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Java ECNamedCurveParameterSpec类代码示例

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


ECNamedCurveParameterSpec类属于org.bouncycastle.jce.spec包，在下文中一共展示了ECNamedCurveParameterSpec类的15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，您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: convertSpec

import org.bouncycastle.jce.spec.ECNamedCurveParameterSpec; //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: generateECKeypair

import org.bouncycastle.jce.spec.ECNamedCurveParameterSpec; //导入依赖的package包/类
public static KeyPair generateECKeypair(ASN1ObjectIdentifier curveId, SecureRandom random)
        throws NoSuchAlgorithmException, NoSuchProviderException,
            InvalidAlgorithmParameterException {
    ParamUtil.requireNonNull("curveId", curveId);

    ECNamedCurveParameterSpec spec = ECNamedCurveTable.getParameterSpec(curveId.getId());
    KeyPairGenerator kpGen = getKeyPairGenerator("EC");
    synchronized (kpGen) {
        if (random == null) {
            kpGen.initialize(spec);
        } else {
            kpGen.initialize(spec, random);
        }
        return kpGen.generateKeyPair();
    }
}
开发者ID:xipki，项目名称:xitk，代码行数:17，代码来源:KeyUtil.java

示例3: getParameterSpec

import org.bouncycastle.jce.spec.ECNamedCurveParameterSpec; //导入依赖的package包/类
/**
 * return a parameter spec representing the passed in named
 * curve. The routine returns null if the curve is not present.
 * 
 * @param name the name of the curve requested
 * @return a parameter spec for the curve, null if it is not available.
 */
public static ECNamedCurveParameterSpec getParameterSpec(
    String  name)
{
    X9ECParameters  ecP = X962NamedCurves.getByName(name);
    if (ecP == null)
    {
        return null;
    }

    return new ECNamedCurveParameterSpec(
                                    name,
                                    ecP.getCurve(),
                                    ecP.getG(),
                                    ecP.getN(),
                                    ecP.getH(),
                                    ecP.getSeed());

}
开发者ID:thangbn，项目名称:Direct-File-Downloader，代码行数:26，代码来源:ECNamedCurveTable.java

示例4: getPubKeyFromCurve

import org.bouncycastle.jce.spec.ECNamedCurveParameterSpec; //导入依赖的package包/类
/**
 * Decode based on X, Y 32 byte integers
 * 
 * @param pubKey
 * @param curveName
 *            - Example secp256r1
 * @return
 * @throws InvalidKeySpecException
 * @throws NoSuchAlgorithmException
 * @throws NoSuchProviderException
 */
public static PublicKey getPubKeyFromCurve(byte[] pubKey, String curveName)
		throws InvalidKeySpecException, NoSuchAlgorithmException,
		NoSuchProviderException {

	ECNamedCurveParameterSpec spec = ECNamedCurveTable
			.getParameterSpec(curveName);
	KeyFactory kf = KeyFactory.getInstance("ECDSA",
			new BouncyCastleProvider());
	ECNamedCurveSpec params = new ECNamedCurveSpec(curveName,
			spec.getCurve(), spec.getG(), spec.getN());
	ECPoint point = ECPointUtil.decodePoint(params.getCurve(), pubKey);
	ECPublicKeySpec pubKeySpec = new ECPublicKeySpec(point, params);
	ECPublicKey pk = (ECPublicKey) kf.generatePublic(pubKeySpec);
	return pk;
}
开发者ID:zsavvas，项目名称:ReCRED_FIDO_UAF_OIDC，代码行数:27，代码来源:KeyCodec.java

示例5: convertSpec

import org.bouncycastle.jce.spec.ECNamedCurveParameterSpec; //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().getAffineXCoord().toBigInteger(),
                spec.getG().getAffineYCoord().toBigInteger()),
            spec.getN(),
            spec.getH());
    }
    else
    {
        return new ECParameterSpec(
            ellipticCurve,
            new ECPoint(
                spec.getG().getAffineXCoord().toBigInteger(),
                spec.getG().getAffineYCoord().toBigInteger()),
            spec.getN(),
            spec.getH().intValue());
    }
}
开发者ID:thedrummeraki，项目名称:Aki-SSL，代码行数:27，代码来源:EC5Util.java

示例6: verifySignature

import org.bouncycastle.jce.spec.ECNamedCurveParameterSpec; //导入依赖的package包/类
public static boolean verifySignature(byte[] sigR, byte sigS[], byte[] publicKey, byte[] message) {
  try {
    Security.addProvider(new BouncyCastleProvider());
    ECNamedCurveParameterSpec spec = ECNamedCurveTable.getParameterSpec(SECP256K1);
    ECDomainParameters domain = new ECDomainParameters(spec.getCurve(), spec.getG(), spec.getN());
    ECPublicKeyParameters publicKeyParams =
        new ECPublicKeyParameters(spec.getCurve().decodePoint(publicKey), domain);

    ECDSASigner signer = new ECDSASigner();
    signer.init(false, publicKeyParams);
    return signer.verifySignature(message, new BigInteger(1, sigR), new BigInteger(1, sigS));
  } catch (Exception e) {
    LOGGER.error(null, e);
    return false;
  }
}
开发者ID:Braveno，项目名称:cosigner，代码行数:17，代码来源:Secp256k1.java

示例7: generateSharedSecret

import org.bouncycastle.jce.spec.ECNamedCurveParameterSpec; //导入依赖的package包/类
/**
 * Generate a shared AES key using ECDH.
 */
public static byte[] generateSharedSecret(byte[] privateKey, byte[] publicKey) {
  try {
    ECNamedCurveParameterSpec spec = ECNamedCurveTable.getParameterSpec(SECP256K1);
    ECDomainParameters domain =
        new ECDomainParameters(spec.getCurve(), spec.getG(), spec.getN(), spec.getH());
    ECPublicKeyParameters pubKey =
        new ECPublicKeyParameters(spec.getCurve().decodePoint(publicKey), domain);
    ECPrivateKeyParameters prvkey =
        new ECPrivateKeyParameters(new BigInteger(1, privateKey), domain);

    ECDHBasicAgreement agreement = new ECDHBasicAgreement();
    agreement.init(prvkey);
    byte[] password = agreement.calculateAgreement(pubKey).toByteArray();

    return Aes.generateKey(ByteUtilities.toHexString(password), password);

  } catch (Exception e) {
    LOGGER.error(null, e);
    return new byte[0];
  }
}
开发者ID:Braveno，项目名称:cosigner，代码行数:25，代码来源:Secp256k1.java

示例8: toJcaPrivateKey

import org.bouncycastle.jce.spec.ECNamedCurveParameterSpec; //导入依赖的package包/类
private static ECPrivateKey toJcaPrivateKey(org.bouncycastle.asn1.sec.ECPrivateKey ecPrivateKey)
        throws GeneralSecurityException {
    String curveName = null;
    ASN1ObjectIdentifier curveId = (ASN1ObjectIdentifier) ecPrivateKey.getParameters();
    if (curveId.equals(secp224r1_OID)) {
        curveName = "secp224r1";
    } else if (curveId.equals(prime256v1_OID)) {
        curveName = "prime256v1";
    } else if (curveId.equals(secp384r1_OID)) {
        curveName = "secp384r1";
    } else if (curveId.equals(secp521r1_OID)) {
        curveName = "secp521r1";
    } else {
        throw new IllegalStateException("Unknown curve OID: " + curveId);
    }

    ECNamedCurveParameterSpec sp = ECNamedCurveTable.getParameterSpec(curveName);
    ECParameterSpec params = new ECNamedCurveSpec(sp.getName(), sp.getCurve(), sp.getG(),
            sp.getN(), sp.getH());

    ECPrivateKeySpec pkSpec = new ECPrivateKeySpec(ecPrivateKey.getKey(), params);
    KeyFactory kf = KeyFactory.getInstance("EC");
    ECPrivateKey privateKey = (ECPrivateKey) kf.generatePrivate(pkSpec);

    return privateKey;
}
开发者ID:nelenkov，项目名称:keystore-decryptor，代码行数:27，代码来源:SoftKeymasterBlob.java

示例9: generateECKeys

import org.bouncycastle.jce.spec.ECNamedCurveParameterSpec; //导入依赖的package包/类
private static KeyPair generateECKeys() {
	try {
		ECNamedCurveParameterSpec parameterSpec = ECNamedCurveTable
				.getParameterSpec("secp256k1");
		KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance(
				"ECDH", BouncyCastleProvider.PROVIDER_NAME);

		keyPairGenerator.initialize(parameterSpec);

		KeyPair keyPair = keyPairGenerator.generateKeyPair();
		System.out.println("Private key length: "
				+ keyPair.getPrivate().getEncoded().length);
		System.out.println("Public key length: "
				+ keyPair.getPublic().getEncoded().length);
		return keyPair;
	} catch (NoSuchAlgorithmException | InvalidAlgorithmParameterException
			| NoSuchProviderException e) {
		e.printStackTrace();
		return null;
	}
}
开发者ID:y12studio，项目名称:bkbc-tools，代码行数:22，代码来源:HelloECDH2.java

示例10: createPublicEncryptionKey

import org.bouncycastle.jce.spec.ECNamedCurveParameterSpec; //导入依赖的package包/类
/**
 * Creates a ECPublicKey with the given coordinates. The key will have valid
 * parameters.
 * 
 * @param x
 *            The x coordinate on the curve.
 * @param y
 *            The y coordinate on the curve.
 * @return A ECPublicKey with the given coordinates.
 */
public ECPublicKey createPublicEncryptionKey(BigInteger x, BigInteger y) {
	try {
		java.security.spec.ECPoint w = new java.security.spec.ECPoint(x, y);
		ECNamedCurveParameterSpec params = ECNamedCurveTable.getParameterSpec("secp256k1");
		KeyFactory fact = KeyFactory.getInstance("ECDSA", "BC");
		ECCurve curve = params.getCurve();
		java.security.spec.EllipticCurve ellipticCurve = EC5Util.convertCurve(curve, params.getSeed());
		java.security.spec.ECParameterSpec params2 = EC5Util.convertSpec(ellipticCurve, params);
		java.security.spec.ECPublicKeySpec keySpec = new java.security.spec.ECPublicKeySpec(w, params2);
		return (ECPublicKey) fact.generatePublic(keySpec);
	} catch (InvalidKeySpecException | NoSuchAlgorithmException | NoSuchProviderException e) {
		LOG.log(Level.SEVERE, "Could not create public key.", e);
		return null;
	}
}
开发者ID:ISibboI，项目名称:JBitmessage，代码行数:26，代码来源:CryptManager.java

示例11: getParameterSpec

import org.bouncycastle.jce.spec.ECNamedCurveParameterSpec; //导入依赖的package包/类
/**
 * return a parameter spec representing the passed in named
 * curve. The routine returns null if the curve is not present.
 * 
 * @param name the name of the curve requested
 * @return a parameter spec for the curve, null if it is not available.
 */
public static ECNamedCurveParameterSpec getParameterSpec(
    String  name)
{
    ECDomainParameters  ecP = ECGOST3410NamedCurves.getByName(name);
    if (ecP == null)
    {
        try
        {
            ecP = ECGOST3410NamedCurves.getByOID(new ASN1ObjectIdentifier(name));
        }
        catch (IllegalArgumentException e)
        {
            return null; // not an oid.
        }
    }
    
    if (ecP == null)
    {
        return null;
    }

    return new ECNamedCurveParameterSpec(
                                    name,
                                    ecP.getCurve(),
                                    ecP.getG(),
                                    ecP.getN(),
                                    ecP.getH(),
                                    ecP.getSeed());
}
开发者ID:Appdome，项目名称:ipack，代码行数:37，代码来源:ECGOST3410NamedCurveTable.java

示例12: getECPublicKey

import org.bouncycastle.jce.spec.ECNamedCurveParameterSpec; //导入依赖的package包/类
public static PublicKey getECPublicKey(java.security.spec.ECPoint w, String stdCurveName) throws NoSuchAlgorithmException, InvalidKeySpecException {
  ECNamedCurveParameterSpec parameterSpec = ECNamedCurveTable.getParameterSpec(stdCurveName);
  java.security.spec.ECParameterSpec params = new ECNamedCurveSpec(parameterSpec.getName(), parameterSpec.getCurve(),
          parameterSpec.getG(), parameterSpec.getN(), parameterSpec.getH(), parameterSpec.getSeed());
  KeySpec keySpec = new java.security.spec.ECPublicKeySpec(w, params);
  KeyFactory keyFactory = KeyFactory.getInstance("EC");
  return keyFactory.generatePublic(keySpec);
}
开发者ID:google，项目名称:webauthndemo，代码行数:9，代码来源:Crypto.java

示例13: getPrivKeyFromCurve

import org.bouncycastle.jce.spec.ECNamedCurveParameterSpec; //导入依赖的package包/类
/**
 * Decode based on d - 32 byte integer
 * 
 * @param privKey
 * @param curveName
 *            - Example secp256r1
 * @return
 * @throws InvalidKeySpecException
 * @throws NoSuchAlgorithmException
 * @throws NoSuchProviderException
 */
public static PrivateKey getPrivKeyFromCurve(byte[] privKey,
		String curveName) throws InvalidKeySpecException,
		NoSuchAlgorithmException, NoSuchProviderException {

	ECNamedCurveParameterSpec spec = ECNamedCurveTable
			.getParameterSpec(curveName);
	KeyFactory kf = KeyFactory.getInstance("ECDSA",
			new BouncyCastleProvider());
	ECNamedCurveSpec params = new ECNamedCurveSpec(curveName,
			spec.getCurve(), spec.getG(), spec.getN());
	ECPrivateKeySpec priKey = new ECPrivateKeySpec(new BigInteger(privKey), // d
			params);
	return kf.generatePrivate(priKey);
}
开发者ID:zsavvas，项目名称:ReCRED_FIDO_UAF_OIDC，代码行数:26，代码来源:KeyCodec.java

示例14: getEncoded

import org.bouncycastle.jce.spec.ECNamedCurveParameterSpec; //导入依赖的package包/类
public byte[] getEncoded()
{
    ByteArrayOutputStream   bOut = new ByteArrayOutputStream();
    DEROutputStream         dOut = new DEROutputStream(bOut);
    X962Parameters          params = null;

    if (ecSpec instanceof ECNamedCurveParameterSpec)
    {
        params = new X962Parameters(X962NamedCurves.getOID(((ECNamedCurveParameterSpec)ecSpec).getName()));
    }
    else
    {
        X9ECParameters          ecP = new X9ECParameters(
                                        ecSpec.getCurve(),
                                        ecSpec.getG(),
                                        ecSpec.getN(),
                                        ecSpec.getH(),
                                        ecSpec.getSeed());
        params = new X962Parameters(ecP);
    }

    ASN1OctetString    p = (ASN1OctetString)(new X9ECPoint(this.getQ()).getDERObject());

    SubjectPublicKeyInfo info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.id_ecPublicKey, params.getDERObject()), p.getOctets());

    try
    {
        dOut.writeObject(info);
        dOut.close();
    }
    catch (IOException e)
    {
        throw new RuntimeException("Error encoding EC public key");
    }

    return bOut.toByteArray();
}
开发者ID:thangbn，项目名称:Direct-File-Downloader，代码行数:38，代码来源:JCEECPublicKey.java

示例15: readECParameters

import org.bouncycastle.jce.spec.ECNamedCurveParameterSpec; //导入依赖的package包/类
private ECNamedCurveParameterSpec readECParameters(String endMarker)
    throws IOException
{
    DERObjectIdentifier oid = (DERObjectIdentifier)ASN1Object.fromByteArray(readBytes(endMarker));

    return ECNamedCurveTable.getParameterSpec(oid.getId());
}
开发者ID:thangbn，项目名称:Direct-File-Downloader，代码行数:8，代码来源:PEMReader.java


注：本文中的org.bouncycastle.jce.spec.ECNamedCurveParameterSpec类示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，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。