org.apache.sshd.common.signature

Class SignatureRSA

java.lang.Object

org.apache.sshd.common.signature.AbstractSignature

org.apache.sshd.common.signature.SignatureRSA

All Implemented Interfaces:

AlgorithmNameProvider, Signature

public class SignatureRSA
extends AbstractSignature

RSA Signature

See Also:

RFC4253 section 6.6

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	DEFAULT_ALGORITHM
private int	verifierSignatureSize

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
protected int	getVerifierSignatureSize()
static int	getVerifierSignatureSize(java.security.interfaces.RSAKey key)
void	initVerifier(java.security.PublicKey key)
boolean	verify(byte[] sig) Verify against the given signature

Methods inherited from class org.apache.sshd.common.signature.AbstractSignature

doInitSignature, doVerify, extractEncodedSignature, getAlgorithm, getSignature, initSigner, sign, toString, update

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.sshd.common.signature.Signature

update

Field Detail

DEFAULT_ALGORITHM

public static final java.lang.String DEFAULT_ALGORITHM

See Also:

Constant Field Values

verifierSignatureSize

private int verifierSignatureSize

Constructor Detail

SignatureRSA

public SignatureRSA()

SignatureRSA

protected SignatureRSA(java.lang.String algorithm)

Method Detail

getVerifierSignatureSize

protected int getVerifierSignatureSize()

Returns:

The expected number of bytes in the signature - non-positive if not initialized or not intended to be used for verification

initVerifier

public void initVerifier(java.security.PublicKey key)
                  throws java.lang.Exception

Specified by:

initVerifier in interface Signature

Overrides:

initVerifier in class AbstractSignature

Parameters:

key - The PublicKey to be used for verifying signatures

Throws:

java.lang.Exception - If failed to initialize

getVerifierSignatureSize

public static int getVerifierSignatureSize(java.security.interfaces.RSAKey key)

verify

public boolean verify(byte[] sig)
               throws java.lang.Exception

Description copied from interface: Signature

Verify against the given signature

Parameters:

sig - The signed data

Returns:

true if signature is valid

Throws:

java.lang.Exception - If failed to extract signed data for validation