Example usage for javax.crypto KeyGenerator init

Introduction

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

Prototype

public final void init(int keysize)

Source Link

Document

Initializes this key generator for a certain keysize.

Usage

From source file:com.github.woki.payments.adyen.action.CSEUtil.java

private static SecretKey aesKey(int keySize) throws NoSuchAlgorithmException {
    KeyGenerator kgen = KeyGenerator.getInstance("AES");
    kgen.init(keySize);
    return kgen.generateKey();
}

From source file:de.hybris.platform.b2b.punchout.services.impl.SymmetricManager.java

public static String getKey() {
    String key = null;/*from   w  ww  .j a  va 2 s  . co  m*/
    try {
        final KeyGenerator kgen = KeyGenerator.getInstance(ALGORITHM);
        kgen.init(KEY_SIZE);
        // Generate the secret key specs.
        final SecretKey skey = kgen.generateKey();
        final byte[] raw = skey.getEncoded();
        key = new Base64().encodeAsString(raw);
    } catch (final NoSuchAlgorithmException e) {
        // should never happen
        LOG.error("System was unable to generate the key.", e);
    }
    return key;
}

From source file:br.com.manish.ahy.kernel.util.HashUtil.java

private static Cipher getCipher(boolean enc)
        throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException {
    KeyGenerator kgen = KeyGenerator.getInstance("AES");
    kgen.init(128);
    SecretKeySpec skeySpec = new SecretKeySpec(getBytes(HEXES2), "AES");
    Cipher cipher = Cipher.getInstance("AES");
    if (enc) {/*  ww  w.j  a va 2s .com*/
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
    } else {
        cipher.init(Cipher.DECRYPT_MODE, skeySpec);
    }
    return cipher;
}

From source file:models.logic.CipherDecipher.java

public static SecretKey generateKey() throws NoSuchAlgorithmException {
    KeyGenerator keyGenS = KeyGenerator.getInstance("AES");
    keyGenS.init(128);
    SecretKey sKey = keyGenS.generateKey();

    return sKey;/*from  w w w.j a va  2s .c  o  m*/
}

From source file:org.apache.abdera.security.util.KeyHelper.java

public static Key generateKey(String type) throws NoSuchAlgorithmException {
    KeyGenerator keygen = KeyGenerator.getInstance(type);
    keygen.init(new SecureRandom());
    return keygen.generateKey();
}

From source file:org.apache.abdera.security.util.KeyHelper.java

public static SecretKey generateSecretKey(String type, int size)
        throws NoSuchAlgorithmException, NoSuchProviderException {
    KeyGenerator keyGenerator = KeyGenerator.getInstance(type);
    keyGenerator.init(size);
    return keyGenerator.generateKey();
}

From source file:org.craftercms.commons.crypto.CipherUtils.java

/**
 * Generates a random encryption key./*from   www .  ja  va  2s.  c  o m*/
 *
 * @param cipherAlgorithm the cipher algorithm the key will be used with. Will determine the key size
 * @return the generated key
 */
public static SecretKey generateKey(String cipherAlgorithm) throws NoSuchAlgorithmException {
    KeyGenerator keyGenerator = KeyGenerator.getInstance(cipherAlgorithm);
    keyGenerator.init(CryptoUtils.secureRandom);

    return keyGenerator.generateKey();
}

From source file:cl.niclabs.tscrypto.common.messages.EncryptedData.java

private static SecretKeySpec generateAESKey() {
    SecretKeySpec skeySpec = null;
    try {/*from ww w  .  j a va  2 s.c o  m*/
        KeyGenerator keyGen = KeyGenerator.getInstance("AES");
        keyGen.init(KEYSIZE_AES);

        // Generate the secret key specs.
        SecretKey secretKey = keyGen.generateKey();

        skeySpec = new SecretKeySpec(secretKey.getEncoded(), "AES");
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }

    return skeySpec;
}

From source file:org.demo.show.providers.ThreeDes2.java

/**
 * //w  ww .  j a  v a2  s  .c o  m
 * ?
 * 
 * @return byte[] 
 * */
public static byte[] initkey() throws Exception {

    // ?
    KeyGenerator kg = KeyGenerator.getInstance(KEY_ALGORITHM);
    // ??
    kg.init(168);
    // ?
    SecretKey secretKey = kg.generateKey();
    // ???
    return secretKey.getEncoded();
}

From source file:de.taimos.dvalin.interconnect.model.MessageCryptoUtil.java

private static void generateKey() {
    try {/*from   ww  w  . jav  a  2 s  . co m*/
        final KeyGenerator kgen = KeyGenerator.getInstance("AES");
        kgen.init(128);
        final SecretKey skey = kgen.generateKey();
        System.out.println("Key: " + Hex.encodeHexString(skey.getEncoded()));
    } catch (final NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
}