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FTX Raises $420M in Series B-1 Raise

I need to calculate AES S-Box using Polynomial ,don’t understand overall calculation procedure .Coding are attached below

function generate(irreducible_poly){ try{ p = parseInt(eval(irreducible_poly.replace(/x/g, ’10’)), 2); } catch(err){ console.log(‘Irreducible Polynomial invalid’); return; } let t = new Uint32Array(256); for (let i = 0, x = 1; i < 256; i ++) { t[i] = x; x ^= (x << 1) ^ ((x >>> 7) * p); } let Sbox = new Uint32Array(256); Sbox[0]::Listen

function generate(irreducible_poly){
try{
p = parseInt(eval(irreducible_poly.replace(/x/g, ’10’)), 2);
} catch(err){
console.log(‘Irreducible Polynomial invalid’);
return;
}

let t = new Uint32Array(256);
for (let i = 0, x = 1; i < 256; i ++) {
    t[i] = x;
    x ^= (x << 1) ^ ((x >>> 7) * p);
}

let Sbox = new Uint32Array(256);
Sbox[0] = 0x63;
for (let i = 0; i < 255; i ++) {
    let x = t[255 - i];
    x |= x << 8;
    x ^= (x >> 4) ^ (x >> 5) ^ (x >> 6) ^ (x >> 7);
    Sbox[t[i]] = (x ^ 0x63) & 0xFF;
}

return Sbox;

}

// Inverse of Sbox
function inverse(sbox){
let InvSbox = new Uint32Array(256);
for (let i =0; i < 256; i++){
InvSbox[i] = sbox.indexOf(i);
}

return InvSbox;

}

FTX Raises $420M in Series B-1 Raise

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