Java 类java.security.AlgorithmParameterGenerator 实例源码

项目：Aki-SSL 文件：JceCMSMacCalculatorBuilder.java

protected AlgorithmParameterSpec generateParameterSpec(ASN1ObjectIdentifier macOID, SecretKey encKey)
    throws CMSException
{
    try
    {
        if (macOID.equals(PKCSObjectIdentifiers.RC2_CBC))
        {
            byte[] iv = new byte[8];

            random.nextBytes(iv);

            return new RC2ParameterSpec(encKey.getEncoded().length * 8, iv);
        }

        AlgorithmParameterGenerator pGen = helper.createAlgorithmParameterGenerator(macOID);

        AlgorithmParameters p = pGen.generateParameters();

        return p.getParameterSpec(IvParameterSpec.class);
    }
    catch (GeneralSecurityException e)
    {
        return null;
    }
}

项目：ipack 文件：CRMFHelper.java

AlgorithmParameterGenerator createAlgorithmParameterGenerator(ASN1ObjectIdentifier algorithm)
    throws GeneralSecurityException
{
    String algorithmName = (String)BASE_CIPHER_NAMES.get(algorithm);

    if (algorithmName != null)
    {
        try
        {
            // this is reversed as the Sun policy files now allow unlimited strength RSA
            return helper.createAlgorithmParameterGenerator(algorithmName);
        }
        catch (NoSuchAlgorithmException e)
        {
            // Ignore
        }
    }
    return helper.createAlgorithmParameterGenerator(algorithm.getId());
}

项目：ipack 文件：JceCMSMacCalculatorBuilder.java

protected AlgorithmParameterSpec generateParameterSpec(ASN1ObjectIdentifier macOID, SecretKey encKey)
    throws CMSException
{
    try
    {
        if (macOID.equals(PKCSObjectIdentifiers.RC2_CBC))
        {
            byte[] iv = new byte[8];

            random.nextBytes(iv);

            return new RC2ParameterSpec(encKey.getEncoded().length * 8, iv);
        }

        AlgorithmParameterGenerator pGen = helper.createAlgorithmParameterGenerator(macOID);

        AlgorithmParameters p = pGen.generateParameters();

        return p.getParameterSpec(IvParameterSpec.class);
    }
    catch (GeneralSecurityException e)
    {
        return null;
    }
}

项目：ipack 文件：EnvelopedDataHelper.java

AlgorithmParameterGenerator createAlgorithmParameterGenerator(ASN1ObjectIdentifier algorithm)
    throws GeneralSecurityException
{
    String algorithmName = (String)BASE_CIPHER_NAMES.get(algorithm);

    if (algorithmName != null)
    {
        try
        {
            // this is reversed as the Sun policy files now allow unlimited strength RSA
            return helper.createAlgorithmParameterGenerator(algorithmName);
        }
        catch (NoSuchAlgorithmException e)
        {
            // Ignore
        }
    }
    return helper.createAlgorithmParameterGenerator(algorithm.getId());
}

项目：openjdk-jdk10 文件：TestDSAGenParameterSpec.java

private static void testDSAGenParameterSpec(DataTuple dataTuple)
        throws NoSuchAlgorithmException, NoSuchProviderException,
        InvalidParameterSpecException, InvalidAlgorithmParameterException {
    System.out.printf("Test case: primePLen=%d, " + "subprimeQLen=%d%n",
            dataTuple.primePLen, dataTuple.subprimeQLen);

    AlgorithmParameterGenerator apg
            = AlgorithmParameterGenerator.getInstance(ALGORITHM_NAME,
                    PROVIDER_NAME);

    DSAGenParameterSpec genParamSpec = createGenParameterSpec(dataTuple);
    // genParamSpec will be null if IllegalAE is thrown when expected.
    if (genParamSpec == null) {
        return;
    }

    try {
        apg.init(genParamSpec, null);
        AlgorithmParameters param = apg.generateParameters();

        checkParam(param, genParamSpec);
        System.out.println("Test case passed");
    } catch (InvalidParameterException ipe) {
        throw new RuntimeException("Test case failed.", ipe);
    }
}

项目：openjdk9 文件：TestDSAGenParameterSpec.java

private static void testDSAGenParameterSpec(DataTuple dataTuple)
        throws NoSuchAlgorithmException, NoSuchProviderException,
        InvalidParameterSpecException, InvalidAlgorithmParameterException {
    System.out.printf("Test case: primePLen=%d, " + "subprimeQLen=%d%n",
            dataTuple.primePLen, dataTuple.subprimeQLen);

    AlgorithmParameterGenerator apg =
            AlgorithmParameterGenerator.getInstance(ALGORITHM_NAME,
                    PROVIDER_NAME);

    DSAGenParameterSpec genParamSpec = createGenParameterSpec(dataTuple);
    // genParamSpec will be null if IllegalAE is thrown when expected.
    if (genParamSpec == null) {
        return;
    }

    try {
        apg.init(genParamSpec, null);
        AlgorithmParameters param = apg.generateParameters();

        checkParam(param, genParamSpec);
        System.out.println("Test case passed");
    } catch (InvalidParameterException ipe) {
        throw new RuntimeException("Test case failed.", ipe);
    }
}

项目：wycheproof 文件：AesGcmTest.java

/**
 * The default authentication tag size should be 128-bit by default for the following reasons:
 * <br>
 * (1) Security: Ferguson, N., Authentication Weaknesses in GCM, Natl. Inst. Stand. Technol. [Web
 * page], http://www.csrc.nist.gov/groups/ST/toolkit/BCM/documents/comments/
 * CWC-GCM/Ferguson2.pdf, May 20, 2005. This paper points out that a n-bit tag has lower strength
 * than expected. <br>
 * (2) Compatibility: Assume an implementer tests some code using one provider than switches to
 * another provider. Such a switch should ideally not lower the security. <br>
 * BouncyCastle used to have only 12-byte authentication tag (b/26186727).
 */
@Test
public void testDefaultTagSizeAlgorithmParameterGenerator() throws Exception {
  byte[] input = new byte[10];
  byte[] key = new byte[16];
  Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
  try {
    AlgorithmParameterGenerator.getInstance("GCM");
  } catch (NoSuchAlgorithmException ex) {
    // Conscrypt does not support AlgorithmParameterGenerator for GCM.
    System.out.println("testDefaultTagSizeAlgorithmParameterGenerator:" + ex.toString());
    return;
  }
  AlgorithmParameters param = AlgorithmParameterGenerator.getInstance("GCM").generateParameters();
  cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(key, "AES"), param);
  byte[] output = cipher.doFinal(input);
  assertEquals(input.length + 16, output.length);
}

项目：Aki-SSL 文件：CRMFHelper.java

AlgorithmParameterGenerator createAlgorithmParameterGenerator(ASN1ObjectIdentifier algorithm)
    throws GeneralSecurityException
{
    String algorithmName = (String)BASE_CIPHER_NAMES.get(algorithm);

    if (algorithmName != null)
    {
        try
        {
            // this is reversed as the Sun policy files now allow unlimited strength RSA
            return helper.createAlgorithmParameterGenerator(algorithmName);
        }
        catch (NoSuchAlgorithmException e)
        {
            // Ignore
        }
    }
    return helper.createAlgorithmParameterGenerator(algorithm.getId());
}

项目：Aki-SSL 文件：EnvelopedDataHelper.java

AlgorithmParameterGenerator createAlgorithmParameterGenerator(ASN1ObjectIdentifier algorithm)
    throws GeneralSecurityException
{
    String algorithmName = (String)BASE_CIPHER_NAMES.get(algorithm);

    if (algorithmName != null)
    {
        try
        {
            // this is reversed as the Sun policy files now allow unlimited strength RSA
            return helper.createAlgorithmParameterGenerator(algorithmName);
        }
        catch (NoSuchAlgorithmException e)
        {
            // Ignore
        }
    }
    return helper.createAlgorithmParameterGenerator(algorithm.getId());
}

项目：Raven-Messenger 文件：DHExchange.java

/**
 * Use 1536 for Fast Prime Generation (less secure) or 2048 for slow prime generation (secure)
 * @param strength
 * @throws InvalidKeyException
 * @throws IllegalStateException
 * @throws InvalidAlgorithmParameterException
 * @throws NoSuchAlgorithmException
 * @throws NoSuchProviderException
 * @throws InvalidKeySpecException
 * @throws InvalidParameterSpecException
 */
public DHExchange(int strength) throws InvalidKeyException, IllegalStateException, InvalidAlgorithmParameterException, NoSuchAlgorithmException, NoSuchProviderException, InvalidKeySpecException, InvalidParameterSpecException {
    Security.addProvider(new org.spongycastle.jce.provider.BouncyCastleProvider());

    AlgorithmParameterGenerator paramGen = AlgorithmParameterGenerator.getInstance("DH", "SC");
    paramGen.init(strength); // number of bits
    AlgorithmParameters params = paramGen.generateParameters();
    DHParameterSpec dhSpec = (DHParameterSpec)params.getParameterSpec(DHParameterSpec.class);

    BigInteger p = dhSpec.getP();
    BigInteger g = dhSpec.getG();

    DHParameterSpec dhParams = new DHParameterSpec(p, g);
    KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DH", "SC");
    keyGen.initialize(dhParams, new SecureRandom());
    KeyAgreement aKeyAgree = KeyAgreement.getInstance("DH", "SC");
    KeyPair aPair = keyGen.generateKeyPair();
    KeyAgreement bKeyAgree = KeyAgreement.getInstance("DH", "SC");
    KeyPair bPair = keyGen.generateKeyPair();

    aKeyAgree.init(aPair.getPrivate());
    bKeyAgree.init(bPair.getPrivate());

    aKeyAgree.doPhase(bPair.getPublic(), true);
    bKeyAgree.doPhase(aPair.getPublic(), true);
}