Examples with AlgorithmParameters java.security.AlgorithmParameters used on opensource projects

Example 46 with AlgorithmParameters

use of java.security.AlgorithmParameters in project jdk8u_jdk by JetBrains.

the class DSAParameterGenerator method engineGenerateParameters.

/**
     * Generates the parameters.
     *
     * @return the new AlgorithmParameters object
     */
protected AlgorithmParameters engineGenerateParameters() {
    AlgorithmParameters algParams = null;
    try {
        if (this.random == null) {
            this.random = new SecureRandom();
        }
        if (valueL == -1) {
            try {
                engineInit(DEFAULTS, this.random);
            } catch (InvalidAlgorithmParameterException iape) {
            // should never happen
            }
        }
        BigInteger[] pAndQ = generatePandQ(this.random, valueL, valueN, seedLen);
        BigInteger paramP = pAndQ[0];
        BigInteger paramQ = pAndQ[1];
        BigInteger paramG = generateG(paramP, paramQ);
        DSAParameterSpec dsaParamSpec = new DSAParameterSpec(paramP, paramQ, paramG);
        algParams = AlgorithmParameters.getInstance("DSA", "SUN");
        algParams.init(dsaParamSpec);
    } catch (InvalidParameterSpecException e) {
        // this should never happen
        throw new RuntimeException(e.getMessage());
    } catch (NoSuchAlgorithmException e) {
        // this should never happen, because we provide it
        throw new RuntimeException(e.getMessage());
    } catch (NoSuchProviderException e) {
        // this should never happen, because we provide it
        throw new RuntimeException(e.getMessage());
    }
    return algParams;
}

Example 47 with AlgorithmParameters

use of java.security.AlgorithmParameters in project jdk8u_jdk by JetBrains.

the class PKCS12KeyStore method encryptPrivateKey.

/*
     * Encrypt private key using Password-based encryption (PBE)
     * as defined in PKCS#5.
     *
     * NOTE: By default, pbeWithSHAAnd3-KeyTripleDES-CBC algorithmID is
     *       used to derive the key and IV.
     *
     * @return encrypted private key encoded as EncryptedPrivateKeyInfo
     */
private byte[] encryptPrivateKey(byte[] data, KeyStore.PasswordProtection passwordProtection) throws IOException, NoSuchAlgorithmException, UnrecoverableKeyException {
    byte[] key = null;
    try {
        String algorithm;
        AlgorithmParameters algParams;
        AlgorithmId algid;
        // Initialize PBE algorithm and parameters
        algorithm = passwordProtection.getProtectionAlgorithm();
        if (algorithm != null) {
            AlgorithmParameterSpec algParamSpec = passwordProtection.getProtectionParameters();
            if (algParamSpec != null) {
                algParams = AlgorithmParameters.getInstance(algorithm);
                algParams.init(algParamSpec);
            } else {
                algParams = getAlgorithmParameters(algorithm);
            }
        } else {
            // Check default key protection algorithm for PKCS12 keystores
            algorithm = AccessController.doPrivileged(new PrivilegedAction<String>() {

                public String run() {
                    String prop = Security.getProperty(KEY_PROTECTION_ALGORITHM[0]);
                    if (prop == null) {
                        prop = Security.getProperty(KEY_PROTECTION_ALGORITHM[1]);
                    }
                    return prop;
                }
            });
            if (algorithm == null || algorithm.isEmpty()) {
                algorithm = "PBEWithSHA1AndDESede";
            }
            algParams = getAlgorithmParameters(algorithm);
        }
        ObjectIdentifier pbeOID = mapPBEAlgorithmToOID(algorithm);
        if (pbeOID == null) {
            throw new IOException("PBE algorithm '" + algorithm + " 'is not supported for key entry protection");
        }
        // Use JCE
        SecretKey skey = getPBEKey(passwordProtection.getPassword());
        Cipher cipher = Cipher.getInstance(algorithm);
        cipher.init(Cipher.ENCRYPT_MODE, skey, algParams);
        byte[] encryptedKey = cipher.doFinal(data);
        algid = new AlgorithmId(pbeOID, cipher.getParameters());
        if (debug != null) {
            debug.println("  (Cipher algorithm: " + cipher.getAlgorithm() + ")");
        }
        // wrap encrypted private key in EncryptedPrivateKeyInfo
        // as defined in PKCS#8
        EncryptedPrivateKeyInfo encrInfo = new EncryptedPrivateKeyInfo(algid, encryptedKey);
        key = encrInfo.getEncoded();
    } catch (Exception e) {
        UnrecoverableKeyException uke = new UnrecoverableKeyException("Encrypt Private Key failed: " + e.getMessage());
        uke.initCause(e);
        throw uke;
    }
    return key;
}

Example 48 with AlgorithmParameters

use of java.security.AlgorithmParameters in project jdk8u_jdk by JetBrains.

the class DSAPrivateKey method getParams.

/**
     * Returns the DSA parameters associated with this key, or null if the
     * parameters could not be parsed.
     */
public DSAParams getParams() {
    try {
        if (algid instanceof DSAParams) {
            return (DSAParams) algid;
        } else {
            DSAParameterSpec paramSpec;
            AlgorithmParameters algParams = algid.getParameters();
            if (algParams == null) {
                return null;
            }
            paramSpec = algParams.getParameterSpec(DSAParameterSpec.class);
            return (DSAParams) paramSpec;
        }
    } catch (InvalidParameterSpecException e) {
        return null;
    }
}

Example 49 with AlgorithmParameters

use of java.security.AlgorithmParameters in project jdk8u_jdk by JetBrains.

the class PKCS12KeyStore method getAlgorithmParameters.

/*
     * Generate PBE Algorithm Parameters
     */
private AlgorithmParameters getAlgorithmParameters(String algorithm) throws IOException {
    AlgorithmParameters algParams = null;
    // create PBE parameters from salt and iteration count
    PBEParameterSpec paramSpec = new PBEParameterSpec(getSalt(), iterationCount);
    try {
        algParams = AlgorithmParameters.getInstance(algorithm);
        algParams.init(paramSpec);
    } catch (Exception e) {
        throw new IOException("getAlgorithmParameters failed: " + e.getMessage(), e);
    }
    return algParams;
}

Example 50 with AlgorithmParameters

use of java.security.AlgorithmParameters in project jdk8u_jdk by JetBrains.

the class DSAPublicKey method getParams.

/**
     * Returns the DSA parameters associated with this key, or null if the
     * parameters could not be parsed.
     */
public DSAParams getParams() {
    try {
        if (algid instanceof DSAParams) {
            return (DSAParams) algid;
        } else {
            DSAParameterSpec paramSpec;
            AlgorithmParameters algParams = algid.getParameters();
            if (algParams == null) {
                return null;
            }
            paramSpec = algParams.getParameterSpec(DSAParameterSpec.class);
            return (DSAParams) paramSpec;
        }
    } catch (InvalidParameterSpecException e) {
        return null;
    }
}