package tokens import ( "crypto/hmac" "crypto/sha256" "encoding/base64" "fmt" "github.com/Sirupsen/logrus" "strings" "time" ) // NewToken generates a token for accessing a specific method of the API func NewToken(userID string, key string, method string, action string, timestamp time.Time) string { fmtTime := timestamp.Format("20060102T150405Z") logrus.Debugf("Built timestamp: %s", fmtTime) message := strings.Join([]string{method, action, fmtTime}, "") logrus.Debugf("Built message: %s", message) signatureHmac := hmac.New(sha256.New, []byte(key)) signatureHmac.Write([]byte(message)) signature := base64.StdEncoding.EncodeToString([]byte(signatureHmac.Sum(nil))) logrus.Debugf("Built signature: %s", signature) userIDAndSignature := fmt.Sprintf("%s:%s", userID, signature) token := base64.StdEncoding.EncodeToString([]byte(userIDAndSignature)) logrus.Debugf("Built token: %s", token) return token }