| CIP No. | Title | Author | Status | Type | Created |
|---|---|---|---|---|---|
62 |
Enable EC-Related Builtin Contracts |
Chenxing Li (@ChenxingLi) |
Final |
Spec Breaking |
2020-11-17 |
Enable big integer modular exponentiation and alt-bn128 related builtin contract.
EVM has the following four builtin contract: modexp alt_bn128_add, alt_bn128_mul and alt_bn128_pairing, which have not been enabled in Conflux. It's the time to enable them!
These builtin contract can support some crypto-related usage, e.g., verifying proof of zk-snark.
We define the following parameters cip-62-activation-block.
During executing transactions, if current block number < cip-62-activation-block, the addresses 0x5, 0x6, 0x7 and 0x8 are regarded as normal contracts. If current block number >= cip-62-activation-block, the addresses 0x5, 0x6, 0x7, 0x8 implements builtin contracts modexp alt_bn128_add, alt_bn128_mul and alt_bn128_pairing respectively. The behavior and gas plan of these contracts inherits Ethereum's settings. (EIP-196, EIP-197, EIP-198).
This CIP is spec breaking.
TBA.
TBA.
No security considerations.
Copyright and related rights waived via CC0.