Example usage for javax.crypto SecretKeyFactory getInstance

List of usage examples for javax.crypto SecretKeyFactory getInstance

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Introduction

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

Prototype

public static final SecretKeyFactory getInstance(String algorithm) throws NoSuchAlgorithmException

Source Link

Document

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

Usage

From source file:io.hawkcd.agent.services.SecurityService.java

private Key generateKey() throws Exception {
    SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    char[] password = PASSWORD.toCharArray();
    byte[] salt = getBytes(SALT);

    KeySpec spec = new PBEKeySpec(password, salt, 65536, 128);
    SecretKey tmp = factory.generateSecret(spec);
    byte[] encoded = tmp.getEncoded();
    return new SecretKeySpec(encoded, "AES");
}

From source file:com.wms.studio.security.utils.Digests.java

public static byte[] desEncrypt(String pwd, byte[] key) throws Exception {
    // ?DESKeySpec
    DESKeySpec dks = new DESKeySpec(key);
    // ?DESKeySpec??SecretKey
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
    SecretKey securekey = keyFactory.generateSecret(dks);
    // Cipher??//from  w  ww  .j a v a 2 s  .c  om
    Cipher cipher = Cipher.getInstance(DES);
    // ?Cipher
    cipher.init(Cipher.ENCRYPT_MODE, securekey, random);
    return cipher.doFinal(pwd.getBytes());
}

From source file:org.eclipse.che.ide.ext.datasource.server.EncryptTextService.java

public String decryptText(String textToDecrypt) throws Exception {
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
    SecretKey key = keyFactory.generateSecret(new PBEKeySpec(getMasterPassword()));
    Cipher pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");
    pbeCipher.init(Cipher.DECRYPT_MODE, key, new PBEParameterSpec(SALT, 20));
    return new String(pbeCipher.doFinal(Base64.decodeBase64(textToDecrypt)), "UTF-8");
}

From source file:org.webical.dao.encryption.impl.DesEncryptor.java

/**
 * Creates the DesEncryptor//w w  w .  j  a  va2s  . c o m
 * @param passPhrase the passphrase to use in encryption and decryption
 * @throws InvalidKeyException
 * @throws InvalidAlgorithmParameterException
 * @throws NoSuchAlgorithmException
 * @throws NoSuchPaddingException
 * @throws InvalidKeySpecException
 */
public DesEncryptor(String passPhrase) throws InvalidKeyException, InvalidAlgorithmParameterException,
        NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeySpecException {
    // Create the key
    KeySpec keySpec = new PBEKeySpec(passPhrase.toCharArray(), salt, iterationCount);
    SecretKey key = SecretKeyFactory.getInstance("PBEWithMD5AndDES").generateSecret(keySpec);
    encryptCipher = Cipher.getInstance(key.getAlgorithm());
    decryptCipher = Cipher.getInstance(key.getAlgorithm());

    // Prepare the parameter to the ciphers
    AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt, iterationCount);

    // Create the ciphers
    encryptCipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
    decryptCipher.init(Cipher.DECRYPT_MODE, key, paramSpec);
}

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 av a2s  .  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()));

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

From source file:com.greenline.hrs.admin.util.encrypt.DESUtil.java

/**
 * Description ?/*  w ww  .  jav  a2s .  co  m*/
 *
 * @param data
 * @param key  byte
 * @return
 * @throws Exception
 */
private static byte[] encrypt(byte[] data, byte[] key) throws GeneralSecurityException {
    // ????
    SecureRandom sr = new SecureRandom();

    // ?DESKeySpec
    DESKeySpec dks = new DESKeySpec(key);

    // ?DESKeySpec??SecretKey
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
    SecretKey securekey = keyFactory.generateSecret(dks);

    // Cipher??
    Cipher cipher = Cipher.getInstance(DES);

    // ?Cipher
    cipher.init(Cipher.ENCRYPT_MODE, securekey, sr);

    return cipher.doFinal(data);

}

From source file:com.github.sshw.crypt.EncryptionBean.java

public Key keyFromPassword(String password) throws Exception {
    SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    KeySpec spec = new PBEKeySpec(password.toCharArray(), password.getBytes(), 1000, 128);
    SecretKey tmp = factory.generateSecret(spec);
    SecretKey secret = new SecretKeySpec(tmp.getEncoded(), "AES");
    return secret;
}

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

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

    KeyPairGenerator keygen = KeyPairGenerator.getInstance("RSA");
    keygen.initialize(2048);/*w w w .  j av a2  s .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()));

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

From source file:net.mobid.codetraq.utils.PasswordProcessor.java

/**
 * Decrypts a text using the <code>passPhrase</code> above and an algorithm supported
 * by your virtual machine implementation. You can change the default algorithm with
 * another algorithm, but please make sure your virtual machine supports it.
 * @param valueToDecrypt - text to decrypt
 * @return a plain text// www.jav  a2s. com
 */
public static String decryptString(String valueToDecrypt) {
    String output = null;
    try {
        KeySpec keySpec = new PBEKeySpec(passPhrase.toCharArray(), salt, iterations);
        SecretKey secretKey = SecretKeyFactory.getInstance("PBEWithMD5AndDES").generateSecret(keySpec);
        Cipher cipher = Cipher.getInstance(secretKey.getAlgorithm());
        AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt, iterations);
        cipher.init(Cipher.DECRYPT_MODE, secretKey, paramSpec);
        // begin decrypting...
        byte[] encrypted = new Base64().decode(valueToDecrypt);
        byte[] utf8 = cipher.doFinal(encrypted);
        output = new String(utf8, "UTF8");
    } catch (Exception ex) {
        Logger.getLogger(PasswordProcessor.class.getName()).log(Level.SEVERE, null, ex);
    }
    return output;
}

From source file:net.sf.jftp.config.Crypto.java

public static String Decrypt(String str) {
    // create cryptography object
    SecretKeyFactory keyFactory;//from   w  w w . j a va  2s . co m
    try {
        keyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
    } catch (NoSuchAlgorithmException e) {
        // We could try another algorithm, but it is highly unlikely that this would be the case
        return "";
    }

    // init key
    SecretKey key;
    try {
        key = keyFactory.generateSecret(new PBEKeySpec(PASSWORD));
    } catch (InvalidKeySpecException e) {
        return "";
    }

    // init cipher
    Cipher pbeCipher;
    try {
        pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");
    } catch (NoSuchAlgorithmException e) {
        return "";
    } catch (NoSuchPaddingException e) {
        return "";
    }

    try {
        pbeCipher.init(Cipher.DECRYPT_MODE, key, new PBEParameterSpec(SALT, 20));
    } catch (InvalidKeyException e) {
        return "";
    } catch (InvalidAlgorithmParameterException e) {
        return "";
    }

    // decode & return decoded string
    String dec;

    try {
        dec = new String(pbeCipher.doFinal(base64Decode(str)));
    } catch (IllegalBlockSizeException e) {
        return "";
    } catch (BadPaddingException e) {
        return "";
    } catch (IOException e) {
        return "";
    }

    return dec;
}