41 lines
1.3 KiB
C#
41 lines
1.3 KiB
C#
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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 VOL.Core.Configuration;
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namespace VOL.Core.Utilities
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{
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/// <summary>
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/// IOT签名
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/// </summary>
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public static class IOTSignatureHelper
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{
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private static readonly string SecretKey = AppSetting.IOTConfig.SecretKey;
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private static readonly TimeSpan ValidDuration = TimeSpan.FromMinutes(AppSetting.IOTConfig.ExpirationDate); // 签名有效期
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public static string GenerateSignature(string data, long timestamp)
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{
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string message = $"{data}:{timestamp}";
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using (var hmac = new HMACSHA256(Encoding.UTF8.GetBytes(SecretKey)))
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{
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var hash = hmac.ComputeHash(Encoding.UTF8.GetBytes(message));
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return Convert.ToBase64String(hash);
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}
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}
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public static bool ValidateSignature(string data, long timestamp, string signature)
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{
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if (Math.Abs((DateTimeOffset.UtcNow.ToUnixTimeSeconds() - timestamp)) > ValidDuration.TotalSeconds)
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{
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return false; // 时间戳过期
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}
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var generatedSignature = GenerateSignature(data, timestamp);
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return generatedSignature == signature;
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}
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}
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}
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