feat:

* integrated totp

server/db/providers/cassandradb/totp.go

@@ -3,8 +3,13 @@ package cassandradb
 import (
 	"bytes"
 	"context"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/pem"
 	"fmt"
 	"image/png"
+	"os"
 	"time"
 
 	"github.com/pquerna/otp/totp"
@@ -66,3 +71,35 @@ func (p *provider) ValidatePasscode(ctx context.Context, passcode string, id str
 		}
 	}
 }
+
+func (p *provider) GenerateKeysTOTP() (*rsa.PublicKey, error) {
+	key := os.Getenv("TOTP_PRIVATE_KEY")
+	var privateKey *rsa.PrivateKey
+	if key == "" {
+		privateKey, err := rsa.GenerateKey(rand.Reader, 1024)
+		if err != nil {
+			return nil, err
+		}
+
+		privateKeyPEM := encodePrivateKeyToPEM(privateKey)
+		os.Setenv("TOTP_PRIVATE_KEY", string(privateKeyPEM))
+	}
+	publicKey := privateKey.PublicKey
+	return &publicKey, nil
+}
+
+func encodePrivateKeyToPEM(privateKey *rsa.PrivateKey) []byte {
+	// Marshal the private key to DER format.
+	privateKeyBytes := x509.MarshalPKCS1PrivateKey(privateKey)
+
+	// Create a PEM block for the private key.
+	privateKeyPEMBlock := &pem.Block{
+		Type:  "RSA PRIVATE KEY",
+		Bytes: privateKeyBytes,
+	}
+
+	// Encode the PEM block to PEM format.
+	privateKeyPEM := pem.EncodeToMemory(privateKeyPEMBlock)
+
+	return privateKeyPEM
+}