Package com.hierynomus.sshj.transport.cipher

Class ChachaPolyCipher

java.lang.Object

net.schmizz.sshj.transport.cipher.BaseCipher

com.hierynomus.sshj.transport.cipher.ChachaPolyCipher

All Implemented Interfaces:

Cipher

public class ChachaPolyCipher
extends BaseCipher

Nested Class Summary

Nested classes/interfaces inherited from interface net.schmizz.sshj.transport.cipher.Cipher

Cipher.Mode

Field Summary

Fields

Modifier and Type	Field	Description
protected javax.crypto.Cipher	aadCipher
protected java.security.Key	aadCipherKey
protected java.security.Key	cipherKey
protected javax.crypto.Mac	mac
protected Cipher.Mode	mode

Fields inherited from class net.schmizz.sshj.transport.cipher.BaseCipher

cipher

Constructor Summary

Constructors

Constructor	Description
ChachaPolyCipher(int authSize, int bsize, java.lang.String algorithm)

Method Summary

Modifier and Type	Method	Description
int	getAuthenticationTagSize()
protected void	initCipher(javax.crypto.Cipher cipher, Cipher.Mode mode, byte[] key, byte[] iv)
void	setSequenceNumber(long seq)
void	update(byte[] input, int inputOffset, int inputLen)	Performs in-place encryption or decryption on the given data.
void	updateAAD(byte[] data)	Adds the provided input data as additional authenticated data during encryption or decryption.
void	updateAAD(byte[] data, int offset, int length)	Adds the provided input data as additional authenticated data during encryption or decryption.

Methods inherited from class net.schmizz.sshj.transport.cipher.BaseCipher

getBlockSize, getIVSize, getKeySpec, getMode, init, updateWithAAD

Methods inherited from class java.lang.Object

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

Field Detail

mode

protected Cipher.Mode mode

aadCipher

protected javax.crypto.Cipher aadCipher

mac

protected javax.crypto.Mac mac

cipherKey

protected java.security.Key cipherKey

aadCipherKey

protected java.security.Key aadCipherKey

Constructor Detail

ChachaPolyCipher

public ChachaPolyCipher(int authSize,
                        int bsize,
                        java.lang.String algorithm)

Method Detail

getAuthenticationTagSize

public int getAuthenticationTagSize()

Specified by:

getAuthenticationTagSize in interface Cipher

Overrides:

getAuthenticationTagSize in class BaseCipher

Returns:

Size of the authentication tag (AT) in bytes or 0 if this cipher does not support authentication

setSequenceNumber

public void setSequenceNumber(long seq)

Specified by:

setSequenceNumber in interface Cipher

Overrides:

setSequenceNumber in class BaseCipher

initCipher

protected void initCipher(javax.crypto.Cipher cipher,
                          Cipher.Mode mode,
                          byte[] key,
                          byte[] iv)
                   throws java.security.InvalidKeyException,
                          java.security.InvalidAlgorithmParameterException

Specified by:

initCipher in class BaseCipher

Throws:

java.security.InvalidKeyException

java.security.InvalidAlgorithmParameterException

updateAAD

public void updateAAD(byte[] data,
                      int offset,
                      int length)

Description copied from interface: Cipher

Adds the provided input data as additional authenticated data during encryption or decryption.

Specified by:

updateAAD in interface Cipher

Overrides:

updateAAD in class BaseCipher

Parameters:

data - The additional data to authenticate

offset - The offset of the additional data in the buffer

length - The number of bytes in the buffer to use for authentication

updateAAD

public void updateAAD(byte[] data)

Description copied from interface: Cipher

Adds the provided input data as additional authenticated data during encryption or decryption.

Specified by:

updateAAD in interface Cipher

Overrides:

updateAAD in class BaseCipher

Parameters:

data - The data to authenticate

update

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

Description copied from interface: Cipher

Performs in-place encryption or decryption on the given data.

Specified by:

update in interface Cipher

Overrides:

update in class BaseCipher

Parameters:

input - the subject

inputOffset - offset at which to start

inputLen - number of bytes starting at inputOffset