Example usage for javax.crypto.spec SecretKeySpec SecretKeySpec

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:Main.java

private static byte[] decrypt(byte[] key, byte[] encrypted) throws Exception {
    SecretKeySpec skeySpec = new SecretKeySpec(key, "AES");
    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.DECRYPT_MODE, skeySpec, new IvParameterSpec(new byte[cipher.getBlockSize()]));
    return cipher.doFinal(encrypted);
}

From source file:Main.java

private static byte[] decrypt(byte[] raw, byte[] encrypted) throws Exception {
    SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.DECRYPT_MODE, skeySpec, new IvParameterSpec(new byte[cipher.getBlockSize()]));
    byte[] decrypted = cipher.doFinal(encrypted);
    return decrypted;
}

From source file:Main.java

private static Key toKey(byte[] key) throws Exception {
    SecretKey secretKey = new SecretKeySpec(key, ALGORITHM);
    return secretKey;
}

From source file:Main.java

public static byte[] decrypt(byte[] key, byte[] input) throws Exception {
    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(key, "AES"));
    byte[] decrypted = cipher.doFinal(input);
    return decrypted;
}

From source file:Main.java

public static byte[] encrypt(byte[] key, byte[] input) throws Exception {
    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(key, "AES"));
    byte[] encrypted = cipher.doFinal(input);
    return encrypted;
}

From source file:Main.java

public static String encodeHmac(String key, String data) throws Exception {
    Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
    SecretKeySpec secret_key = new SecretKeySpec(key.getBytes(), "HmacSHA256");
    sha256_HMAC.init(secret_key);//from   www.j  av  a 2s  .  c  om

    return bytesToHex(sha256_HMAC.doFinal(data.getBytes()));
}

From source file:Main.java

private static byte[] Aes(byte[] byteData, byte[] byteKey, int opmode) throws Exception {
    Cipher cipher = null;//from www.jav  a  2  s .c  om
    try {
        SecretKeySpec aesKey = new SecretKeySpec(byteKey, "AES");
        cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
        cipher.init(opmode, aesKey);

        return cipher.doFinal(byteData);
    } finally {
        cipher = null;
    }
}

From source file:Main.java

static byte[] encodeHMAC(String key, byte[] message) throws NoSuchAlgorithmException, InvalidKeyException {
    SecretKeySpec keySpec = new SecretKeySpec(key.getBytes(), "RAW");

    Mac mac = Mac.getInstance("HmacSHA1");
    mac.init(keySpec);// w  ww  . jav a  2 s. co m
    return mac.doFinal(message);
}

From source file:Main.java

private static Key generateKey() throws Exception {
    if (key == null)
        key = new SecretKeySpec(keyValue, ALGO);

    return key;//from www.j av  a2  s .  c o m
}

From source file:Main.java

public static String encrypt(String data, String key) throws Exception {
    try {/*from w  w  w.  ja va  2 s  .  co  m*/
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
        byte[] base64Key = Base64.decode(key, Base64.DEFAULT);
        SecretKeySpec keyspec = new SecretKeySpec(base64Key, "AES");
        cipher.init(Cipher.ENCRYPT_MODE, keyspec);
        byte[] encrypted = cipher.doFinal(data.getBytes("UTF-8"));
        return Base64.encodeToString(encrypted, Base64.DEFAULT);
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}