当前位置: 首页>>代码示例>>Java>>正文

Java ECPublicKeySpec类代码示例

本文整理汇总了Java中org.bouncycastle.jce.spec.ECPublicKeySpec类的典型用法代码示例。如果您正苦于以下问题：Java ECPublicKeySpec类的具体用法？Java ECPublicKeySpec怎么用？Java ECPublicKeySpec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。


ECPublicKeySpec类属于org.bouncycastle.jce.spec包，在下文中一共展示了ECPublicKeySpec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: decodePublicKey

import org.bouncycastle.jce.spec.ECPublicKeySpec; //导入依赖的package包/类
/**
 * 
 * @param encodedPublicKey This is the (uncompressed) x,y-representation of a curve point on the P-256 NIST elliptic curve.
 * @return
 */
public static PublicKey decodePublicKey(byte[] encodedPublicKey) {
	PublicKey result = null;
	
	try {
		
		X9ECParameters curve = SECNamedCurves.getByName("secp256r1");
		ECPoint point = curve.getCurve().decodePoint(encodedPublicKey);
		
		result = KeyFactory.getInstance("ECDSA",new BouncyCastleProvider()).generatePublic(new ECPublicKeySpec(point, new ECParameterSpec(curve.getCurve(), curve.getG(), curve.getN(), curve.getH())));
		
	} catch (InvalidKeySpecException | NoSuchAlgorithmException e) {
			e.printStackTrace();
	}
	
	return result;
}
开发者ID:arietimmerman，项目名称:OpenAM-U2F，代码行数:22，代码来源:CryptoHelper.java

示例2: engineGeneratePublic

import org.bouncycastle.jce.spec.ECPublicKeySpec; //导入依赖的package包/类
protected PublicKey engineGeneratePublic(
    KeySpec    keySpec)
    throws InvalidKeySpecException
{
    if (keySpec instanceof X509EncodedKeySpec)
    {
        try
        {
            return JDKKeyFactory.createPublicKeyFromDERStream(
                        new ByteArrayInputStream(((X509EncodedKeySpec)keySpec).getEncoded()));
        }
        catch (Exception e)
        {
            throw new InvalidKeySpecException(e.toString());
        }
    }
    else if (keySpec instanceof ECPublicKeySpec)
    {
        return new JCEECPublicKey(algorithm, (ECPublicKeySpec)keySpec);
    }
	
    throw new InvalidKeySpecException("Unknown KeySpec type.");
}
开发者ID:thangbn，项目名称:Direct-File-Downloader，代码行数:24，代码来源:JDKKeyFactory.java

示例3: isSignatureValid

import org.bouncycastle.jce.spec.ECPublicKeySpec; //导入依赖的package包/类
@Override
public boolean isSignatureValid(byte[] data, byte[] signature, Pubkey pubkey) {
    try {
        ECParameterSpec spec = new ECParameterSpec(
            EC_CURVE_PARAMETERS.getCurve(),
            EC_CURVE_PARAMETERS.getG(),
            EC_CURVE_PARAMETERS.getN(),
            EC_CURVE_PARAMETERS.getH(),
            EC_CURVE_PARAMETERS.getSeed()
        );

        ECPoint Q = keyToPoint(pubkey.getSigningKey());
        KeySpec keySpec = new ECPublicKeySpec(Q, spec);
        PublicKey publicKey = KeyFactory.getInstance(ALGORITHM_ECDSA, provider).generatePublic(keySpec);

        Signature sig = Signature.getInstance(ALGORITHM_ECDSA, provider);
        sig.initVerify(publicKey);
        sig.update(data);
        return sig.verify(signature);
    } catch (GeneralSecurityException e) {
        throw new ApplicationException(e);
    }
}
开发者ID:Dissem，项目名称:Jabit，代码行数:24，代码来源:BouncyCryptography.java

示例4: decodePublicKey

import org.bouncycastle.jce.spec.ECPublicKeySpec; //导入依赖的package包/类
@Override
 public PublicKey decodePublicKey(byte[] encodedPublicKey) throws SignatureException {
         X9ECParameters curve = SECNamedCurves.getByName("secp256r1");
         ECPoint point = curve.getCurve().decodePoint(encodedPublicKey);

         try {
	return KeyFactory.getInstance("ECDSA").generatePublic(
	        new ECPublicKeySpec(point,
	                new ECParameterSpec(
	                        curve.getCurve(),
	                        curve.getG(),
	                        curve.getN(),
	                        curve.getH()
	                )
	        )
	);
} catch (GeneralSecurityException ex) {
	throw new SignatureException(ex);
}
 }
开发者ID:GluuFederation，项目名称:oxAuth，代码行数:21，代码来源:SHA256withECDSASignatureVerification.java

示例5: BCECPublicKey

import org.bouncycastle.jce.spec.ECPublicKeySpec; //导入依赖的package包/类
public BCECPublicKey(
    String              algorithm,
    ECPublicKeySpec     spec,
    ProviderConfiguration configuration)
{
    this.algorithm = algorithm;
    this.q = spec.getQ();
    this.configuration = configuration;

    if (spec.getParams() != null)
    {
        this.ecSpec = 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:credentials，项目名称:irma_future_id，代码行数:25，代码来源:BCECPublicKey.java

示例6: BCECGOST3410PublicKey

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

    if (spec.getParams() != null)
    {
        this.ecSpec = 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:credentials，项目名称:irma_future_id，代码行数:21，代码来源:BCECGOST3410PublicKey.java

示例7: engineGeneratePublic

import org.bouncycastle.jce.spec.ECPublicKeySpec; //导入依赖的package包/类
protected PublicKey engineGeneratePublic(
    KeySpec keySpec)
    throws InvalidKeySpecException
{
    if (keySpec instanceof ECPublicKeySpec)
    {
        return new BCDSTU4145PublicKey((ECPublicKeySpec)keySpec);
    }
    else if (keySpec instanceof java.security.spec.ECPublicKeySpec)
    {
        return new BCDSTU4145PublicKey((java.security.spec.ECPublicKeySpec)keySpec);
    }

    return super.engineGeneratePublic(keySpec);
}
开发者ID:Appdome，项目名称:ipack，代码行数:16，代码来源:KeyFactorySpi.java

示例8: engineGeneratePublic

import org.bouncycastle.jce.spec.ECPublicKeySpec; //导入依赖的package包/类
protected PublicKey engineGeneratePublic(
    KeySpec keySpec)
    throws InvalidKeySpecException
{
    if (keySpec instanceof ECPublicKeySpec)
    {
        return new BCECPublicKey(algorithm, (ECPublicKeySpec)keySpec, configuration);
    }
    else if (keySpec instanceof java.security.spec.ECPublicKeySpec)
    {
        return new BCECPublicKey(algorithm, (java.security.spec.ECPublicKeySpec)keySpec, configuration);
    }

    return super.engineGeneratePublic(keySpec);
}
开发者ID:Appdome，项目名称:ipack，代码行数:16，代码来源:KeyFactorySpi.java

示例9: engineGeneratePublic

import org.bouncycastle.jce.spec.ECPublicKeySpec; //导入依赖的package包/类
protected PublicKey engineGeneratePublic(
    KeySpec keySpec)
    throws InvalidKeySpecException
{
    if (keySpec instanceof ECPublicKeySpec)
    {
        return new BCECGOST3410PublicKey((ECPublicKeySpec)keySpec);
    }
    else if (keySpec instanceof java.security.spec.ECPublicKeySpec)
    {
        return new BCECGOST3410PublicKey((java.security.spec.ECPublicKeySpec)keySpec);
    }

    return super.engineGeneratePublic(keySpec);
}
开发者ID:Appdome，项目名称:ipack，代码行数:16，代码来源:KeyFactorySpi.java

示例10: getECPublicKey

import org.bouncycastle.jce.spec.ECPublicKeySpec; //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11: JCEECPublicKey

import org.bouncycastle.jce.spec.ECPublicKeySpec; //导入依赖的package包/类
JCEECPublicKey(
    String              algorithm,
    ECPublicKeySpec     spec)
{
    this.algorithm = algorithm;
    this.q = spec.getQ();
    this.ecSpec = spec.getParams();
}
开发者ID:thangbn，项目名称:Direct-File-Downloader，代码行数:9，代码来源:JCEECPublicKey.java

示例12: loadPublicKey

import org.bouncycastle.jce.spec.ECPublicKeySpec; //导入依赖的package包/类
/**
 * Loads and returns the elliptic-curve public key from the data byte array.
 * @param data
 * @return
 * @throws NoSuchAlgorithmException
 * @throws NoSuchProviderException
 * @throws InvalidKeySpecException
 */
public static ECPublicKey loadPublicKey(byte[] data) throws NoSuchAlgorithmException, NoSuchProviderException, InvalidKeySpecException
{
	X9ECParameters params = CustomNamedCurves.getByName("curve25519");
	ECParameterSpec ecParameterSpec = new ECParameterSpec(params.getCurve(), params.getG(), params.getN(), params.getH(), params.getSeed());

	ECPublicKeySpec publicKey = new ECPublicKeySpec(ecParameterSpec.getCurve().decodePoint(data), ecParameterSpec);
	KeyFactory kf = KeyFactory.getInstance("ECDH", "BC");
	return (ECPublicKey) kf.generatePublic(publicKey);
}
开发者ID:martinwithaar，项目名称:Encryptor4j，代码行数:18，代码来源:ECDHExportTest.java

示例13: loadPublicKey

import org.bouncycastle.jce.spec.ECPublicKeySpec; //导入依赖的package包/类
/**
 * Load the public key from a URL-safe base64 encoded string. Takes into
 * account the different encodings, including point compression.
 *
 * @param encodedPublicKey
 */
public static PublicKey loadPublicKey(String encodedPublicKey) throws NoSuchProviderException, NoSuchAlgorithmException, InvalidKeySpecException {
    byte[] decodedPublicKey = base64Decode(encodedPublicKey);

    KeyFactory kf = KeyFactory.getInstance("ECDH", BouncyCastleProvider.PROVIDER_NAME);

    // prime256v1 is NIST P-256
    ECNamedCurveParameterSpec ecSpec = ECNamedCurveTable.getParameterSpec("prime256v1");
    ECPoint point = ecSpec.getCurve().decodePoint(decodedPublicKey);
    ECPublicKeySpec pubSpec = new ECPublicKeySpec(point, ecSpec);

    return kf.generatePublic(pubSpec);
}
开发者ID:web-push-libs，项目名称:webpush-java，代码行数:19，代码来源:Utils.java

示例14: testECNR239bitPrime

import org.bouncycastle.jce.spec.ECPublicKeySpec; //导入依赖的package包/类
/**
 * X9.62 - 1998,<br>
 * J.3.2, Page 155, ECDSA over the field Fp<br>
 * an example with 239 bit prime
 */
private void testECNR239bitPrime()
    throws Exception
{
    BigInteger r = new BigInteger("308636143175167811492623515537541734843573549327605293463169625072911693");
    BigInteger s = new BigInteger("852401710738814635664888632022555967400445256405412579597015412971797143");

    byte[] kData = BigIntegers.asUnsignedByteArray(new BigInteger("700000017569056646655505781757157107570501575775705779575555657156756655"));
    
    SecureRandom    k = new FixedSecureRandom(kData);

    ECCurve curve = new ECCurve.Fp(
        new BigInteger("883423532389192164791648750360308885314476597252960362792450860609699839"), // q
        new BigInteger("7fffffffffffffffffffffff7fffffffffff8000000000007ffffffffffc", 16), // a
        new BigInteger("6b016c3bdcf18941d0d654921475ca71a9db2fb27d1d37796185c2942c0a", 16)); // b

    ECParameterSpec spec = new ECParameterSpec(
        curve,
        curve.decodePoint(Hex.decode("020ffa963cdca8816ccc33b8642bedf905c3d358573d3f27fbbd3b3cb9aaaf")), // G
        new BigInteger("883423532389192164791648750360308884807550341691627752275345424702807307")); // n
    

    ECPrivateKeySpec priKey = new ECPrivateKeySpec(
        new BigInteger("876300101507107567501066130761671078357010671067781776716671676178726717"), // d
        spec);

    ECPublicKeySpec pubKey = new ECPublicKeySpec(
        curve.decodePoint(Hex.decode("025b6dc53bc61a2548ffb0f671472de6c9521a9d2d2534e65abfcbd5fe0c70")), // Q
        spec);

    Signature           sgr = Signature.getInstance("SHA1withECNR", "BC");
    KeyFactory          f = KeyFactory.getInstance("ECDSA", "BC");

    byte[] message = new byte[] { (byte)'a', (byte)'b', (byte)'c' };
    
    checkSignature(239, priKey, pubKey, sgr, k, message, r, s);
}
开发者ID:NoYouShutup，项目名称:CryptMeme，代码行数:42，代码来源:ECNRTest.java

示例15: testECNR192bitPrime

import org.bouncycastle.jce.spec.ECPublicKeySpec; //导入依赖的package包/类
/**
 * X9.62 - 1998,<br>
 * Page 104-105, ECDSA over the field Fp<br>
 * an example with 192 bit prime
 */
private void testECNR192bitPrime()
    throws Exception
{
    BigInteger r  = new BigInteger("2474388605162950674935076940284692598330235697454145648371");
    BigInteger s  = new BigInteger("2997192822503471356158280167065034437828486078932532073836");

    byte[] kData = BigIntegers.asUnsignedByteArray(new BigInteger("dcc5d1f1020906df2782360d36b2de7a17ece37d503784af", 16));
    
    SecureRandom    k = new FixedSecureRandom(kData);

    ECCurve.Fp curve = new ECCurve.Fp(
        new BigInteger("6277101735386680763835789423207666416083908700390324961279"), // q (or p)
        new BigInteger("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFC", 16),   // a
        new BigInteger("64210519E59C80E70FA7E9AB72243049FEB8DEECC146B9B1", 16));  // b
    
    ECParameterSpec spec = new ECParameterSpec(
        curve,
        curve.decodePoint(Hex.decode("03188DA80EB03090F67CBF20EB43A18800F4FF0AFD82FF1012")), // G
        new BigInteger("6277101735386680763835789423176059013767194773182842284081")); // n
    

    ECPrivateKeySpec priKey = new ECPrivateKeySpec(
        new BigInteger("651056770906015076056810763456358567190100156695615665659"), // d
        spec);

    ECPublicKeySpec pubKey = new ECPublicKeySpec(
        curve.decodePoint(Hex.decode("0262B12D60690CDCF330BABAB6E69763B471F994DD702D16A5")), // Q
        spec);

    Signature           sgr = Signature.getInstance("SHA1withECNR", "BC");
    KeyFactory          f = KeyFactory.getInstance("ECDSA", "BC");

    byte[] message = new byte[] { (byte)'a', (byte)'b', (byte)'c' };
    
    checkSignature(192, priKey, pubKey, sgr, k, message, r, s);
}
开发者ID:NoYouShutup，项目名称:CryptMeme，代码行数:42，代码来源:ECNRTest.java


注：本文中的org.bouncycastle.jce.spec.ECPublicKeySpec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。