Example usage for javax.crypto SecretKey getAlgorithm

Introduction

In this page you can find the example usage for javax.crypto SecretKey getAlgorithm.

Prototype

public String getAlgorithm();

Source Link

Document

Returns the standard algorithm name for this key.

Usage

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

/**
 * Encrypts 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 valueToEncrypt - text to encrypt
 * @return an encrypted, Base64 encoded text
 *///from w w w  .  j  ava 2s.  co m
public static String encryptString(String valueToEncrypt) {
    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.ENCRYPT_MODE, secretKey, paramSpec);
        // begin encrypting...
        byte[] byteToEncrypt = valueToEncrypt.getBytes("UTF8");
        byte[] encrypted = cipher.doFinal(byteToEncrypt);
        output = new Base64().encodeToString(encrypted);
    } catch (Exception ex) {
        Logger.getLogger(PasswordProcessor.class.getName()).log(Level.SEVERE, null, ex);
    }
    return output;
}

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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//from  w w  w . j  av a 2 s  .  c o m
 */
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;
}

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From source file:be.fedict.eid.idp.model.CryptoUtil.java

public static Mac getMac(byte[] hmacSecret) throws InvalidKeyException {

    SecretKey macKey = new SecretKeySpec(hmacSecret, "HmacSHA1");
    Mac mac;/*w ww. j a  va2 s  . c  o  m*/
    try {
        mac = Mac.getInstance(macKey.getAlgorithm());
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException("HMAC algo not available: " + e.getMessage());
    }
    mac.init(macKey);
    return mac;
}

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From source file:be.fedict.eid.applet.service.impl.UserIdentifierUtil.java

/**
 * Gives back a non-reversible citizen identifier (NRCID).
 * //from w  ww. ja  va2s  .  com
 * @param userId
 *            the primary user identifier, i.e. the national registry
 *            number.
 * @param orgId
 *            the optional organization identifier.
 * @param appId
 *            the optional application identifier.
 * @param secret
 *            the application specific secret. Should be at least 128 bit
 *            long. Encoded in hexadecimal format.
 * @return
 */
public static String getNonReversibleCitizenIdentifier(String userId, String orgId, String appId,
        String secret) {
    if (null == secret) {
        throw new IllegalArgumentException("secret key is null");
    }
    /*
     * Avoid XML formatting issues introduced by some web.xml XML editors.
     */
    secret = secret.trim();
    if (null != orgId) {
        orgId = orgId.trim();
    } else {
        LOG.warn("it is advised to use an orgId");
    }
    if (null != appId) {
        appId = appId.trim();
    } else {
        LOG.warn("it is advised to use an appId");
    }

    /*
     * Decode the secret key.
     */
    byte[] secretKey;
    try {
        secretKey = Hex.decodeHex(secret.toCharArray());
    } catch (DecoderException e) {
        LOG.error("secret is not hexadecimal encoded: " + e.getMessage());
        throw new IllegalArgumentException("secret is not hexadecimal encoded");
    }
    if ((128 / 8) > secretKey.length) {
        /*
         * 128 bit is seen as secure these days.
         */
        LOG.warn("secret key is too short");
        throw new IllegalArgumentException("secret key is too short");
    }

    /*
     * Construct the HMAC input sequence.
     */
    String input = userId;
    if (null != appId) {
        input += appId;
    }
    if (null != orgId) {
        input += orgId;
    }
    byte[] inputData = input.getBytes();

    SecretKey macKey = new SecretKeySpec(secretKey, HMAC_ALGO);
    Mac mac;
    try {
        mac = Mac.getInstance(macKey.getAlgorithm());
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException("HMAC algo not available: " + e.getMessage());
    }
    try {
        mac.init(macKey);
    } catch (InvalidKeyException e) {
        LOG.error("invalid secret key: " + e.getMessage(), e);
        throw new RuntimeException("invalid secret");
    }
    mac.update(inputData);
    byte[] resultHMac = mac.doFinal();
    String resultHex = new String(Hex.encodeHex(resultHMac)).toUpperCase();
    return resultHex;
}

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From source file:com.swdouglass.joid.Crypto.java

private static byte[] hmacShaX(String keySpec, byte[] key, byte[] text)
        throws InvalidKeyException, NoSuchAlgorithmException {
    SecretKey sk = new SecretKeySpec(key, keySpec);
    Mac m = Mac.getInstance(sk.getAlgorithm());
    m.init(sk);//w  ww .j ava 2  s .co  m
    return m.doFinal(text);
}

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From source file:net.nicholaswilliams.java.licensing.encryption.Encryptor.java

private static Cipher getEncryptionCipher(SecretKey secretKey) {
    try {/*from w  ww . ja  v  a  2 s.c o m*/
        Cipher cipher = Cipher.getInstance(secretKey.getAlgorithm());
        cipher.init(Cipher.ENCRYPT_MODE, secretKey, Encryptor.random);
        return cipher;
    } catch (NoSuchAlgorithmException e) {
        throw new AlgorithmNotSupportedException("AES With SHA-1 digest", e);
    } catch (NoSuchPaddingException e) {
        throw new RuntimeException(e.getMessage(), e);
    } catch (InvalidKeyException e) {
        throw new InappropriateKeyException(e.getMessage(), e);
    }
}

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From source file:net.nicholaswilliams.java.licensing.encryption.Encryptor.java

private static Cipher getDecryptionCipher(SecretKey secretKey) {
    try {/*from   www  .ja  va  2s  .c  o  m*/
        Cipher cipher = Cipher.getInstance(secretKey.getAlgorithm());
        cipher.init(Cipher.DECRYPT_MODE, secretKey, Encryptor.random);
        return cipher;
    } catch (NoSuchAlgorithmException e) {
        throw new AlgorithmNotSupportedException("AES With SHA-1 digest", e);
    } catch (NoSuchPaddingException e) {
        throw new RuntimeException(e.getMessage(), e);
    } catch (InvalidKeyException e) {
        throw new InappropriateKeyException(e.getMessage(), e);
    }
}

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From source file:eap.util.EDcodeUtil.java

private static byte[] hmac(byte[] data, byte[] key, String algorithm) {
    try {//from  w w w.ja va2s.  c  om
        SecretKey secretKey = new SecretKeySpec(key, algorithm);

        Mac mac = Mac.getInstance(secretKey.getAlgorithm(), provider);
        mac.init(secretKey);

        return mac.doFinal(data);
    } catch (NoSuchAlgorithmException e) {
        throw new IllegalArgumentException("No such algorithm [" + algorithm + "]");
    } catch (InvalidKeyException e) {
        throw new IllegalArgumentException(e.getMessage(), e);
    }
}

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From source file:DesEncrypter.java

DesEncrypter(String passPhrase) throws Exception {
    int iterationCount = 2;
    KeySpec keySpec = new PBEKeySpec(passPhrase.toCharArray(), salt, iterationCount);
    SecretKey key = SecretKeyFactory.getInstance("PBEWithMD5AndDES").generateSecret(keySpec);
    ecipher = Cipher.getInstance(key.getAlgorithm());
    dcipher = Cipher.getInstance(key.getAlgorithm());

    AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt, iterationCount);

    ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
    dcipher.init(Cipher.DECRYPT_MODE, key, paramSpec);
}

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From source file:DesEncrypter.java

private DesEncrypter(String passPhrase) {
    try {/*from  ww w .j av a  2 s  .  co m*/
        // Create the key
        KeySpec keySpec = new PBEKeySpec(passPhrase.toCharArray(), salt, iterationCount);
        SecretKey key = SecretKeyFactory.getInstance("PBEWithMD5AndDES").generateSecret(keySpec);
        ecipher = Cipher.getInstance(key.getAlgorithm());
        dcipher = Cipher.getInstance(key.getAlgorithm());

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

        // Create the ciphers
        ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
        dcipher.init(Cipher.DECRYPT_MODE, key, paramSpec);
    } catch (java.security.InvalidAlgorithmParameterException e) {
    } catch (java.security.spec.InvalidKeySpecException e) {
    } catch (javax.crypto.NoSuchPaddingException e) {
    } catch (java.security.NoSuchAlgorithmException e) {
    } catch (java.security.InvalidKeyException e) {
    }
}

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