Examples with AlgorithmParameterSpec java.security.spec.AlgorithmParameterSpec used on opensource projects

Example 71 with AlgorithmParameterSpec

use of java.security.spec.AlgorithmParameterSpec in project wicket by apache.

the class SunJceCrypt method crypt.

/**
 * Crypts the given byte array
 *
 * @param input
 *            byte array to be encrypted
 * @param mode
 *            crypt mode
 * @return the input crypted. Null in case of an error
 * @throws GeneralSecurityException
 */
@Override
protected byte[] crypt(final byte[] input, final int mode) throws GeneralSecurityException {
    SecretKey key = generateSecretKey();
    AlgorithmParameterSpec spec = createParameterSpec();
    Cipher ciph = createCipher(key, spec, mode);
    return ciph.doFinal(input);
}

Example 72 with AlgorithmParameterSpec

use of java.security.spec.AlgorithmParameterSpec in project xipki by xipki.

the class KeyUtil method generateRSAKeypair.

// CHECKSTYLE:SKIP
public static KeyPair generateRSAKeypair(int keysize, BigInteger publicExponent, SecureRandom random) throws NoSuchAlgorithmException, NoSuchProviderException, InvalidAlgorithmParameterException {
    BigInteger tmpPublicExponent = publicExponent;
    if (tmpPublicExponent == null) {
        tmpPublicExponent = RSAKeyGenParameterSpec.F4;
    }
    AlgorithmParameterSpec params = new RSAKeyGenParameterSpec(keysize, tmpPublicExponent);
    KeyPairGenerator kpGen = getKeyPairGenerator("RSA");
    synchronized (kpGen) {
        if (random == null) {
            kpGen.initialize(params);
        } else {
            kpGen.initialize(params, random);
        }
        return kpGen.generateKeyPair();
    }
}

Example 73 with AlgorithmParameterSpec

use of java.security.spec.AlgorithmParameterSpec in project jeesuite-libs by vakinge.

the class DES method decrypt.

/**
 * DES算法，解密
 *
 * @param data 待解密字符串
 * @param key  解密私钥，长度不能够小于8位
 * @return 解密后的字节数组
 * @throws Exception 异常
 */
public static String decrypt(String key, String data) {
    if (data == null)
        return null;
    try {
        DESKeySpec dks = new DESKeySpec(key.getBytes());
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        // key的长度不能够小于8位字节
        Key secretKey = keyFactory.generateSecret(dks);
        Cipher cipher = Cipher.getInstance(ALGORITHM_DES);
        AlgorithmParameterSpec paramSpec = new IvParameterSpec(IV_PARAMS_BYTES);
        cipher.init(Cipher.DECRYPT_MODE, secretKey, paramSpec);
        return new String(cipher.doFinal(hex2byte(data.getBytes())));
    } catch (Exception e) {
        e.printStackTrace();
        return data;
    }
}

Example 74 with AlgorithmParameterSpec

use of java.security.spec.AlgorithmParameterSpec in project Bytecoder by mirkosertic.

the class SupportedGroupsExtension method isAvailableGroup.

// check whether the group is supported by the underlying providers
private static boolean isAvailableGroup(NamedGroup namedGroup) {
    AlgorithmParameters params = null;
    AlgorithmParameterSpec spec = null;
    if ("EC".equals(namedGroup.algorithm)) {
        if (namedGroup.oid != null) {
            try {
                params = JsseJce.getAlgorithmParameters("EC");
                spec = new ECGenParameterSpec(namedGroup.oid);
            } catch (Exception e) {
                return false;
            }
        }
    } else if ("DiffieHellman".equals(namedGroup.algorithm)) {
        try {
            params = JsseJce.getAlgorithmParameters("DiffieHellman");
            spec = getFFDHEDHParameterSpec(namedGroup);
        } catch (Exception e) {
            return false;
        }
    }
    if ((params != null) && (spec != null)) {
        try {
            params.init(spec);
        } catch (Exception e) {
            return false;
        }
        // cache the parameters
        namedGroupParams.put(namedGroup, params);
        return true;
    }
    return false;
}

Example 75 with AlgorithmParameterSpec

use of java.security.spec.AlgorithmParameterSpec in project santuario-java by apache.

the class DOMCanonicalizationMethod method hashCode.

@Override
public int hashCode() {
    int result = 17;
    result = 31 * result + getAlgorithm().hashCode();
    AlgorithmParameterSpec spec = getParameterSpec();
    if (spec != null) {
        result = 31 * result + spec.hashCode();
    }
    return result;
}