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.arccotangent.pacchat.crypto.MsgCrypto.java

public static PacchatMessage decryptAndVerifyMessage(String cryptedMsg, PrivateKey privateKey,
        PublicKey publicKey) {//from w ww .  ja v a  2s.c  o  m
    mc_log.i("Decrypting and verifying message.");
    String[] messageComponents = cryptedMsg.split("\n");
    String cryptedKeyB64 = messageComponents[0];
    String cryptedTextB64 = messageComponents[1];
    String signatureB64 = messageComponents[2];

    boolean verified = RSA.verifyBytes(Base64.decodeBase64(cryptedKeyB64), Base64.decodeBase64(signatureB64),
            publicKey);
    if (verified)
        mc_log.i("Message authenticity verified!");
    else {
        mc_log.w("**********************************************");
        mc_log.w("Message authenticity NOT VERIFIED! Will continue decryption anyway.");
        mc_log.w(
                "Someone may be tampering with your connection! This is an unlikely, but not impossible scenario!");
        mc_log.w(
                "If you are sure the connection was not tampered with, consider asking the sender to send out a key update.");
        mc_log.w("**********************************************");
    }

    DecryptStatus rsa = RSA.decryptBytes(Base64.decodeBase64(cryptedKeyB64), privateKey);
    byte[] aesKey = rsa.getMessage();
    SecretKey aes = new SecretKeySpec(aesKey, "AES");

    DecryptStatus message = AES.decryptBytes(Base64.decodeBase64(cryptedTextB64), aes);
    byte[] msg = message.getMessage();
    boolean decrypted = message.isDecryptedSuccessfully();

    return new PacchatMessage(new String(msg), verified, decrypted);
}

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From source file:org.matrix.security.crypto.encrypt.AesBytesEncryptor.java

public AesBytesEncryptor(String password, CharSequence salt, BytesKeyGenerator ivGenerator) {
    PBEKeySpec keySpec = new PBEKeySpec(password.toCharArray(), Hex.decode(salt), 1024, 256);
    SecretKey secretKey = newSecretKey("PBKDF2WithHmacSHA1", keySpec);
    this.secretKey = new SecretKeySpec(secretKey.getEncoded(), "AES");
    encryptor = newCipher(AES_ALGORITHM);
    decryptor = newCipher(AES_ALGORITHM);
    this.ivGenerator = ivGenerator != null ? ivGenerator : NULL_IV_GENERATOR;
}

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From source file:de.scrubstudios.srvmon.agent.classes.Crypt.java

/**
 * This function is used to decrypt incoming data.
 * @param key Encryption key//from   w w  w  .  j  a  va 2  s . c  o  m
 * @param data Data string which should be decrypted.
 * @return The decrypted data string.
 */
public static String decrypt(String key, String data) {
    byte[] decryptedData = null;
    SecretKeySpec keySpec = new SecretKeySpec(key.getBytes(), "AES");

    try {
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");

        cipher.init(Cipher.DECRYPT_MODE, keySpec);
        decryptedData = cipher.doFinal(Base64.decodeBase64(data));

        return new String(decryptedData);
    } catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException | IllegalBlockSizeException
            | BadPaddingException ex) {
        Logger.getLogger(Crypt.class.getName()).log(Level.SEVERE, null, ex);
    }

    return null;
}

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From source file:com.microsoft.azure.batch.auth.BatchCredentialsInterceptor.java

private String sign(String accessKey, String stringToSign) {
    try {/*  w  w  w  . j  av a 2s  .c o  m*/
        // Encoding the Signature
        // Signature=Base64(HMAC-SHA256(UTF8(StringToSign)))
        Mac hmac = Mac.getInstance("hmacSHA256");
        hmac.init(new SecretKeySpec(Base64.decodeBase64(accessKey), "hmacSHA256"));
        byte[] digest = hmac.doFinal(stringToSign.getBytes("UTF-8"));
        return Base64.encodeBase64String(digest);
    } catch (Exception e) {
        throw new IllegalArgumentException("accessKey", e);
    }
}

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From source file:fi.vm.kapa.identification.service.PhaseIdService.java

public PhaseIdService(String sharedSecret, int timeInterval, String hmacAlgorithm) throws Exception {
    this.timeInterval = timeInterval;
    hmacCalc = Mac.getInstance(hmacAlgorithm);
    SecretKeySpec keySpec = new SecretKeySpec(sharedSecret.getBytes(), hmacAlgorithm);
    hmacCalc.init(keySpec);//from   www. j  av a2s . com
}

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From source file:edu.cmu.sei.ams.cloudlet.impl.AESEncrypter.java

public AESEncrypter(String password) {
    this.password = password;
    try {/*w w w.j  av a  2  s. c  om*/
        MessageDigest digest = MessageDigest.getInstance("SHA-256");
        digest.reset();
        this.skeySpec = new SecretKeySpec(digest.digest(this.password.getBytes("UTF-8")), "AES");
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
}

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From source file:net.fenyo.mail4hotspot.web.GMailOAuthStep1Servlet.java

private String hmac(final String key, final String message)
        throws InvalidKeyException, NoSuchAlgorithmException, UnsupportedEncodingException {
    final Mac mac = Mac.getInstance("HmacSHA1");
    mac.init(new SecretKeySpec(key.getBytes("UTF-8"), "HmacSHA1"));
    return org.apache.commons.codec.binary.Base64.encodeBase64String(mac.doFinal(message.getBytes("UTF-8")));
}

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From source file:com.cloud.consoleproxy.ConsoleProxyPasswordBasedEncryptor.java

public String encryptText(String text) {
    if (text == null || text.isEmpty())
        return text;

    assert (password != null);
    assert (!password.isEmpty());

    try {/* w ww. j  a  v  a2s  .com*/
        Cipher cipher = Cipher.getInstance("DES");
        int maxKeySize = 8;
        SecretKeySpec keySpec = new SecretKeySpec(normalizeKey(password.getBytes(), maxKeySize), "DES");
        cipher.init(Cipher.ENCRYPT_MODE, keySpec);
        byte[] encryptedBytes = cipher.doFinal(text.getBytes());
        return Base64.encodeBase64URLSafeString(encryptedBytes);
    } catch (NoSuchAlgorithmException e) {
        s_logger.error("Unexpected exception ", e);
        return null;
    } catch (NoSuchPaddingException e) {
        s_logger.error("Unexpected exception ", e);
        return null;
    } catch (IllegalBlockSizeException e) {
        s_logger.error("Unexpected exception ", e);
        return null;
    } catch (BadPaddingException e) {
        s_logger.error("Unexpected exception ", e);
        return null;
    } catch (InvalidKeyException e) {
        s_logger.error("Unexpected exception ", e);
        return null;
    }
}

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From source file:model.Encryption.java

public void generateSecretKey() {
    try {/*from w ww .j  a  v  a2  s .com*/
        String specificCryptKey = "zertfghzbenrfzer65z+er56365zr45ze4rz4er534z65rzrz53er4135a456r4az4er34z56er42df13z4er5646z5r4zer4";
        MessageDigest shahash = MessageDigest.getInstance("SHA-1");
        byte[] key = shahash.digest(specificCryptKey.getBytes("UTF-8"));
        key = Arrays.copyOf(key, 16);
        secret = new SecretKeySpec(key, "AES");
    } catch (NoSuchAlgorithmException ex) {
        Logger.getLogger(Encryption.class.getName()).log(Level.SEVERE, null, ex);
    } catch (UnsupportedEncodingException ex) {
        Logger.getLogger(Encryption.class.getName()).log(Level.SEVERE, null, ex);
    }
}

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

/**
 * Generate key./*from  w w  w  . jav a2 s  . c  o m*/
 *
 * @return the key
 * @throws Exception the exception
 */
private static Key generateKey() throws Exception {
    Key key = new SecretKeySpec(keyValue, ALGO);
    return key;
}

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