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generator.go
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/
generator.go
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package tokens
import (
"crypto/hmac"
"crypto/sha256"
"encoding/base64"
"fmt"
"strings"
"time"
"github.com/sirupsen/logrus"
)
// 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
}