Example usage for javax.crypto KeyGenerator generateKey

Introduction

In this page you can find the example usage for javax.crypto KeyGenerator generateKey.

Prototype

public final SecretKey generateKey()

Source Link

Document

Generates a secret key.

Usage

From source file:org.apache.myfaces.shared.util.StateUtils.java

private static byte[] findSecret(String secret, String algorithm) {
    byte[] bytes = null;

    if (secret == null) {
        try {/*from   www .ja v  a 2  s  .  c  om*/
            KeyGenerator kg = KeyGenerator.getInstance(algorithm);
            bytes = kg.generateKey().getEncoded();

            if (log.isLoggable(Level.FINE)) {
                log.fine("generated random password of length " + bytes.length);
            }
        } catch (NoSuchAlgorithmException e) {
            // Generate random password length 8, 
            int length = 8;
            bytes = new byte[length];
            new Random().nextBytes(bytes);

            if (log.isLoggable(Level.FINE)) {
                log.fine("generated random password of length " + length);
            }
        }
    } else {
        bytes = new Base64().decode(secret.getBytes());
    }

    return bytes;
}

From source file:org.apache.myfaces.shared.util.StateUtils.java

private static byte[] findMacSecret(String secret, String algorithm) {
    byte[] bytes = null;

    if (secret == null) {
        try {//from  ww w . j  a v  a2  s  .c  o m
            KeyGenerator kg = KeyGenerator.getInstance(algorithm);
            bytes = kg.generateKey().getEncoded();

            if (log.isLoggable(Level.FINE)) {
                log.fine("generated random mac password of length " + bytes.length);
            }
        } catch (NoSuchAlgorithmException e) {
            // Generate random password length 8, 
            int length = 8;
            bytes = new byte[length];
            new Random().nextBytes(bytes);

            if (log.isLoggable(Level.FINE)) {
                log.fine("generated random mac password of length " + length);
            }
        }
    } else {
        bytes = new Base64().decode(secret.getBytes());
    }

    return bytes;
}

From source file:net.sf.xfd.provider.PublicProvider.java

private static @Nullable Key getSalt(Context c) {
    if (cookieSalt == null) {
        synchronized (PublicProvider.class) {
            if (cookieSalt == null) {
                try {
                    try (ObjectInputStream oos = new ObjectInputStream(c.openFileInput(COOKIE_FILE))) {
                        cookieSalt = (Key) oos.readObject();
                    } catch (ClassNotFoundException | IOException e) {
                        LogUtil.logCautiously("Unable to read key file, probably corrupted or missing", e);

                        final File corrupted = c.getFileStreamPath(COOKIE_FILE);

                        //noinspection ResultOfMethodCallIgnored
                        corrupted.delete();
                    }/*  w w  w. j  a va2s. c  o m*/

                    if (cookieSalt != null) {
                        return cookieSalt;
                    }

                    final KeyGenerator keygen = KeyGenerator.getInstance("HmacSHA1");
                    keygen.init(COOKIE_SIZE * Byte.SIZE);

                    cookieSalt = keygen.generateKey();

                    try (ObjectOutputStream oos = new ObjectOutputStream(
                            c.openFileOutput(COOKIE_FILE, Context.MODE_PRIVATE))) {
                        oos.writeObject(cookieSalt);
                    } catch (IOException e) {
                        LogUtil.logCautiously("Failed to save key file", e);

                        return null;
                    }
                } catch (NoSuchAlgorithmException e) {
                    throw new AssertionError("failed to initialize hash functions", e);
                }
            }
        }
    }

    return cookieSalt;
}

From source file:jef.tools.security.EncrypterUtil.java

/**
 * ?KEY/*from   w w w  . j av  a  2  s.c  o m*/
 * 
 * @param value
 * @param algom
 *            
 * @return
 */
public static final SecretKey generateKey(String algom, int keylength) {
    try {
        KeyGenerator keygen = KeyGenerator.getInstance(algom);
        keygen.init(keylength);
        SecretKey deskey = keygen.generateKey();
        return deskey;
    } catch (GeneralSecurityException e) {
        throw new RuntimeException(e);
    }
}

From source file:org.openintents.safe.CryptoHelper.java

/**
 * @return null if failure, otherwise hex string version of key
 * @author Isaac Potoczny-Jones/*  www  .jav a 2s.  c  o m*/
 */
public static String generateMasterKey() throws NoSuchAlgorithmException {
    try {
        KeyGenerator keygen;
        keygen = KeyGenerator.getInstance("AES");
        keygen.init(256);
        SecretKey genDesKey = keygen.generateKey();
        return toHexString(genDesKey.getEncoded());
    } catch (NoSuchAlgorithmException e) {
        Log.e(TAG, "generateMasterKey(): " + e.toString());
        throw e;
    }
}

From source file:es.jamisoft.comun.utils.cipher.CifradoDES.java

private SecretKey generaDesKey() {
    try {//from   w  w  w .  j  ava 2 s . c  o m
        KeyGenerator keygen = KeyGenerator.getInstance("DES");

        return keygen.generateKey();
    } catch (Exception e) {
        System.out.println("Error descifrando un texto:" + e);
        e.printStackTrace();

        return null;
    }
}

From source file:es.jamisoft.comun.utils.cipher.Cifrado3DES.java

private SecretKey generaDesKey() {
    try {//w  ww  . ja  v a  2 s . c  o m
        KeyGenerator keygen = KeyGenerator.getInstance("DESede");

        return keygen.generateKey();
    } catch (Exception e) {
        System.out.println("Error descifrando un texto:" + e);
        e.printStackTrace();

        return null;
    }
}

From source file:com.javiermoreno.springboot.rest.CryptographyServiceImplBlowfish.java

public CryptographyServiceImplBlowfish()
        throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException {
    KeyGenerator keyGenerator = KeyGenerator.getInstance("Blowfish");
    keyGenerator.init(128);/*from   w w w  .j a  v  a 2 s . c  o m*/
    key = keyGenerator.generateKey();
    cipherEncrypt = Cipher.getInstance("Blowfish/ECB/PKCS5Padding");
    cipherEncrypt.init(Cipher.ENCRYPT_MODE, key);
    cipherDecrypt = Cipher.getInstance("Blowfish/ECB/PKCS5Padding");
    cipherDecrypt.init(Cipher.DECRYPT_MODE, key);
}

From source file:com.jwm123.loggly.reporter.TripleDesCipher.java

private void getKey() throws NoSuchAlgorithmException, IOException {
    File keyFile = appDir.getFileDir(keyPath);
    if (keyFile.exists()) {
        key = Base64.decode(FileUtils.readFileToString(keyFile));
    } else {/* w  ww  .j a  v  a 2s . co  m*/
        KeyGenerator generator = KeyGenerator.getInstance("DESede");
        SecretKey desKey = generator.generateKey();
        key = desKey.getEncoded();
        FileUtils.writeStringToFile(keyFile, new String(Base64.encode(key)));
    }

}

From source file:com.thoughtworks.go.security.AESCipherProvider.java

private byte[] generateKey() throws NoSuchAlgorithmException {
    KeyGenerator keygen = KeyGenerator.getInstance("AES");
    keygen.init(128);// w  w w  .  j av a 2  s  . c o m
    byte[] key = keygen.generateKey().getEncoded();
    return key;
}