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

public static byte[] encrypt(byte[] input, byte[] key) throws NoSuchPaddingException, NoSuchAlgorithmException,
        InvalidKeyException, BadPaddingException, IllegalBlockSizeException {
    SecretKeySpec keySpec = new SecretKeySpec(key, "AES");
    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.ENCRYPT_MODE, keySpec);
    return cipher.doFinal(input);
}

From source file:Main.java

public static byte[] decrypt(byte[] input, byte[] key) throws InvalidKeyException, NoSuchPaddingException,
        NoSuchAlgorithmException, BadPaddingException, IllegalBlockSizeException {
    SecretKeySpec keySpec = new SecretKeySpec(key, "AES");
    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.DECRYPT_MODE, keySpec);
    return cipher.doFinal(input);
}

From source file:Main.java

public static String hmacSha256Encode(String key, String data)
        throws NoSuchAlgorithmException, InvalidKeyException, UnsupportedEncodingException {
    Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
    SecretKeySpec secret_key = new SecretKeySpec(key.getBytes("utf-8"), "HmacSHA256");
    sha256_HMAC.init(secret_key);/*  ww w.  j  av a 2  s  . c o m*/
    return asHex(sha256_HMAC.doFinal(data.getBytes("utf-8")));
}

From source file:Main.java

private static SecretKeySpec createKey(String key) {
    byte[] data = null;
    if (key == null) {
        key = "";
    }/*w  w w .j  ava  2 s.c om*/
    StringBuffer sb = new StringBuffer(16);
    sb.append(key);
    while (sb.length() < 16) {
        sb.append("0");
    }
    if (sb.length() > 16) {
        sb.setLength(16);
    }
    try {
        data = sb.toString().getBytes("UTF-8");
    } catch (Exception e) {
        e.printStackTrace();
    }
    return new SecretKeySpec(data, "AES");
}

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);
    return cipher.doFinal(encrypted);
}

From source file:Main.java

/**
 * This method generates a byte array corresponding to the
 * signed secret using value a signing operator
 * //ww w .ja  va  2  s. c  o m
 * @param   value   the value used to sign the key
 * @param   secretKey   the key to sign
 * @return   a byte array corresponding to the raw HMAC-SHA1 hash
 */
public static byte[] hmacSha1(byte[] value, byte[] secretKey) throws RuntimeException {
    try {
        SecretKeySpec signingKey = new SecretKeySpec(secretKey, HMAC_ALGORITHM);
        Mac mac = Mac.getInstance(HMAC_ALGORITHM);
        mac.init(signingKey);
        byte[] rawHmac = mac.doFinal(value);
        return (rawHmac);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

From source file:com.jeet.s3.util.HashUtil.java

public static String generateFileHash(File file) {
    String hash = "";
    try {//  www  . j av a2s .  co  m
        Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
        SecretKeySpec secret_key = new SecretKeySpec(Constants.HASH_SECRET.getBytes(), "HmacSHA256");
        sha256_HMAC.init(secret_key);

        hash = Base64.encodeBase64String(sha256_HMAC.doFinal(IOUtils.toByteArray(new FileInputStream(file))));
    } catch (Exception ex) {
        System.out.println("Error in generating hash.");
    }
    return hash;
}

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);
    byte[] decrypted = cipher.doFinal(encrypted);
    return decrypted;
}

From source file:Main.java

public static byte[] encrypt(String clearText) {
    SecretKeySpec keySpec = new SecretKeySpec(keyBytes, "AES");
    Cipher cipher = null;//from  ww w.ja v a  2  s . c om
    byte[] cipherText = null;

    try {
        // init cipher
        cipher = Cipher.getInstance("AES");
        cipher.init(Cipher.ENCRYPT_MODE, keySpec);
        cipherText = cipher.doFinal(clearText.getBytes());
    } catch (IllegalBlockSizeException e) {
        e.printStackTrace();
    } catch (BadPaddingException e) {
        e.printStackTrace();
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (NoSuchPaddingException e) {
        e.printStackTrace();
    }
    return Base64.encode(cipherText, 10);
}

From source file:Main.java

public static String decrypt(byte[] cipherText) {
    SecretKeySpec keySpec = new SecretKeySpec(keyBytes, "AES");

    Cipher cipher = null;/*from  w  w w  . ja  va2s  .  c o m*/
    byte[] clearText = null;

    try {
        // init cipher
        cipher = Cipher.getInstance("AES");
        cipher.init(Cipher.DECRYPT_MODE, keySpec);
        clearText = cipher.doFinal(Base64.decode(new String(cipherText), 10));
    } catch (IllegalBlockSizeException e) {
        e.printStackTrace();
    } catch (BadPaddingException e) {
        e.printStackTrace();
    } catch (NoSuchPaddingException e) {
        e.printStackTrace();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (InvalidKeyException e) {// TODO Auto-generated catch block
        e.printStackTrace();
    }

    return new String(clearText);
}