Example usage for java.security AlgorithmParameters init

Introduction

In this page you can find the example usage for java.security AlgorithmParameters init.

Prototype

public final void init(byte[] params) throws IOException 

Source Link

Document

Imports the specified parameters and decodes them according to the primary decoding format for parameters.

Usage

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

    AlgorithmParameters params = AlgorithmParameters.getInstance("AES", "BC");
    IvParameterSpec ivSpec = new IvParameterSpec(new byte[16]);
    params.init(ivSpec);
    ASN1InputStream aIn = new ASN1InputStream(params.getEncoded("ASN.1"));

    System.out.println(ASN1Dump.dumpAsString(aIn.readObject()));
}

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From source file:com.amazonaws.cognito.sync.demo.client.server.AESEncryption.java

private static byte[] decrypt(byte[] cipherBytes, String key, byte[] iv) throws Exception {
    Cipher cipher = Cipher.getInstance(ENCRYPTION_ALGORITHM);
    AlgorithmParameters params = AlgorithmParameters.getInstance("AES");
    params.init(new IvParameterSpec(iv));
    cipher.init(Cipher.DECRYPT_MODE, getKey(key), params);
    return cipher.doFinal(cipherBytes);
}

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From source file:com.amazonaws.tvm.AESEncryption.java

public static byte[] encrypt(String clearText, String key, byte[] iv) throws Exception {
    Cipher cipher = Cipher.getInstance(ENCRYPTION_ALGORITHM);
    AlgorithmParameters params = AlgorithmParameters.getInstance("AES");
    params.init(new IvParameterSpec(iv));
    cipher.init(Cipher.ENCRYPT_MODE, getKey(key), params);
    return cipher.doFinal(clearText.getBytes());
}

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From source file:com.ad.mediasharing.tvmclient.AESEncryption.java

public static byte[] decrypt(byte[] cipherBytes, String key, byte[] iv) throws Exception {
    Cipher cipher = Cipher.getInstance(ENCRYPTION_ALGORITHM);
    AlgorithmParameters params = AlgorithmParameters.getInstance("AES");
    params.init(new IvParameterSpec(iv));
    cipher.init(Cipher.DECRYPT_MODE, getKey(key), params);
    return cipher.doFinal(cipherBytes);
}

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From source file:com.amazonaws.cognito.sync.devauth.client.AESEncryption.java

/**
 * Decrypt a cipher in bytes using the specified key
 * // w  ww  .  j av  a2s.c o m
 * @param cipherBytes encrypted bytes
 * @param key the key used in decryption
 * @param iv
 * @return
 * @throws Exception
 */
public static byte[] decrypt(byte[] cipherBytes, String key, byte[] iv) throws Exception {
    Cipher cipher = Cipher.getInstance(ENCRYPTION_ALGORITHM);
    AlgorithmParameters params = AlgorithmParameters.getInstance("AES");
    params.init(new IvParameterSpec(iv));
    cipher.init(Cipher.DECRYPT_MODE, getKey(key), params);
    return cipher.doFinal(cipherBytes);
}

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From source file:com.amazonaws.cognito.devauthsample.AESEncryption.java

private static byte[] encrypt(String clearText, String key, byte[] iv) {
    try {/*from w  ww  .j a va  2 s.  c  om*/
        Cipher cipher = Cipher.getInstance(ENCRYPTION_ALGORITHM);
        AlgorithmParameters params = AlgorithmParameters.getInstance("AES");
        params.init(new IvParameterSpec(iv));
        cipher.init(Cipher.ENCRYPT_MODE, getKey(key), params);
        return cipher.doFinal(clearText.getBytes());
    } catch (GeneralSecurityException e) {
        throw new RuntimeException("Failed to encrypt.", e);
    }
}

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From source file:com.amazonaws.cognito.devauthsample.AESEncryption.java

private static byte[] decrypt(byte[] cipherBytes, String key, byte[] iv) {
    try {//from   w  w  w  . j  a va 2 s. c om
        Cipher cipher = Cipher.getInstance(ENCRYPTION_ALGORITHM);
        AlgorithmParameters params = AlgorithmParameters.getInstance("AES");
        params.init(new IvParameterSpec(iv));
        cipher.init(Cipher.DECRYPT_MODE, getKey(key), params);
        return cipher.doFinal(cipherBytes);
    } catch (GeneralSecurityException e) {
        throw new RuntimeException("Failed to decrypt.", e);
    }
}

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From source file:net.sf.keystore_explorer.crypto.privatekey.Pkcs8Util.java

/**
 * PKCS #8 encode and encrypt a private key.
 *
 * @return The encrypted encoding//from   w  w w .  ja  va2  s.  c  o  m
 * @param privateKey
 *            The private key
 * @param pbeType
 *            PBE algorithm to use for encryption
 * @param password
 *            Encryption password
 * @throws CryptoException
 *             Problem encountered while getting the encoded private key
 * @throws IOException
 *             If an I/O error occurred
 */
public static byte[] getEncrypted(PrivateKey privateKey, Pkcs8PbeType pbeType, Password password)
        throws CryptoException, IOException {
    try {
        byte[] pkcs8 = get(privateKey);

        // Generate PBE secret key from password
        SecretKeyFactory keyFact = SecretKeyFactory.getInstance(pbeType.jce());
        PBEKeySpec pbeKeySpec = new PBEKeySpec(password.toCharArray());
        SecretKey pbeKey = keyFact.generateSecret(pbeKeySpec);

        // Generate random salt and iteration count
        byte[] salt = generateSalt();
        int iterationCount = generateIterationCount();

        // Store in algorithm parameters
        PBEParameterSpec pbeParameterSpec = new PBEParameterSpec(salt, iterationCount);
        AlgorithmParameters params = AlgorithmParameters.getInstance(pbeType.jce());
        params.init(pbeParameterSpec);

        // Create PBE cipher from key and params
        Cipher cipher = Cipher.getInstance(pbeType.jce());
        cipher.init(Cipher.ENCRYPT_MODE, pbeKey, params);

        // Encrypt key
        byte[] encPkcs8 = cipher.doFinal(pkcs8);

        // Create and return encrypted private key information
        EncryptedPrivateKeyInfo encPrivateKeyInfo = new EncryptedPrivateKeyInfo(params, encPkcs8);

        return encPrivateKeyInfo.getEncoded();
    } catch (GeneralSecurityException ex) {
        throw new CryptoException("NoEncryptPkcs8PrivateKey.exception.message", ex);
    }
}

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From source file:cherry.goods.crypto.RSASignatureTest.java

private RSASignature create2(char[] password) throws Exception {

    KeyPairGenerator keygen = KeyPairGenerator.getInstance("RSA");
    keygen.initialize(2048);/*from w  w w .j a v  a  2s .c  o m*/
    KeyPair key = keygen.generateKeyPair();

    String pbeAlgName = "PBEWithMD5AndDES";
    PBEKeySpec pbeKeySpec = new PBEKeySpec(password);
    PBEParameterSpec pbeParamSpec = new PBEParameterSpec(RandomUtils.nextBytes(8), 20);
    SecretKey pbeKey = SecretKeyFactory.getInstance(pbeAlgName).generateSecret(pbeKeySpec);
    AlgorithmParameters pbeParam = AlgorithmParameters.getInstance(pbeAlgName);
    pbeParam.init(pbeParamSpec);
    Cipher cipher = Cipher.getInstance(pbeAlgName);
    cipher.init(Cipher.ENCRYPT_MODE, pbeKey, pbeParam);
    EncryptedPrivateKeyInfo encryptedKeyInfo = new EncryptedPrivateKeyInfo(pbeParam,
            cipher.doFinal(key.getPrivate().getEncoded()));

    RSASignature impl = new RSASignature();
    impl.setAlgorithm("SHA256withRSA");
    impl.setPublicKeyBytes(key.getPublic().getEncoded());
    impl.setPrivateKeyBytes(encryptedKeyInfo.getEncoded(), password);
    return impl;
}

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From source file:cherry.goods.crypto.RSACryptoTest.java

private RSACrypto create2(char[] password) throws Exception {

    KeyPairGenerator keygen = KeyPairGenerator.getInstance("RSA");
    keygen.initialize(2048);/*from w w  w  .  j  ava  2 s. co m*/
    KeyPair key = keygen.generateKeyPair();

    String pbeAlgName = "PBEWithMD5AndDES";
    PBEKeySpec pbeKeySpec = new PBEKeySpec(password);
    PBEParameterSpec pbeParamSpec = new PBEParameterSpec(RandomUtils.nextBytes(8), 20);
    SecretKey pbeKey = SecretKeyFactory.getInstance(pbeAlgName).generateSecret(pbeKeySpec);
    AlgorithmParameters pbeParam = AlgorithmParameters.getInstance(pbeAlgName);
    pbeParam.init(pbeParamSpec);
    Cipher cipher = Cipher.getInstance(pbeAlgName);
    cipher.init(Cipher.ENCRYPT_MODE, pbeKey, pbeParam);
    EncryptedPrivateKeyInfo encryptedKeyInfo = new EncryptedPrivateKeyInfo(pbeParam,
            cipher.doFinal(key.getPrivate().getEncoded()));

    RSACrypto impl = new RSACrypto();
    impl.setAlgorithm("RSA/ECB/PKCS1Padding");
    impl.setPublicKeyBytes(key.getPublic().getEncoded());
    impl.setPrivateKeyBytes(encryptedKeyInfo.getEncoded(), password);
    return impl;
}

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