Example usage for javax.crypto SecretKeyFactory generateSecret

Introduction

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

Prototype

public final SecretKey generateSecret(KeySpec keySpec) throws InvalidKeySpecException

Source Link

Document

Generates a SecretKey object from the provided key specification (key material).

Usage

From source file:com.anteam.demo.codec.cipher.symmetric.DESTest.java

License:asdf

public byte[] testDESedeEn(String plainText) {
    try {//www  .  ja  v  a 2s  .c o  m
        // Create an array to hold the key
        byte[] encryptKey = "This is a test DESede key".getBytes();

        // Create a DESede key spec from the key
        DESedeKeySpec spec = new DESedeKeySpec(encryptKey);

        // Get the secret key factor for generating DESede keys
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DESede");

        // Generate a DESede SecretKey object
        SecretKey theKey = keyFactory.generateSecret(spec);

        // Create a DESede Cipher
        Cipher cipher = Cipher.getInstance("DESede/CBC/PKCS5Padding");

        // Create an initialization vector (necessary for CBC mode)

        IvParameterSpec IvParameters = new IvParameterSpec(
                new byte[] { 0x01, 0x02, 0x03, 0x04, 0x0F, 0x0E, 0x0D, 0x0C });

        // Initialize the cipher and put it into encrypt mode
        cipher.init(Cipher.ENCRYPT_MODE, theKey, IvParameters);
        return cipher.doFinal(plainText.getBytes());

    } catch (Exception exc) {
        exc.printStackTrace();
    }
    return null;
}

From source file:com.anteam.demo.codec.cipher.symmetric.DESTest.java

License:asdf

public byte[] testDESedeDe(byte[] encryptedText) {
    try {/*  ww  w. ja  va  2  s .  com*/
        // Create an array to hold the key
        byte[] encryptKey = "This is a test DESede key".getBytes();

        // Create a DESede key spec from the key
        DESedeKeySpec spec = new DESedeKeySpec(encryptKey);

        // Get the secret key factor for generating DESede keys
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DESede");

        // Generate a DESede SecretKey object
        SecretKey theKey = keyFactory.generateSecret(spec);

        // Create a DESede Cipher
        Cipher cipher = Cipher.getInstance("DESede/CBC/PKCS5Padding");

        // Create an initialization vector (necessary for CBC mode)

        IvParameterSpec IvParameters = new IvParameterSpec(
                new byte[] { 0x01, 0x02, 0x03, 0x04, 0x0F, 0x0E, 0x0D, 0x0C });

        // Initialize the cipher and put it into encrypt mode
        cipher.init(Cipher.DECRYPT_MODE, theKey, IvParameters);

        return cipher.doFinal(encryptedText);
    } catch (Exception exc) {
        exc.printStackTrace();
    }
    return null;
}

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:uk.ac.cam.cl.dtg.segue.auth.SegueLocalAuthenticator.java

/**
 * Compute the hash of a string using the preconfigured hashing function.
 *
 * @param str//from  w w  w .jav a  2 s .  c om
 *            - string to hash
 * @param salt
 *            - random string to use as a salt.
 * @param keyLength
 *            - the key length
 * @return a byte array of the hash
 * @throws NoSuchAlgorithmException
 *             - if the configured algorithm is not valid.
 * @throws InvalidKeySpecException
 *             - if the preconfigured key spec is invalid.
 */
private byte[] computeHash(final String str, final String salt, final int keyLength)
        throws NoSuchAlgorithmException, InvalidKeySpecException {
    char[] strChars = str.toCharArray();
    byte[] saltBytes = salt.getBytes();

    PBEKeySpec spec = new PBEKeySpec(strChars, saltBytes, ITERATIONS, keyLength);

    SecretKeyFactory key = SecretKeyFactory.getInstance(CRYPTO_ALOGRITHM);
    return key.generateSecret(spec).getEncoded();
}

From source file:com.anteam.demo.codec.cipher.symmetric.DESedeCoder.java

/**
 * Decodes a byte array and returns the results as a byte array.
 *
 * @param source A byte array which has been encoded with the appropriate encoder
 * @return ?byte.source, null//w  ww.  jav  a2 s . c  o  m
 * @throws org.apache.commons.codec.DecoderException A decoder exception is thrown if a Decoder encounters a failure condition during the decode process.
 */
@Override
public byte[] decode(byte[] source) throws DecoderException {
    if (source == null) {
        return null;
    }
    try {
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(ALGORITHM_NAME);
        SecretKey secretKey = keyFactory.generateSecret(keySpec);
        Cipher cipher = Cipher.getInstance(CIPHER_NAME);
        cipher.init(Cipher.DECRYPT_MODE, secretKey, IvParameters);
        return cipher.doFinal(source);
    } catch (Exception e) {
        LOG.error(":" + key + ":" + source, e);
        throw new DecoderException(":" + key + ":" + source, e);
    }
}

From source file:org.alfresco.util.encryption.impl.AES256PasswordBasedEncrypter.java

/**
 * Constructor for the class./*  www  . j  a va2 s . c om*/
 * 
 * @param password The password to use when encrypting data <i>(must not be null, empty or blank)</i>.
 */
public AES256PasswordBasedEncrypter(final char[] password)
        throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException {
    // PRECONDITIONS
    assert password != null && password.length > 0 : "password must not be null or empty";

    // Body
    SecretKeyFactory factory = SecretKeyFactory.getInstance(PASSWORD_ALGORITHM);
    KeySpec spec = new PBEKeySpec(password, SALT, NUM_ITERATIONS, KEY_LENGTH);

    secretKey = new SecretKeySpec(factory.generateSecret(spec).getEncoded(), SECRET_KEY_ALGORITHM);
}

From source file:com.anteam.demo.codec.cipher.symmetric.DESedeCoder.java

/**
 * Encodes a byte array and return the encoded data as a byte array.
 *
 * @param source Data to be encoded//from  w  ww. jav  a  2 s.com
 * @return ?byte.source, null
 * @throws org.apache.commons.codec.EncoderException thrown if the Encoder encounters a failure condition during the encoding process.
 */
@Override
public byte[] encode(byte[] source) throws EncoderException {
    if (source == null) {
        return null;
    }
    try {

        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(ALGORITHM_NAME);
        SecretKey secretKey = keyFactory.generateSecret(keySpec);
        Cipher cipher = Cipher.getInstance(CIPHER_NAME);
        cipher.init(Cipher.ENCRYPT_MODE, secretKey, IvParameters);
        return cipher.doFinal(source);

    } catch (Exception e) {
        LOG.error(":" + key + ":" + source, e);
        throw new EncoderException(":" + key + ":" + source, e);
    }
}

From source file:org.kuali.rice.kew.documentoperation.web.DocumentContentOperationAction.java

private SecretKey getSecretKey(String encryptionKey) throws Exception {
    KeyGenerator keygen = KeyGenerator.getInstance("DES");
    SecretKey desKey = keygen.generateKey();

    // Create the cipher
    Cipher cipher = Cipher.getInstance(ALGORITHM);
    cipher.init((Cipher.UNWRAP_MODE), desKey);

    byte[] bytes = Base64.decodeBase64(encryptionKey.getBytes());

    SecretKeyFactory desFactory = SecretKeyFactory.getInstance("DES");

    DESKeySpec keyspec = new DESKeySpec(bytes);
    desKey = desFactory.generateSecret(keyspec);
    // Create the cipher
    cipher.init((Cipher.WRAP_MODE), desKey);
    return desKey;
}

From source file:org.mayocat.security.DefaultCipher.java

private String crypt(String input, Mode mode) throws EncryptionException {
    if (Strings.isNullOrEmpty(this.configuration.getEncryptionKey())) {
        throw new EncryptionException("Invalid or missing cookie encryption key in configuration file. "
                + "You MUST specify a key in order to support cookie authentication.");
    }//from  w w  w . j  a  v a 2s. c  o m

    try {
        byte[] in = input.getBytes();

        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        byte[] keyBytes = this.configuration.getEncryptionKey().getBytes("UTF-8");
        DESKeySpec desKeySpec = new DESKeySpec(keyBytes);
        SecretKey key = keyFactory.generateSecret(desKeySpec);

        javax.crypto.Cipher cipher = javax.crypto.Cipher.getInstance("DES/ECB/PKCS5Padding");
        IvParameterSpec spec = null;
        if (cipher.getParameters() != null) {
            spec = cipher.getParameters().getParameterSpec(IvParameterSpec.class);
        }

        switch (mode) {
        case CRYPT:
        default:
            if (spec != null) {
                cipher.init(javax.crypto.Cipher.ENCRYPT_MODE, key, spec);
            } else {
                cipher.init(javax.crypto.Cipher.ENCRYPT_MODE, key);
            }
            byte[] encrypted = cipher.doFinal(in);
            return new String(Base64.encodeBase64(encrypted));
        case DECRYPT:
            if (spec != null) {
                cipher.init(javax.crypto.Cipher.DECRYPT_MODE, key, spec);
            } else {
                cipher.init(javax.crypto.Cipher.DECRYPT_MODE, key);
            }
            byte[] decrypted = cipher.doFinal(Base64.decodeBase64(in));
            return new String(decrypted);
        }

    } catch (BadPaddingException e) {
        this.logger.warn("Bad padding when attempting to decipher cookies. Key changed ?");
        throw new EncryptionException(e);
    } catch (Exception e) {
        this.logger.error("Fail to perform cookie crypt or decrypt operation", e);
        throw new EncryptionException(e);
    }
}

From source file:graphene.util.crypto.PasswordHash.java

/**
 * Computes the PBKDF2 hash of a password.
 * /* ww  w . j  a  v  a  2  s .c om*/
 * @param password
 *            the password to hash.
 * @param salt
 *            the salt
 * @param iterations
 *            the iteration count (slowness factor)
 * @param bytes
 *            the length of the hash to compute in bytes
 * @return the PBDKF2 hash of the password
 */
protected byte[] pbkdf2(final char[] password, final byte[] salt, final int iterations, final int bytes)
        throws NoSuchAlgorithmException, InvalidKeySpecException {
    final PBEKeySpec spec = new PBEKeySpec(password, salt, iterations, bytes * 8);
    final SecretKeyFactory skf = SecretKeyFactory.getInstance(PBKDF2_ALGORITHM);
    return skf.generateSecret(spec).getEncoded();
}