fix #4099: serialisation of txns with negative version number

2018-03-13 01:02:03 +01:00
parent 87aee10047
commit a6841cbd5f
2 changed files with 8 additions and 0 deletions
--- a/lib/bitcoin.py
+++ b/lib/bitcoin.py
@@ -144,6 +144,9 @@ def rev_hex(s):

 def int_to_hex(i, length=1):
    assert isinstance(i, int)
+    if i < 0:
+        # two's complement
+        i = pow(256, length) + i
    s = hex(i)[2:].rstrip('L')
    s = "0"*(2*length - len(s)) + s
    return rev_hex(s)