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Java EllipticCurve类代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了Java中java.security.spec.EllipticCurve类的典型用法代码示例。如果您正苦于以下问题：Java EllipticCurve类的具体用法？Java EllipticCurve怎么用？Java EllipticCurve使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。



EllipticCurve类属于java.security.spec包，在下文中一共展示了EllipticCurve类的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Java代码示例。

示例1: convertSpec

import java.security.spec.EllipticCurve; //导入依赖的package包/类
public static ECParameterSpec convertSpec(
    EllipticCurve ellipticCurve,
    org.bouncycastle.jce.spec.ECParameterSpec spec)
{
    if (spec instanceof ECNamedCurveParameterSpec)
    {
        return new ECNamedCurveSpec(
            ((ECNamedCurveParameterSpec)spec).getName(),
            ellipticCurve,
            new ECPoint(
                spec.getG().getX().toBigInteger(),
                spec.getG().getY().toBigInteger()),
            spec.getN(),
            spec.getH());
    }
    else
    {
        return new ECParameterSpec(
            ellipticCurve,
            new ECPoint(
                spec.getG().getX().toBigInteger(),
                spec.getG().getY().toBigInteger()),
            spec.getN(),
            spec.getH().intValue());
    }
}
开发者ID:Appdome，项目名称:ipack，代码行数:27，代码来源:EC5Util.java


示例2: decodeTest

import java.security.spec.EllipticCurve; //导入依赖的package包/类
private void decodeTest()
{
    EllipticCurve curve = new EllipticCurve(
            new ECFieldFp(new BigInteger("6277101735386680763835789423207666416083908700390324961279")), // q
            new BigInteger("fffffffffffffffffffffffffffffffefffffffffffffffc", 16), // a
            new BigInteger("64210519e59c80e70fa7e9ab72243049feb8deecc146b9b1", 16)); // b

    ECPoint p = ECPointUtil.decodePoint(curve, Hex.decode("03188da80eb03090f67cbf20eb43a18800f4ff0afd82ff1012"));

    if (!p.getAffineX().equals(new BigInteger("188da80eb03090f67cbf20eb43a18800f4ff0afd82ff1012", 16)))
    {
        fail("x uncompressed incorrectly");
    }

    if (!p.getAffineY().equals(new BigInteger("7192b95ffc8da78631011ed6b24cdd573f977a11e794811", 16)))
    {
        fail("y uncompressed incorrectly");
    }
}
开发者ID:tsenger，项目名称:animamea，代码行数:20，代码来源:ECDSA5Test.java


示例3: encodeECParameterSpec

import java.security.spec.EllipticCurve; //导入依赖的package包/类
public static ECParameterSpec encodeECParameterSpec(EllipticCurveParameters params) {

        // Field
        final BigInteger pInt = new BigInteger(1, params.getP());
        final ECField field = new ECFieldFp(pInt);

        final BigInteger aInt = new BigInteger(1, params.getA());
        final BigInteger bInt = new BigInteger(1, params.getB());
        final EllipticCurve curve = new EllipticCurve(field, aInt, bInt);

        // Fixed Point G
        final BigInteger xInt = new BigInteger(1, params.getX());
        final BigInteger yInt = new BigInteger(1, params.getY());
        final ECPoint g = new ECPoint(xInt, yInt);

        // Order N
        final BigInteger nInt = new BigInteger(1, params.getN());

        return new ECParameterSpec(curve, g, nInt, params.getH());
    }
开发者ID:mDL-ILP，项目名称:mDL-ILP，代码行数:21，代码来源:EllipticCurveParameters.java


示例4: JCEECPrivateKey

import java.security.spec.EllipticCurve; //导入依赖的package包/类
public JCEECPrivateKey(
    String              algorithm,
    org.bouncycastle.jce.spec.ECPrivateKeySpec     spec)
{
    this.algorithm = algorithm;
    this.d = spec.getD();

    if (spec.getParams() != null) // can be null if implicitlyCA
    {
        ECCurve curve = spec.getParams().getCurve();
        EllipticCurve ellipticCurve;

        ellipticCurve = EC5Util.convertCurve(curve, spec.getParams().getSeed());

        this.ecSpec = EC5Util.convertSpec(ellipticCurve, spec.getParams());
    }
    else
    {
        this.ecSpec = null;
    }
}
开发者ID:Appdome，项目名称:ipack，代码行数:22，代码来源:JCEECPrivateKey.java


示例5: JCEECPublicKey

import java.security.spec.EllipticCurve; //导入依赖的package包/类
public JCEECPublicKey(
    String              algorithm,
    org.bouncycastle.jce.spec.ECPublicKeySpec     spec)
{
    this.algorithm = algorithm;
    this.q = spec.getQ();

    if (spec.getParams() != null) // can be null if implictlyCa
    {
        ECCurve curve = spec.getParams().getCurve();
        EllipticCurve ellipticCurve = EC5Util.convertCurve(curve, spec.getParams().getSeed());

        this.ecSpec = EC5Util.convertSpec(ellipticCurve, spec.getParams());
    }
    else
    {
        if (q.getCurve() == null)
        {
            org.bouncycastle.jce.spec.ECParameterSpec s = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa();

            q = s.getCurve().createPoint(q.getX().toBigInteger(), q.getY().toBigInteger(), false);
        }               
        this.ecSpec = null;
    }
}
开发者ID:Appdome，项目名称:ipack，代码行数:26，代码来源:JCEECPublicKey.java


示例6: convertCurve

import java.security.spec.EllipticCurve; //导入依赖的package包/类
private static ECCurve convertCurve(
    EllipticCurve ec)
{
    ECField field = ec.getField();
    BigInteger a = ec.getA();
    BigInteger b = ec.getB();

    if (field instanceof ECFieldFp)
    {
        return new ECCurve.Fp(((ECFieldFp)field).getP(), a, b);
    }
    else
    {
        throw new IllegalStateException("not implemented yet!!!");
    }
}
开发者ID:Appdome，项目名称:ipack，代码行数:17，代码来源:JcaPublicKeyConverter.java


示例7: BCDSTU4145PrivateKey

import java.security.spec.EllipticCurve; //导入依赖的package包/类
public BCDSTU4145PrivateKey(
    org.bouncycastle.jce.spec.ECPrivateKeySpec spec)
{
    this.d = spec.getD();

    if (spec.getParams() != null) // can be null if implicitlyCA
    {
        ECCurve curve = spec.getParams().getCurve();
        EllipticCurve ellipticCurve;

        ellipticCurve = EC5Util.convertCurve(curve, spec.getParams().getSeed());

        this.ecSpec = EC5Util.convertSpec(ellipticCurve, spec.getParams());
    }
    else
    {
        this.ecSpec = null;
    }
}
开发者ID:Appdome，项目名称:ipack，代码行数:20，代码来源:BCDSTU4145PrivateKey.java


示例8: BCDSTU4145PublicKey

import java.security.spec.EllipticCurve; //导入依赖的package包/类
public BCDSTU4145PublicKey(
    org.bouncycastle.jce.spec.ECPublicKeySpec spec)
{
    this.q = spec.getQ();

    if (spec.getParams() != null) // can be null if implictlyCa
    {
        ECCurve curve = spec.getParams().getCurve();
        EllipticCurve ellipticCurve = EC5Util.convertCurve(curve, spec.getParams().getSeed());

        this.ecSpec = EC5Util.convertSpec(ellipticCurve, spec.getParams());
    }
    else
    {
        if (q.getCurve() == null)
        {
            org.bouncycastle.jce.spec.ECParameterSpec s = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa();

            q = s.getCurve().createPoint(q.getX().toBigInteger(), q.getY().toBigInteger(), false);
        }
        this.ecSpec = null;
    }
}
开发者ID:Appdome，项目名称:ipack，代码行数:24，代码来源:BCDSTU4145PublicKey.java


示例9: BCECPrivateKey

import java.security.spec.EllipticCurve; //导入依赖的package包/类
public BCECPrivateKey(
    String algorithm,
    org.bouncycastle.jce.spec.ECPrivateKeySpec spec,
    ProviderConfiguration configuration)
{
    this.algorithm = algorithm;
    this.d = spec.getD();

    if (spec.getParams() != null) // can be null if implicitlyCA
    {
        ECCurve curve = spec.getParams().getCurve();
        EllipticCurve ellipticCurve;

        ellipticCurve = EC5Util.convertCurve(curve, spec.getParams().getSeed());

        this.ecSpec = EC5Util.convertSpec(ellipticCurve, spec.getParams());
    }
    else
    {
        this.ecSpec = null;
    }

    this.configuration = configuration;
}
开发者ID:Appdome，项目名称:ipack，代码行数:25，代码来源:BCECPrivateKey.java


示例10: BCECPublicKey

import java.security.spec.EllipticCurve; //导入依赖的package包/类
public BCECPublicKey(
    String algorithm,
    ECPublicKeyParameters params,
    ECParameterSpec spec,
    ProviderConfiguration configuration)
{
    ECDomainParameters      dp = params.getParameters();

    this.algorithm = algorithm;
    this.q = params.getQ();

    if (spec == null)
    {
        EllipticCurve ellipticCurve = EC5Util.convertCurve(dp.getCurve(), dp.getSeed());

        this.ecSpec = createSpec(ellipticCurve, dp);
    }
    else
    {
        this.ecSpec = spec;
    }

    this.configuration = configuration;
}
开发者ID:Appdome，项目名称:ipack，代码行数:25，代码来源:BCECPublicKey.java


示例11: convertCurve

import java.security.spec.EllipticCurve; //导入依赖的package包/类
public static ECCurve convertCurve(
    EllipticCurve ec)
{
    ECField field = ec.getField();
    BigInteger a = ec.getA();
    BigInteger b = ec.getB();

    if (field instanceof ECFieldFp)
    {
        return new ECCurve.Fp(((ECFieldFp)field).getP(), a, b);
    }
    else
    {
        ECFieldF2m fieldF2m = (ECFieldF2m)field;
        int m = fieldF2m.getM();
        int ks[] = ECUtil.convertMidTerms(fieldF2m.getMidTermsOfReductionPolynomial());
        return new ECCurve.F2m(m, ks[0], ks[1], ks[2], a, b); 
    }
}
开发者ID:Appdome，项目名称:ipack，代码行数:20，代码来源:EC5Util.java


示例12: BCECGOST3410PrivateKey

import java.security.spec.EllipticCurve; //导入依赖的package包/类
public BCECGOST3410PrivateKey(
    org.bouncycastle.jce.spec.ECPrivateKeySpec spec)
{
    this.d = spec.getD();

    if (spec.getParams() != null) // can be null if implicitlyCA
    {
        ECCurve curve = spec.getParams().getCurve();
        EllipticCurve ellipticCurve;

        ellipticCurve = EC5Util.convertCurve(curve, spec.getParams().getSeed());

        this.ecSpec = EC5Util.convertSpec(ellipticCurve, spec.getParams());
    }
    else
    {
        this.ecSpec = null;
    }
}
开发者ID:Appdome，项目名称:ipack，代码行数:20，代码来源:BCECGOST3410PrivateKey.java


示例13: BCECGOST3410PublicKey

import java.security.spec.EllipticCurve; //导入依赖的package包/类
public BCECGOST3410PublicKey(
    org.bouncycastle.jce.spec.ECPublicKeySpec spec)
{
    this.q = spec.getQ();

    if (spec.getParams() != null) // can be null if implictlyCa
    {
        ECCurve curve = spec.getParams().getCurve();
        EllipticCurve ellipticCurve = EC5Util.convertCurve(curve, spec.getParams().getSeed());

        this.ecSpec = EC5Util.convertSpec(ellipticCurve, spec.getParams());
    }
    else
    {
        if (q.getCurve() == null)
        {
            org.bouncycastle.jce.spec.ECParameterSpec s = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa();

            q = s.getCurve().createPoint(q.getX().toBigInteger(), q.getY().toBigInteger(), false);
        }               
        this.ecSpec = null;
    }
}
开发者ID:Appdome，项目名称:ipack，代码行数:24，代码来源:BCECGOST3410PublicKey.java


示例14: getCurveName

import java.security.spec.EllipticCurve; //导入依赖的package包/类
public static String getCurveName(ECParameterSpec spec)
    throws InvalidAlgorithmParameterException
{
    int curve_id;

    /* Ecc object doesn't need to be initialied before call */
    if (!(spec.getCurve().getField() instanceof ECFieldFp)) {
        throw new InvalidAlgorithmParameterException(
            "Currently only ECFieldFp fields supported");
    }
    ECFieldFp field = (ECFieldFp)spec.getCurve().getField();
    EllipticCurve curve = spec.getCurve();

    curve_id = wc_ecc_get_curve_id_from_params(
                field.getFieldSize(),
                field.getP().toByteArray(),
                curve.getA().toByteArray(),
                curve.getB().toByteArray(),
                spec.getOrder().toByteArray(),
                spec.getGenerator().getAffineX().toByteArray(),
                spec.getGenerator().getAffineY().toByteArray(),
                spec.getCofactor());

    return wc_ecc_get_curve_name_from_id(curve_id);
}
开发者ID:wolfSSL，项目名称:wolfcrypt-jni，代码行数:26，代码来源:Ecc.java


示例15: decodePoint

import java.security.spec.EllipticCurve; //导入依赖的package包/类
private static ECPoint decodePoint(byte[] data, EllipticCurve curve)
        throws IOException {
    if ((data.length == 0) || (data[0] != 4)) {
        throw new IOException("Only uncompressed point format " +
                              "supported");
    }
    // Per ANSI X9.62, an encoded point is a 1 byte type followed by
    // ceiling(log base 2 field-size / 8) bytes of x and the same of y.
    int n = (data.length - 1) / 2;
    if (n != ((curve.getField().getFieldSize() + 7) >> 3)) {
        throw new IOException("Point does not match field size");
    }

    byte[] xb = Arrays.copyOfRange(data, 1, 1 + n);
    byte[] yb = Arrays.copyOfRange(data, n + 1, n + 1 + n);

    return new ECPoint(new BigInteger(1, xb), new BigInteger(1, yb));
}
开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:19，代码来源:DOMKeyValue.java


示例16: mapNonceGMWithECDH

import java.security.spec.EllipticCurve; //导入依赖的package包/类
private static ECParameterSpec mapNonceGMWithECDH(final BigInteger nonceS,
		                                          final ECPoint sharedSecretPointH,
		                                          final ECParameterSpec params) {
	// D~ = (p, a, b, G~, n, h) where G~ = [s]G + H
	final ECPoint generator = params.getGenerator();
	final EllipticCurve curve = params.getCurve();
	final BigInteger a = curve.getA();
	final BigInteger b = curve.getB();
	final ECFieldFp field = (ECFieldFp)curve.getField();
	final BigInteger p = field.getP();
	final BigInteger order = params.getOrder();
	final int cofactor = params.getCofactor();
	final ECPoint ephemeralGenerator = add(multiply(nonceS, generator, params), sharedSecretPointH, params);
	if (!toBouncyCastleECPoint(ephemeralGenerator, params).isValid()) {
		LOGGER.warning("Se ha generado un punto invalido"); //$NON-NLS-1$
	}
	return new ECParameterSpec(new EllipticCurve(new ECFieldFp(p), a, b), ephemeralGenerator, order, cofactor);
}
开发者ID:MiFirma，项目名称:mi-firma-android，代码行数:19，代码来源:JseCryptoHelper.java


示例17: mapNonceGMWithECDH

import java.security.spec.EllipticCurve; //导入依赖的package包/类
private static ECParameterSpec mapNonceGMWithECDH(final BigInteger nonceS,
		                                          final ECPoint sharedSecretPointH,
		                                          final ECParameterSpec params) {
	// D~ = (p, a, b, G~, n, h) where G~ = [s]G + H
	final ECPoint generator = params.getGenerator();
	final EllipticCurve curve = params.getCurve();
	final BigInteger a = curve.getA();
	final BigInteger b = curve.getB();
	final ECFieldFp field = (ECFieldFp)curve.getField();
	final BigInteger p = field.getP();
	final BigInteger order = params.getOrder();
	final int cofactor = params.getCofactor();
	final ECPoint ephemeralGenerator = add(multiply(nonceS, generator, params), sharedSecretPointH, params);
	if (!toSpongyCastleECPoint(ephemeralGenerator, params).isValid()) {
		LOGGER.warning("Se ha generado un punto invalido"); //$NON-NLS-1$
	}
	return new ECParameterSpec(new EllipticCurve(new ECFieldFp(p), a, b), ephemeralGenerator, order, cofactor);
}
开发者ID:MiFirma，项目名称:mi-firma-android，代码行数:19，代码来源:JseCryptoHelper.java


示例18: CfcaCurve

import java.security.spec.EllipticCurve; //导入依赖的package包/类
public static ECParameterSpec CfcaCurve() {
	// 素数P
	BigInteger p = new BigInteger("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFF", 16);

	// 基于素数P的有限域
	ECFieldFp gfp = new ECFieldFp(p);

	// 在有限域上的椭圆曲线y2 = x3 + ax + b
	EllipticCurve ellipticCurve = new EllipticCurve(gfp,
			new BigInteger("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFC", 16),
			new BigInteger("28E9FA9E9D9F5E344D5A9E4BCF6509A7F39789F515AB8F92DDBCBD414D940E93", 16));

	// 基点G
	ECPoint G = new ECPoint(new BigInteger("32C4AE2C1F1981195F9904466A39C9948FE30BBFF2660BE1715A4589334C74C7", 16),
			new BigInteger("BC3736A2F4F6779C59BDCEE36B692153D0A9877CC62A474002DF32E52139F0A0", 16));

	// G的阶
	BigInteger n = new BigInteger("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFF7203DF6B21C6052B53BBF40939D54123", 16);

	// 设置基点
	ECParameterSpec ecParameterSpec = new ECParameterSpec(ellipticCurve, G, n, 1);
	return ecParameterSpec;
}
开发者ID:bubicn，项目名称:bubichain-sdk-java，代码行数:24，代码来源:Sm2keyCFCA.java


示例19: getECParameterSpec

import java.security.spec.EllipticCurve; //导入依赖的package包/类
ECParameterSpec getECParameterSpec() {
    final String curveName = NativeCrypto.EC_GROUP_get_curve_name(groupCtx);

    final byte[][] curveParams = NativeCrypto.EC_GROUP_get_curve(groupCtx);
    final BigInteger p = new BigInteger(curveParams[0]);
    final BigInteger a = new BigInteger(curveParams[1]);
    final BigInteger b = new BigInteger(curveParams[2]);

    final ECField field = new ECFieldFp(p);

    final EllipticCurve curve = new EllipticCurve(field, a, b);

    final OpenSSLECPointContext generatorCtx = new OpenSSLECPointContext(this,
            new NativeRef.EC_POINT(NativeCrypto.EC_GROUP_get_generator(groupCtx)));
    final ECPoint generator = generatorCtx.getECPoint();

    final BigInteger order = new BigInteger(NativeCrypto.EC_GROUP_get_order(groupCtx));
    final BigInteger cofactor = new BigInteger(NativeCrypto.EC_GROUP_get_cofactor(groupCtx));

    ECParameterSpec spec = new ECParameterSpec(curve, generator, order, cofactor.intValue());
    Platform.setCurveName(spec, curveName);
    return spec;
}
开发者ID:google，项目名称:conscrypt，代码行数:24，代码来源:OpenSSLECGroupContext.java


示例20: decodePoint

import java.security.spec.EllipticCurve; //导入依赖的package包/类
private static ECPoint decodePoint(byte[] data, EllipticCurve curve)
        throws IOException {
    if (data.length == 0 || data[0] != 4) {
        throw new IOException("Only uncompressed point format " +
                              "supported");
    }
    // Per ANSI X9.62, an encoded point is a 1 byte type followed by
    // ceiling(log base 2 field-size / 8) bytes of x and the same of y.
    int n = (data.length - 1) / 2;
    if (n != (curve.getField().getFieldSize() + 7) >> 3) {
        throw new IOException("Point does not match field size");
    }

    byte[] xb = Arrays.copyOfRange(data, 1, 1 + n);
    byte[] yb = Arrays.copyOfRange(data, n + 1, n + 1 + n);

    return new ECPoint(new BigInteger(1, xb), new BigInteger(1, yb));
}
开发者ID:Legostaev，项目名称:xmlsec-gost，代码行数:19，代码来源:DOMKeyValue.java



注：本文中的java.security.spec.EllipticCurve类示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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