📅 Original date posted:2017-01-25
📝 Original message:Den 25 jan. 2017 08:06 skrev "Johnson Lau" <jl2012 at xbt.hk>:
What you describe is not a fix of replay attack. By confirming the same tx
in both network, the tx has been already replayed. Their child txs do not
matter.
Read it again.
The validation algorithm would be extended so that the transaction can't be
replayed, because replaying it in the other network REQUIRES a child
transaction in the same block that is valid, a child transaction the is
unique to the network. By doing this policy change simultaneously in both
networks, old pre-signed transactions *can not be replayed by anybody but
the owner* of the coins (as he must spend them immediately in the child
transaction).
It means that as soon as spent, the UTXO sets immediately and irrevocably
diverges across the two networks. Which is the entire point, isn't it?
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Natanael [ARCHIVE] /
npub179…lpmjt
2023-06-07 17:55:38
in reply to nevent1q…8d0x
Author Public Key
npub1798ncudyucap9jzzujjsgufx8tdykm8auzfledjcs6f6wf4ekqvq8lpmjtPublished at
2023-06-07 17:55:38Event JSON
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"content": "📅 Original date posted:2017-01-25\n📝 Original message:Den 25 jan. 2017 08:06 skrev \"Johnson Lau\" \u003cjl2012 at xbt.hk\u003e:\n\nWhat you describe is not a fix of replay attack. By confirming the same tx\nin both network, the tx has been already replayed. Their child txs do not\nmatter.\n\n\nRead it again.\n\nThe validation algorithm would be extended so that the transaction can't be\nreplayed, because replaying it in the other network REQUIRES a child\ntransaction in the same block that is valid, a child transaction the is\nunique to the network. By doing this policy change simultaneously in both\nnetworks, old pre-signed transactions *can not be replayed by anybody but\nthe owner* of the coins (as he must spend them immediately in the child\ntransaction).\n\nIt means that as soon as spent, the UTXO sets immediately and irrevocably\ndiverges across the two networks. Which is the entire point, isn't it?\n-------------- next part --------------\nAn HTML attachment was scrubbed...\nURL: \u003chttp://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20170125/14eae723/attachment.html\u003e",
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