OpenJDK 27 · com.sun.crypto.provider.RC2Cipher · APIdia, the JavaDoc alternative

Modifier and Type	Field and Description
private final CipherCore	core
private final RC2Crypt	embeddedCipher

Access	Constructor and Description
public	RC2Cipher()

Modifier and Type	Method and Description
protected byte[]	engineDoFinal(byte[] in, int inOfs, int inLen) 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[] in, int inOfs, int inLen, byte[] out, int outOfs) 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 key) Overrides javax.crypto.CipherSpi.engineGetKeySize. Returns the key size of the given key object in bits.
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).
protected AlgorithmParameters	engineGetParameters() Implements abstract javax.crypto.CipherSpi.engineGetParameters. Returns the parameters used with this cipher.
protected void	engineInit(int opmode, Key key, SecureRandom random) Implements abstract javax.crypto.CipherSpi.engineInit. Initializes this `CipherSpi` object with a key and a source of randomness.
protected void	engineInit(int opmode, Key key, AlgorithmParameterSpec 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	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 mode) Implements abstract javax.crypto.CipherSpi.engineSetMode. Sets the mode of this cipher.
protected void	engineSetPadding(String paddingScheme) Implements abstract javax.crypto.CipherSpi.engineSetPadding. Sets the padding mechanism of this cipher.
protected Key	engineUnwrap(byte[] wrappedKey, String wrappedKeyAlgorithm, int wrappedKeyType) Overrides javax.crypto.CipherSpi.engineUnwrap. Unwrap a previously wrapped key.
protected byte[]	engineUpdate(byte[] in, int inOfs, int inLen) 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[] in, int inOfs, int inLen, byte[] out, int outOfs) 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 byte[]	engineWrap(Key key) Overrides javax.crypto.CipherSpi.engineWrap. Wrap a key.

core	back to summary
private final CipherCore core

embeddedCipher	back to summary
private final RC2Crypt embeddedCipher

RC2Cipher	back to summary
public RC2Cipher()

Method Detail

engineDoFinal back to summary

engineDoFinal	back to summary
protected byte[] engineDoFinal(byte[] in, int inOfs, int inLen) 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. 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[] in, int inOfs, int inLen) 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.

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[] in, int inOfs, int inLen, byte[] out, int outOfs) throws IllegalBlockSizeException, ShortBufferException, 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. 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 ShortBufferException: if the given output buffer is too small to hold the result 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[] in, int inOfs, int inLen, byte[] out, int outOfs) throws IllegalBlockSizeException, ShortBufferException, 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.

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

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).

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.

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.

engineGetKeySize back to summary

engineGetKeySize	back to summary
protected int engineGetKeySize(Key key) throws InvalidKeyException 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. Exceptions InvalidKeyException: if `key` is invalid

protected int engineGetKeySize(Key key) throws InvalidKeyException

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.

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. 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.

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.

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.

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.

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. 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.

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. 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.

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. 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.

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. 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.

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. Doc from javax.crypto.CipherSpi.engineSetPadding. Sets the padding mechanism of this cipher. 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.

Doc from javax.crypto.CipherSpi.engineSetPadding.

Sets the padding mechanism of this cipher.

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. Doc from javax.crypto.CipherSpi.engineUnwrap. Unwrap a previously wrapped key. This concrete method has been added to this previously-defined abstract class. (For backwards compatibility, it cannot be abstract.) It may be overridden by a provider to unwrap a previously wrapped key. Such an override is expected to throw an `InvalidKeyException` if the given wrapped key cannot be unwrapped. If this method is not overridden, it always throws an `UnsupportedOperationException`. 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.

Doc from javax.crypto.CipherSpi.engineUnwrap.

Unwrap a previously wrapped key.

This concrete method has been added to this previously-defined abstract class. (For backwards compatibility, it cannot be abstract.) It may be overridden by a provider to unwrap a previously wrapped key. Such an override is expected to throw an InvalidKeyException if the given wrapped key cannot be unwrapped. If this method is not overridden, it always throws an UnsupportedOperationException.

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[] in, int inOfs, int inLen) 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.

protected byte[] engineUpdate(byte[] in, int inOfs, int inLen)

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.

engineUpdate back to summary

engineUpdate	back to summary
protected int engineUpdate(byte[] in, int inOfs, int inLen, byte[] out, int outOfs) 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. Exceptions ShortBufferException: if the given output buffer is too small to hold the result

protected int engineUpdate(byte[] in, int inOfs, int inLen, byte[] out, int outOfs) 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.

Exceptions

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

engineWrap back to summary

engineWrap	back to summary
protected byte[] engineWrap(Key key) throws IllegalBlockSizeException, InvalidKeyException Overrides javax.crypto.CipherSpi.engineWrap. Doc from javax.crypto.CipherSpi.engineWrap. Wrap a key. This concrete method has been added to this previously-defined abstract class. (For backwards compatibility, it cannot be abstract.) It may be overridden by a provider to wrap a key. Such an override is expected to throw an `IllegalBlockSizeException` or `InvalidKeyException` (under the specified circumstances), if the given key cannot be wrapped. If this method is not overridden, it always throws an `UnsupportedOperationException`. 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)

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

Overrides javax.crypto.CipherSpi.engineWrap.

Doc from javax.crypto.CipherSpi.engineWrap.

Wrap a key.

This concrete method has been added to this previously-defined abstract class. (For backwards compatibility, it cannot be abstract.) It may be overridden by a provider to wrap a key. Such an override is expected to throw an IllegalBlockSizeException or InvalidKeyException (under the specified circumstances), if the given key cannot be wrapped. If this method is not overridden, it always throws an UnsupportedOperationException.

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 sealed Class RC2Cipher

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