View source for Signature creation in Python3

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Russw_ on 20211029 @01:00am EST said:
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GOT IT! This works for me:


 basicSpendBundle = await alice.spend_coin(testcoin, pushtx = False, args = spendArgs)

 // assemble the aggregated BLS signatures on their own...

 //  - in this case there is only 1 sig, so `aggSig == sig1`, and `AugScheme.MPL.aggregate` is

 //    not actually needed here... but just add more to sigs when needed

 privateKey = alice.sk()

 messageToSign = clvm.casts.int_to_bytes(msg_id)

 sig1 = blspy.AugSchemeMPL.sign(privateKey, messageToSign)

 sigs = [sig1]                                # not actually needed with a single sig

 aggSig = blspy.AugSchemeMPL.aggregate(sigs)  # not actually needed with a single sig

 //This is the way to make the combined spend...

 // - clean separation between assembling the Coin spends and the agg sigs works well

 combinedSpend = cdv.test.SpendBundle(coinSpends, aggSig)  # in this single sig case, sig1 would be fine here

 //verify both (even though sig1 and combinedSpend.aggregated_signature are the same in this case)

 assert blspy.AugSchemeMPL.verify(alice.pk_, messageToSign, sig1)

 assert blspy.AugSchemeMPL.verify(alice.pk_, messageToSign, combinedSpend.aggregated_signature)

 result = await network.push_tx(combinedSpend)