split-input
The aim of the split-input
command is to take a traditional circom input.json
file and secret-share it to a number of participants.
Example
co-circom split-input --circuit test_vectors/poseidon/circuit.circom --link-library test_vectors/poseidon/lib --input test_vectors/poseidon/input.json --protocol REP3 --curve BN254 --out-dir test_vectors/poseidon
The above command takes the input test_vectors/poseidon/input.json
for the circom circuit defined in test_vectors/poseidon/circuit.circom
, with additional required circom library files in test_vectors/poseidon/lib
, and secret shares them using the REP3
MPC protocol. This produces 3 shares input.json.0.shared
, input.json.1.shared
, input.json.2.shared
in the output directory.
These shares can be handed to the 3 different MPC parties for the witness generation phase.
Reference
$ co-circom split-input --help
Splits a JSON input file into secret shares for use in MPC
Usage: co-circom split-input [OPTIONS] --input <INPUT> --circuit <CIRCUIT> --protocol <PROTOCOL> --curve <CURVE> --out-dir <OUT_DIR>
Options:
--input <INPUT> The path to the input JSON file
--circuit <CIRCUIT> The path to the circuit file
--link-library <LINK_LIBRARY> The path to Circom library files
--protocol <PROTOCOL> The MPC protocol to be used [possible values: REP3, SHAMIR]
--curve <CURVE> The pairing friendly curve to be used [possible values: BN254, BLS12-381]
--out-dir <OUT_DIR> The path to the (existing) output directory
-h, --help Print help