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46 lines
912 B
46 lines
912 B
package request
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import (
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"fmt"
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"sort"
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"strings"
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)
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type hashAlg interface {
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Hash(str string) string
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}
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type signature struct {
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secret string
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alg hashAlg
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}
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func NewSignature(secret string, alg hashAlg) *signature {
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return &signature{secret: secret, alg: alg}
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}
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// GenSignature 这里获取签名与前端传递的签名做对比，防止重复使用可以将其存入redis或者对比时间戳
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func (s *signature) GenSignature(params map[string]string) string {
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if params == nil {
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return ""
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}
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keys := make([]string, 0, len(params))
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// 获取所有key 按照ASSIC码升序
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for k, v := range params {
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// 空字符串不参与签名
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if 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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signStr := ""
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for _, k := range keys {
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signStr += fmt.Sprintf("%s=%s&", k, params[k])
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}
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signStr = signStr + "key=" + s.secret
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return strings.ToUpper(s.alg.Hash(signStr))
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}
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