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:licenceexecuter.Encryptor.java

public static String encrypt(String key, String initVector, String value) {
    try {//from   w w w  .ja  v a2s .  c om
        IvParameterSpec iv = new IvParameterSpec(initVector.getBytes("UTF-8"));
        SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes("UTF-8"), "AES");

        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);

        byte[] encrypted = cipher.doFinal(value.getBytes());
        return Base64.encodeBase64String(encrypted);
    } catch (Exception ex) {
        ex.printStackTrace();
    }

    return null;
}

From source file:Main.java

private static byte[] encrypt(byte[] raw, byte[] clear) throws Exception {
    SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
    return cipher.doFinal(clear);
}

From source file:Logic.security.java

public static String symmetricEncrypt(String text, String secretKey) {
    byte[] raw;//  ww  w . j  av  a  2 s  .c  om
    String encryptedString;
    SecretKeySpec skeySpec;
    byte[] encryptText = text.getBytes();
    Cipher cipher;
    try {
        raw = Base64.decodeBase64(secretKey);
        skeySpec = new SecretKeySpec(raw, "AES");
        cipher = Cipher.getInstance("AES");
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
        encryptedString = Base64.encodeBase64String(cipher.doFinal(encryptText));
    } catch (Exception e) {
        e.printStackTrace();
        return "Error";
    }
    return encryptedString;
}

From source file:Main.java

/**
 * Decrypt data//  w w  w.ja  v  a 2 s.c o  m
 * @param secretKey -   a secret key used for decryption
 * @param data      -   data to decrypt
 * @return   Decrypted data
 * @throws Exception
 */
public static String decipher(String secretKey, String data) throws Exception {
    // Key has to be of length 8
    if (secretKey == null || secretKey.length() != 8)
        throw new Exception("Invalid key length - 8 bytes key needed!");

    SecretKey key = new SecretKeySpec(secretKey.getBytes(), ALGORITHM);
    Cipher cipher = Cipher.getInstance(ALGORITHM);
    cipher.init(Cipher.DECRYPT_MODE, key);

    return new String(cipher.doFinal(toByte(data)));
}

From source file:com.sysfore.pos.licensemanagement.LicenceManagementUtil.java

public static String encrypt(String strToEncrypt) {
    try {//from   w  ww .  java2  s. com
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
        final SecretKeySpec secretKey = new SecretKeySpec(key, "AES");
        cipher.init(Cipher.ENCRYPT_MODE, secretKey);

        final String encryptedString = Base64.encodeBase64String(cipher.doFinal(strToEncrypt.getBytes()));
        return encryptedString;
    } catch (Exception e) {
        log.error("Error while encrypting", e);
    }
    return null;

}

From source file:Main.java

public static int generate(byte[] key, long t, int digits) {
    int r = 0;/*from   w  w w . ja  va  2 s  .  c  o  m*/
    try {
        t /= 30;
        byte[] data = new byte[8];
        long value = t;
        for (int i = 8; i-- > 0; value >>>= 8) {
            data[i] = (byte) value;
        }

        SecretKeySpec signKey = new SecretKeySpec(key, SHA1);
        Mac mac = Mac.getInstance(SHA1);
        mac.init(signKey);
        byte[] hash = mac.doFinal(data);

        int offset = hash[20 - 1] & 0xF;

        long truncatedHash = 0;
        for (int i = 0; i < 4; ++i) {
            truncatedHash <<= 8;
            truncatedHash |= (hash[offset + i] & 0xFF);
        }

        truncatedHash &= 0x7FFFFFFF;
        truncatedHash %= Math.pow(10, digits);

        r = (int) truncatedHash;
    }

    catch (Exception e) {
    }

    return r;
}

From source file:encryptdecrypt.util.Security.java

public static String encrypt(String strToEncrypt) {
    try {// w  w w.  ja  v  a2 s  .  c  om
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
        final SecretKeySpec secretKey = new SecretKeySpec(key, "AES");
        cipher.init(Cipher.ENCRYPT_MODE, secretKey);
        return new String(Base64.encodeBase64(cipher.doFinal(strToEncrypt.getBytes())));
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

From source file:Main.java

private static byte[] Des(byte[] byteData, byte[] byteKey, int opmode)
        throws InvalidKeyException, NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException,
        IllegalBlockSizeException, BadPaddingException {
    Cipher cipher = null;//from  w  ww .j av  a  2s.c o m
    try {
        SecretKeySpec desKey = new SecretKeySpec(byteKey, "DES");

        cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
        cipher.init(opmode, desKey);

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

From source file:Main.java

/**
 * Encrypt data// ww w. ja v a  2s.  co m
 * @param secretKey   -   a secret key used for encryption
 * @param data      -   data to encrypt
 * @return   Encrypted data
 * @throws Exception
 */
public static String cipher(String secretKey, String data) throws Exception {
    // Key has to be of length 8
    if (secretKey == null || secretKey.length() != 8)
        throw new Exception("Invalid key length - 8 bytes key needed!");

    SecretKey key = new SecretKeySpec(secretKey.getBytes(), ALGORITHM);
    Cipher cipher = Cipher.getInstance(ALGORITHM);
    cipher.init(Cipher.ENCRYPT_MODE, key);

    return toHex(cipher.doFinal(data.getBytes()));
}

From source file:br.com.zeros.tipsandtricks.cryto.EncryptionStrings.java

private static Key generateKey() throws Exception {
    byte[] keyAsBytes;
    keyAsBytes = myEncryptionKey.getBytes(UNICODE_FORMAT);
    Key key = new SecretKeySpec(keyAsBytes, ALGORITHM);
    return key;//from ww  w  . j a  v a 2 s.c o  m
}