Package org.apache.xml.security.algorithms.implementations

Class ECDSAUtils

java.lang.Object

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

public final class ECDSAUtils
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ECDSAUtils.ECCurveDefinition

Field Summary

Fields

Modifier and Type	Field	Description
private static java.util.List<ECDSAUtils.ECCurveDefinition>	ecCurveDefinitions

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ECDSAUtils()

Method Summary

Modifier and Type	Method	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 java.security.spec.ECPoint	decodePoint(byte[] encodedBytes, java.security.spec.EllipticCurve elliptiCcurve)
static byte[]	encodePoint(java.security.spec.ECPoint ecPoint, java.security.spec.EllipticCurve ellipticCurve)
static ECDSAUtils.ECCurveDefinition	getECCurveDefinition(java.lang.String oid)
static java.lang.String	getOIDFromPublicKey(java.security.interfaces.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

Field Detail

ecCurveDefinitions

private static final java.util.List<ECDSAUtils.ECCurveDefinition> ecCurveDefinitions

Constructor Detail

ECDSAUtils

private ECDSAUtils()

Method Detail

convertASN1toXMLDSIG

public static byte[] convertASN1toXMLDSIG(byte[] asn1Bytes)
                                   throws java.io.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:

java.io.IOException

See Also:

6.4.1 DSA, 3.3. ECDSA Signatures

convertXMLDSIGtoASN1

public static byte[] convertXMLDSIGtoASN1(byte[] xmldsigBytes)
                                   throws java.io.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:

java.io.IOException

See Also:

6.4.1 DSA, 3.3. ECDSA Signatures

getOIDFromPublicKey

public static java.lang.String getOIDFromPublicKey(java.security.interfaces.ECPublicKey ecPublicKey)

getECCurveDefinition

public static ECDSAUtils.ECCurveDefinition getECCurveDefinition(java.lang.String oid)

encodePoint

public static byte[] encodePoint(java.security.spec.ECPoint ecPoint,
                                 java.security.spec.EllipticCurve ellipticCurve)

decodePoint

public static java.security.spec.ECPoint decodePoint(byte[] encodedBytes,
                                                     java.security.spec.EllipticCurve elliptiCcurve)

stripLeadingZeros

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