Increment U2F counter before authentication (#1595)

* Fix U2F counter endianness
* Increment U2F counter before using it
* U2F: increment counter before use
* U2F: don't increment on U2fCheckOnly

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>

applications/u2f/u2f.c

@@ -277,8 +277,8 @@ static uint16_t u2f_authenticate(U2fData* U2F, uint8_t* buf) {
     }
     U2F->user_present = false;
 
-    // The 4 byte counter is represented in big endian
-    be_u2f_counter = lfs_tobe32(U2F->counter);
+    // The 4 byte counter is represented in big endian. Increment it before use
+    be_u2f_counter = lfs_tobe32(U2F->counter + 1);
 
     // Generate hash
     sha256_start(&sha_ctx);
@@ -318,8 +318,8 @@ static uint16_t u2f_authenticate(U2fData* U2F, uint8_t* buf) {
     uint8_t signature_len = u2f_der_encode_signature(resp->signature, signature);
     memcpy(resp->signature + signature_len, state_no_error, 2);
 
-    FURI_LOG_D(TAG, "Counter: %lu", U2F->counter);
     U2F->counter++;
+    FURI_LOG_D(TAG, "Counter: %lu", U2F->counter);
     u2f_data_cnt_write(U2F->counter);
 
     if(U2F->callback != NULL) U2F->callback(U2fNotifyAuthSuccess, U2F->context);