Package org.bouncycastle.jcajce.provider.asymmetric.rsa

Class DigestSignatureSpi

java.lang.Object

java.security.SignatureSpi

org.bouncycastle.jcajce.provider.asymmetric.rsa.DigestSignatureSpi

Direct Known Subclasses:

DigestSignatureSpi.MD5, DigestSignatureSpi.SHA1, DigestSignatureSpi.SHA224, DigestSignatureSpi.SHA256, DigestSignatureSpi.SHA384, DigestSignatureSpi.SHA512

public class DigestSignatureSpi
extends SignatureSpi

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DigestSignatureSpi.MD5
static class	DigestSignatureSpi.SHA1
static class	DigestSignatureSpi.SHA224
static class	DigestSignatureSpi.SHA256
static class	DigestSignatureSpi.SHA384
static class	DigestSignatureSpi.SHA512

Field Summary

Fields inherited from class java.security.SignatureSpi

appRandom

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	DigestSignatureSpi(ASN1ObjectIdentifier objId, Digest digest, AsymmetricBlockCipher cipher)
protected	DigestSignatureSpi(Digest digest, AsymmetricBlockCipher cipher)

Method Summary

Modifier and Type	Method	Description
protected Object	engineGetParameter(String param)	Deprecated.
protected AlgorithmParameters	engineGetParameters()	Returns the AlgorithmParameters of this SignatureSpi instance.
protected void	engineInitSign(PrivateKey privateKey)	Initializes this SignatureSpi instance for signing, using the private key of the identity whose signature is going to be generated.
protected void	engineInitVerify(PublicKey publicKey)	Initializes this SignatureSpi instance for signature verification, using the public key of the identity whose signature is going to be verified.
protected void	engineSetParameter(String param, Object value)	Deprecated. replaced with
protected void	engineSetParameter(AlgorithmParameterSpec params)	Sets the specified AlgorithmParameterSpec.
protected byte[]	engineSign()	Generates and returns the signature of all updated data.
protected void	engineUpdate(byte b)	Updates the data to be verified or to be signed, using the specified byte.
protected void	engineUpdate(byte[] b, int off, int len)	Updates the data to be verified or to be signed, using the given byte[], starting form the specified index for the specified length.
protected boolean	engineVerify(byte[] sigBytes)	Indicates whether the given sigBytes can be verified using the public key or a certificate of the signer.

Methods inherited from class java.security.SignatureSpi

clone, engineInitSign, engineSign, engineUpdate, engineVerify

Methods inherited from class java.lang.Object

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

Constructor Detail

DigestSignatureSpi

protected DigestSignatureSpi(Digest digest,
                             AsymmetricBlockCipher cipher)

DigestSignatureSpi

protected DigestSignatureSpi(ASN1ObjectIdentifier objId,
                             Digest digest,
                             AsymmetricBlockCipher cipher)

Method Detail

engineInitVerify

protected void engineInitVerify(PublicKey publicKey)
                         throws InvalidKeyException

Description copied from class: SignatureSpi

Initializes this SignatureSpi instance for signature verification, using the public key of the identity whose signature is going to be verified.

Specified by:

engineInitVerify in class SignatureSpi

Parameters:

publicKey - the public key.

Throws:

InvalidKeyException - if publicKey is not valid.

engineInitSign

protected void engineInitSign(PrivateKey privateKey)
                       throws InvalidKeyException

Description copied from class: SignatureSpi

Initializes this SignatureSpi instance for signing, using the private key of the identity whose signature is going to be generated.

Specified by:

engineInitSign in class SignatureSpi

Parameters:

privateKey - the private key.

Throws:

InvalidKeyException - if privateKey is not valid.

engineUpdate

protected void engineUpdate(byte b)
                     throws SignatureException

Description copied from class: SignatureSpi

Updates the data to be verified or to be signed, using the specified byte.

Specified by:

engineUpdate in class SignatureSpi

Parameters:

b - the byte to update with.

Throws:

SignatureException - if this SignatureSpi instance is not initialized properly.

engineUpdate

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

Description copied from class: SignatureSpi

Updates the data to be verified or to be signed, using the given byte[], starting form the specified index for the specified length.

Specified by:

engineUpdate in class SignatureSpi

Parameters:

b - the byte array to update with.

off - the start index in b of the data.

len - the number of bytes to use.

Throws:

SignatureException - if this SignatureSpi instance is not initialized properly.

engineSign

protected byte[] engineSign()
                     throws SignatureException

Description copied from class: SignatureSpi

Generates and returns the signature of all updated data.

This SignatureSpi instance is reset to the state of its last initialization for signing and thus can be used for another signature from the same identity.

Specified by:

engineSign in class SignatureSpi

Returns:

the signature of all updated data.

Throws:

SignatureException - if this SignatureSpi instance is not initialized properly.

engineVerify

protected boolean engineVerify(byte[] sigBytes)
                        throws SignatureException

Description copied from class: SignatureSpi

Indicates whether the given sigBytes can be verified using the public key or a certificate of the signer.

This SignatureSpi instance is reset to the state of its last initialization for verifying and thus can be used to verify another signature of the same signer.

Specified by:

engineVerify in class SignatureSpi

Parameters:

sigBytes - the signature to verify.

Returns:

true if the signature was verified, false otherwise.

Throws:

SignatureException - if this SignatureSpi instance is not initialized properly.

engineSetParameter

protected void engineSetParameter(AlgorithmParameterSpec params)

Description copied from class: SignatureSpi

Sets the specified AlgorithmParameterSpec.

Overrides:

engineSetParameter in class SignatureSpi

Parameters:

params - the parameter to set.

engineSetParameter

protected void engineSetParameter(String param,
                                  Object value)

Deprecated.

replaced with

Description copied from class: SignatureSpi

Sets the specified parameter to the given value.

Specified by:

engineSetParameter in class SignatureSpi

Parameters:

param - the name of the parameter.

value - the parameter value.

engineGetParameter

protected Object engineGetParameter(String param)

Deprecated.

Description copied from class: SignatureSpi

Returns the value of the parameter with the specified name.

Specified by:

engineGetParameter in class SignatureSpi

Parameters:

param - the name of the requested parameter value.

Returns:

the value of the parameter with the specified name, maybe null.

engineGetParameters

protected AlgorithmParameters engineGetParameters()

Description copied from class: SignatureSpi

Returns the AlgorithmParameters of this SignatureSpi instance.

Overrides:

engineGetParameters in class SignatureSpi

Returns:

the AlgorithmParameters of this SignatureSpi instance, maybe null.