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use dual state in ExtCodeHash opcode #1115

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trung opened this issue Jan 20, 2021 · 0 comments · Fixed by #1105
Closed

use dual state in ExtCodeHash opcode #1115

trung opened this issue Jan 20, 2021 · 0 comments · Fixed by #1105

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@trung
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trung commented Jan 20, 2021

Opcode EXTCODEHASH is being introduced in EIP-1052 and implemented in geth PR ethereum/go-ethereum#17202

GoQuorum must be updated to reflect the dual state implementation for this opcode.

https://github.com/ConsenSys/quorum/blob/7b726385216c44e55fc6b6191a022fe598c102d4/core/vm/instructions.go#L551-L560

A potential impact is when a private contract tries to use EXTCODEHASH of a public contract. However, the lookup is done in the private state instead of public state.
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Serve multiple tenants from a single node trung/quorum
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@trung