Package com.fortanix.sdkms.jce.provider.ciphers

Class CipherCore

java.lang.Object

com.fortanix.sdkms.jce.provider.ciphers.CipherCore

public class CipherCore
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	CipherCore.CipherType

Constructor Summary

Constructors

Constructor	Description
CipherCore(com.fortanix.sdkms.v1.model.ObjectType alg, int blkSize, CipherCore.CipherType cipherType)

Method Summary

Modifier and Type	Method	Description
byte[]	doFinal(byte[] input, int inputOffset, int inputLen)
int	doFinal(byte[] input, int inputOffset, int inputLen, byte[] output, int outputOffset)
int	getBlockSize()
com.fortanix.sdkms.v1.model.CryptMode	getCryptMode()
byte[]	getIv()
SdkmsCipherKey	getKey()
String	getOperation()
int	getOutputSize(int inputLen)	The actual encrypted/decrypted data size can be smaller then the length return by this method
String	getPadding()
void	init(int opmode, Key key)
void	init(int opmode, Key key, AlgorithmParameters params)
void	init(int opmode, Key key, AlgorithmParameterSpec params)
void	initMultiCore()
protected boolean	isPaddingRequired()
protected void	prepareDoFinal()
protected void	resetFields()
void	setBlockSize(int blockSize)
void	setCryptMode(com.fortanix.sdkms.v1.model.CryptMode cryptMode)
void	setPadding(String padding)
void	setState(byte[] state)
protected void	switchCryptMode()
Key	unwrap(byte[] wrappedKey, String wrappedKeyAlgorithm, int wrappedKeyType)	Decrypt the wrapped key and return JCE key object
byte[]	update(byte[] input, int inputOffset, int inputLen)	return encrypted / plain bytes depend upon cipher mode
int	update(byte[] input, int inputOffset, int inputLen, byte[] output, int outputOffset)	This method doesn't perform any encryption.
void	updateAAD(byte[] src, int offset, int len)
protected void	validateParameters()
byte[]	wrap(Key key)	Encrypt input key

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CipherCore

public CipherCore(com.fortanix.sdkms.v1.model.ObjectType alg,
                  int blkSize,
                  CipherCore.CipherType cipherType)

Method Detail

init

public void init(int opmode,
                 Key key,
                 AlgorithmParameterSpec params)
          throws InvalidKeyException,
                 InvalidAlgorithmParameterException

Parameters:

opmode -

key -

params -

Throws:

InvalidKeyException

InvalidAlgorithmParameterException

init

public void init(int opmode,
                 Key key)
          throws InvalidKeyException

Parameters:

opmode - operation mode of this cipher. Possible values are ENCRYPT_MODE, DECRYPT_MODE, WRAP_MODE or UNWRAP_MODE

key - the secret key

Throws:

InvalidAlgorithmParameterException

InvalidKeyException

init

public void init(int opmode,
                 Key key,
                 AlgorithmParameters params)
          throws InvalidKeyException,
                 InvalidAlgorithmParameterException

Throws:

InvalidKeyException

InvalidAlgorithmParameterException

initMultiCore

public void initMultiCore()

update

public byte[] update(byte[] input,
                     int inputOffset,
                     int inputLen)

return encrypted / plain bytes depend upon cipher mode

update

public int update(byte[] input,
                  int inputOffset,
                  int inputLen,
                  byte[] output,
                  int outputOffset)
           throws ShortBufferException

This method doesn't perform any encryption. Call doFinal for encryption/decryption operation

Parameters:

input -

inputOffset -

inputLen -

output -

outputOffset -

Returns:

zero. As nothing is copied into output

Throws:

ShortBufferException

doFinal

public byte[] doFinal(byte[] input,
                      int inputOffset,
                      int inputLen)

Parameters:

input -

inputOffset -

inputLen -

Returns:

encrypted/decrypted content

doFinal

public int doFinal(byte[] input,
                   int inputOffset,
                   int inputLen,
                   byte[] output,
                   int outputOffset)
            throws ShortBufferException

Parameters:

input -

inputOffset -

inputLen -

output - , cipher/plain text as per operation mode

outputOffset -

Returns:

Throws:

ShortBufferException

prepareDoFinal

protected void prepareDoFinal()

setCryptMode

public void setCryptMode(com.fortanix.sdkms.v1.model.CryptMode cryptMode)

setPadding

public void setPadding(String padding)

getOutputSize

public int getOutputSize(int inputLen)

The actual encrypted/decrypted data size can be smaller then the length return by this method

Parameters:

inputLen -

Returns:

required output buffer size in bytes

updateAAD

public void updateAAD(byte[] src,
                      int offset,
                      int len)

wrap

public byte[] wrap(Key key)
            throws InvalidKeyException

Encrypt input key

Parameters:

key - to be wrapped

Returns:

wrapped key

Throws:

InvalidKeyException

unwrap

public Key unwrap(byte[] wrappedKey,
                  String wrappedKeyAlgorithm,
                  int wrappedKeyType)
           throws InvalidKeyException

Decrypt the wrapped key and return JCE key object

Parameters:

wrappedKey -

wrappedKeyAlgorithm -

wrappedKeyType -

Returns:

Key object

Throws:

InvalidKeyException

getIv

public byte[] getIv()

getPadding

public String getPadding()

getOperation

public String getOperation()

getCryptMode

public com.fortanix.sdkms.v1.model.CryptMode getCryptMode()

getBlockSize

public int getBlockSize()

setBlockSize

public void setBlockSize(int blockSize)

getKey

public SdkmsCipherKey getKey()

validateParameters

protected void validateParameters()

switchCryptMode

protected void switchCryptMode()

isPaddingRequired

protected boolean isPaddingRequired()

setState

public void setState(byte[] state)

resetFields

protected void resetFields()