com.motorola.iden.provider
Class SHA1withRSA

java.lang.Object
  |
  +--com.motorola.iden.security.SignatureSpi
        |
        +--com.motorola.iden.provider.SHA1withRSA

public class SHA1withRSA

extends SignatureSpi

This class provides SHA1withRSA key sign algoirthm.

MOTOROLA and the Stylized M Logo are registered trademarks of Motorola, Inc. Reg. U.S. Pat. & Tm. Off.
© Copyright 2002 - 2004 Motorola, Inc. All Rights Reserved.

See Also:

[CipherSpi]

Constructor Summary

SHA1withRSA()

Method Summary

protected void	engineInitSign(PrivateKey privateKey) Initializes this signature object with the specified private key for signing operations.
protected void	engineInitVerify(PublicKey publicKey) Initializes this signature object with the specified public key for verification operations.
protected void	engineSetParameter(AlgorithmParameterSpec params) This method is overridden by providers to initialize this signature engine with the specified parameter set.
protected byte[]	engineSign() Returns the signature bytes of the input data The format of the signature depends on the underlying signature scheme.
protected void	engineUpdate(byte[] b, int off, int len) Updates the data to be signed or verified, using the specified array of bytes, starting at the specified offset.
protected boolean	engineVerify(byte[] sigBytes) Verifies the passed-in signature.
protected void	finalize()

Methods inherited from class com.motorola.iden.security.SignatureSpi

engineGetParameter

Methods inherited from class java.lang.Object

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

Constructor Detail

SHA1withRSA

public SHA1withRSA()

Method Detail

engineInitSign

protected void engineInitSign(PrivateKey privateKey)
                       throws InvalidKeyException

Initializes this signature object with the specified private key for signing operations.

Overrides:

engineInitSign in class SignatureSpi

Parameters:

privateKey - the private key of the identity whose signature will be generated.

Throws:

InvalidKeyException - if the key is improperly encoded, parameters are missing, and so on. will be generated.

engineInitVerify

protected void engineInitVerify(PublicKey publicKey)
                         throws InvalidKeyException

Initializes this signature object with the specified public key for verification operations.

Overrides:

engineInitVerify in class SignatureSpi

Parameters:

publicKey - the public key of the identity whose signature is going to be verified.

Throws:

InvalidKeyException - if the key is improperly encoded, parameters are missing, and so on.

engineUpdate

protected void engineUpdate(byte[] b,
                            int off,
                            int len)
                     throws SignatureException

Updates the data to be signed or verified, using the specified array of bytes, starting at the specified offset.

Overrides:

engineUpdate in class SignatureSpi

Parameters:

b - the array of bytes

off - the offset to start from in the array of bytes

len - the number of bytes to use, starting at offset

Throws:

SignatureException - if the engine is not initialized properly

engineSign

protected byte[] engineSign()
                     throws SignatureException

Returns the signature bytes of the input data The format of the signature depends on the underlying signature scheme.

Overrides:

engineSign in class SignatureSpi

Returns:

the signature bytes of the signing operation's result.

Throws:

SignatureException - if the engine is not initialized properly.

engineVerify

protected boolean engineVerify(byte[] sigBytes)
                        throws SignatureException

Verifies the passed-in signature.

Overrides:

engineVerify in class SignatureSpi

Parameters:

sigBytes - the signature bytes to be verified.

input - the message to be verified.

Returns:

true if the signature was verified, false if not.

Throws:

SignatureException - if the engine is not initialized properly, or the passed-in signature is improperly encoded or of the wrong type, etc.

engineSetParameter

protected final void engineSetParameter(AlgorithmParameterSpec params)
                                 throws InvalidAlgorithmParameterException

This method is overridden by providers to initialize this signature engine with the specified parameter set.

Overrides:

engineSetParameter in class SignatureSpi

Parameters:

params - the parameters

Throws:

InvalidAlgorithmParameterException - if given parameters are inappropriate for this signature engine

finalize

protected void finalize()

Overrides:

finalize in class java.lang.Object