Module org.apache.santuario.xmlsec

Package 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	Description
static class	ECDSAUtils.ECCurveDefinition

Method Summary

Modifier and Type	Method	Description
static byte[]	convertASN1toXMLDSIG(byte[] asn1Bytes, int rawLen)	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,
                                          int rawLen)
                                   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 - the ASN.1 encoded bytes

rawLen - the intended length of decoded bytes for an integer. If -1, choose one automatically.

Returns:

the decoded 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)