com.nimbusds.jose.crypto
@ThreadSafe public class ECDSASigner extends Object implements JWSSigner
JWS objects
. This class is thread-safe.
Supports the following JSON Web Algorithms (JWAs):
Modifier and Type | Field and Description |
---|---|
static Set<JWSAlgorithm> |
SUPPORTED_ALGORITHMS
The supported JWS algorithms.
|
Constructor and Description |
---|
ECDSASigner(BigInteger privateKey)
Creates a new Elliptic Curve Digital Signature Algorithm (ECDSA)
signer.
|
Modifier and Type | Method and Description |
---|---|
protected static com.nimbusds.jose.crypto.ECDSAParameters |
getECDSAParameters(JWSAlgorithm alg)
Gets the initial parameters for the specified ECDSA-based JSON Web
Algorithm (JWA).
|
BigInteger |
getPrivateKey()
Gets the private key ('d' parameter).
|
protected static int |
getSignatureByteArrayLength(JWSAlgorithm alg)
Gets the expected signature byte array length (R + S parts) for the
specified ECDSA algorithm.
|
Base64URL |
sign(ReadOnlyJWSHeader header,
byte[] signingInput)
Signs the specified
input of a
JWS object . |
Set<JWSAlgorithm> |
supportedAlgorithms()
Returns the names of the supported JWS algorithms.
|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
supportedAlgorithms
public static final Set<JWSAlgorithm> SUPPORTED_ALGORITHMS
public ECDSASigner(BigInteger privateKey)
privateKey
- The private key ('d' parameter). Must not be
null
.public BigInteger getPrivateKey()
public Base64URL sign(ReadOnlyJWSHeader header, byte[] signingInput) throws JOSEException
JWSSigner
input
of a
JWS object
.sign
in interface JWSSigner
header
- The JSON Web Signature (JWS) header. Must
specify a supported JWS algorithm and must not
be null
.signingInput
- The input to sign. Must not be null
.JOSEException
- If the JWS algorithm is not supported or if
signing failed for some other reason.protected static int getSignatureByteArrayLength(JWSAlgorithm alg) throws JOSEException
alg
- The JSON Web Algorithm (JWA). Must be supported and not
null
.JOSEException
- If the algorithm is not supported.protected static com.nimbusds.jose.crypto.ECDSAParameters getECDSAParameters(JWSAlgorithm alg) throws JOSEException
alg
- The JSON Web Algorithm (JWA). Must be supported and not
null
.JOSEException
- If the algorithm is not supported.public Set<JWSAlgorithm> supportedAlgorithms()
JWSAlgorithmProvider
alg
JWS header parameter.supportedAlgorithms
in interface JWSAlgorithmProvider
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