fix: stop leak of value of recovered output #3558
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SWvheerden
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philipr-za
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Nov 11, 2021
| // Todo we need to look here that we might want to fail a specific output and not recover it as this | ||
| // will only work if the script is a Nop script. If this is not a Nop script the recovered input | ||
| // will not be spendable. | ||
| let script_key = PrivateKey::random(&mut OsRng); |
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Shouldn't we derive this key from the key manager?
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We can, but this is in effect a single-use key and can be anything. We can also change this on actual spending of the recovered utxo, so makes near enough no difference I think.
philipr-za
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Nov 18, 2021
* development: (32 commits) feat: add atomic swap refund transaction handling (tari-project#3573) feat: improve wallet connectivity status for console wallet (tari-project#3577) v0.21.1 feat: add error codes to LibWallet for CipherSeed errors (tari-project#3578) ci: split cucumber job into two (tari-project#3583) feat(wallet): import utxo’s as EncumberedToBeReceived rather than Unspent (tari-project#3575) docs: rfc 0250_Covenants (tari-project#3574) feat: get fee for transactions for stratum transcoder (tari-project#3571) test: make monerod stagenet usage resilient (tari-project#3572) feat: add atomic swap htlc sending and claiming (tari-project#3552) feat: implement prometheus metrics for base node (tari-project#3563) feat: implement multiple read single write for sqlite (tari-project#3568) feat: trigger time lock balance update when block received (tari-project#3567) test: reduce cucumber ci to critical only (tari-project#3566) test: fix cucumber console wallet startup (tari-project#3564) chore: add node id/public key to log mdc (tari-project#3559) fix: avoid implicit using of the time crate (tari-project#3562) feat: one-click installer - cli edition (tari-project#3534) ci: add workflow dispatch to libwallet build action (tari-project#3556) fix: stop leak of value of recovered output (tari-project#3558) ...
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Description
Updated the recovery of an output to not reuse the blinding factor to use as thescript_key, but rather generate a new key.
Motivation and Context
If the blinding factor is reused as the script_key, on spending you will reveal k.G, this makes guessing v.H trivial and this leaks the k.G value.
How Has This Been Tested?