappropriate for initializing this cipher
InvalidAlgorithmParameterException:: if the given algorithm parameters are inappropriate for this cipher, or if this cipher requires algorithm parameters and params is null

engineInit back to summary

engineInit	back to summary
protected void engineInit(int opmode, Key key, AlgorithmParameters params, SecureRandom random) throws InvalidKeyException, InvalidAlgorithmParameterException Implements abstract javax.crypto.CipherSpi.engineInit. Doc from javax.crypto.CipherSpi.engineInit. Initializes this `CipherSpi` object with a key, a set of algorithm parameters, and a source of randomness. The `CipherSpi` object is initialized for one of the following four operations: encryption, decryption, key wrapping or key unwrapping, depending on the value of `opmode`. If this cipher requires any algorithm parameters and `params` is `null`, the underlying cipher implementation is supposed to generate the required parameters itself (using provider-specific default or random values) if it is being initialized for encryption or key wrapping, and raise an `InvalidAlgorithmParameterException` if it is being initialized for decryption or key unwrapping. The generated parameters can be retrieved using `engineGetParameters` or `engineGetIV` (if the parameter is an IV). If this cipher requires algorithm parameters that cannot be derived from the input parameters, and there are no reasonable provider-specific default values, initialization will necessarily fail. If this cipher (including its feedback or padding scheme) requires any random bytes (e.g., for parameter generation), it will get them from `random`. Note that when a `CipherSpi` object is initialized, it loses all previously-acquired state. In other words, initializing a `CipherSpi` object is equivalent to creating a new instance of that `CipherSpi` object and initializing it. Parameters opmode:int the operation mode of this `CipherSpi` object (this is one of the following: `ENCRYPT_MODE`, `DECRYPT_MODE`, `WRAP_MODE`, or `UNWRAP_MODE`) key:Key the encryption key params:AlgorithmParameters the algorithm parameters random:SecureRandom the source of randomness Annotations @Override Exceptions InvalidKeyException: if the given key is inappropriate for initializing this cipher InvalidAlgorithmParameterException: if the given algorithm parameters are inappropriate for this cipher, or if this cipher requires algorithm parameters and `params` is null

protected void engineInit(int opmode, Key key, AlgorithmParameters params, SecureRandom random) throws InvalidKeyException, InvalidAlgorithmParameterException

Implements abstract javax.crypto.CipherSpi.engineInit.

Doc from javax.crypto.CipherSpi.engineInit.

Initializes this CipherSpi object with a key, a set of algorithm parameters, and a source of randomness.

The CipherSpi object is initialized for one of the following four operations: encryption, decryption, key wrapping or key unwrapping, depending on the value of opmode.

If this cipher requires algorithm parameters that cannot be derived from the input parameters, and there are no reasonable provider-specific default values, initialization will necessarily fail.

If this cipher (including its feedback or padding scheme) requires any random bytes (e.g., for parameter generation), it will get them from random.

Parameters

opmode:int: the operation mode of this CipherSpi object (this is one of the following: ENCRYPT_MODE, DECRYPT_MODE, WRAP_MODE, or UNWRAP_MODE)
key:Key: the encryption key
params:AlgorithmParameters: the algorithm parameters
random:SecureRandom: the source of randomness

Annotations

@Override

Exceptions

InvalidKeyException:: if the given key is inappropriate for initializing this cipher
InvalidAlgorithmParameterException:: if the given algorithm parameters are inappropriate for this cipher, or if this cipher requires algorithm parameters and params is null

engineSetMode	back to summary
protected void engineSetMode(String mode) throws NoSuchAlgorithmException Implements abstract javax.crypto.CipherSpi.engineSetMode. Doc from javax.crypto.CipherSpi.engineSetMode. Sets the mode of this cipher. Parameters mode:String the cipher mode Annotations @Override Exceptions NoSuchAlgorithmException: if the requested cipher mode does not exist

engineSetMode

back to summary

protected void engineSetMode(String mode) throws NoSuchAlgorithmException

Implements abstract javax.crypto.CipherSpi.engineSetMode.

Doc from javax.crypto.CipherSpi.engineSetMode.

Sets the mode of this cipher.

Parameters

mode:String: the cipher mode

Annotations

@Override

Exceptions

NoSuchAlgorithmException:: if the requested cipher mode does not exist

engineSetPadding	back to summary
protected void engineSetPadding(String padding) throws NoSuchPaddingException Implements abstract javax.crypto.CipherSpi.engineSetPadding. Doc from javax.crypto.CipherSpi.engineSetPadding. Sets the padding mechanism of this cipher. Parameters padding:String the padding mechanism Annotations @Override Exceptions NoSuchPaddingException: if the requested padding mechanism does not exist

engineSetPadding

back to summary

protected void engineSetPadding(String padding) throws NoSuchPaddingException

Implements abstract javax.crypto.CipherSpi.engineSetPadding.

Doc from javax.crypto.CipherSpi.engineSetPadding.

Sets the padding mechanism of this cipher.

Parameters

padding:String: the padding mechanism

Annotations

@Override

Exceptions

NoSuchPaddingException:: if the requested padding mechanism does not exist

engineUpdate back to summary

engineUpdate	back to summary
protected byte[] engineUpdate(byte[] input, int inputOffset, int inputLen) Implements abstract javax.crypto.CipherSpi.engineUpdate. Doc from javax.crypto.CipherSpi.engineUpdate. Continues a multiple-part encryption or decryption operation (depending on how this `CipherSpi` object was initialized), processing another data part. The first `inputLen` bytes in the `input` buffer, starting at `inputOffset` inclusive, are processed, and the result is stored in a new buffer. Parameters input:byte[] the input buffer inputOffset:int the offset in `input` where the input starts inputLen:int the input length Returns:byte[] the new buffer with the result, or `null` if the cipher is a block cipher and the input data is too short to result in a new block Annotations @Override

protected byte[] engineUpdate(byte[] input, int inputOffset, int inputLen)

Implements abstract javax.crypto.CipherSpi.engineUpdate.

Doc from javax.crypto.CipherSpi.engineUpdate.

Continues a multiple-part encryption or decryption operation (depending on how this CipherSpi object was initialized), processing another data part.

The first inputLen bytes in the input buffer, starting at inputOffset inclusive, are processed, and the result is stored in a new buffer.

Parameters

input:byte[]: the input buffer
inputOffset:int: the offset in input where the input starts
inputLen:int: the input length

Returns:byte[]

the new buffer with the result, or null if the cipher is a block cipher and the input data is too short to result in a new block

Annotations

@Override

engineUpdate back to summary

engineUpdate	back to summary
protected int engineUpdate(byte[] input, int inputOffset, int inputLen, byte[] output, int outputOffset) throws ShortBufferException Implements abstract javax.crypto.CipherSpi.engineUpdate. Doc from javax.crypto.CipherSpi.engineUpdate. Continues a multiple-part encryption or decryption operation (depending on how this `CipherSpi` object was initialized), processing another data part. The first `inputLen` bytes in the `input` buffer, starting at `inputOffset` inclusive, are processed, and the result is stored in the `output` buffer, starting at `outputOffset` inclusive. If the `output` buffer is too small to hold the result, a `ShortBufferException` is thrown. Parameters input:byte[] the input buffer inputOffset:int the offset in `input` where the input starts inputLen:int the input length output:byte[] the buffer for the result outputOffset:int the offset in `output` where the result is stored Returns:int the number of bytes stored in `output` Annotations @Override Exceptions ShortBufferException: if the given output buffer is too small to hold the result

protected int engineUpdate(byte[] input, int inputOffset, int inputLen, byte[] output, int outputOffset) throws ShortBufferException

Implements abstract javax.crypto.CipherSpi.engineUpdate.

Doc from javax.crypto.CipherSpi.engineUpdate.

Continues a multiple-part encryption or decryption operation (depending on how this CipherSpi object was initialized), processing another data part.

The first inputLen bytes in the input buffer, starting at inputOffset inclusive, are processed, and the result is stored in the output buffer, starting at outputOffset inclusive.

If the output buffer is too small to hold the result, a ShortBufferException is thrown.

Parameters

input:byte[]: the input buffer
inputOffset:int: the offset in input where the input starts
inputLen:int: the input length
output:byte[]: the buffer for the result
outputOffset:int: the offset in output where the result is stored

Returns:int

the number of bytes stored in output

Annotations

@Override

Exceptions

ShortBufferException:: if the given output buffer is too small to hold the result

pack-priv final Class P11PBECipher

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