de.flexiprovider.core.rsa
Class SSLSignature

java.lang.Object
  |
  +--java.security.SignatureSpi
        |
        +--de.flexiprovider.api.Signature
              |
              +--de.flexiprovider.core.rsa.SSLSignature

public class SSLSignature

extends Signature

This class implements the RSA signature algorithm as defined in SSL. Note that this is a special version of a RSA signature that does not use a PKCS#1-compliant DigestInfo structure!

Fields inherited from class java.security.SignatureSpi

appRandom

Constructor Summary

SSLSignature()

Method Summary

void	initSign(PrivateKey privateKey, SecureRandom secureRandom) Initializes the signature algorithm for signing a message.
void	initVerify(PublicKey publicKey) Initializes the signature algorithm for verifying a signature.
void	setParameters(AlgorithmParameterSpec params) Set parameters for the signature (not used).
byte[]	sign() Signs a message.
void	update(byte b) Passes a message byte to the message digest.
void	update(byte[] b, int offset, int length) Passes message bytes to the message digest.
boolean	verify(byte[] signature) Verifies a signature.

Methods inherited from class de.flexiprovider.api.Signature

engineGetParameter, engineInitSign, engineInitSign, engineInitVerify, engineSetParameter, engineSetParameter, engineSign, engineUpdate, engineUpdate, engineVerify, engineVerify, initSign, sign, update, verify, verify, verify

Methods inherited from class java.security.SignatureSpi

clone, engineSign

Methods inherited from class java.lang.Object

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

Constructor Detail

SSLSignature

public SSLSignature()

Method Detail

initSign

public void initSign(PrivateKey privateKey,
                     SecureRandom secureRandom)
              throws InvalidKeyException

Initializes the signature algorithm for signing a message.

Overrides:

initSign in class Signature

Parameters:

privateKey - the private key of the signer.

secureRandom - the source of randomness.

Throws:

InvalidKeyException - if the key is not an instance of RSAPrivKey.

initVerify

public void initVerify(PublicKey publicKey)
                throws InvalidKeyException

Initializes the signature algorithm for verifying a signature.

Overrides:

initVerify in class Signature

Parameters:

publicKey - the public key of the signer.

Throws:

InvalidKeyException - if the public key is not an instance of RSAPubKey.

setParameters

public void setParameters(AlgorithmParameterSpec params)

Set parameters for the signature (not used).

Overrides:

setParameters in class Signature

Parameters:

params - the parameters (not used)

update

public void update(byte[] b,
                   int offset,
                   int length)

Passes message bytes to the message digest.

Overrides:

update in class Signature

Parameters:

b - The message byte.

offset - The index, where the message bytes starts.

length - The number of message bytes.

update

public void update(byte b)

Passes a message byte to the message digest.

Overrides:

update in class Signature

Parameters:

b - the message byte.

sign

public byte[] sign()
            throws SignatureException

Signs a message.

Overrides:

sign in class Signature

Returns:

the signature.

Throws:

SignatureException - if the signature is not initialized properly.

verify

public boolean verify(byte[] signature)

Verifies a signature.

Overrides:

verify in class Signature

Parameters:

signature - the signature to be verified

Returns:

true if the signature is correct - false otherwise.