org.apache.xml.security.algorithms.implementations

Class ECDSAUtils

java.lang.Object

org.apache.xml.security.algorithms.implementations.ECDSAUtils

public final class ECDSAUtils
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ECDSAUtils.ECCurveDefinition

Method Summary

Modifier and Type	Method and Description
static byte[]	convertASN1toXMLDSIG(byte[] asn1Bytes) Converts an ASN.1 ECDSA value to a XML Signature ECDSA Value.
static byte[]	convertXMLDSIGtoASN1(byte[] xmldsigBytes) Converts a XML Signature ECDSA Value to an ASN.1 DSA value.
static ECPoint	decodePoint(byte[] encodedBytes, EllipticCurve elliptiCcurve)
static byte[]	encodePoint(ECPoint ecPoint, EllipticCurve ellipticCurve)
static ECDSAUtils.ECCurveDefinition	getECCurveDefinition(String oid)
static String	getOIDFromPublicKey(ECPublicKey ecPublicKey)
static byte[]	stripLeadingZeros(byte[] bytes)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

convertASN1toXMLDSIG

public static byte[] convertASN1toXMLDSIG(byte[] asn1Bytes)
                                   throws IOException

Converts an ASN.1 ECDSA value to a XML Signature ECDSA Value.

The JAVA JCE ECDSA Signature algorithm creates ASN.1 encoded (r, s) value pairs; the XML Signature requires the core BigInteger values.

Parameters:

asn1Bytes -

Returns:

the decode bytes

Throws:

IOException

See Also:

6.4.1 DSA, 3.3. ECDSA Signatures

convertXMLDSIGtoASN1

public static byte[] convertXMLDSIGtoASN1(byte[] xmldsigBytes)
                                   throws IOException

Converts a XML Signature ECDSA Value to an ASN.1 DSA value.

The JAVA JCE ECDSA Signature algorithm creates ASN.1 encoded (r, s) value pairs; the XML Signature requires the core BigInteger values.

Parameters:

xmldsigBytes -

Returns:

the encoded ASN.1 bytes

Throws:

IOException

See Also:

6.4.1 DSA, 3.3. ECDSA Signatures

getOIDFromPublicKey

public static String getOIDFromPublicKey(ECPublicKey ecPublicKey)

getECCurveDefinition

public static ECDSAUtils.ECCurveDefinition getECCurveDefinition(String oid)

encodePoint

public static byte[] encodePoint(ECPoint ecPoint,
                                 EllipticCurve ellipticCurve)

decodePoint

public static ECPoint decodePoint(byte[] encodedBytes,
                                  EllipticCurve elliptiCcurve)

stripLeadingZeros

public static byte[] stripLeadingZeros(byte[] bytes)