Example usage for javax.crypto SecretKey getEncoded

Introduction

In this page you can find the example usage for javax.crypto SecretKey getEncoded.

Prototype

public byte[] getEncoded();

Source Link

Document

Returns the key in its primary encoding format, or null if this key does not support encoding.

Usage

From source file:com.the_incognito.darry.incognitochatmessengertest.BouncyCastleImplementation.java

public static boolean isValid(String plainText, String HMAC, String key) {
    try {// w w w .j a v  a  2  s .c  o m
        System.out.println("HMAC on = " + plainText);
        SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA256",
                new BouncyCastleProvider());
        char password[] = key.toCharArray();
        byte salt[] = "salt".getBytes();
        KeySpec spec = new PBEKeySpec(password, salt, 65536, 256);
        SecretKey tmp = factory.generateSecret(spec);
        SecretKey secret = new SecretKeySpec(tmp.getEncoded(), "HmacSHA256");
        // Get an hmac_sha1 Mac instance and initialize with the signing key
        Mac mac = Mac.getInstance("HmacSHA256", new BouncyCastleProvider());
        mac.init(secret);
        // Compute the hmac on input data bytes
        byte[] rawHmac = mac.doFinal(plainText.getBytes());
        // Convert raw bytes to Hex
        byte[] hexBytes = new Hex().encode(rawHmac);

        //  Covert array of Hex bytes to a String
        String check = new String(hexBytes, "UTF-8");
        System.out.println("Checking = " + check);
        return check.equals(HMAC);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

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From source file:com.the_incognito.darry.incognitochatmessengertest.BouncyCastleImplementation.java

public static String hmacSha256(String key, String value) {
    try {/*from   w w  w  .  jav  a  2s  .c  o m*/
        //System.out.println(Base64.getEncoder().encodeToString(keyBytes));
        // Get an hmac_sha256 key from the raw key bytes
        System.out.println("First HMAC on = " + value);
        SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA256",
                new BouncyCastleProvider());
        char password[] = key.toCharArray();
        byte salt[] = "salt".getBytes();
        KeySpec spec = new PBEKeySpec(password, salt, 65536, 256);
        SecretKey tmp = factory.generateSecret(spec);
        SecretKey secret = new SecretKeySpec(tmp.getEncoded(), "HmacSHA256");

        // Get an hmac_sha256 Mac instance and initialize with the signing key
        Mac mac = Mac.getInstance("HmacSHA256", new BouncyCastleProvider());
        mac.init(secret);

        // Compute the hmac on input data bytes
        byte[] rawHmac = mac.doFinal(value.getBytes());

        // Convert raw bytes to Hex
        byte[] hexBytes = new Hex().encode(rawHmac);
        //  Covert array of Hex bytes to a String
        return new String(hexBytes, "UTF-8");
    } catch (Exception e) {
        throw new RuntimeException(e);
    }

}

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From source file:com.fengduo.bee.commons.security.Digests.java

/**
 * ??/*from w w w .  jav a  2 s  .  c o  m*/
 * 
 * @param algorithm 
 * @return 
 * @throws RuntimeException  {@link java.security.NoSuchAlgorithmException} ?
 */
private static byte[] getHmacKey(String algorithm) {
    // ?KeyGenerator
    KeyGenerator keyGenerator = null;
    try {
        keyGenerator = KeyGenerator.getInstance(algorithm);
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException(e.getMessage());
    }
    // 
    SecretKey secretKey = keyGenerator.generateKey();
    // 
    return secretKey.getEncoded();
}

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From source file:org.javaweb.utils.EncryptUtils.java

/**
 * ?AES /*  w w w.  j  ava 2  s.c  om*/
 *
 * @param length
 * @return
 * @throws NoSuchAlgorithmException
 */
public static String getAESKey(int length) throws NoSuchAlgorithmException {
    KeyGenerator keyGenerator = KeyGenerator.getInstance("AES");
    keyGenerator.init(length);
    SecretKey secretKey = keyGenerator.generateKey();

    return HexUtils.bytes2HexString(secretKey.getEncoded());
}

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From source file:com.ro.ssc.app.client.licensing.TrialKeyValidator.java

public static String decodeKey(String encodedEncrypted) {
    String decoded = "";
    try {/*from   w  w  w  .j a v  a  2 s  . c o m*/
        byte[] saltDecrypt = SALT_DECRYPT.getBytes(StandardCharsets.UTF_8);
        SecretKeyFactory factoryKeyDecrypt = SecretKeyFactory.getInstance(SECRET_KEY_FACTORY);
        SecretKey tmp2 = factoryKeyDecrypt.generateSecret(
                new PBEKeySpec(PASS_DECRYPT.toCharArray(), saltDecrypt, ITERATIONS_DECRYPT, KEY_LENGTH));
        SecretKeySpec decryptKey = new SecretKeySpec(tmp2.getEncoded(), ALGORITHM);
        Cipher aesCipherDecrypt = Cipher.getInstance(CIPHER);
        aesCipherDecrypt.init(Cipher.DECRYPT_MODE, decryptKey);
        byte[] e64bytes = StringUtils.getBytesUtf8(encodedEncrypted);
        byte[] eBytes = Base64.decodeBase64(e64bytes);
        byte[] cipherDecode = aesCipherDecrypt.doFinal(eBytes);
        decoded = StringUtils.newStringUtf8(cipherDecode);
    } catch (Exception e) {
        LOGGER.error("Error while decoding the trial key", e);
    }
    return decoded;
}

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From source file:org.fejoa.library.messages.PublicCryptoEnvelope.java

static public InputStream encrypt(InputStream data, boolean isRawData, KeyId keyId, PublicKey key,
        FejoaContext context) throws JSONException, CryptoException, IOException {
    JSONObject object = new JSONObject();
    object.put(Envelope.PACK_TYPE_KEY, CRYPTO_TYPE);
    if (isRawData)
        object.put(Envelope.CONTAINS_DATA_KEY, 1);

    ICryptoInterface crypto = context.getCrypto();
    CryptoSettings.Asymmetric pubKeySettings = context.getCryptoSettings().publicKey;
    CryptoSettings.Symmetric symSettings = context.getCryptoSettings().symmetric;
    byte[] iv = crypto.generateInitializationVector(symSettings.ivSize);
    String base64IV = DatatypeConverter.printBase64Binary(iv);
    SecretKey symKey = crypto.generateSymmetricKey(symSettings);

    // encrypt the key
    byte[] encSymKey = crypto.encryptAsymmetric(symKey.getEncoded(), key, pubKeySettings);
    String base64EncSymKey = DatatypeConverter.printBase64Binary(encSymKey);

    object.put(PUBLIC_KEY_ID_KEY, keyId.getKeyId());
    object.put(PUBLIC_KEY_SETTINGS_KEY, JsonCryptoSettings.toJson(pubKeySettings));
    object.put(IV_KEY, base64IV);/*from  ww w.  j av a  2 s .  co  m*/
    object.put(ENC_SYMMETRIC_KEY_KEY, base64EncSymKey);
    object.put(SYMMETRIC_SETTINGS_KEY, JsonCryptoSettings.toJson(symSettings));
    String header = object.toString() + "\n";

    InputStream crytoStream = crypto.encryptSymmetric(data, symKey, iv, symSettings);
    return new SequenceInputStream(new ByteArrayInputStream(header.getBytes()), crytoStream);
}

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From source file:org.fejoa.library.messages.PublicCryptoEnvelope.java

static public byte[] encrypt(byte[] data, boolean isRawData, KeyId keyId, PublicKey key, FejoaContext context)
        throws JSONException, CryptoException, IOException {
    JSONObject object = new JSONObject();
    object.put(Envelope.PACK_TYPE_KEY, CRYPTO_TYPE);
    if (isRawData)
        object.put(Envelope.CONTAINS_DATA_KEY, 1);

    ICryptoInterface crypto = context.getCrypto();
    CryptoSettings.Asymmetric pubKeySettings = context.getCryptoSettings().publicKey;
    CryptoSettings.Symmetric symSettings = context.getCryptoSettings().symmetric;
    byte[] iv = crypto.generateInitializationVector(symSettings.ivSize);
    String base64IV = DatatypeConverter.printBase64Binary(iv);
    SecretKey symKey = crypto.generateSymmetricKey(symSettings);

    // encrypt the key
    byte[] encSymKey = crypto.encryptAsymmetric(symKey.getEncoded(), key, pubKeySettings);
    String base64EncSymKey = DatatypeConverter.printBase64Binary(encSymKey);

    object.put(PUBLIC_KEY_ID_KEY, keyId.getKeyId());
    object.put(PUBLIC_KEY_SETTINGS_KEY, JsonCryptoSettings.toJson(pubKeySettings));
    object.put(IV_KEY, base64IV);//w ww  . ja va2 s . c o m
    object.put(ENC_SYMMETRIC_KEY_KEY, base64EncSymKey);
    object.put(SYMMETRIC_SETTINGS_KEY, JsonCryptoSettings.toJson(symSettings));
    String header = object.toString() + "\n";

    ByteArrayOutputStream outStream = new ByteArrayOutputStream();
    outStream.write(header.getBytes());
    OutputStream crytoStream = crypto.encryptSymmetric(outStream, symKey, iv, symSettings);
    crytoStream.write(data);
    crytoStream.flush();
    return outStream.toByteArray();
}

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From source file:org.silverpeas.core.security.encryption.ContentEncryptionServiceTest.java

/**
 * Generates a key for an AES enciphering.
 * @return the key in hexadecimal./*w  ww  .  j  a v  a  2  s. c o m*/
 * @throws Exception if the key cannot be generated.
 */
public static String generateAESKey() throws Exception {
    KeyGenerator keyGenerator = KeyGenerator.getInstance("AES");
    keyGenerator.init(256);
    SecretKey skey = keyGenerator.generateKey();
    return EncodingUtil.asHex(skey.getEncoded());
}

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From source file:org.openTwoFactor.clientExt.edu.internet2.middleware.morphString.Crypto.java

/**
 * Generate a key.//  w w  w. j a va  2s . c  om
 * @param cipherName the name of the cipher, if null will default to "AES"
 * @param keybits the number of bits in the key, if null will default to 128
 * @return the bytes comprising the key
 */
public static byte[] generateKeyBytes(String cipherName, Integer keybits) {
    KeyGenerator keyGenerator = null;
    cipherName = cipherName == null ? "AES" : cipherName;
    try {
        keyGenerator = KeyGenerator.getInstance(cipherName);
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException("Failed to create KeyGenerator for cipherName=" + cipherName, e);
    }
    keyGenerator.init(keybits == null ? 128 : keybits); // 192 and 256 bits may not be available

    // Generate the secret key specs.
    SecretKey secretKey = keyGenerator.generateKey();
    byte[] keyBytes = secretKey.getEncoded();

    return keyBytes;
}

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From source file:org.grycap.gpf4med.security.FileEncryptionProvider.java

/**
 * Creates a new {@link FileEncryptionProvider} instance that provides encryption/decryption
 * capabilities based on the specified password.
 * @param password encryption/decryption password.
 * @return a new {@link FileEncryptionProvider} instance.
 * @throws Exception if an error occurs in the execution of the operation.
 *//*from   w w  w .ja va  2s.  c o m*/
public static FileEncryptionProvider getInstance(final String password) throws Exception {
    checkArgument(StringUtils.isNotBlank(password), "Uninitialized or invalid password");
    // generate key from password
    final byte[] salt = generateSalt();
    LOGGER.trace("Generated salt: " + Hex.encodeHexString(salt));
    final SecretKey secret = generateKey(password, salt);
    LOGGER.trace("Generated key: " + Hex.encodeHexString(secret.getEncoded()));
    // create encryption cipher - bouncycastle equivalent: Cipher.getInstance("AES/CBC/PKCS5Padding", "BC")
    final Cipher encryptCipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    encryptCipher.init(Cipher.ENCRYPT_MODE, secret);
    // initialization vector needed by the CBC mode
    final AlgorithmParameters params = encryptCipher.getParameters();
    final byte[] initVector = params.getParameterSpec(IvParameterSpec.class).getIV();
    // create decryption cipher - bouncycastle equivalent: Cipher.getInstance("AES/CBC/PKCS5Padding", "BC")
    final Cipher decryptCipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    decryptCipher.init(Cipher.DECRYPT_MODE, secret, new IvParameterSpec(initVector));
    LOGGER.trace(String.format("Encryption/decryption ciphers were created - %s",
            encryptCipher.getProvider().getInfo()));
    return new FileEncryptionProvider(encryptCipher, decryptCipher);
}

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