diff --git a/libs/auth/src/angular/login-via-auth-request/login-via-auth-request.component.ts b/libs/auth/src/angular/login-via-auth-request/login-via-auth-request.component.ts
index 040d4d3c121..fc91f220138 100644
--- a/libs/auth/src/angular/login-via-auth-request/login-via-auth-request.component.ts
+++ b/libs/auth/src/angular/login-via-auth-request/login-via-auth-request.component.ts
@@ -676,7 +676,7 @@ export class LoginViaAuthRequestComponent implements OnInit, OnDestroy {
 
   private async decryptViaApprovedAuthRequest(
     authRequestResponse: AuthRequestResponse,
-    privateKey: ArrayBuffer,
+    privateKey: Uint8Array,
     userId: UserId,
   ): Promise<void> {
     /**
diff --git a/libs/auth/src/common/abstractions/auth-request.service.abstraction.ts b/libs/auth/src/common/abstractions/auth-request.service.abstraction.ts
index 1bfbfd8d004..1077bc024e9 100644
--- a/libs/auth/src/common/abstractions/auth-request.service.abstraction.ts
+++ b/libs/auth/src/common/abstractions/auth-request.service.abstraction.ts
@@ -72,7 +72,7 @@ export abstract class AuthRequestServiceAbstraction {
    */
   abstract setUserKeyAfterDecryptingSharedUserKey(
     authReqResponse: AuthRequestResponse,
-    authReqPrivateKey: ArrayBuffer,
+    authReqPrivateKey: Uint8Array,
     userId: UserId,
   ): Promise<void>;
   /**
@@ -83,7 +83,7 @@ export abstract class AuthRequestServiceAbstraction {
    */
   abstract setKeysAfterDecryptingSharedMasterKeyAndHash(
     authReqResponse: AuthRequestResponse,
-    authReqPrivateKey: ArrayBuffer,
+    authReqPrivateKey: Uint8Array,
     userId: UserId,
   ): Promise<void>;
   /**
@@ -94,7 +94,7 @@ export abstract class AuthRequestServiceAbstraction {
    */
   abstract decryptPubKeyEncryptedUserKey(
     pubKeyEncryptedUserKey: string,
-    privateKey: ArrayBuffer,
+    privateKey: Uint8Array,
   ): Promise<UserKey>;
   /**
    * Decrypts a `MasterKey` and `MasterKeyHash` from a public key encrypted `MasterKey` and `MasterKeyHash`.
@@ -106,7 +106,7 @@ export abstract class AuthRequestServiceAbstraction {
   abstract decryptPubKeyEncryptedMasterKeyAndHash(
     pubKeyEncryptedMasterKey: string,
     pubKeyEncryptedMasterKeyHash: string,
-    privateKey: ArrayBuffer,
+    privateKey: Uint8Array,
   ): Promise<{ masterKey: MasterKey; masterKeyHash: string }>;
 
   /**