diff --git a/Source/Core/Core/IOS/ES/Formats.cpp b/Source/Core/Core/IOS/ES/Formats.cpp
index e0cc70dea3..158eebd7f0 100644
--- a/Source/Core/Core/IOS/ES/Formats.cpp
+++ b/Source/Core/Core/IOS/ES/Formats.cpp
@@ -375,7 +375,7 @@ s32 TicketReader::Unpersonalise()
     return ret;
 
   const auto public_key_iter = ticket_begin + offsetof(Ticket, server_public_key);
-  ret = iosc.ImportPublicKey(public_handle, &*public_key_iter, PID_ES);
+  ret = iosc.ImportPublicKey(public_handle, &*public_key_iter, nullptr, PID_ES);
   if (ret != IPC_SUCCESS)
     return ret;
 
diff --git a/Source/Core/Core/IOS/IOSC.cpp b/Source/Core/Core/IOS/IOSC.cpp
index 6a23a0e2b4..e4bd241f0a 100644
--- a/Source/Core/Core/IOS/IOSC.cpp
+++ b/Source/Core/Core/IOS/IOSC.cpp
@@ -101,8 +101,8 @@ ReturnCode IOSC::ImportSecretKey(Handle dest_handle, Handle decrypt_handle, u8*
   return Decrypt(decrypt_handle, iv, encrypted_key, AES128_KEY_SIZE, dest_entry->data.data(), pid);
 }
 
-constexpr size_t ECC233_PUBLIC_KEY_SIZE = 0x3c;
-ReturnCode IOSC::ImportPublicKey(Handle dest_handle, const u8* public_key, u32 pid)
+ReturnCode IOSC::ImportPublicKey(Handle dest_handle, const u8* public_key,
+                                 const u8* public_key_exponent, u32 pid)
 {
   if (!HasOwnership(dest_handle, pid) || IsDefaultHandle(dest_handle))
     return IOSC_EACCES;
@@ -111,11 +111,20 @@ ReturnCode IOSC::ImportPublicKey(Handle dest_handle, const u8* public_key, u32 p
   if (!dest_entry)
     return IOSC_EINVAL;
 
-  // TODO: allow other public key subtypes
-  if (dest_entry->type != TYPE_PUBLIC_KEY || dest_entry->subtype != SUBTYPE_ECC233)
+  if (dest_entry->type != TYPE_PUBLIC_KEY)
     return IOSC_INVALID_OBJTYPE;
 
-  dest_entry->data.assign(public_key, public_key + ECC233_PUBLIC_KEY_SIZE);
+  const size_t size = GetSizeForType(dest_entry->type, dest_entry->subtype);
+  if (size == 0)
+    return IOSC_INVALID_OBJTYPE;
+
+  dest_entry->data.assign(public_key, public_key + size);
+
+  if (dest_entry->subtype == SUBTYPE_RSA2048 || dest_entry->subtype == SUBTYPE_RSA4096)
+  {
+    _assert_(public_key_exponent);
+    std::copy_n(public_key_exponent, 4, dest_entry->misc_data.begin());
+  }
   return IPC_SUCCESS;
 }
 
diff --git a/Source/Core/Core/IOS/IOSC.h b/Source/Core/Core/IOS/IOSC.h
index 080b9942f3..17a43e9b5f 100644
--- a/Source/Core/Core/IOS/IOSC.h
+++ b/Source/Core/Core/IOS/IOSC.h
@@ -172,8 +172,9 @@ public:
   // Import a secret, encrypted key into dest_handle, which will be decrypted using decrypt_handle.
   ReturnCode ImportSecretKey(Handle dest_handle, Handle decrypt_handle, u8* iv,
                              const u8* encrypted_key, u32 pid);
-  // Import a public key.
-  ReturnCode ImportPublicKey(Handle dest_handle, const u8* public_key, u32 pid);
+  // Import a public key. public_key_exponent must be passed for RSA keys.
+  ReturnCode ImportPublicKey(Handle dest_handle, const u8* public_key,
+                             const u8* public_key_exponent, u32 pid);
   // Compute an AES key from an ECDH shared secret.
   ReturnCode ComputeSharedKey(Handle dest_handle, Handle private_handle, Handle public_handle,
                               u32 pid);