39 lines
810 B
Go
39 lines
810 B
Go
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package nuoer
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import (
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"crypto/md5"
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"encoding/hex"
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"sort"
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"strings"
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)
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// Sign 根据 body 业务参数与 secret 生成 MD5 签名。
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// 规则：排除空值参数，按 key 的 ASCII 升序排序，拼接「参数名+参数值」后追加 secret，再 MD5（小写十六进制）。
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func Sign(body map[string]string, secret string) string {
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if len(body) == 0 {
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return genMD5(secret)
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}
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keys := make([]string, 0, len(body))
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for k, v := range body {
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if strings.TrimSpace(v) == "" {
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continue
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}
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keys = append(keys, k)
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}
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sort.Strings(keys)
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var sb strings.Builder
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for _, k := range keys {
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sb.WriteString(k)
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sb.WriteString(body[k])
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}
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sb.WriteString(secret)
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return genMD5(sb.String())
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}
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func genMD5(s string) string {
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sum := md5.Sum([]byte(s))
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return hex.EncodeToString(sum[:])
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}
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