Java 类org.bouncycastle.crypto.engines.RSABlindingEngine 实例源码

项目：gwt-crypto 文件：PSSBlindTest.java

private void testSig(
    int                 id,
    RSAKeyParameters    pub,
    RSAKeyParameters    prv,
    byte[]              slt,
    byte[]              msg,
    byte[]              sig)
    throws Exception
{
    RSABlindingFactorGenerator blindFactorGen = new RSABlindingFactorGenerator();
    RSABlindingEngine blindingEngine = new RSABlindingEngine();
    PSSSigner blindSigner = new PSSSigner(blindingEngine, new SHA1Digest(), 20);
    PSSSigner signer = new PSSSigner(new RSAEngine(), new SHA1Digest(), 20);

    blindFactorGen.init(pub);

    BigInteger blindFactor = blindFactorGen.generateBlindingFactor();
    RSABlindingParameters params = new RSABlindingParameters(pub, blindFactor);

    // generate a blind signature
    blindSigner.init(true, new ParametersWithRandom(params, new FixedRandom(slt)));

    blindSigner.update(msg, 0, msg.length);

    byte[] blindedData = blindSigner.generateSignature();

    RSAEngine signerEngine = new RSAEngine();

    signerEngine.init(true, prv);

    byte[] blindedSig = signerEngine.processBlock(blindedData, 0, blindedData.length);

    // unblind the signature
    blindingEngine.init(false, params);

    byte[] s = blindingEngine.processBlock(blindedSig, 0, blindedSig.length);

    //signature verification
    if (!areEqual(s, sig))
    {
        fail("test " + id + " failed generation");
    }

    //verify signature with PSSSigner
    signer.init(false, pub);
    signer.update(msg, 0, msg.length);

    if (!signer.verifySignature(s))
    {
        fail("test " + id + " failed PSSSigner verification");
    }
}

项目：easy-vote 文件：CriptoUtils.java

/**
 * Unblinds a blinded text with a blinding factor and the respective used public key
 * @param key   The public key previously used to generate the blinding factor and to blind the text
 * @param factor    The supposedly private blinding factor
 * @param msg   The blinded text
 * @return  The unblinded text
 */
public static byte[] unblind(CipherParameters key, BigInteger factor, byte[] msg) {
    /*
     * Once again notice the usage of a RSABlindingEngine and respective Parameters
     */
    RSABlindingEngine eng = new RSABlindingEngine();
    RSABlindingParameters params = new RSABlindingParameters((RSAKeyParameters) key,factor);
    eng.init(false, params);
    /*
     * Another odd method. It returns the unblinded text.
     */
    return eng.processBlock(msg, 0, msg.length);
}

项目：gwt-crypto 文件：PSSBlindTest.java

private boolean isProcessingOkay(
    RSAKeyParameters    pub,
    RSAKeyParameters    prv,
    byte[]              data,
    SecureRandom        random)
    throws Exception
{
    RSABlindingFactorGenerator blindFactorGen = new RSABlindingFactorGenerator();
    RSABlindingEngine blindingEngine = new RSABlindingEngine();
    PSSSigner blindSigner = new PSSSigner(blindingEngine, new SHA1Digest(), 20);
    PSSSigner pssEng = new PSSSigner(new RSAEngine(), new SHA1Digest(), 20);

    random.nextBytes(data);

    blindFactorGen.init(pub);

    BigInteger blindFactor = blindFactorGen.generateBlindingFactor();
    RSABlindingParameters params = new RSABlindingParameters(pub, blindFactor);

    // generate a blind signature
    blindSigner.init(true, new ParametersWithRandom(params, random));

    blindSigner.update(data, 0, data.length);

    byte[] blindedData = blindSigner.generateSignature();

    RSAEngine signerEngine = new RSAEngine();

    signerEngine.init(true, prv);

    byte[] blindedSig = signerEngine.processBlock(blindedData, 0, blindedData.length);

    // unblind the signature
    blindingEngine.init(false, params);

    byte[] s = blindingEngine.processBlock(blindedSig, 0, blindedSig.length);

    //verify signature with PSSSigner
    pssEng.init(false, pub);
    pssEng.update(data, 0, data.length);

    return pssEng.verifySignature(s);
}

项目：irma_future_id 文件：PSSBlindTest.java

private void testSig(
    int                 id,
    RSAKeyParameters    pub,
    RSAKeyParameters    prv,
    byte[]              slt,
    byte[]              msg,
    byte[]              sig)
    throws Exception
{
    RSABlindingFactorGenerator blindFactorGen = new RSABlindingFactorGenerator();
    RSABlindingEngine blindingEngine = new RSABlindingEngine();
    PSSSigner blindSigner = new PSSSigner(blindingEngine, new SHA1Digest(), 20);
    PSSSigner signer = new PSSSigner(new RSAEngine(), new SHA1Digest(), 20);

    blindFactorGen.init(pub);

    BigInteger blindFactor = blindFactorGen.generateBlindingFactor();
    RSABlindingParameters params = new RSABlindingParameters(pub, blindFactor);

    // generate a blind signature
    blindSigner.init(true, new ParametersWithRandom(params, new FixedRandom(slt)));

    blindSigner.update(msg, 0, msg.length);

    byte[] blindedData = blindSigner.generateSignature();

    RSAEngine signerEngine = new RSAEngine();

    signerEngine.init(true, prv);

    byte[] blindedSig = signerEngine.processBlock(blindedData, 0, blindedData.length);

    // unblind the signature
    blindingEngine.init(false, params);

    byte[] s = blindingEngine.processBlock(blindedSig, 0, blindedSig.length);

    //signature verification
    if (!areEqual(s, sig))
    {
        fail("test " + id + " failed generation");
    }

    //verify signature with PSSSigner
    signer.init(false, pub);
    signer.update(msg, 0, msg.length);

    if (!signer.verifySignature(s))
    {
        fail("test " + id + " failed PSSSigner verification");
    }
}

项目：irma_future_id 文件：PSSBlindTest.java

private boolean isProcessingOkay(
    RSAKeyParameters    pub,
    RSAKeyParameters    prv,
    byte[]              data,
    SecureRandom        random)
    throws Exception
{
    RSABlindingFactorGenerator blindFactorGen = new RSABlindingFactorGenerator();
    RSABlindingEngine blindingEngine = new RSABlindingEngine();
    PSSSigner blindSigner = new PSSSigner(blindingEngine, new SHA1Digest(), 20);
    PSSSigner pssEng = new PSSSigner(new RSAEngine(), new SHA1Digest(), 20);

    random.nextBytes(data);

    blindFactorGen.init(pub);

    BigInteger blindFactor = blindFactorGen.generateBlindingFactor();
    RSABlindingParameters params = new RSABlindingParameters(pub, blindFactor);

    // generate a blind signature
    blindSigner.init(true, new ParametersWithRandom(params, random));

    blindSigner.update(data, 0, data.length);

    byte[] blindedData = blindSigner.generateSignature();

    RSAEngine signerEngine = new RSAEngine();

    signerEngine.init(true, prv);

    byte[] blindedSig = signerEngine.processBlock(blindedData, 0, blindedData.length);

    // unblind the signature
    blindingEngine.init(false, params);

    byte[] s = blindingEngine.processBlock(blindedSig, 0, blindedSig.length);

    //verify signature with PSSSigner
    pssEng.init(false, pub);
    pssEng.update(data, 0, data.length);

    return pssEng.verifySignature(s);
}

项目：bc-java 文件：PSSBlindTest.java

private void testSig(
    int                 id,
    RSAKeyParameters    pub,
    RSAKeyParameters    prv,
    byte[]              slt,
    byte[]              msg,
    byte[]              sig)
    throws Exception
{
    RSABlindingFactorGenerator blindFactorGen = new RSABlindingFactorGenerator();
    RSABlindingEngine blindingEngine = new RSABlindingEngine();
    PSSSigner blindSigner = new PSSSigner(blindingEngine, new SHA1Digest(), 20);
    PSSSigner signer = new PSSSigner(new RSAEngine(), new SHA1Digest(), 20);

    blindFactorGen.init(pub);

    BigInteger blindFactor = blindFactorGen.generateBlindingFactor();
    RSABlindingParameters params = new RSABlindingParameters(pub, blindFactor);

    // generate a blind signature
    blindSigner.init(true, new ParametersWithRandom(params, new FixedRandom(slt)));

    blindSigner.update(msg, 0, msg.length);

    byte[] blindedData = blindSigner.generateSignature();

    RSAEngine signerEngine = new RSAEngine();

    signerEngine.init(true, prv);

    byte[] blindedSig = signerEngine.processBlock(blindedData, 0, blindedData.length);

    // unblind the signature
    blindingEngine.init(false, params);

    byte[] s = blindingEngine.processBlock(blindedSig, 0, blindedSig.length);

    //signature verification
    if (!areEqual(s, sig))
    {
        fail("test " + id + " failed generation");
    }

    //verify signature with PSSSigner
    signer.init(false, pub);
    signer.update(msg, 0, msg.length);

    if (!signer.verifySignature(s))
    {
        fail("test " + id + " failed PSSSigner verification");
    }
}

项目：bc-java 文件：PSSBlindTest.java

private boolean isProcessingOkay(
    RSAKeyParameters    pub,
    RSAKeyParameters    prv,
    byte[]              data,
    SecureRandom        random)
    throws Exception
{
    RSABlindingFactorGenerator blindFactorGen = new RSABlindingFactorGenerator();
    RSABlindingEngine blindingEngine = new RSABlindingEngine();
    PSSSigner blindSigner = new PSSSigner(blindingEngine, new SHA1Digest(), 20);
    PSSSigner pssEng = new PSSSigner(new RSAEngine(), new SHA1Digest(), 20);

    random.nextBytes(data);

    blindFactorGen.init(pub);

    BigInteger blindFactor = blindFactorGen.generateBlindingFactor();
    RSABlindingParameters params = new RSABlindingParameters(pub, blindFactor);

    // generate a blind signature
    blindSigner.init(true, new ParametersWithRandom(params, random));

    blindSigner.update(data, 0, data.length);

    byte[] blindedData = blindSigner.generateSignature();

    RSAEngine signerEngine = new RSAEngine();

    signerEngine.init(true, prv);

    byte[] blindedSig = signerEngine.processBlock(blindedData, 0, blindedData.length);

    // unblind the signature
    blindingEngine.init(false, params);

    byte[] s = blindingEngine.processBlock(blindedSig, 0, blindedSig.length);

    //verify signature with PSSSigner
    pssEng.init(false, pub);
    pssEng.update(data, 0, data.length);

    return pssEng.verifySignature(s);
}