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:Main.java

public static byte[] initKey(int size) throws NoSuchAlgorithmException {
    KeyGenerator kg = KeyGenerator.getInstance(KEY_ALGORITHM);
    kg.init(size);//from   w w w  .j a  v a2  s  .  co m
    SecretKey secretKey = kg.generateKey();
    return secretKey.getEncoded();
}

From source file:Main.java

private static byte[] iv() {
    byte[] iv = null;
    try {/*from  ww  w. j  a  v  a 2 s .co m*/
        KeyGenerator kgen = KeyGenerator.getInstance("AES");
        kgen.init(128);
        SecretKey skey = kgen.generateKey();
        iv = skey.getEncoded();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return iv;
}

From source file:Main.java

public static byte[] initKey() throws NoSuchAlgorithmException {
    KeyGenerator keyGen = KeyGenerator.getInstance("AES");
    keyGen.init(256); //192 256
    SecretKey secretKey = keyGen.generateKey();
    return secretKey.getEncoded();
}

From source file:MainClass.java

public static SecretKey createKeyForAES(int bitLength, SecureRandom random)
        throws NoSuchAlgorithmException, NoSuchProviderException {
    KeyGenerator generator = KeyGenerator.getInstance("AES", "BC");

    generator.init(128, random);/*w w  w .j  a v a2 s  . c  om*/

    return generator.generateKey();
}

From source file:Main.java

public static SecretKey generateAesKey() {
    try {/*  w  ww  . j ava  2 s .  c  o  m*/
        KeyGenerator kg = KeyGenerator.getInstance("AES");
        kg.init(KEY_LENGTH_AES);
        SecretKey key = kg.generateKey();

        return key;
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException(e);
    }
}

From source file:MainClass.java

static SecretKey createKeyForAES(int bitLength, SecureRandom random)
        throws NoSuchAlgorithmException, NoSuchProviderException {
    KeyGenerator generator = KeyGenerator.getInstance("AES", "BC");
    generator.init(256, random);/*from   w w  w  . j a  v  a 2  s  .c om*/
    return generator.generateKey();
}

From source file:com.java.demo.DesDemo.java

public static void Init() {
    try {// ww w .  ja va2 s . c o m
        KeyGenerator keyGenerator = KeyGenerator.getInstance("DES");
        keyGenerator.init(56);
        SecretKey secretKey = keyGenerator.generateKey();
        byte[] bytesKey = secretKey.getEncoded();

        DESKeySpec dESKeySpec = new DESKeySpec(bytesKey);
        SecretKeyFactory factory = SecretKeyFactory.getInstance("DES");
        convertSecretKey = factory.generateSecret(dESKeySpec);

    } catch (Exception e) {
    }
}

From source file:net.foreworld.util.RestUtil.java

public static String genApiKey() {
    try {//from w ww  .  ja v  a  2s. c  o  m
        KeyGenerator generator = KeyGenerator.getInstance("HmacSHA1");
        SecretKey key = generator.generateKey();
        String encodedKey = Base64.encodeBase64URLSafeString(key.getEncoded());
        return encodedKey;
    } catch (NoSuchAlgorithmException ignore) {
    }
    return null;
}

From source file:Main.java

private static byte[] generateEncryptionSecret() {
    try {/*from   w w w . j  a v  a 2s.c  om*/
        KeyGenerator generator = KeyGenerator.getInstance("AES");
        generator.init(128);

        SecretKey key = generator.generateKey();
        return key.getEncoded();
    } catch (NoSuchAlgorithmException ex) {
        Log.w("keyutil", ex);
        return null;
    }
}

From source file:Main.java

@SuppressLint("TrulyRandom")
public static SecretKey generateHmacKey(String algorithm) {
    try {/*w  w  w .j a v  a 2 s. c  o  m*/
        KeyGenerator keyGenerator = KeyGenerator.getInstance(algorithm);
        SecretKey key = keyGenerator.generateKey();
        return key;
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return null;
}