Top Description Inners Fields Constructors Methods
sun.security.pkcs11

pack-priv final Class P11Cipher

extends CipherSpi
Class Inheritance
Imports
java.nio.ByteBuffer, java.util.Arrays, .Locale, java.security.*, java.security.spec.*, javax.crypto.*, javax.crypto.spec.*, jdk.internal.access.JavaNioAccess, .SharedSecrets, sun.nio.ch.DirectBuffer, sun.security.jca.JCAUtil, sun.security.pkcs11.wrapper.*
Cipher implementation class. This class currently supports DES, DESede, AES, ARCFOUR, and Blowfish. This class is designed to support ECB, CBC, CTR with NoPadding and ECB, CBC with PKCS5Padding. It will use its own padding impl if the native mechanism does not support padding. Note that PKCS#11 currently only supports ECB, CBC, and CTR. There are no provisions for other modes such as CFB, OFB, and PCBC.
Author
Andreas Sterbenz
Since
1.5

Nested and Inner Type Summary

Modifier and TypeClass and Description
private static interface
P11Cipher.Padding

private static class
P11Cipher.PKCS5Padding

Field Summary

Modifier and TypeField and Description
private final String
algorithm

private int
blockMode

private final int
blockSize

private int
bytesBuffered

private boolean
encrypt

private int
fixedKeySize

private boolean
initialized

private byte[]
iv

private final String
keyAlgorithm

private final long
mechanism

private static final int
MODE_CBC

private static final int
MODE_CTR

private static final int
MODE_ECB

private static final JavaNioAccess
NIO_ACCESS

private P11Key
p11Key

private static final int
PAD_NONE

private static final int
PAD_PKCS5

private byte[]
padBuffer

private int
padBufferLen

private P11Cipher.Padding
paddingObj

private int
paddingType

private boolean
reqBlockUpdates

private Session
session

private final Token
token

Constructor Summary

AccessConstructor and Description
pack-priv
P11Cipher(Token token, String algorithm, long mechanism)

Method Summary

Modifier and TypeMethod and Description
private final void
bufferInputBytes(byte[] in, int inOfs, int len)

private final void
bufferInputBytes(ByteBuffer inBuffer, int len)

private void
cancelOperation()

private int
doFinalLength(int inLen)

protected byte[]
engineDoFinal(byte[]
the input buffer
in, int
the offset in input where the input starts
inOfs, int
the input length
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[]
the input buffer
in, int
the offset in input where the input starts
inOfs, int
the input length
inLen, byte[]
the buffer for the result
out, int
the offset in output where the result is stored
outOfs)

Implements abstract javax.crypto.CipherSpi.engineDoFinal.

Encrypts or decrypts data in a single-part operation, or finishes a multiple-part operation.

protected int
engineDoFinal(ByteBuffer
the input ByteBuffer
inBuffer, ByteBuffer
the output ByteBuffer
outBuffer)

Overrides 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 Key
engineUnwrap(byte[]
the key to be unwrapped
wrappedKey, String
the algorithm associated with the wrapped key
wrappedKeyAlgorithm, int
the type of the wrapped key. This is one of SECRET_KEY, PRIVATE_KEY, or PUBLIC_KEY.
wrappedKeyType)

Overrides javax.crypto.CipherSpi.engineUnwrap.

Unwrap a previously wrapped key.

protected byte[]
engineUpdate(byte[]
the input buffer
in, int
the offset in input where the input starts
inOfs, int
the input length
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[]
the input buffer
in, int
the offset in input where the input starts
inOfs, int
the input length
inLen, byte[]
the buffer for the result
out, int
the offset in output where the result is stored
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 int
engineUpdate(ByteBuffer
the input ByteBuffer
inBuffer, ByteBuffer
the output ByteBuffer
outBuffer)

Overrides 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
the key to be wrapped
key)

Overrides javax.crypto.CipherSpi.engineWrap.

Wrap a key.

private void
ensureInitialized()

private void
handleException(PKCS11Exception e)

private int
implDoFinal(byte[] out, int outOfs, int outLen)

private int
implDoFinal(ByteBuffer outBuffer)

private void
implInit(int opmode, Key key, byte[] iv, SecureRandom random)

private int
implUpdate(byte[] in, int inOfs, int inLen, byte[] out, int outOfs, int outLen)

private int
implUpdate(ByteBuffer inBuffer, ByteBuffer outBuffer)

private void
initialize()

private int
parseMode(String mode)

private void
reset(boolean doCancel)

private int
updateLength(int inLen)

Inherited from javax.crypto.CipherSpi:
engineUpdateAADengineUpdateAAD

Field Detail

algorithmback to summary
private final String algorithm
blockModeback to summary
private int blockMode
blockSizeback to summary
private final int blockSize
bytesBufferedback to summary
private int bytesBuffered
encryptback to summary
private boolean encrypt
fixedKeySizeback to summary
private int fixedKeySize
initializedback to summary
private boolean initialized
ivback to summary
private byte[] iv
keyAlgorithmback to summary
private final String keyAlgorithm
mechanismback to summary
private final long mechanism
MODE_CBCback to summary
private static final int MODE_CBC
MODE_CTRback to summary
private static final int MODE_CTR
MODE_ECBback to summary
private static final int MODE_ECB
NIO_ACCESSback to summary
private static final JavaNioAccess NIO_ACCESS
p11Keyback to summary
private P11Key p11Key
PAD_NONEback to summary
private static final int PAD_NONE
PAD_PKCS5back to summary
private static final int PAD_PKCS5
padBufferback to summary
private byte[] padBuffer
padBufferLenback to summary
private int padBufferLen
paddingObjback to summary
private P11Cipher.Padding paddingObj
paddingTypeback to summary
private int paddingType
reqBlockUpdatesback to summary
private boolean reqBlockUpdates
sessionback to summary
private Session session
tokenback to summary
private final Token token

Constructor Detail

P11Cipherback to summary
pack-priv P11Cipher(Token token, String algorithm, long mechanism) throws PKCS11Exception, NoSuchAlgorithmException

Method Detail

bufferInputBytesback to summary
private final void bufferInputBytes(byte[] in, int inOfs, int len)
bufferInputBytesback to summary
private final void bufferInputBytes(ByteBuffer inBuffer, int len)
cancelOperationback to summary
private void cancelOperation()
doFinalLengthback to summary
private int doFinalLength(int inLen)
engineDoFinalback 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.

Parameters
in:byte[]

the input buffer

inOfs:int

the offset in input where the input starts

inLen: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; 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
engineDoFinalback to summary
protected int engineDoFinal(byte[] in, int inOfs, int inLen, byte[] out, int outOfs) 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
in:byte[]

the input buffer

inOfs:int

the offset in input where the input starts

inLen:int

the input length

out:byte[]

the buffer for the result

outOfs: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
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
engineDoFinalback to summary
protected int engineDoFinal(ByteBuffer inBuffer, ByteBuffer outBuffer) throws ShortBufferException, IllegalBlockSizeException, BadPaddingException

Overrides 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.

All input.remaining() bytes starting at input.position() are processed. 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. Upon return, the input buffer's position will be equal to its limit; its limit will not have changed. The output buffer's position will have advanced by n, where n is the value returned by this method; the output buffer's limit will not have changed.

If output.remaining() bytes are insufficient 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.

Subclasses should consider overriding this method if they can process ByteBuffers more efficiently than byte arrays.

Parameters
inBuffer:ByteBuffer

the input ByteBuffer

outBuffer:ByteBuffer

the output ByteBuffer

Returns:int

the number of bytes stored in output

Annotations
@Override
Exceptions
ShortBufferException:
if there is insufficient space in the output buffer
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
engineGetBlockSizeback 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

engineGetIVback 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

engineGetKeySizeback 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.

Parameters
key:Key

the key object

Returns:int

the key size of the given key object

Annotations
@Override
Exceptions
InvalidKeyException:
if key is invalid
engineGetOutputSizeback 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)

engineGetParametersback 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

engineInitback 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

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

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
engineInitback 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

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
engineSetModeback 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

Exceptions
NoSuchAlgorithmException:
if the requested cipher mode does not exist
engineSetPaddingback 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

Exceptions
NoSuchPaddingException:
if the requested padding mechanism does not exist
engineUnwrapback 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.

Parameters
wrappedKey:byte[]

the key to be unwrapped

wrappedKeyAlgorithm:String

the algorithm associated with the wrapped key

wrappedKeyType:int

the type of the wrapped key. This is one of SECRET_KEY, PRIVATE_KEY, or 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
engineUpdateback 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.

Parameters
in:byte[]

the input buffer

inOfs:int

the offset in input where the input starts

inLen: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

engineUpdateback 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.

Parameters
in:byte[]

the input buffer

inOfs:int

the offset in input where the input starts

inLen:int

the input length

out:byte[]

the buffer for the result

outOfs: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
engineUpdateback to summary
protected int engineUpdate(ByteBuffer inBuffer, ByteBuffer outBuffer) throws ShortBufferException

Overrides 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.

All input.remaining() bytes starting at input.position() are processed. The result is stored in the output buffer. Upon return, the input buffer's position will be equal to its limit; its limit will not have changed. The output buffer's position will have advanced by n, where n is the value returned by this method; the output buffer's limit will not have changed.

If output.remaining() bytes are insufficient to hold the result, a ShortBufferException is thrown.

Subclasses should consider overriding this method if they can process ByteBuffers more efficiently than byte arrays.

Parameters
inBuffer:ByteBuffer

the input ByteBuffer

outBuffer:ByteBuffer

the output ByteBuffer

Returns:int

the number of bytes stored in output

Annotations
@Override
Exceptions
ShortBufferException:
if there is insufficient space in the output buffer
engineWrapback 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.

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)
ensureInitializedback to summary
private void ensureInitialized() throws PKCS11Exception
handleExceptionback to summary
private void handleException(PKCS11Exception e) throws ShortBufferException, IllegalBlockSizeException
implDoFinalback to summary
private int implDoFinal(byte[] out, int outOfs, int outLen) throws ShortBufferException, IllegalBlockSizeException, BadPaddingException
implDoFinalback to summary
private int implDoFinal(ByteBuffer outBuffer) throws ShortBufferException, IllegalBlockSizeException, BadPaddingException
implInitback to summary
private void implInit(int opmode, Key key, byte[] iv, SecureRandom random) throws InvalidKeyException, InvalidAlgorithmParameterException
implUpdateback to summary
private int implUpdate(byte[] in, int inOfs, int inLen, byte[] out, int outOfs, int outLen) throws ShortBufferException
implUpdateback to summary
private int implUpdate(ByteBuffer inBuffer, ByteBuffer outBuffer) throws ShortBufferException
initializeback to summary
private void initialize() throws PKCS11Exception
parseModeback to summary
private int parseMode(String mode) throws NoSuchAlgorithmException
resetback to summary
private void reset(boolean doCancel)
updateLengthback to summary
private int updateLength(int inLen)
sun.security.pkcs11 back to summary

private Interface P11Cipher.Padding

Known Direct Implementers
sun.security.pkcs11.P11Cipher.PKCS5Padding

Method Summary

Modifier and TypeMethod and Description
public int
setPaddingBytes(byte[] paddingBuffer, int startOff, int padLen)

public int
unpad(byte[] paddedData, int len)

Method Detail

setPaddingBytesback to summary
public int setPaddingBytes(byte[] paddingBuffer, int startOff, int padLen)
unpadback to summary
public int unpad(byte[] paddedData, int len) throws BadPaddingException, IllegalBlockSizeException
sun.security.pkcs11 back to summary

private Class P11Cipher.PKCS5Padding

extends Object
implements Padding
Class Inheritance
All Implemented Interfaces
sun.security.pkcs11.P11Cipher.Padding

Field Summary

Modifier and TypeField and Description
private final int
blockSize

Constructor Summary

AccessConstructor and Description
pack-priv
PKCS5Padding(int blockSize)

Method Summary

Modifier and TypeMethod and Description
public int
setPaddingBytes(byte[] paddingBuffer, int startOff, int padLen)

Implements sun.security.pkcs11.P11Cipher.Padding.setPaddingBytes.

public int
unpad(byte[] paddedData, int len)

Implements sun.security.pkcs11.P11Cipher.Padding.unpad.

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

blockSizeback to summary
private final int blockSize

Constructor Detail

PKCS5Paddingback to summary
pack-priv PKCS5Padding(int blockSize) throws NoSuchPaddingException

Method Detail

setPaddingBytesback to summary
public int setPaddingBytes(byte[] paddingBuffer, int startOff, int padLen)

Implements sun.security.pkcs11.P11Cipher.Padding.setPaddingBytes.

unpadback to summary
public int unpad(byte[] paddedData, int len) throws BadPaddingException, IllegalBlockSizeException

Implements sun.security.pkcs11.P11Cipher.Padding.unpad.