Example usage for javax.crypto.spec SecretKeySpec SecretKeySpec

List of usage examples for javax.crypto.spec SecretKeySpec SecretKeySpec

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Introduction

In this page you can find the example usage for javax.crypto.spec SecretKeySpec SecretKeySpec.

Prototype

public SecretKeySpec(byte[] key, String algorithm)

Source Link

Document

Constructs a secret key from the given byte array.

Usage

From source file:com.avbravo.avbravoutils.crypto.Encriptador.java

public static String encrypt(String key, String cleartext) throws Exception {

    Cipher cipher = Cipher.getInstance(cI);
    SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes(), alg);
    IvParameterSpec ivParameterSpec = new IvParameterSpec(iv.getBytes());
    cipher.init(Cipher.ENCRYPT_MODE, skeySpec, ivParameterSpec);
    byte[] encrypted = cipher.doFinal(cleartext.getBytes());
    return new String(encodeBase64(encrypted));
}

From source file:Main.java

public static byte[] DESTemplet(byte[] data, byte[] key, String algorithm, String transformation,
        boolean isEncrypt) {
    try {//  w ww.  j ava 2  s .c  o m
        SecretKeySpec keySpec = new SecretKeySpec(key, algorithm);
        Cipher cipher = Cipher.getInstance(transformation);
        SecureRandom random = new SecureRandom();
        cipher.init(isEncrypt ? Cipher.ENCRYPT_MODE : Cipher.DECRYPT_MODE, keySpec, random);
        return cipher.doFinal(data);
    } catch (Throwable e) {
        e.printStackTrace();
    }
    return null;
}

From source file:Main.java

/** 
 * byte[] key to java.security.Key/*from w  ww  . j  ava2s .  c  o  m*/
 * @param key byte[] key 
 * @return Key java.security.Key 
 * */
public static Key byteArrayKeyToSecurityKey(byte[] key) throws Exception {

    return new SecretKeySpec(key, KEY_ALGORITHM);

}

From source file:Main.java

/***
 * Computes RFC 2104-compliant HMAC signature. This can be used to sign the Amazon S3
 * request urls/*from  w  w  w. jav  a2  s  . c o m*/
 * 
 * @param data The data to be signed.
 * @param key The signing key.
 * @return The Base64-encoded RFC 2104-compliant HMAC signature.
 * @throws SignatureException when signature generation fails
 */
public static String getHMac(String data, String key) throws SignatureException {

    if (data == null) {
        throw new NullPointerException("Data to be signed cannot be null");
    }

    String result = null;
    try {

        final String HMAC_SHA1_ALGORITHM = "HmacSHA1";

        // get an hmac_sha1 key from the raw key bytes
        SecretKeySpec signingKey = new SecretKeySpec(key.getBytes(), HMAC_SHA1_ALGORITHM);

        // get an hmac_sha1 Mac instance &
        // initialize with the signing key
        Mac mac = Mac.getInstance(HMAC_SHA1_ALGORITHM);
        mac.init(signingKey);

        // compute the hmac on input data bytes
        byte[] digest = mac.doFinal(data.getBytes());

        if (digest != null) {
            // Base 64 Encode the results
            result = Base64.encodeToString(digest, Base64.NO_WRAP);
        }

    } catch (Exception e) {
        throw new SignatureException("Failed to generate HMAC : " + e.getMessage());
    }

    return result;
}

From source file:lib.clases_cripto.java

public static String Encriptar(String texto) {

    String secretKey = "qualityinfosolutions"; //llave para encriptar datos
    String base64EncryptedString = "";

    try {//w ww .  ja  v a 2s  .com

        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] digestOfPassword = md.digest(texto.getBytes("utf-8"));
        byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24);
        Md5Crypt.md5Crypt(keyBytes);
        SecretKey key = new SecretKeySpec(keyBytes, "DESede");
        Cipher cipher = Cipher.getInstance("DESede");
        cipher.init(Cipher.ENCRYPT_MODE, key);
        byte[] plainTextBytes = texto.getBytes("utf-8");
        byte[] buf = cipher.doFinal(plainTextBytes);
        byte[] base64Bytes = Base64.encodeBase64(buf);

        base64EncryptedString = new String(base64Bytes);

    } catch (Exception ex) {
    }
    return base64EncryptedString;
}

From source file:Main.java

public static byte[] desTemplate(byte[] data, byte[] key, String algorithm, String transformation,
        boolean isEncrypt) {
    if (data == null || data.length == 0 || key == null || key.length == 0)
        return null;
    try {//from   w  w w . j a  va  2 s .  c o  m
        SecretKeySpec keySpec = new SecretKeySpec(key, algorithm);
        Cipher cipher = Cipher.getInstance(transformation);
        SecureRandom random = new SecureRandom();
        cipher.init(isEncrypt ? Cipher.ENCRYPT_MODE : Cipher.DECRYPT_MODE, keySpec, random);
        return cipher.doFinal(data);
    } catch (Throwable e) {
        e.printStackTrace();
        return null;
    }
}

From source file:Main.java

/**
 * Generates SHA256 hash of the password which is used as key
 *
 * @param password used to generated key
 * @return SHA256 of the password//from   w ww .  j a v  a  2 s  . c om
 */
private static SecretKeySpec generateKey(final String password)
        throws NoSuchAlgorithmException, UnsupportedEncodingException {
    final MessageDigest digest = MessageDigest.getInstance(HASH_ALGORITHM);
    byte[] bytes = password.getBytes("UTF-8");
    digest.update(bytes, 0, bytes.length);
    byte[] key = digest.digest();

    log("SHA-256 key ", key);

    SecretKeySpec secretKeySpec = new SecretKeySpec(key, "AES");
    return secretKeySpec;
}

From source file:Main.java

public static byte[] sha256(final byte[] message, final byte[] key) {
    final Mac mac;
    try {//from w  w  w . ja v  a2s  .  c  o  m
        mac = Mac.getInstance("HmacSHA256");
        mac.init(new SecretKeySpec(key, "HmacSHA256"));
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
    return mac.doFinal(message);
}

From source file:com.basp.trabajo_al_minuto.model.business.BusinessSecurity.java

/**
 * Se encarga de encriptar la contrasea ingresada por el usuario *
 *//*from w ww .j ava  2  s.  co  m*/
public static String encrypt(String value) throws BusinessException {
    String secretKey = "e-business";
    String base64EncryptedString = "";
    try {
        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] digestOfPassword = md.digest(secretKey.getBytes("utf-8"));
        byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24);
        SecretKey key = new SecretKeySpec(keyBytes, "DESede");
        Cipher cipher = Cipher.getInstance("DESede");
        cipher.init(Cipher.ENCRYPT_MODE, key);
        byte[] plainTextBytes = value.getBytes("utf-8");
        byte[] buf = cipher.doFinal(plainTextBytes);
        byte[] base64Bytes = Base64.encodeBase64(buf);
        base64EncryptedString = new String(base64Bytes);
    } catch (Exception ex) {
        throw new BusinessException(ex);
    }
    return base64EncryptedString;
}

From source file:de.scrubstudios.srvmon.notificator.classes.Crypt.java

public static String encrypt(String key, String data) {
    byte[] encryptedData = null;
    SecretKeySpec keySpec = new SecretKeySpec(key.getBytes(), "AES");

    try {/*from www  .ja v  a 2 s .  c o m*/
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");

        cipher.init(Cipher.ENCRYPT_MODE, keySpec);
        encryptedData = cipher.doFinal(data.getBytes());

        byte[] encr64 = Base64.encodeBase64(encryptedData);

        //System.out.println(new String(encr64));

        return new String(encr64);
    } catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException | IllegalBlockSizeException
            | BadPaddingException ex) {
        Logger.getLogger(Crypt.class.getName()).log(Level.SEVERE, null, ex);
    }

    return null;
}