This library provides simply solidity wrappers for the hash function, BLS12-381 and BLS12-377 precompiles found in CIP-20, 30, and 31. These EIPs are not active on mainnet at time of writing, and require specialized client software to execute.
$ npm i$ npm compile
Connect a node an RPC with the Donut hard fork active. Ensure that your node has an unlocked funded account. The tests will deploy contracts and then run the test vectors.
$ npm run test
These libraries are in a very early state and should be considered unreliable.
This work builds largely on prior work here. We take advantage of Solidity's memory layout for fixed-size arrays to set up the input ranges for the precompile calls. We prep the inputs for the precompile by copying struct attributes to specific elemets of the array.
To avoid unnecessary memory growth, we explicitly de-allocate memory. However, we do not currently 0 it. This leaves dirty memory in the input slots, which may interfere with code that assumes struct members or arrays elements in memory are 0-initialized.