import "./1024bit" as sha256; // A function that takes 2 bool[256] arrays as inputs // and returns their sha256 full round output as an array of 256 bool. def main(bool[256] a, bool[256] b) -> bool[256] { // Hash is computed on the full 512bit block size // padding does not fit in the primary block // add dummy block (single "1" followed by "0" + total length) bool[256] dummyblock1 = [true, ...[false; 255]]; // Total length of message is 512 bits: 0b1000000000 bool[256] dummyblock2 = [...[false; 246], true, ...[false; 9]]; bool[256] digest = sha256(a, b, dummyblock1, dummyblock2); return digest; }