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

Example 36 with KeySpec

use of java.security.spec.KeySpec in project audit4j-core by audit4j.

the class EncryptionUtil method generateKeyIfNotAvailable.

/**
 * Generate key.
 *
 * @param key
 *            the key
 * @param salt
 *            the salt
 * @return the key
 * @throws NoSuchAlgorithmException
 *             the no such algorithm exception
 * @throws UnsupportedEncodingException
 *             the unsupported encoding exception
 * @throws InvalidKeySpecException
 *             the invalid key spec exception
 */
private static void generateKeyIfNotAvailable(String key, String salt) throws NoSuchAlgorithmException, UnsupportedEncodingException, InvalidKeySpecException {
    if (null == cryptKey) {
        LOG.debug("Generating Key...");
        SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
        char[] password = key.toCharArray();
        byte[] saltBytes = salt.getBytes(CoreConstants.ENCODE_UTF8);
        KeySpec spec = new PBEKeySpec(password, saltBytes, 65536, 128);
        SecretKey tmp = factory.generateSecret(spec);
        byte[] encoded = tmp.getEncoded();
        cryptKey = new SecretKeySpec(encoded, "AES");
    }
}

Example 37 with KeySpec

use of java.security.spec.KeySpec in project smoke by textbrowser.

the class Cryptography method generateMacKey.

public static SecretKey generateMacKey(byte[] salt, char[] password, int iterations) throws InvalidKeySpecException, NoSuchAlgorithmException {
    // Bits.
    final int length = 512;
    KeySpec keySpec = new PBEKeySpec(password, salt, iterations, length);
    SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    return secretKeyFactory.generateSecret(keySpec);
}

Example 38 with KeySpec

use of java.security.spec.KeySpec in project smoke by textbrowser.

the class Cryptography method pbkdf2.

public static byte[] pbkdf2(byte[] salt, char[] password, int iterations, int length) {
    try {
        KeySpec keySpec = new PBEKeySpec(password, salt, iterations, length);
        SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
        return secretKeyFactory.generateSecret(keySpec).getEncoded();
    } catch (Exception exception) {
        return null;
    }
}

Example 39 with KeySpec

use of java.security.spec.KeySpec in project fdroidclient by f-droid.

the class ZipSigner method readPrivateKey.

/**
 * Read a PKCS 8 format private key.
 */
public PrivateKey readPrivateKey(URL privateKeyUrl, String keyPassword) throws IOException, GeneralSecurityException {
    DataInputStream input = new DataInputStream(privateKeyUrl.openStream());
    try {
        byte[] bytes = readContentAsBytes(input);
        KeySpec spec = decryptPrivateKey(bytes, keyPassword);
        if (spec == null) {
            spec = new PKCS8EncodedKeySpec(bytes);
        }
        try {
            return KeyFactory.getInstance("RSA").generatePrivate(spec);
        } catch (InvalidKeySpecException ex) {
            return KeyFactory.getInstance("DSA").generatePrivate(spec);
        }
    } finally {
        input.close();
    }
}

Example 40 with KeySpec

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

the class SunJceCrypt method generateSecretKey.

/**
 * Generate the de-/encryption key.
 * <p>
 * Note: if you don't provide your own encryption key, the implementation will use a default. Be
 * aware that this is potential security risk. Thus make sure you always provide your own one.
 *
 * @return secretKey the security key generated
 * @throws NoSuchAlgorithmException
 *             unable to find encryption algorithm specified
 * @throws InvalidKeySpecException
 *             invalid encryption key
 */
protected SecretKey generateSecretKey() throws NoSuchAlgorithmException, InvalidKeySpecException {
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(cryptMethod);
    KeySpec spec = createKeySpec();
    return keyFactory.generateSecret(spec);
}