OpenJDK 27 · com.sun.crypto.provider.BlowfishCipher · APIdia, the JavaDoc alternative

Modifier and Type	Field and Description
private final CipherCore	core

Access	Constructor and Description
public	BlowfishCipher() Creates an instance of Blowfish cipher with default ECB mode and PKCS5Padding.

Method Summary

Modifier and Type	Method and Description
protected byte[]	Returns: the new buffer with the result 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	Returns: the number of bytes stored in `output` 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	Returns: the block size (in bytes), or 0 if the underlying algorithm is not a block cipher engineGetBlockSize() Implements abstract javax.crypto.CipherSpi.engineGetBlockSize. Returns the block size (in bytes).
protected byte[]	Returns: the initialization vector in a new buffer, or null if the underlying algorithm does not use an IV, or if the IV has not yet been set. engineGetIV() Implements abstract javax.crypto.CipherSpi.engineGetIV. Returns the initialization vector (IV) in a new buffer.
protected int	Returns: the key size of the given key object. engineGetKeySize(Key the key object. key) Overrides javax.crypto.CipherSpi.engineGetKeySize. Returns the key size of the given key object.
protected int	Returns: the required output buffer size (in bytes) 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	Returns: the parameters used with this cipher, or null if this cipher does not use any parameters. engineGetParameters() Implements abstract javax.crypto.CipherSpi.engineGetParameters. Returns the parameters used with this cipher.
protected void	engineInit(int the operation mode of this cipher (this is one of the following: `ENCRYPT_MODE`, `DECRYPT_MODE`, `WRAP_MODE` or `UNWRAP_MODE`) opmode, Key the secret key key, SecureRandom the source of randomness random) Implements abstract javax.crypto.CipherSpi.engineInit. Initializes this cipher with a key and a source of randomness.
protected void	engineInit(int the operation mode of this cipher (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 cipher with a key, a set of algorithm parameters, and a source of randomness.
protected void	engineInit(int opmode, Key key, AlgorithmParameters params, SecureRandom 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 paddingScheme) Implements abstract javax.crypto.CipherSpi.engineSetPadding. Sets the padding mechanism of this cipher.
protected Key	Returns: the unwrapped key. engineUnwrap(byte[] the key to be unwrapped. wrappedKey, String the algorithm the wrapped key is for. wrappedKeyAlgorithm, int the type of the wrapped key. This is one of `Cipher.SECRET_KEY`, `Cipher.PRIVATE_KEY`, or `Cipher.PUBLIC_KEY`. wrappedKeyType) Overrides javax.crypto.CipherSpi.engineUnwrap. Unwrap a previously wrapped key.
protected byte[]	Returns: the new buffer with the result 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 cipher was initialized), processing another data part.
protected int	Returns: the number of bytes stored in `output` 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 cipher was initialized), processing another data part.
protected byte[]	Returns: the wrapped key. engineWrap(Key the key to be wrapped. key) Overrides javax.crypto.CipherSpi.engineWrap. Wrap a key.

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

core	back to summary
private final CipherCore core

BlowfishCipher	back to summary
public BlowfishCipher() Creates an instance of Blowfish cipher with default ECB mode and PKCS5Padding.

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. 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 cipher was initialized. The first `inputLen` bytes in the `input` buffer, starting at `inputOffset`, and any input bytes that may have been buffered during a previous `update` operation, are processed, with padding (if requested) being applied. The result is stored in a new buffer. The cipher is reset to its initial state (uninitialized) after this call. 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 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 BadPaddingException: if this cipher 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.

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 cipher was initialized.

The first inputLen bytes in the input buffer, starting at inputOffset, and any input bytes that may have been buffered during a previous update operation, are processed, with padding (if requested) being applied. The result is stored in a new buffer.

The cipher is reset to its initial state (uninitialized) after this call.

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

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
BadPaddingException:: if this cipher 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 IllegalBlockSizeException, ShortBufferException, BadPaddingException Implements abstract 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 cipher was initialized. The first `inputLen` bytes in the `input` buffer, starting at `inputOffset`, and any input bytes that may have been buffered during a previous `update` operation, are processed, with padding (if requested) being applied. The result is stored in the `output` buffer, starting at `outputOffset`. The cipher is reset to its initial state (uninitialized) after this call. 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` 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 ShortBufferException: if the given output buffer is too small to hold the result BadPaddingException: if this cipher 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 IllegalBlockSizeException, ShortBufferException, BadPaddingException

Implements abstract 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 cipher was initialized.

The cipher is reset to its initial state (uninitialized) after this call.

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

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
ShortBufferException:: if the given output buffer is too small to hold the result
BadPaddingException:: if this cipher 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. Returns the block size (in bytes). Returns:int the block size (in bytes), or 0 if the underlying algorithm is not a block cipher

engineGetBlockSize

back to summary

protected int engineGetBlockSize()

Implements abstract javax.crypto.CipherSpi.engineGetBlockSize.

Returns the block size (in bytes).

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

engineGetIV	back to summary
protected byte[] engineGetIV() Implements abstract javax.crypto.CipherSpi.engineGetIV. Returns the initialization vector (IV) in a new buffer. This is useful in the case where a random IV has been created (see init), or in the context of password-based encryption or decryption, where the IV is derived from a user-supplied password. Returns:byte[] the initialization vector in a new buffer, or null if the underlying algorithm does not use an IV, or if the IV has not yet been set.

engineGetIV

back to summary

protected byte[] engineGetIV()

Implements abstract javax.crypto.CipherSpi.engineGetIV.

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

This is useful in the case where a random IV has been created (see init), or in the context of password-based encryption or decryption, where the IV is derived from a user-supplied password.

Returns:byte[]: the initialization vector in a new buffer, or null if the underlying algorithm does not use an IV, or if the IV has not yet been set.

engineGetKeySize back to summary

engineGetKeySize	back to summary
protected int engineGetKeySize(Key key) throws InvalidKeyException Overrides javax.crypto.CipherSpi.engineGetKeySize. Returns the key size of the given key object. Parameters key:Key the key object. Returns:int the key size of the given key object. Exceptions InvalidKeyException: if `key` is invalid.

protected int engineGetKeySize(Key key) throws InvalidKeyException

Overrides javax.crypto.CipherSpi.engineGetKeySize.

Returns the key size of the given key object.

Parameters

key:Key: the key object.

Returns:int

the key size of the given key object.

Exceptions

InvalidKeyException:: if key is invalid.

engineGetOutputSize back to summary

engineGetOutputSize	back to summary
protected int engineGetOutputSize(int 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). This call takes into account any unprocessed (buffered) data from a previous `update` call, and padding. 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)

protected int engineGetOutputSize(int 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).

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

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)

engineGetParameters	back to summary
protected AlgorithmParameters engineGetParameters() Implements abstract 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 the default set of parameters or a set of randomly generated parameters used by the underlying cipher implementation (provided that the underlying cipher implementation uses a default set of parameters or creates new parameters if it needs parameters but was not initialized with any). Returns:AlgorithmParameters the parameters used with this cipher, or null if this cipher does not use any parameters.

engineGetParameters

back to summary

protected AlgorithmParameters engineGetParameters()

Implements abstract 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 the default set of parameters or a set of randomly generated parameters used by the underlying cipher implementation (provided that the underlying cipher implementation uses a default set of parameters or creates new parameters if it needs parameters but was not initialized with any).

Returns:AlgorithmParameters: the parameters used with this cipher, or null if this cipher does not use any parameters.

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. Initializes this cipher with a key and a source of randomness. The cipher 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 an initialization vector (IV), it will get it from `random`. This behaviour should only be used in encryption or key wrapping mode, however. When initializing a cipher that requires an IV for decryption or key unwrapping, the IV (same IV that was used for encryption or key wrapping) must be provided explicitly as a parameter, in order to get the correct result. This method also cleans existing buffer and other related state information. Parameters opmode:int the operation mode of this cipher (this is one of the following: `ENCRYPT_MODE`, `DECRYPT_MODE`, `WRAP_MODE` or `UNWRAP_MODE`) key:Key the secret key random:SecureRandom the source of randomness Exceptions InvalidKeyException: if the given key is inappropriate for initializing this cipher

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

Implements abstract javax.crypto.CipherSpi.engineInit.

Initializes this cipher with a key and a source of randomness.

The cipher 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 an initialization vector (IV), it will get it from random. This behaviour should only be used in encryption or key wrapping mode, however. When initializing a cipher that requires an IV for decryption or key unwrapping, the IV (same IV that was used for encryption or key wrapping) must be provided explicitly as a parameter, in order to get the correct result.

This method also cleans existing buffer and other related state information.

Parameters

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

Exceptions

InvalidKeyException:: if the given key is inappropriate for initializing this cipher

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. Initializes this cipher with a key, a set of algorithm parameters, and a source of randomness. The cipher 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 (including its underlying feedback or padding scheme) requires any random bytes, it will get them from `random`. Parameters opmode:int the operation mode of this cipher (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 Exceptions InvalidKeyException: if the given key is inappropriate for initializing this cipher InvalidAlgorithmParameterException: if the given algorithm parameters are inappropriate for this cipher

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

Implements abstract javax.crypto.CipherSpi.engineInit.

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

The cipher 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 (including its underlying feedback or padding scheme) requires any random bytes, it will get them from random.

Parameters

opmode:int: the operation mode of this cipher (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

Exceptions

InvalidKeyException:: if the given key is inappropriate for initializing this cipher
InvalidAlgorithmParameterException:: if the given algorithm parameters are inappropriate for this cipher

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. 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 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.

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. Sets the mode of this cipher. Parameters mode:String the cipher mode Exceptions NoSuchAlgorithmException: if the requested cipher mode does not exist

engineSetMode

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protected void engineSetMode(String mode) throws NoSuchAlgorithmException

Implements abstract javax.crypto.CipherSpi.engineSetMode.

Sets the mode of this cipher.

Parameters

mode:String: the cipher mode

Exceptions

NoSuchAlgorithmException:: if the requested cipher mode does not exist

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

engineSetPadding

back to summary

protected void engineSetPadding(String paddingScheme) throws NoSuchPaddingException

Implements abstract javax.crypto.CipherSpi.engineSetPadding.

Sets the padding mechanism of this cipher.

Parameters

paddingScheme:String: the padding mechanism

Exceptions

NoSuchPaddingException:: if the requested padding mechanism does not exist

engineUnwrap back to summary

engineUnwrap	back to summary
protected Key engineUnwrap(byte[] wrappedKey, String wrappedKeyAlgorithm, int wrappedKeyType) throws InvalidKeyException, NoSuchAlgorithmException Overrides javax.crypto.CipherSpi.engineUnwrap. Unwrap a previously wrapped key. Parameters wrappedKey:byte[] the key to be unwrapped. wrappedKeyAlgorithm:String the algorithm the wrapped key is for. wrappedKeyType:int the type of the wrapped key. This is one of `Cipher.SECRET_KEY`, `Cipher.PRIVATE_KEY`, or `Cipher.PUBLIC_KEY`. Returns:Key the unwrapped key. Exceptions InvalidKeyException: if `wrappedKey` does not represent a wrapped key of type `wrappedKeyType` for the `wrappedKeyAlgorithm`. NoSuchAlgorithmException: if no installed providers can create keys of type `wrappedKeyType` for the `wrappedKeyAlgorithm`.

protected Key engineUnwrap(byte[] wrappedKey, String wrappedKeyAlgorithm, int wrappedKeyType) throws InvalidKeyException, NoSuchAlgorithmException

Overrides javax.crypto.CipherSpi.engineUnwrap.

Unwrap a previously wrapped key.

Parameters

wrappedKey:byte[]: the key to be unwrapped.
wrappedKeyAlgorithm:String: the algorithm the wrapped key is for.
wrappedKeyType:int: the type of the wrapped key. This is one of Cipher.SECRET_KEY, Cipher.PRIVATE_KEY, or Cipher.PUBLIC_KEY.

Returns:Key

the unwrapped key.

Exceptions

InvalidKeyException:: if wrappedKey does not represent a wrapped key of type wrappedKeyType for the wrappedKeyAlgorithm.
NoSuchAlgorithmException:: if no installed providers can create keys of type wrappedKeyType for the wrappedKeyAlgorithm.

engineUpdate back to summary

engineUpdate	back to summary
protected byte[] engineUpdate(byte[] input, int inputOffset, int inputLen) Implements abstract javax.crypto.CipherSpi.engineUpdate. Continues a multiple-part encryption or decryption operation (depending on how this cipher was initialized), processing another data part. The first `inputLen` bytes in the `input` buffer, starting at `inputOffset`, 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 Exceptions IllegalStateException: if this cipher is in a wrong state (e.g., has not been initialized)

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

Implements abstract javax.crypto.CipherSpi.engineUpdate.

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

The first inputLen bytes in the input buffer, starting at inputOffset, 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

Exceptions

IllegalStateException:: if this cipher is in a wrong state (e.g., has not been initialized)

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. Continues a multiple-part encryption or decryption operation (depending on how this cipher was initialized), processing another data part. The first `inputLen` bytes in the `input` buffer, starting at `inputOffset`, are processed, and the result is stored in the `output` buffer, starting at `outputOffset`. 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` 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.

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

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

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

Exceptions

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

engineWrap	back to summary
protected byte[] engineWrap(Key key) throws IllegalBlockSizeException, InvalidKeyException Overrides javax.crypto.CipherSpi.engineWrap. Wrap a key. Parameters key:Key the key to be wrapped. Returns:byte[] the wrapped key. Exceptions IllegalBlockSizeException: if this cipher is a block cipher, no padding has been requested, and the length of the encoding of the key to be wrapped is not a multiple of the block size. InvalidKeyException: if it is impossible or unsafe to wrap the key with this cipher (e.g., a hardware protected key is being passed to a software only cipher).

engineWrap

back to summary

protected byte[] engineWrap(Key key) throws IllegalBlockSizeException, InvalidKeyException

Overrides javax.crypto.CipherSpi.engineWrap.

Wrap a key.

Parameters

key:Key: the key to be wrapped.

Returns:byte[]

the wrapped key.

Exceptions

IllegalBlockSizeException:: if this cipher is a block cipher, no padding has been requested, and the length of the encoding of the key to be wrapped is not a multiple of the block size.
InvalidKeyException:: if it is impossible or unsafe to wrap the key with this cipher (e.g., a hardware protected key is being passed to a software only cipher).

public final Class BlowfishCipher

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