net.schmizz.sshj.signature

Class AbstractSignature

java.lang.Object

net.schmizz.sshj.signature.AbstractSignature

All Implemented Interfaces:

Signature

Direct Known Subclasses:

SignatureDSA, SignatureECDSA, SignatureRSA

public abstract class AbstractSignature
extends java.lang.Object
implements Signature

An abstract class for Signature that implements common functionality.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.lang.String	algorithm
protected java.security.Signature	signature

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractSignature(java.lang.String algorithm)

Method Summary

Methods

Modifier and Type	Method and Description
protected byte[]	extractSig(byte[] sig)
void	init(java.security.PublicKey publicKey, java.security.PrivateKey privateKey) Initialize this signature with the given public key and private key.
byte[]	sign() Compute the signature.
void	update(byte[] foo) Convenience method, same as calling Signature.update(byte[], int, int) with offset as 0 and H.length.
void	update(byte[] foo, int off, int len) Update the computed signature with the given data.

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.schmizz.sshj.signature.Signature

encode, verify

Field Detail

algorithm

protected final java.lang.String algorithm

signature

protected java.security.Signature signature

Constructor Detail

AbstractSignature

protected AbstractSignature(java.lang.String algorithm)

Method Detail

init

public void init(java.security.PublicKey publicKey,
        java.security.PrivateKey privateKey)

Description copied from interface: Signature

Initialize this signature with the given public key and private key. If the private key is null, only signature verification can be performed.

Specified by:

init in interface Signature

Parameters:

publicKey - (null-ok) specify in case verification is needed

privateKey - (null-ok) specify in case signing is needed

update

public void update(byte[] foo)

Description copied from interface: Signature

Convenience method, same as calling Signature.update(byte[], int, int) with offset as 0 and H.length.

Specified by:

update in interface Signature

Parameters:

foo - the byte-array to update with

update

public void update(byte[] foo,
          int off,
          int len)

Description copied from interface: Signature

Update the computed signature with the given data.

Specified by:

update in interface Signature

Parameters:

foo - byte-array to update with

off - offset within the array

len - length until which to compute

sign

public byte[] sign()

Description copied from interface: Signature

Compute the signature.

Specified by:

sign in interface Signature

Returns:

the computed signature

extractSig

protected byte[] extractSig(byte[] sig)