78 lines
2.6 KiB
C#
78 lines
2.6 KiB
C#
//
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// HMACSHA1.cs: Handles HMAC with SHA-1
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//
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// Author:
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// Sebastien Pouliot <sebastien@xamarin.com>
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//
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// (C) 2003 Motus Technologies Inc. (http://www.motus.com)
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// Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
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// Copyright 2013 Xamarin Inc. (http://www.xamarin.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System.IO;
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using System.Runtime.InteropServices;
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using Mono.Security.Cryptography;
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namespace System.Security.Cryptography {
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// References:
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// a. FIPS PUB 198: The Keyed-Hash Message Authentication Code (HMAC), 2002 March.
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// http://csrc.nist.gov/publications/fips/fips198/fips-198a.pdf
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// b. Internet RFC 2104, HMAC, Keyed-Hashing for Message Authentication
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// (include C source for HMAC-MD5)
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// http://www.ietf.org/rfc/rfc2104.txt
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// c. IETF RFC2202: Test Cases for HMAC-MD5 and HMAC-SHA-1
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// (include C source for HMAC-MD5 and HAMAC-SHA1)
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// http://www.ietf.org/rfc/rfc2202.txt
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// d. ANSI X9.71, Keyed Hash Message Authentication Code.
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// not free :-(
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// http://webstore.ansi.org/ansidocstore/product.asp?sku=ANSI+X9%2E71%2D2000
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[ComVisible (true)]
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public class HMACSHA1 : HMAC {
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public HMACSHA1 ()
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: this (KeyBuilder.Key (64))
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{
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}
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public HMACSHA1 (byte[] key)
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{
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#if FULL_AOT_RUNTIME
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SetHash ("SHA1", new SHA1Managed ());
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#else
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HashName = "SHA1";
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#endif
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HashSizeValue = 160;
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Key = key;
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}
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public HMACSHA1 (byte[] key, bool useManagedSha1)
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{
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HashName = "System.Security.Cryptography.SHA1" + (useManagedSha1 ? "Managed" : "CryptoServiceProvider");
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HashSizeValue = 160;
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Key = key;
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}
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}
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}
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