keccak-chain-sonobe/circuit/keccak-chain.circom

pragma circom 2.0.0;

include "node_modules/keccak256-circom/circuits/keccak.circom";

template KeccakChain () {
    signal input ivc_input[32*8];
    signal output ivc_output[32*8];   

    component keccak = Keccak(32*8, 32*8);

    for (var i=0; i<32*8; i++) {
        keccak.in[i] <== ivc_input[i];
    }
    for (var i=0; i<32*8; i++) {
    	ivc_output[i] <== keccak.out[i];
    }
}

// for a input & output of 32 bytes:
component main { public [ivc_input] } = KeccakChain();