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:ar.gob.ambiente.servicios.gestionpersonas.entidades.util.CriptPass.java

/**
 * Mtodo para desencriptar una contrasea encriptada
 * @param textoEncriptado/*from   ww w.ja v  a  2 s. c  om*/
 * @return
 * @throws Exception 
 */
public static String desencriptar(String textoEncriptado) throws Exception {

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

    try {
        byte[] message = Base64.decodeBase64(textoEncriptado.getBytes("utf-8"));
        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 decipher = Cipher.getInstance("DESede");
        decipher.init(Cipher.DECRYPT_MODE, key);

        byte[] plainText = decipher.doFinal(message);

        base64EncryptedString = new String(plainText, "UTF-8");

    } catch (UnsupportedEncodingException | NoSuchAlgorithmException | NoSuchPaddingException
            | InvalidKeyException | IllegalBlockSizeException | BadPaddingException ex) {
        System.out.println(ex.getMessage());
    }
    return base64EncryptedString;
}

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From source file:illab.nabal.util.SecurityHelper.java

/**
 * Get HMACSHA1-encoded OAuth 1.0a signature string.
 * // ww  w . j a  va2s . c o m
 * @param secretKey - secret key to encode basestring with
 * @param baseString - signature base string 
 * @return oauthSignature - HMAC-SHA1 encoded signature string
 * @throws Exception
 */
public static String getHmacSha1Signature(String secretKey, String baseString) throws Exception {
    String oauthSignature = null;

    // #################### IMPORTANT ####################
    // the secret key is the concatenated values (each first encoded per Parameter 
    // Encoding) of the Consumer Secret and Token Secret, separated by an '&' character 
    // (ASCII code 38) even if empty.

    if (StringHelper.isAllFull(secretKey, baseString) == true) {
        byte[] keyBytes = secretKey.getBytes(HTTP.UTF_8);
        SecretKey keySpec = new SecretKeySpec(keyBytes, HMAC_SHA1);
        Mac mac = Mac.getInstance(HMAC_SHA1);
        mac.init(keySpec);
        oauthSignature = new String(Base64.encode(mac.doFinal(baseString.getBytes(HTTP.UTF_8)), Base64.DEFAULT),
                HTTP.UTF_8).trim();
    }
    return oauthSignature;
}

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From source file:Pusher.java

/**
 * Returns a HMAC/SHA256 representation of the given string
 * @param data//  w  w  w .  j a v a 2  s .com
 * @return
 */
private static String hmacsha256Representation(String data) {
    try {
        // Create the HMAC/SHA256 key from application secret
        final SecretKeySpec signingKey = new SecretKeySpec(pusherApplicationSecret.getBytes(), "HmacSHA256");

        // Create the message authentication code (MAC)
        final Mac mac = Mac.getInstance("HmacSHA256");
        mac.init(signingKey);

        //Process and return data
        byte[] digest = mac.doFinal(data.getBytes("UTF-8"));
        digest = mac.doFinal(data.getBytes());
        //Convert to string
        BigInteger bigInteger = new BigInteger(1, digest);
        return String.format("%0" + (digest.length << 1) + "x", bigInteger);
    } catch (NoSuchAlgorithmException nsae) {
        //We should never come here, because GAE has HMac SHA256
        throw new RuntimeException("No HMac SHA256 algorithm");
    } catch (UnsupportedEncodingException e) {
        //We should never come here, because UTF-8 should be available
        throw new RuntimeException("No UTF-8");
    } catch (InvalidKeyException e) {
        throw new RuntimeException("Invalid key exception while converting to HMac SHA256");
    }
}

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From source file:cl.whyem.testsutilityproject.otpgenerator.KeyBase.java

protected SecretKeySpec secret(byte[] key) {
    return new SecretKeySpec(key, "RAW");
}

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From source file:com.vmware.o11n.plugin.crypto.service.CryptoEncryptionService.java

/**
 * AES Encryption CBC Mode with PKCS5 Padding
 *
 * @param dataB64 Data to encrypt Base64 encoded
 * @param secretB64 Encryption secret Base64 encoded. For AES128 this should be 128 bits (16 bytes) long. For AES256 this should be 256 bits (32 bytes) long.
 * @param ivB64 Initialization Vector Base64 encoded. 16 bytes long
 * @return Encrypted data Base64 Encoded
 * @throws NoSuchAlgorithmException/*from   w w  w.j ava2  s. c o m*/
 * @throws NoSuchPaddingException
 * @throws InvalidKeyException
 * @throws InvalidAlgorithmParameterException
 * @throws IOException
 * @throws BadPaddingException
 * @throws IllegalBlockSizeException
 */
public String aesEncrypt(String dataB64, String secretB64, String ivB64)
        throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException,
        InvalidAlgorithmParameterException, IllegalBlockSizeException, BadPaddingException {
    String encryptedB64 = null;

    final byte[] dataBytes = Base64.decodeBase64(dataB64);
    final byte[] secretBytes = Base64.decodeBase64(secretB64);
    final byte[] ivBytes = Base64.decodeBase64(ivB64);
    final Cipher cipher = Cipher.getInstance(AES_CIPHER);

    cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(secretBytes, "AES"),
            new IvParameterSpec(ivBytes, 0, cipher.getBlockSize()));

    encryptedB64 = Base64.encodeBase64String(cipher.doFinal(dataBytes));
    return encryptedB64;
}

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From source file:net.jingx.main.Main.java

public static String computePin(String secret, Long counter) {
    if (secret == null || secret.length() == 0) {
        return "Null or empty secret";
    }//  ww w  .  ja va  2  s .c o  m
    try {
        final byte[] keyBytes = Base32String.decode(secret);
        Mac mac = Mac.getInstance("HMACSHA1");
        mac.init(new SecretKeySpec(keyBytes, ""));
        PasscodeGenerator pcg = new PasscodeGenerator(mac);
        if (counter == null) { // time-based totp
            return pcg.generateTimeoutCode();
        } else { // counter-based hotp
            return pcg.generateResponseCode(counter);
        }
    } catch (GeneralSecurityException e) {
        return "General security exception";
    } catch (DecodingException e) {
        return "Decoding exception";
    }
}

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From source file:com.opentok.test.Helpers.java

private static String signData(String data, String key)
        throws SignatureException, NoSuchAlgorithmException, InvalidKeyException {
    SecretKeySpec signingKey = new SecretKeySpec(key.getBytes(), HMAC_SHA1_ALGORITHM);
    Mac mac = Mac.getInstance(HMAC_SHA1_ALGORITHM);
    mac.init(signingKey);/*w  ww. ja  v  a  2  s  . com*/
    return toHexString(mac.doFinal(data.getBytes()));
}

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From source file:edu.kit.dama.util.CryptUtil.java

/**
 * Hidden constuctor.//from w  w  w .ja  v a 2 s.co  m
 *
 * @param pSecret The secret used for the SecretKeySpec. The secret must
 * have a length of 128, 192 or 256 bits.
 */
private CryptUtil(byte[] pSecret) {
    try {
        SecretKeySpec skeySpec = new SecretKeySpec(pSecret, "AES");
        deCipher = Cipher.getInstance("AES/CBC/PKCS5Padding", new BouncyCastleProvider());
        deCipher.init(Cipher.DECRYPT_MODE, skeySpec, new IvParameterSpec(new byte[16]));
        enCipher = Cipher.getInstance("AES/CBC/PKCS5Padding", new BouncyCastleProvider());
        enCipher.init(Cipher.ENCRYPT_MODE, skeySpec, new IvParameterSpec(new byte[16]));
    } catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException
            | InvalidAlgorithmParameterException e) {
        throw new IllegalStateException("Failed to create cipher instances.", e);
    }
}

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From source file:com.wso2telco.gsma.authenticators.cryptosystem.AESencrp.java

/**
 * Generate key./*  ww w. j  ava2 s  .c  om*/
 *
 * @return the key
 * @throws Exception the exception
 */
private static Key generateKey() throws Exception {
    key = configurationService.getDataHolder().getMobileConnectConfig().getSmsConfig().getAesKey();
    keyValue = key.getBytes(Charset.forName("UTF-8"));
    Key key = new SecretKeySpec(keyValue, ALGO);
    return key;
}

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From source file:io.pivotal.cla.security.GitHubSignature.java

private byte[] sign(String body, String token) throws NoSuchAlgorithmException, InvalidKeyException {
    SecretKeySpec signingKey = new SecretKeySpec(token.getBytes(), HMAC_SHA1_ALGORITHM);
    Mac mac = Mac.getInstance(HMAC_SHA1_ALGORITHM);
    mac.init(signingKey);/*from   w w  w . j  av  a  2 s  .co m*/
    byte[] expectedBytes = mac.doFinal(body.getBytes());
    return expectedBytes;
}

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