public class SignatureDSA extends AbstractSignature
Signature
Modifier and Type | Field and Description |
---|---|
static java.lang.String |
DEFAULT_ALGORITHM |
static int |
DSA_SIGNATURE_LENGTH |
static int |
MAX_SIGNATURE_VALUE_LENGTH |
Modifier | Constructor and Description |
---|---|
|
SignatureDSA() |
protected |
SignatureDSA(java.lang.String algorithm) |
Modifier and Type | Method and Description |
---|---|
static void |
putBigInteger(java.math.BigInteger value,
byte[] result,
int offset) |
byte[] |
sign(SessionContext session)
Compute the signature
|
boolean |
verify(SessionContext session,
byte[] sig)
Verify against the given signature
|
doInitSignature, doVerify, extractEncodedSignature, extractEncodedSignature, getAlgorithm, getSignature, initSigner, initVerifier, toString, update
public static final java.lang.String DEFAULT_ALGORITHM
public static final int DSA_SIGNATURE_LENGTH
public static final int MAX_SIGNATURE_VALUE_LENGTH
public SignatureDSA()
protected SignatureDSA(java.lang.String algorithm)
public byte[] sign(SessionContext session) throws java.lang.Exception
Signature
sign
in interface Signature
sign
in class AbstractSignature
session
- The SessionContext
for calling this method - may be null
if not called within a
session contextjava.lang.Exception
- If failed to calculate the signaturepublic static void putBigInteger(java.math.BigInteger value, byte[] result, int offset)
public boolean verify(SessionContext session, byte[] sig) throws java.lang.Exception
Signature
session
- The SessionContext
for calling this method - may be null
if not called within a
session contextsig
- The signed datatrue
if signature is validjava.lang.Exception
- If failed to extract signed data for validation