diff --git a/src/backend/accounts/crypto.ts b/src/backend/accounts/crypto.ts
index 9fe51380..f3fba9b6 100644
--- a/src/backend/accounts/crypto.ts
+++ b/src/backend/accounts/crypto.ts
@@ -10,6 +10,14 @@ type Keys = {
   seed: Uint8Array;
 };
 
+function uint8ArrayToBuffer(array: Uint8Array): forge.util.ByteStringBuffer {
+  return forge.util.createBuffer(
+    Array.from(array)
+      .map((byte) => String.fromCharCode(byte))
+      .join(""),
+  );
+}
+
 async function seedFromMnemonic(mnemonic: string) {
   return pbkdf2Async(sha256, mnemonic, "mnemonic", {
     c: 2048,
@@ -29,8 +37,8 @@ export async function keysFromMnemonic(mnemonic: string): Promise<Keys> {
   });
 
   return {
-    privateKey,
-    publicKey,
+    privateKey: new Uint8Array(privateKey),
+    publicKey: new Uint8Array(publicKey),
     seed,
   };
 }
@@ -43,11 +51,12 @@ export async function signCode(
   code: string,
   privateKey: Uint8Array,
 ): Promise<Uint8Array> {
-  return forge.pki.ed25519.sign({
+  const signature = forge.pki.ed25519.sign({
     encoding: "utf8",
     message: code,
-    privateKey,
+    privateKey: uint8ArrayToBuffer(privateKey),
   });
+  return new Uint8Array(signature);
 }
 
 export function bytesToBase64(bytes: Uint8Array) {
@@ -71,7 +80,9 @@ export function base64ToBuffer(data: string) {
 }
 
 export function base64ToStringBuffer(data: string) {
-  return forge.util.createBuffer(base64ToBuffer(data));
+  const decoded = base64ToBuffer(data);
+
+  return uint8ArrayToBuffer(decoded);
 }
 
 export function stringBufferToBase64(buffer: forge.util.ByteStringBuffer) {
@@ -91,7 +102,7 @@ export async function encryptData(data: string, secret: Uint8Array) {
 
   const cipher = forge.cipher.createCipher(
     "AES-GCM",
-    forge.util.createBuffer(secret),
+    uint8ArrayToBuffer(secret),
   );
   cipher.start({
     iv,
@@ -115,7 +126,7 @@ export function decryptData(data: string, secret: Uint8Array) {
 
   const decipher = forge.cipher.createDecipher(
     "AES-GCM",
-    forge.util.createBuffer(secret),
+    uint8ArrayToBuffer(secret),
   );
   decipher.start({
     iv: base64ToStringBuffer(iv),