102 lines
3.5 KiB
C#
102 lines
3.5 KiB
C#
/*
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* Copyright (c) 2018 THL A29 Limited, a Tencent company. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Security.Cryptography;
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using System.Text;
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using System.Threading.Tasks;
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using TencentCloud.Common.Profile;
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namespace TencentCloud.Common
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{
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/// <summary>
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/// Signature helper class.
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/// </summary>
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public class SignHelper
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{
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///<summary>Generate signature.</summary>
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///<param name="signKey">Credential SecretKey.</param>
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///<param name="secret">Plain text to be signed.</param>
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///<returns>Signature.</returns>
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public static string Sign(string signKey, string secret, string SignatureMethod)
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{
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string signRet = string.Empty;
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if (SignatureMethod == ClientProfile.SIGN_SHA256)
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{
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using (HMACSHA256 mac = new HMACSHA256(Encoding.UTF8.GetBytes(signKey)))
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{
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byte[] hash = mac.ComputeHash(Encoding.UTF8.GetBytes(secret));
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signRet = Convert.ToBase64String(hash);
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}
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}
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else if(SignatureMethod == ClientProfile.SIGN_SHA1)
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{
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using (HMACSHA1 mac = new HMACSHA1(Encoding.UTF8.GetBytes(signKey)))
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{
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byte[] hash = mac.ComputeHash(Encoding.UTF8.GetBytes(secret));
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signRet = Convert.ToBase64String(hash);
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}
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}
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return signRet;
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}
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public static string SHA256Hex(string s)
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{
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using (SHA256 algo = SHA256.Create())
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{
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byte[] hashbytes = algo.ComputeHash(Encoding.UTF8.GetBytes(s));
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StringBuilder builder = new StringBuilder();
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for ( int i = 0; i < hashbytes.Length; ++i )
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{
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builder.Append(hashbytes[i].ToString("x2"));
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}
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return builder.ToString();
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}
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}
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public static byte [] HmacSHA256(byte [] key, byte [] msg)
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{
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using (HMACSHA256 mac = new HMACSHA256(key))
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{
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return mac.ComputeHash(msg);
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}
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}
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private static string BuildParamStr(SortedDictionary<string, string> requestParams, string requestMethod = "GET")
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{
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string retStr = "";
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foreach (string key in requestParams.Keys)
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{
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retStr += string.Format("{0}={1}&", key, requestParams[key]);
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}
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return retStr.TrimEnd('&');
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}
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public static string MakeSignPlainText(SortedDictionary<string, string> requestParams, string requestMethod , string requestHost, string requestPath)
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{
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string retStr = "";
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retStr += requestMethod;
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retStr += requestHost;
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retStr += requestPath;
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retStr += "?";
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retStr += BuildParamStr(requestParams);
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return retStr;
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}
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}
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}
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