63 lines
1.4 KiB
Go
63 lines
1.4 KiB
Go
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package signature
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import (
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"bytes"
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"crypto/hmac"
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"crypto/sha256"
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"encoding/base64"
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"errors"
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"fmt"
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"net/url"
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"strings"
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"git.bvbej.com/bvbej/base-golang/pkg/time_parse"
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)
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// Generate
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// path 请求的路径 (不附带 querystring)
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func (s *signature) Generate(path string, method string, params url.Values) (authorization, date string, err error) {
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if path == "" {
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err = errors.New("path required")
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return
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}
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if method == "" {
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err = errors.New("method required")
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return
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}
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methodName := strings.ToUpper(method)
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if !methods[methodName] {
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err = errors.New("method param error")
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return
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}
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// Date
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date = time_parse.CSTLayoutString()
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// Encode() 方法中自带 sorted by key
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sortParamsEncode, err := url.QueryUnescape(params.Encode())
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if err != nil {
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err = fmt.Errorf("url QueryUnescape error [%v]", err)
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return
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}
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// 加密字符串规则
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buffer := bytes.NewBuffer(nil)
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buffer.WriteString(path)
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buffer.WriteString(delimiter)
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buffer.WriteString(methodName)
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buffer.WriteString(delimiter)
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buffer.WriteString(sortParamsEncode)
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buffer.WriteString(delimiter)
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buffer.WriteString(date)
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// 对数据进行 sha256 加密，并进行 base64 encode
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hash := hmac.New(sha256.New, []byte(s.secret))
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hash.Write(buffer.Bytes())
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digest := base64.StdEncoding.EncodeToString(hash.Sum(nil))
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authorization = fmt.Sprintf("%s %s", s.key, digest)
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return
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}
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