base-golang/pkg/signature/signature_generate.go

63 lines
1.4 KiB
Go
Raw Normal View History

2024-07-23 10:23:43 +08:00
package signature
import (
"bytes"
"crypto/hmac"
"crypto/sha256"
"encoding/base64"
"errors"
"fmt"
"net/url"
"strings"
"git.bvbej.com/bvbej/base-golang/pkg/time_parse"
)
// Generate
// path 请求的路径 (不附带 querystring)
func (s *signature) Generate(path string, method string, params url.Values) (authorization, date string, err error) {
if path == "" {
err = errors.New("path required")
return
}
if method == "" {
err = errors.New("method required")
return
}
methodName := strings.ToUpper(method)
if !methods[methodName] {
err = errors.New("method param error")
return
}
// Date
date = time_parse.CSTLayoutString()
// Encode() 方法中自带 sorted by key
sortParamsEncode, err := url.QueryUnescape(params.Encode())
if err != nil {
err = fmt.Errorf("url QueryUnescape error [%v]", err)
return
}
// 加密字符串规则
buffer := bytes.NewBuffer(nil)
buffer.WriteString(path)
buffer.WriteString(delimiter)
buffer.WriteString(methodName)
buffer.WriteString(delimiter)
buffer.WriteString(sortParamsEncode)
buffer.WriteString(delimiter)
buffer.WriteString(date)
// 对数据进行 sha256 加密,并进行 base64 encode
hash := hmac.New(sha256.New, []byte(s.secret))
hash.Write(buffer.Bytes())
digest := base64.StdEncoding.EncodeToString(hash.Sum(nil))
authorization = fmt.Sprintf("%s %s", s.key, digest)
return
}