Finished login system with refresh-tokens

utils/util.go

@@ -2,7 +2,9 @@ package utils
 
 import (
 	"crypto/rand"
+	"crypto/sha256"
 	"encoding/base64"
+	"encoding/hex"
 
 	"github.com/google/uuid"
 )
@@ -18,3 +20,14 @@ func GenerateSecret() string {
 	}
 	return base64.StdEncoding.EncodeToString(b)
 }
+func GenerateRefreshToken() (string, error) {
+	b := make([]byte, 32)
+	if _, err := rand.Read(b); err != nil {
+		return "", err
+	}
+	return base64.RawURLEncoding.EncodeToString(b), nil
+}
+func HashToken(token string) string {
+	hash := sha256.Sum256([]byte(token))
+	return hex.EncodeToString(hash[:])
+}