org.bouncycastle.crypto.signers
Class PSSSigner
java.lang.Object
|
+--org.bouncycastle.crypto.signers.PSSSigner
- All Implemented Interfaces:
- Signer
- public class PSSSigner
- extends java.lang.Object
- implements Signer
RSA-PSS as described in PKCS# 1 v 2.1.
Note: the usual value for the salt length is the number of
bytes in the hash function.
Method Summary |
byte[] |
generateSignature()
generate a signature for the message we've been loaded with using
the key we were initialised with. |
void |
init(boolean forSigning,
CipherParameters param)
Initialise the signer for signing or verification. |
void |
reset()
reset the internal state |
void |
update(byte b)
update the internal digest with the byte b |
void |
update(byte[] in,
int off,
int len)
update the internal digest with the byte array in |
boolean |
verifySignature(byte[] signature)
return true if the internal state represents the signature described
in the passed in array. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
TRAILER_IMPLICIT
public static final byte TRAILER_IMPLICIT
PSSSigner
public PSSSigner(AsymmetricBlockCipher cipher,
Digest digest,
int sLen)
- basic constructor
- Parameters:
cipher
- the assymetric cipher to use.digest
- the digest to use.sLen
- the length of the salt to use (in bytes).
init
public void init(boolean forSigning,
CipherParameters param)
- Description copied from interface:
Signer
- Initialise the signer for signing or verification.
- Specified by:
init
in interface Signer
- Following copied from interface:
org.bouncycastle.crypto.Signer
- Parameters:
forSigning
- true if for signing, false otherwiseparam
- necessary parameters.
update
public void update(byte b)
- update the internal digest with the byte b
- Specified by:
update
in interface Signer
update
public void update(byte[] in,
int off,
int len)
- update the internal digest with the byte array in
- Specified by:
update
in interface Signer
reset
public void reset()
- reset the internal state
- Specified by:
reset
in interface Signer
generateSignature
public byte[] generateSignature()
throws CryptoException,
DataLengthException
- generate a signature for the message we've been loaded with using
the key we were initialised with.
- Specified by:
generateSignature
in interface Signer
verifySignature
public boolean verifySignature(byte[] signature)
- return true if the internal state represents the signature described
in the passed in array.
- Specified by:
verifySignature
in interface Signer