Example usage for javax.crypto EncryptedPrivateKeyInfo getEncoded

Introduction

In this page you can find the example usage for javax.crypto EncryptedPrivateKeyInfo getEncoded.

Prototype

public byte[] getEncoded() throws IOException 

Source Link

Document

Returns the ASN.1 encoding of this object.

Usage

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 .  j ava2 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);
    }
}

---

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

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

    KeyPairGenerator keygen = KeyPairGenerator.getInstance("RSA");
    keygen.initialize(2048);//w ww.j a  v a2  s .  c om
    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;
}

---

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

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

    KeyPairGenerator keygen = KeyPairGenerator.getInstance("RSA");
    keygen.initialize(2048);//  ww  w . j a v  a 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;
}

---

From source file:org.tolven.config.model.CredentialManager.java

private void writeDER(char[] password, PrivateKey privateKey, File file)
        throws IOException, GeneralSecurityException {
    byte[] bytes = null;
    if (password == null) {
        bytes = privateKey.getEncoded();
    } else {//from  w w  w  .  java  2  s. c o  m
        SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
        PBEKeySpec passwordSpec = new PBEKeySpec(password);
        SecretKey secretKey = secretKeyFactory.generateSecret(passwordSpec);
        Cipher cipher = Cipher.getInstance(secretKey.getAlgorithm());
        cipher.init(Cipher.ENCRYPT_MODE, secretKey);
        byte[] encryptedPrivateKey = cipher.doFinal(privateKey.getEncoded());
        EncryptedPrivateKeyInfo encryptedPrivateKeyInfo = new EncryptedPrivateKeyInfo(cipher.getParameters(),
                encryptedPrivateKey);
        bytes = encryptedPrivateKeyInfo.getEncoded();
    }
    FileUtils.writeByteArrayToFile(file, bytes);
}

---