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Stricter validation of EIP-7702 transactions #11885

Merged
merged 14 commits into from
Sep 12, 2024
Merged

Stricter validation of EIP-7702 transactions #11885

merged 14 commits into from
Sep 12, 2024

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yperbasis
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@yperbasis yperbasis commented Sep 5, 2024

Check (in the txpool and in the main code) that an EIP-7702 transaction is valid, namely that:

  • to != nil
  • len(authorization_list) != 0
  • authorization.chain_id is uint256
  • authorization.nonce is uint64
  • authorization.address is bytes20
  • authorization.y_parity == 0 || authorization.y_parity == 1
  • authorization.r is uint256
  • authorization.s is uint256 and authorization.s <= secp256k1n/2

This PR doesn't implement ethereum/EIPs#8865 or ethereum/EIPs#8845

@yperbasis yperbasis added the pectra The Prague/Electra protocol upgrade label Sep 5, 2024
@yperbasis yperbasis marked this pull request as ready for review September 11, 2024 10:27
return txpoolcfg.NoAuthorizations
}
for i := 0; i < authorizationLen; i++ {
if txn.Authorizations[i].S.Gt(crypto.Secp256k1halfN) {
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should we just use TransactionSignatureIsValid here, as it it used in authority recover, and if it fails there, the entire tx fails. So maybe we can check all aspects of the signature
ref: link

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Makes sense, but I'm holding off until ethereum/EIPs#8865 is merged.

@somnathb1 somnathb1 merged commit 60675ae into main Sep 12, 2024
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@somnathb1 somnathb1 deleted the txpool7702 branch September 12, 2024 09:35
somnathb1 pushed a commit that referenced this pull request Sep 12, 2024
Check (in the txpool and in the main code) that an EIP-7702 transaction
is
[valid](https://eips.ethereum.org/EIPS/eip-7702#set-code-transaction),
namely that:

- `to != nil`
- `len(authorization_list) != 0`
- `authorization.chain_id` is `uint256`
- `authorization.nonce` is `uint64`
- `authorization.address` is `bytes20`
- `authorization.y_parity == 0 || authorization.y_parity == 1`
- `authorization.r` is `uint256`
- `authorization.s` is `uint256` and `authorization.s <= secp256k1n/2`

This PR doesn't implement ethereum/EIPs#8865 or
ethereum/EIPs#8845
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3 participants