/**
    * Licensed to jclouds, Inc. (jclouds) under one or more
    * contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  jclouds licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.jclouds.crypto;
  
  import java.security.InvalidKeyException;
  import java.security.KeyFactory;
  import java.security.KeyPairGenerator;
  import java.security.MessageDigest;
  import java.security.NoSuchAlgorithmException;
  import java.security.cert.CertificateFactory;
  
  import javax.crypto.Mac;
  
  import org.jclouds.encryption.internal.JCECrypto;
  
  import com.google.inject.ImplementedBy;
  
  /**
   * Allows you to access cryptographic objects and factories without adding a
   * provider to the JCE runtime.
   * 
   * @author Adrian Cole
   */
  @ImplementedBy(JCECrypto.class)
  public interface Crypto {
     KeyPairGenerator rsaKeyPairGenerator();
  
     KeyFactory rsaKeyFactory();
  
     CertificateFactory certFactory();
  
     Mac hmac(String algorithm, byte[] key) throws NoSuchAlgorithmException, InvalidKeyException;
  
     Mac hmacSHA256(byte[] key) throws InvalidKeyException;
  
     Mac hmacSHA1(byte[] key) throws InvalidKeyException;
  
     MessageDigest digest(String algorithm) throws NoSuchAlgorithmException;
  
     MessageDigest md5();
  
     MessageDigest sha1();
  
     MessageDigest sha256();
  
     MessageDigest sha512();
  
  }