Example usage for javax.crypto SecretKeyFactory getInstance

Introduction

In this page you can find the example usage for javax.crypto SecretKeyFactory getInstance.

Prototype

public static final SecretKeyFactory getInstance(String algorithm, Provider provider)
        throws NoSuchAlgorithmException 

Source Link

Document

Returns a SecretKeyFactory object that converts secret keys of the specified algorithm.

Usage

From source file:org.apache.nifi.processors.standard.util.crypto.OpenSSLPKCS5CipherProvider.java

protected Cipher getInitializedCipher(EncryptionMethod encryptionMethod, String password, byte[] salt,
        boolean encryptMode) throws NoSuchAlgorithmException, NoSuchProviderException, InvalidKeySpecException,
        NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException {
    if (encryptionMethod == null) {
        throw new IllegalArgumentException("The encryption method must be specified");
    }//from  www  .ja  v a  2  s .c  o  m

    if (StringUtils.isEmpty(password)) {
        throw new IllegalArgumentException("Encryption with an empty password is not supported");
    }

    validateSalt(encryptionMethod, salt);

    String algorithm = encryptionMethod.getAlgorithm();
    String provider = encryptionMethod.getProvider();

    // Initialize secret key from password
    final PBEKeySpec pbeKeySpec = new PBEKeySpec(password.toCharArray());
    final SecretKeyFactory factory = SecretKeyFactory.getInstance(algorithm, provider);
    SecretKey tempKey = factory.generateSecret(pbeKeySpec);

    final PBEParameterSpec parameterSpec = new PBEParameterSpec(salt, getIterationCount());
    Cipher cipher = Cipher.getInstance(algorithm, provider);
    cipher.init(encryptMode ? Cipher.ENCRYPT_MODE : Cipher.DECRYPT_MODE, tempKey, parameterSpec);
    return cipher;
}

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From source file:eap.util.EDcodeUtil.java

private static byte[] des(byte[] data, byte[] key, int opMode) {
    try {/* ww  w  .  j a v a  2  s .  c o m*/
        DESKeySpec desKey = new DESKeySpec(key);
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES", provider);
        SecretKey secureKey = keyFactory.generateSecret(desKey);

        Cipher cipher = Cipher.getInstance("DES", provider);
        //         SecureRandom secureRandom = new SecureRandom();
        SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG"); // provider
        cipher.init(opMode, secureKey, secureRandom);

        return cipher.doFinal(data);
    } catch (Exception e) {
        throw new IllegalArgumentException(e.getMessage(), e);
    }
}

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From source file:com.glaf.core.security.SecurityUtils.java

/**
 * ??//from   www.ja va 2  s .  co  m
 * 
 * @param ctx
 *            
 * @param envelope
 *            ?
 * @param privateKey
 *            ?
 * @return key 
 */
public static Key openDigitalEnvelope(SecurityContext ctx, String envelope, Key privateKey) {
    try {
        Cipher cipher = Cipher.getInstance(ctx.getAsymmetryAlgorithm(), ctx.getJceProvider());
        cipher.init(Cipher.DECRYPT_MODE, privateKey);
        envelope = StringTools.replaceIgnoreCase(envelope, " ", "");
        byte[] key = cipher.doFinal(Base64.decodeBase64(envelope));

        SecretKeyFactory skf = SecretKeyFactory.getInstance(ctx.getSymmetryKeyAlgorithm(),
                ctx.getJceProvider());
        DESKeySpec keySpec = new DESKeySpec(key);
        Key symmetryKey = skf.generateSecret(keySpec);

        return symmetryKey;
    } catch (Exception ex) {
        throw new SecurityException(ex);
    }
}

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From source file:org.apache.nifi.security.util.crypto.CipherUtility.java

/**
 * Initializes a {@link Cipher} object with the given PBE parameters.
 *
 * @param algorithm      the algorithm//w ww . ja va2  s. c  o  m
 * @param provider       the JCA provider
 * @param password       the password
 * @param salt           the salt
 * @param iterationCount the KDF iteration count
 * @param encryptMode    true to encrypt; false to decrypt
 * @return the initialized Cipher
 * @throws IllegalArgumentException if any parameter is invalid
 */
public static Cipher initPBECipher(String algorithm, String provider, String password, byte[] salt,
        int iterationCount, boolean encryptMode) throws IllegalArgumentException {
    try {
        // Initialize secret key from password
        final PBEKeySpec pbeKeySpec = new PBEKeySpec(password.toCharArray());
        final SecretKeyFactory factory = SecretKeyFactory.getInstance(algorithm, provider);
        SecretKey tempKey = factory.generateSecret(pbeKeySpec);

        final PBEParameterSpec parameterSpec = new PBEParameterSpec(salt, iterationCount);
        Cipher cipher = Cipher.getInstance(algorithm, provider);
        cipher.init(encryptMode ? Cipher.ENCRYPT_MODE : Cipher.DECRYPT_MODE, tempKey, parameterSpec);
        return cipher;
    } catch (NoSuchAlgorithmException | NoSuchProviderException | InvalidKeySpecException
            | NoSuchPaddingException | InvalidKeyException | InvalidAlgorithmParameterException e) {
        throw new IllegalArgumentException("One or more parameters to initialize the PBE cipher were invalid",
                e);
    }
}

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From source file:org.ejbca.util.StringTools.java

public static String pbeDecryptStringWithSha256Aes192(final String in) throws IllegalBlockSizeException,
        BadPaddingException, InvalidKeyException, InvalidKeySpecException, NoSuchAlgorithmException,
        NoSuchProviderException, NoSuchPaddingException, UnsupportedEncodingException {
    if (CryptoProviderTools.isUsingExportableCryptography()) {
        log.warn("De-obfuscation not possible due to weak crypto policy.");
        return in;
    }/*from w w w  .j av  a  2 s.c om*/

    final String algorithm = "PBEWithSHA256And192BitAES-CBC-BC";
    final Cipher c = Cipher.getInstance(algorithm, "BC");
    final PBEKeySpec keySpec = new PBEKeySpec(p, getSalt(), iCount);
    final SecretKeyFactory fact = SecretKeyFactory.getInstance(algorithm, "BC");

    c.init(Cipher.DECRYPT_MODE, fact.generateSecret(keySpec));

    final byte[] dec = c.doFinal(Hex.decode(in.getBytes("UTF-8")));
    return new String(dec);
}

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From source file:org.cesecore.util.StringTools.java

public static String pbeDecryptStringWithSha256Aes192(final String in) throws IllegalBlockSizeException,
        BadPaddingException, InvalidKeyException, InvalidKeySpecException, NoSuchAlgorithmException,
        NoSuchProviderException, NoSuchPaddingException, UnsupportedEncodingException {
    CryptoProviderTools.installBCProviderIfNotAvailable();
    if (CryptoProviderTools.isUsingExportableCryptography()) {
        log.warn("De-obfuscation not possible due to weak crypto policy.");
        return in;
    }/* www .j  a va 2  s  .  c om*/

    final String algorithm = "PBEWithSHA256And192BitAES-CBC-BC";
    final Cipher c = Cipher.getInstance(algorithm, "BC");
    final PBEKeySpec keySpec = new PBEKeySpec(p, getSalt(), iCount);
    final SecretKeyFactory fact = SecretKeyFactory.getInstance(algorithm, "BC");

    c.init(Cipher.DECRYPT_MODE, fact.generateSecret(keySpec));

    final byte[] dec = c.doFinal(Hex.decode(in.getBytes("UTF-8")));
    return new String(dec);
}

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