Cryptography/CryptoHash.cs

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/*
 * Author: Kishore Reddy
 * Url: http://commonlibrarynet.codeplex.com/
 * Title: CommonLibrary.NET
 * Copyright: � 2009 Kishore Reddy
 * License: LGPL License
 * LicenseUrl: http://commonlibrarynet.codeplex.com/license
 * Description: A C# based .NET 3.5 Open-Source collection of reusable components.
 * Usage: 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.
 */
using System;
using System.Security.Cryptography;
using System.Text; 
using System.Configuration;

namespace ComLib.Cryptography
{

    /// <summary>
    /// Cryptography service to encrypt and decrypt strings.
    /// </summary>
    public class CryptoHash : ICrypto
	{
        /// <summary>
        /// Settings for encryption
        /// </summary>
        protected CryptoConfig _encryptionOptions;


        /// <summary>
        /// Hashing algorithm
        /// </summary>
        protected HashAlgorithm _algorithm;


        #region Constructors
        /// <summary>
        /// Default options
        /// </summary>
        public CryptoHash()
        {
            _encryptionOptions = new CryptoConfig();
            _algorithm = CryptographyUtils.CreateHashAlgoMd5();
        }


        /// <summary>
        /// Initializes a new instance of this class.
        /// </summary>
        /// <param name="key"></param>
        /// <param name="algorithm"></param>
        public CryptoHash(string key, HashAlgorithm algorithm)
        {
            _encryptionOptions = new CryptoConfig(true, key);
            _algorithm = algorithm;
        }