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BIP-352: sending: add step to fail if input privkeys sum a is zero

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The test vector data was generated with a Python script
(see bc15ea8d0f/contrib/silentpayments/submit_input_pubkeys_infinity_tx.py),
leading to the following output:

---------------------------------------------------------------------------------------------------------
     Privkey 1: a6df6a0bb448992a301df4258e06a89fe7cf7146f59ac3bd5ff26083acb22ceb
     Privkey 2: 592095f44bb766d5cfe20bda71f9575ed2df6b9fb9addc7e5fdffe0923841456
      Pubkey 1: 02557ef3e55b0a52489b4454c1169e06bdea43687a69c1f190eb50781644ab6975
      Pubkey 2: 03557ef3e55b0a52489b4454c1169e06bdea43687a69c1f190eb50781644ab6975
scriptPubKey 1: 00149d9e24f9fab4e35bf1a6df4b46cb533296ac0792
scriptPubKey 2: 00149860538b5575962776ed0814ae222c7d60c72d7b
     Address 1: tb1qnk0zf706kn34hudxma95dj6nx2t2cpujz7j5t5
     Address 2: tb1qnps98z64wktzwahdpq22ug3v04svwttm7gs8wn
-> Funding tx submitted: 3a286147b25e16ae80aff406f2673c6e565418c40f45c071245cdebc8a94174e

Taproot output address for spending tx: tb1pqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqkgkkf5
-> Spending tx submitted: fe788cf6578d547819def43d79e6c8f0153d4885f5a343d12bd03f34507aabd6
---------------------------------------------------------------------------------------------------------
This commit is contained in:
Sebastian Falbesoner
2024-06-22 01:18:37 +02:00
parent 70a714372f
commit 47033c62dc
3 changed files with 50 additions and 1 deletions
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3
bip-0352/reference.py
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@@ -127,6 +127,9 @@ def create_outputs(input_priv_keys: List[Tuple[ECKey, bool]], outpoints: List[CO
negated_keys.append(k)
a_sum = sum(negated_keys)
if not a_sum.valid:
# Input privkeys sum is zero -> fail
return []
input_hash = get_input_hash(outpoints, a_sum * G)
silent_payment_groups: Dict[ECPubKey, List[ECPubKey]] = {}
for recipient in recipients: