diff --git a/td/telegram/ConfigManager.cpp b/td/telegram/ConfigManager.cpp
index 1965da0aa..7fad9ec45 100644
--- a/td/telegram/ConfigManager.cpp
+++ b/td/telegram/ConfigManager.cpp
@@ -447,7 +447,7 @@ static ActorOwn<> get_full_config(DcOption option, Promise<tl_object_ptr<telegra
     DcId dc_id() const final {
       return dc_id_;
     }
-    const std::shared_ptr<PublicRsaKeyShared> &public_rsa_key() final {
+    const std::shared_ptr<mtproto::PublicRsaKeyInterface> &public_rsa_key() final {
       return public_rsa_key_;
     }
     mtproto::AuthKey get_auth_key() final {
@@ -492,7 +492,7 @@ static ActorOwn<> get_full_config(DcOption option, Promise<tl_object_ptr<telegra
 
    private:
     DcId dc_id_;
-    std::shared_ptr<PublicRsaKeyShared> public_rsa_key_ =
+    std::shared_ptr<mtproto::PublicRsaKeyInterface> public_rsa_key_ =
         std::make_shared<PublicRsaKeyShared>(DcId::empty(), G()->is_test_dc());
 
     std::vector<unique_ptr<Listener>> auth_key_listeners_;
diff --git a/td/telegram/net/AuthDataShared.cpp b/td/telegram/net/AuthDataShared.cpp
index e7a42e884..98e99bae6 100644
--- a/td/telegram/net/AuthDataShared.cpp
+++ b/td/telegram/net/AuthDataShared.cpp
@@ -21,7 +21,8 @@ namespace td {
 
 class AuthDataSharedImpl final : public AuthDataShared {
  public:
-  AuthDataSharedImpl(DcId dc_id, std::shared_ptr<PublicRsaKeyShared> public_rsa_key, std::shared_ptr<Guard> guard)
+  AuthDataSharedImpl(DcId dc_id, std::shared_ptr<mtproto::PublicRsaKeyInterface> public_rsa_key,
+                     std::shared_ptr<Guard> guard)
       : dc_id_(dc_id), public_rsa_key_(std::move(public_rsa_key)), guard_(std::move(guard)) {
     log_auth_key(get_auth_key());
   }
@@ -30,7 +31,7 @@ class AuthDataSharedImpl final : public AuthDataShared {
     return dc_id_;
   }
 
-  const std::shared_ptr<PublicRsaKeyShared> &public_rsa_key() final {
+  const std::shared_ptr<mtproto::PublicRsaKeyInterface> &public_rsa_key() final {
     return public_rsa_key_;
   }
 
@@ -88,7 +89,7 @@ class AuthDataSharedImpl final : public AuthDataShared {
  private:
   DcId dc_id_;
   std::vector<unique_ptr<Listener>> auth_key_listeners_;
-  std::shared_ptr<PublicRsaKeyShared> public_rsa_key_;
+  std::shared_ptr<mtproto::PublicRsaKeyInterface> public_rsa_key_;
   std::shared_ptr<Guard> guard_;
   RwMutex rw_mutex_;
 
@@ -123,7 +124,8 @@ mtproto::AuthKey AuthDataShared::get_auth_key_for_dc(DcId dc_id) {
   return AuthDataSharedImpl::get_auth_key_for_dc(dc_id);
 }
 
-std::shared_ptr<AuthDataShared> AuthDataShared::create(DcId dc_id, std::shared_ptr<PublicRsaKeyShared> public_rsa_key,
+std::shared_ptr<AuthDataShared> AuthDataShared::create(DcId dc_id,
+                                                       std::shared_ptr<mtproto::PublicRsaKeyInterface> public_rsa_key,
                                                        std::shared_ptr<Guard> guard) {
   return std::make_shared<AuthDataSharedImpl>(dc_id, std::move(public_rsa_key), std::move(guard));
 }
diff --git a/td/telegram/net/AuthDataShared.h b/td/telegram/net/AuthDataShared.h
index 0343cc3c7..8ee9b408e 100644
--- a/td/telegram/net/AuthDataShared.h
+++ b/td/telegram/net/AuthDataShared.h
@@ -7,10 +7,10 @@
 #pragma once
 
 #include "td/telegram/net/DcId.h"
-#include "td/telegram/net/PublicRsaKeyShared.h"
 
 #include "td/mtproto/AuthData.h"
 #include "td/mtproto/AuthKey.h"
+#include "td/mtproto/RSA.h"
 
 #include "td/utils/common.h"
 #include "td/utils/ScopeGuard.h"
@@ -33,7 +33,7 @@ class AuthDataShared {
   };
 
   virtual DcId dc_id() const = 0;
-  virtual const std::shared_ptr<PublicRsaKeyShared> &public_rsa_key() = 0;
+  virtual const std::shared_ptr<mtproto::PublicRsaKeyInterface> &public_rsa_key() = 0;
   virtual mtproto::AuthKey get_auth_key() = 0;
   virtual void set_auth_key(const mtproto::AuthKey &auth_key) = 0;
   virtual void update_server_time_difference(double diff, bool force) = 0;
@@ -45,7 +45,8 @@ class AuthDataShared {
 
   static mtproto::AuthKey get_auth_key_for_dc(DcId dc_id);
 
-  static std::shared_ptr<AuthDataShared> create(DcId dc_id, std::shared_ptr<PublicRsaKeyShared> public_rsa_key,
+  static std::shared_ptr<AuthDataShared> create(DcId dc_id,
+                                                std::shared_ptr<mtproto::PublicRsaKeyInterface> public_rsa_key,
                                                 std::shared_ptr<Guard> guard);
 };