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java.lang.Object com.nimbusds.jose.crypto.ECDSASigner
@ThreadSafe public class ECDSASigner
Elliptic Curve Digital Signature Algorithm (ECDSA) signer of
JWS objects
. This class is thread-safe.
Supports the following JSON Web Algorithms (JWAs):
Field Summary | |
---|---|
static Set<JWSAlgorithm> |
SUPPORTED_ALGORITHMS
The supported JWS algorithms. |
Constructor Summary | |
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ECDSASigner(BigInteger privateKey)
Creates a new Elliptic Curve Digital Signature Algorithm (ECDSA) signer. |
Method Summary | |
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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. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface com.nimbusds.jose.JWSAlgorithmProvider |
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supportedAlgorithms |
Field Detail |
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public static final Set<JWSAlgorithm> SUPPORTED_ALGORITHMS
Constructor Detail |
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public ECDSASigner(BigInteger privateKey)
privateKey
- The private key ('d' parameter). Must not be
null
.Method Detail |
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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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