HMACSHA1.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / Security / Cryptography / HMACSHA1.cs / 1305376 / HMACSHA1.cs

                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
// [....]
// 
 
//
// HMACSHA1.cs 
//

namespace System.Security.Cryptography {
    [System.Runtime.InteropServices.ComVisible(true)] 
    public class HMACSHA1 : HMAC {
        // 
        // public constructors 
        //
 
        public HMACSHA1 () : this (Utils.GenerateRandom(64)) {}

        public HMACSHA1 (byte[] key) : this (key, false) {}
 
        public HMACSHA1 (byte[] key, bool useManagedSha1) {
            m_hashName = "SHA1"; 
#if FEATURE_CRYPTO 
            if (useManagedSha1) {
#endif // FEATURE_CRYPTO 
                m_hash1 = new SHA1Managed();
                m_hash2 = new SHA1Managed();
#if FEATURE_CRYPTO
            } else { 
                m_hash1 = new SHA1CryptoServiceProvider();
                m_hash2 = new SHA1CryptoServiceProvider(); 
            } 
#endif // FEATURE_CRYPTO
 
            HashSizeValue = 160;
            base.InitializeKey(key);
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
                        

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