src/apps/wallet/sign_tx: handle timestamp field

src/apps/wallet/sign_tx/helpers.py

@@ -122,6 +122,7 @@ def sanitize_sign_tx(tx: SignTx) -> SignTx:
     tx.coin_name = tx.coin_name if tx.coin_name is not None else "Bitcoin"
     tx.expiry = tx.expiry if tx.expiry is not None else 0
     tx.overwintered = tx.overwintered if tx.overwintered is not None else False
+    tx.timestamp = tx.timestamp if tx.timestamp is not None else 0
     return tx
 
 
@@ -133,6 +134,7 @@ def sanitize_tx_meta(tx: TransactionType) -> TransactionType:
     tx.extra_data_len = tx.extra_data_len if tx.extra_data_len is not None else 0
     tx.expiry = tx.expiry if tx.expiry is not None else 0
     tx.overwintered = tx.overwintered if tx.overwintered is not None else False
+    tx.timestamp = tx.timestamp if tx.timestamp is not None else 0
     return tx
 
 

src/apps/wallet/sign_tx/signing.py

@@ -391,6 +391,8 @@ async def sign_tx(tx: SignTx, root: bip32.HDNode):
                 write_uint32(h_sign, tx.version_group_id)  # nVersionGroupId
             else:
                 write_uint32(h_sign, tx.version)  # nVersion
+                if tx.timestamp:
+                    write_uint32(h_sign, tx.timestamp)
 
             write_varint(h_sign, tx.inputs_count)
 
@@ -586,6 +588,8 @@ async def get_prevtx_output_value(
         write_uint32(txh, tx.version | DECRED_SERIALIZE_NO_WITNESS)
     else:
         write_uint32(txh, tx.version)  # nVersion
+        if tx.timestamp:
+            write_uint32(txh, tx.timestamp)
 
     write_varint(txh, tx.inputs_cnt)
 
@@ -653,6 +657,8 @@ def get_tx_header(coin: CoinInfo, tx: SignTx, segwit: bool = False):
         write_uint32(w_txi, tx.version_group_id)  # nVersionGroupId
     else:
         write_uint32(w_txi, tx.version)  # nVersion
+        if tx.timestamp:
+            write_uint32(w_txi, tx.timestamp)
     if segwit:
         write_varint(w_txi, 0x00)  # segwit witness marker
         write_varint(w_txi, 0x01)  # segwit witness flag