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 }