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:net.dbjorge.jthumbor.ThumborUtils.java

/**
 * Encrypts the given plaintext with the given key according to AES-128 in ECB mode.
 *
 * This function performs NO padding on either of the key or plaintext. It REQUIRES that both
 * key and plaintext be non-null, non-empty, and have sizes which are multiples of 16.
 *///ww w  .  ja v a  2  s  .com
public static byte[] aesEncrypt(String key, String plaintext) {
    try {
        SecretKeySpec keySpec = new SecretKeySpec(key.getBytes(), "AES");
        mAesCipher.init(Cipher.ENCRYPT_MODE, keySpec);
        return mAesCipher.doFinal(plaintext.getBytes());
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

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From source file:Main.java

public static String completeJweFromSIM(String jweSIM) {
    // android.os.Debug.waitForDebugger();

    try {/*from   ww w .j  av  a2s  . com*/
        if (jweSIM != null && jweSIM.length() > 0) {
            String parts[] = jweSIM.split("\\.");
            ;
            if (parts != null && parts.length == 5) {
                // retrieve hmac key
                byte hmac_key[] = Base64.decode(parts[4], Base64.URL_SAFE);
                if (hmac_key != null && hmac_key.length == 16) {
                    // init hash instance
                    Mac hmac = Mac.getInstance("HmacSHA256", "SC");
                    hmac.init(new SecretKeySpec(hmac_key, "HmacSHA256"));

                    byte[] aad = parts[0].getBytes();
                    long al = aad.length * 8;
                    byte[] iv_key = decodeB64(parts[2]);
                    byte[] cryptedBytes = decodeB64(parts[3]);

                    // build data to hash
                    byte[] hmacData = new byte[aad.length + iv_key.length + cryptedBytes.length + 8];
                    int offset = 0;
                    System.arraycopy(aad, offset, hmacData, 0, aad.length);
                    offset += aad.length;
                    System.arraycopy(iv_key, 0, hmacData, offset, iv_key.length);
                    offset += iv_key.length;
                    System.arraycopy(cryptedBytes, 0, hmacData, offset, cryptedBytes.length);
                    offset += cryptedBytes.length;
                    ByteBuffer buffer = ByteBuffer.allocate(8);
                    buffer.putLong(al);
                    System.arraycopy(buffer.array(), 0, hmacData, offset, 8);

                    // compute hac value
                    byte[] hmacValue = hmac.doFinal(hmacData);
                    // authentication tag
                    byte[] auth_tag = Arrays.copyOf(hmacValue, 16);
                    String auth_tag64 = encodeB64(auth_tag);

                    // A.2.7. Complete Representation
                    String finalString = parts[0] + "." + parts[1] + "." + parts[2] + "." + parts[3] + "."
                            + auth_tag64;

                    //                  // just for verification
                    //                  byte jwt64 [] = decryptJWE(finalString, RsaKeyTim.privRsaKey);
                    //                  if(jwt64!=null) {
                    //                     String jws = new String(jwt64);
                    //                     Log.d("completeJweFromSIM", "jws verify Key TIM :"+verifyJWS(jws,RsaKeyTim.pubRsaKey));
                    //                  }

                    return finalString;
                }
            }
            // 
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

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From source file:com.brienwheeler.lib.security.HmacSha256.java

public static String base64HmacSha256(String secretKey, String signData) {
    try {/*www .jav a  2  s . c  om*/
        Mac hmacSha256 = Mac.getInstance("HmacSHA256");
        SecretKeySpec secretKeySpec = new SecretKeySpec(secretKey.getBytes(), "HmacSHA256");
        hmacSha256.init(secretKeySpec);
        return Base64.encodeBase64String(hmacSha256.doFinal(signData.getBytes()));
    } catch (Exception e) {
        throw new CryptoException(e);
    }
}

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From source file:edu.wright.cs.sp16.ceg3120.util.PasswordEncryptionUtility.java

/**
 * Encrypts a given string using AES.//  w  ww . ja  v  a  2s  . com
 * 
 * @param value
 *            // String to encrypt.
 * @return // Returns encrypted string.
 */
public static String encrypt(String value) {
    try {
        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("UTF-8"));
        System.out.println("encrypted string: " + Base64.encodeBase64String(encrypted));

        return Base64.encodeBase64String(encrypted);
    } catch (RuntimeException e) {
        throw e;
    } catch (Exception ex) {
        ex.printStackTrace();
    }

    return null;
}

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From source file:Logi.GSeries.Libraries.Encryption.java

public static String encrypt(String decryptedString, String password) {
    try {/*  www. j  av  a  2 s  .  c  o  m*/
        // build the initialization vector (randomly).
        SecureRandom random = new SecureRandom();
        byte initialVector[] = new byte[16];
        //generate random 16 byte IV AES is always 16bytes
        random.nextBytes(initialVector);
        IvParameterSpec ivspec = new IvParameterSpec(initialVector);
        SecretKeySpec skeySpec = new SecretKeySpec(password.getBytes("UTF-8"), "AES");
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, ivspec);
        byte[] encrypted = cipher.doFinal(decryptedString.getBytes());
        byte[] encryptedWithIV = new byte[encrypted.length + initialVector.length];
        System.arraycopy(encrypted, 0, encryptedWithIV, 0, encrypted.length);
        System.arraycopy(initialVector, 0, encryptedWithIV, encrypted.length, initialVector.length);
        return Base64.encodeBase64String(encryptedWithIV);
    } catch (Exception ex) {
        Logger.getLogger(Encryption.class.getName()).log(Level.SEVERE, null, ex);
        return "Error";
    }
}

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From source file:encrypt.algorithms.AESCBC.java

public String encrypt(String key1, String key2, String value) {
    try {/*from  w w w  .ja  v  a2s  .  c  o m*/
        IvParameterSpec iv = new IvParameterSpec(key2.getBytes("UTF-8"));

        SecretKeySpec skeySpec = new SecretKeySpec(key1.getBytes("UTF-8"), "AES");
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
        byte[] encrypted = cipher.doFinal(value.getBytes());
        // System.out.println("encrypted string:"
        //       + Base64.encodeBase64String(encrypted));
        return Base64.encodeBase64String(encrypted);
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return null;
}

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From source file:com.sshutils.utils.CryptHelper.java

public static String encrypt(String strToEncrypt) {
    try {//ww w .j  av a  2  s . co  m

        Cipher cipher = Cipher.getInstance(ENCRYPT_TYPE, "BC");
        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;

}

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From source file:Main.java

public static void encrypt(String fileIn, String fileOut, byte key[])
        throws IOException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException {
    // Here you read the cleartext.
    FileInputStream fis = new FileInputStream(fileIn);
    // This stream write the encrypted text. This stream will be wrapped by another stream.
    FileOutputStream fos = new FileOutputStream(fileOut);

    // Length is 32 bytes
    //byte key[] = "1010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100000011010110101010101010100101111001001001001001001011110111100001111000011".getBytes("UTF-8");
    MessageDigest sha = MessageDigest.getInstance("SHA-256");
    key = sha.digest(key);/*from   w  w  w.j  a  v  a2 s.  c o m*/
    SecretKeySpec sks = new SecretKeySpec(key, "AES");
    // Create cipher
    Cipher cipher = Cipher.getInstance("AES");
    cipher.init(Cipher.ENCRYPT_MODE, sks);
    // Wrap the output stream
    CipherOutputStream cos = new CipherOutputStream(fos, cipher);
    // Write bytes
    int b;
    byte[] d = new byte[8];
    while ((b = fis.read(d)) != -1) {
        cos.write(d, 0, b);
    }
    // Flush and close streams.
    cos.flush();
    cos.close();
    fis.close();
}

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From source file:fi.ilmoeuro.membertrack.util.Crypto.java

public static String hash(String candidate, String salt) {
    try {/*  ww w .j av  a 2s. c  o m*/
        SecretKeyFactory skf = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
        KeySpec ks = new PBEKeySpec(candidate.toCharArray(), salt.getBytes(StandardCharsets.US_ASCII), 1024,
                128);
        SecretKey sk = skf.generateSecret(ks);
        Key k = new SecretKeySpec(sk.getEncoded(), "AES");
        return Hex.encodeHexString(k.getEncoded());
    } catch (NoSuchAlgorithmException | InvalidKeySpecException ex) {
        throw new RuntimeException("Error while hashing", ex);
    }
}

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From source file:cr.ac.uia.SistemaGC.utils.AES.java

public static String encrypt(Long cedula, String usuario, String contrasena) {
    //<editor-fold defaultstate="collapsed" desc="Mtodo para cifrar contraseas">
    /*/*  w w w  . j a  v  a 2s. co m*/
    * Inspirado en:
    * http://stackoverflow.com/questions/15554296/simple-java-aes-encrypt-decrypt-example
     */
    try {
        IvParameterSpec iv = new IvParameterSpec(fitString(usuario, 16).getBytes("UTF-8"));
        SecretKeySpec skeySpec = new SecretKeySpec(fitString(cedula.toString(), 16).getBytes("UTF-8"), "AES");
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
        byte[] encrypted = cipher.doFinal(contrasena.getBytes());
        return Base64.encodeBase64String(encrypted);
    } catch (UnsupportedEncodingException | NoSuchAlgorithmException | NoSuchPaddingException
            | InvalidKeyException | InvalidAlgorithmParameterException | IllegalBlockSizeException
            | BadPaddingException e) {
        e.printStackTrace();
        System.err.println(e.getClass().getName() + ": " + e.getMessage());
        System.exit(0);
    }
    return null;
    //</editor-fold>
}

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