73 lines
2.0 KiB
C#
73 lines
2.0 KiB
C#
using System;
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using System.Security.Cryptography;
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using System.Text;
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/// <summary>
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/// 签名算法：MD5(content + keys) 然后转base64
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/// </summary>
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public class SignatureHelper
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{
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/// <summary>
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/// 生成签名
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/// </summary>
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/// <param name="content">待签名的内容</param>
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/// <param name="charset">字符编码，通常为 "UTF-8"</param>
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/// <param name="keys">密钥</param>
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/// <returns>Base64编码的签名</returns>
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public static string DoSign(string content, string charset, string keys)
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{
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try
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{
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// 拼接内容和密钥
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string signContent = content + keys;
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// 根据字符集获取编码
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Encoding encoding = GetEncoding(charset);
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// 计算MD5哈希
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byte[] signBytes = encoding.GetBytes(signContent);
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byte[] md5Hash = MD5.HashData(signBytes);
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// 转换为Base64字符串
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string sign = Convert.ToBase64String(md5Hash);
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return sign;
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}
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catch (Exception ex)
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{
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throw new Exception($"签名失败: {ex.Message}", ex);
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}
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}
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/// <summary>
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/// 根据字符集名称获取编码对象
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/// </summary>
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private static Encoding GetEncoding(string charset)
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{
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if (string.IsNullOrEmpty(charset))
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{
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return Encoding.UTF8;
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}
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switch (charset.ToUpper())
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{
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case "UTF-8":
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case "UTF8":
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return Encoding.UTF8;
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case "GBK":
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return Encoding.GetEncoding("GBK");
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case "GB2312":
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return Encoding.GetEncoding("GB2312");
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default:
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try
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{
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return Encoding.GetEncoding(charset);
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}
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catch
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{
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return Encoding.UTF8;
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}
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}
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}
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}
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