Signer, ECConstantspublic class SM2Signer extends java.lang.Object implements Signer, ECConstants
| Constructor | Description |
|---|---|
SM2Signer() |
| Modifier and Type | Method | Description |
|---|---|---|
protected java.math.BigInteger |
calculateE(byte[] message) |
|
protected ECMultiplier |
createBasePointMultiplier() |
|
protected java.math.BigInteger[] |
derDecode(byte[] encoding) |
|
protected byte[] |
derEncode(java.math.BigInteger r,
java.math.BigInteger s) |
|
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.
|
public void init(boolean forSigning,
CipherParameters param)
Signerpublic void update(byte b)
Signerpublic void update(byte[] in,
int off,
int len)
Signerpublic boolean verifySignature(byte[] signature)
SignerverifySignature in interface Signerpublic void reset()
Signerpublic byte[] generateSignature()
throws CryptoException
SignergenerateSignature in interface SignerCryptoExceptionprotected ECMultiplier createBasePointMultiplier()
protected java.math.BigInteger calculateE(byte[] message)
protected java.math.BigInteger[] derDecode(byte[] encoding)
throws java.io.IOException
java.io.IOExceptionprotected byte[] derEncode(java.math.BigInteger r,
java.math.BigInteger s)
throws java.io.IOException
java.io.IOException