Package com.sshtools.common.ssh.components

Interface SshHmac

All Superinterfaces:

Component, SecureComponent, SshComponent

All Known Implementing Classes:

AbstractHmac, HmacMD5, HmacMD596, HmacMD5ETM, HmacRipeMd160, HmacRipeMd160ETM, HmacSha1, HmacSha196, HmacSha1ETM, HmacSha256, HmacSha256_96, HmacSha256_at_ssh_dot_com, HmacSha256ETM, HmacSha512, HmacSha512_96, HmacSha512ETM, NoneHmac

public interface SshHmac
extends SshComponent, SecureComponent

This interface should be implemented by all message authentication implementations.

Author:

Lee David Painter

Method Summary

Modifier and Type	Method	Description
byte[]	doFinal()
void	generate(long sequenceNo, byte[] data, int offset, int len, byte[] output, int start)
String	getAlgorithm()
int	getMacLength()	The length of the message digest output by this implementation (maybe lower than mac size);
int	getMacSize()	The size of the message digest output by the hmac algorithm
void	init(byte[] keydata)
boolean	isETM()
void	update(byte[] b)
boolean	verify(long sequenceNo, byte[] data, int start, int len, byte[] mac, int offset)

Methods inherited from interface com.sshtools.common.ssh.SecureComponent

getPriority, getSecurityLevel

Method Details

getMacSize

int getMacSize()

The size of the message digest output by the hmac algorithm

Returns:

getMacLength

int getMacLength()

The length of the message digest output by this implementation (maybe lower than mac size);

Returns:

generate

void generate(long sequenceNo,
 byte[] data,
 int offset,
 int len,
 byte[] output,
 int start)

init

void init(byte[] keydata)
   throws SshException

Throws:

SshException

verify

boolean verify(long sequenceNo,
 byte[] data,
 int start,
 int len,
 byte[] mac,
 int offset)

update

void update(byte[] b)

doFinal

byte[] doFinal()

getAlgorithm

String getAlgorithm()

Specified by:

getAlgorithm in interface SecureComponent

Specified by:

getAlgorithm in interface SshComponent

isETM

boolean isETM()