remove dependency to external base62 package and create own methods in utils

management/server/account.go

@@ -15,7 +15,6 @@ import (
 	"sync"
 	"time"
 
-	"codeberg.org/ac/base62"
 	"github.com/eko/gocache/v3/cache"
 	cacheStore "github.com/eko/gocache/v3/store"
 	gocache "github.com/patrickmn/go-cache"
@@ -28,6 +27,7 @@ import (
 	"github.com/netbirdio/netbird/management/server/jwtclaims"
 	"github.com/netbirdio/netbird/management/server/status"
 	"github.com/netbirdio/netbird/route"
+	"github.com/netbirdio/netbird/util"
 )
 
 const (
@@ -1174,7 +1174,7 @@ func (am *DefaultAccountManager) GetAccountFromPAT(token string) (*Account, *Use
 	secret := token[len(PATPrefix) : len(PATPrefix)+PATSecretLength]
 	encodedChecksum := token[len(PATPrefix)+PATSecretLength : len(PATPrefix)+PATSecretLength+PATChecksumLength]
 
-	verificationChecksum, err := base62.Decode(encodedChecksum)
+	verificationChecksum, err := util.DecodeBase62(encodedChecksum)
 	if err != nil {
 		return nil, nil, nil, fmt.Errorf("token checksum decoding failed: %w", err)
 	}

management/server/personal_access_token.go

@@ -7,9 +7,10 @@ import (
 	"hash/crc32"
 	"time"
 
-	"codeberg.org/ac/base62"
 	b "github.com/hashicorp/go-secure-stdlib/base62"
 	"github.com/rs/xid"
+
+	"github.com/netbirdio/netbird/util"
 )
 
 const (
@@ -71,7 +72,7 @@ func generateNewToken() (string, string, error) {
 	}
 
 	checksum := crc32.ChecksumIEEE([]byte(secret))
-	encodedChecksum := base62.Encode(checksum)
+	encodedChecksum := util.EncodeBase62(checksum)
 	paddedChecksum := fmt.Sprintf("%06s", encodedChecksum)
 	plainToken := PATPrefix + secret + paddedChecksum
 	hashedToken := sha256.Sum256([]byte(plainToken))

management/server/personal_access_token_test.go

@@ -4,11 +4,13 @@ import (
 	"crypto/sha256"
 	b64 "encoding/base64"
 	"hash/crc32"
+	"math/big"
 	"strings"
 	"testing"
 
-	"codeberg.org/ac/base62"
 	"github.com/stretchr/testify/assert"
+
+	"github.com/netbirdio/netbird/util"
 )
 
 func TestPAT_GenerateToken_Hashing(t *testing.T) {
@@ -33,8 +35,10 @@ func TestPAT_GenerateToken_Checksum(t *testing.T) {
 	secret := tokenWithoutPrefix[:len(tokenWithoutPrefix)-6]
 	tokenCheckSum := tokenWithoutPrefix[len(tokenWithoutPrefix)-6:]
 
+	var i big.Int
+	i.SetString(secret, 62)
 	expectedChecksum := crc32.ChecksumIEEE([]byte(secret))
-	actualChecksum, err := base62.Decode(tokenCheckSum)
+	actualChecksum, err := util.DecodeBase62(tokenCheckSum)
 	if err != nil {
 		t.Fatal(err)
 	}