com.tencent.kona.sun.security.util

Class ECUtil

java.lang.Object

com.tencent.kona.sun.security.util.ECUtil

public final class ECUtil
extends java.lang.Object

Method Summary

Modifier and Type	Method and Description
static java.security.interfaces.ECPrivateKey	checkPrivateKey(java.security.interfaces.ECPrivateKey prv) Check an ECPrivateKey to make sure the scalar value is within the range of the order [1, n-1].
static java.security.interfaces.ECPrivateKey	decodePKCS8ECPrivateKey(byte[] encoded)
static java.security.spec.ECPoint	decodePoint(byte[] data, java.security.spec.EllipticCurve curve)
static byte[]	decodeSignature(byte[] sig)
static java.security.interfaces.ECPublicKey	decodeX509ECPublicKey(byte[] encoded)
static byte[]	encodeECParameterSpec(java.security.Provider p, java.security.spec.ECParameterSpec spec)
static byte[]	encodePoint(java.security.spec.ECPoint point, java.security.spec.EllipticCurve curve)
static byte[]	encodeSignature(byte[] signature)
static boolean	equals(java.security.spec.ECParameterSpec spec1, java.security.spec.ECParameterSpec spec2)
static java.security.interfaces.ECPrivateKey	generateECPrivateKey(java.math.BigInteger s, java.security.spec.ECParameterSpec params)
static java.lang.String	getCurveName(java.security.Provider p, java.security.spec.ECParameterSpec spec)
static java.security.AlgorithmParameters	getECParameters(java.security.Provider p)
static java.security.spec.ECParameterSpec	getECParameterSpec(java.security.Provider p, byte[] params)
static java.security.spec.ECParameterSpec	getECParameterSpec(java.security.Provider p, java.security.spec.ECParameterSpec spec)
static java.security.spec.ECParameterSpec	getECParameterSpec(java.security.Provider p, int keySize)
static java.security.spec.ECParameterSpec	getECParameterSpec(java.security.Provider p, java.lang.String name)
static byte[]	sArray(java.math.BigInteger s, java.security.spec.ECParameterSpec params)
static byte[]	trimZeroes(byte[] b)
static void	validatePublicKey(java.security.spec.ECPoint point, java.security.spec.ECParameterSpec spec)
static byte[]	x509EncodeECPublicKey(java.security.spec.ECPoint w, java.security.spec.ECParameterSpec params)

Methods inherited from class java.lang.Object

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

Method Detail

sArray

public static byte[] sArray(java.math.BigInteger s,
                            java.security.spec.ECParameterSpec params)

decodePoint

public static java.security.spec.ECPoint decodePoint(byte[] data,
                                                     java.security.spec.EllipticCurve curve)
                                              throws java.io.IOException

Throws:

java.io.IOException

encodePoint

public static byte[] encodePoint(java.security.spec.ECPoint point,
                                 java.security.spec.EllipticCurve curve)

trimZeroes

public static byte[] trimZeroes(byte[] b)

decodeX509ECPublicKey

public static java.security.interfaces.ECPublicKey decodeX509ECPublicKey(byte[] encoded)
                                                                  throws java.security.spec.InvalidKeySpecException

Throws:

java.security.spec.InvalidKeySpecException

x509EncodeECPublicKey

public static byte[] x509EncodeECPublicKey(java.security.spec.ECPoint w,
                                           java.security.spec.ECParameterSpec params)
                                    throws java.security.spec.InvalidKeySpecException

Throws:

java.security.spec.InvalidKeySpecException

decodePKCS8ECPrivateKey

public static java.security.interfaces.ECPrivateKey decodePKCS8ECPrivateKey(byte[] encoded)
                                                                     throws java.security.spec.InvalidKeySpecException

Throws:

java.security.spec.InvalidKeySpecException

generateECPrivateKey

public static java.security.interfaces.ECPrivateKey generateECPrivateKey(java.math.BigInteger s,
                                                                         java.security.spec.ECParameterSpec params)
                                                                  throws java.security.spec.InvalidKeySpecException

Throws:

java.security.spec.InvalidKeySpecException

getECParameters

public static java.security.AlgorithmParameters getECParameters(java.security.Provider p)

encodeECParameterSpec

public static byte[] encodeECParameterSpec(java.security.Provider p,
                                           java.security.spec.ECParameterSpec spec)

getECParameterSpec

public static java.security.spec.ECParameterSpec getECParameterSpec(java.security.Provider p,
                                                                    java.security.spec.ECParameterSpec spec)

getECParameterSpec

public static java.security.spec.ECParameterSpec getECParameterSpec(java.security.Provider p,
                                                                    byte[] params)
                                                             throws java.io.IOException

Throws:

java.io.IOException

getECParameterSpec

public static java.security.spec.ECParameterSpec getECParameterSpec(java.security.Provider p,
                                                                    java.lang.String name)

getECParameterSpec

public static java.security.spec.ECParameterSpec getECParameterSpec(java.security.Provider p,
                                                                    int keySize)

getCurveName

public static java.lang.String getCurveName(java.security.Provider p,
                                            java.security.spec.ECParameterSpec spec)

equals

public static boolean equals(java.security.spec.ECParameterSpec spec1,
                             java.security.spec.ECParameterSpec spec2)

encodeSignature

public static byte[] encodeSignature(byte[] signature)
                              throws java.security.SignatureException

Throws:

java.security.SignatureException

decodeSignature

public static byte[] decodeSignature(byte[] sig)
                              throws java.security.SignatureException

Throws:

java.security.SignatureException

checkPrivateKey

public static java.security.interfaces.ECPrivateKey checkPrivateKey(java.security.interfaces.ECPrivateKey prv)
                                                             throws java.security.InvalidKeyException

Check an ECPrivateKey to make sure the scalar value is within the range of the order [1, n-1].

Parameters:

prv - the private key to be checked.

Returns:

the private key that was evaluated.

Throws:

java.security.InvalidKeyException - if the key's scalar value is not within the range 1 <= x < n where n is the order of the generator.

validatePublicKey

public static void validatePublicKey(java.security.spec.ECPoint point,
                                     java.security.spec.ECParameterSpec spec)
                              throws java.security.InvalidKeyException

Throws:

java.security.InvalidKeyException