Function shaStepped

src/App.js:285–349

(message, firstLoop, secondLoop, chunksLoop)

  }

  function shaStepped(message, firstLoop, secondLoop, chunksLoop) {
    let h0 = 0x6a09e667; let h1 = 0xbb67ae85; let h2 = 0x3c6ef372; let h3 = 0xa54ff53a; let h4 = 0x510e527f; let h5 = 0x9b05688c; let h6 = 0x1f83d9ab; let h7 = 0x5be0cd19;
    let s0, s1, S1, S0, a, b, c, d, e, f, g, h, ch, temp1, temp2, maj = 0;
    let w = [];
    let hsBefore = [];
    let lettersBefore = [];
    let input = padding(message, inputBase);
    let chunks = chunkString(input);

    setChunksCount(chunks.length);

    for(let n = 0; n < chunksLoop; n++) {
      let chunk = chunks[n];

      w = new Array(64).fill('0'.padStart(32, '0'));

      chunkString(chunk, 32).forEach((messageWord, i) => {
        w[i] = parseInt(messageWord, 2)
      });

      let firstLoopForCurrentChunk = n < chunksLoop - 1 ? 63 : firstLoop;
      for(let i = 16; i <= firstLoopForCurrentChunk; i++) { //63
        s0 = (rotateRight(w[i-15], 7) ^ rotateRight(w[i-15], 18) ^ (w[i-15] >>> 3)) >>> 0;
        s1 = (rotateRight(w[i-2], 17) ^ rotateRight(w[i-2], 19) ^ (w[i-2] >>> 10)) >>> 0;
        w[i] = (w[i-16] + s0 + w[i-7] + s1)%(2**32)
      }

      a = h0; b = h1; c = h2; d = h3; e = h4; f = h5; g = h6; h = h7;

      let secondLoopForCurrentChunk = n < chunksLoop - 1 ? 63 : secondLoop;
      for(let i = 0; i <= secondLoopForCurrentChunk; i++) { // 63
        S1 = (rotateRight(e, 6) ^ rotateRight(e, 11) ^ rotateRight(e, 25)) >>> 0;
        ch = (e & f) ^ ((~e) & g) >>> 0;
        temp1 = (h + S1 + ch + k[i] + w[i])%(2**32) >>> 0;
        S0 = (rotateRight(a, 2) ^ rotateRight(a, 13) ^ rotateRight(a, 22)) >>> 0;
        maj = ((a & b) ^ (a & c) ^ (b & c)) >>> 0;
        temp2 = (S0 + maj)%(2**32) >>> 0;

        lettersBefore = [a, b, c, d, e, f, g, h];

        h = g >>> 0;
        g = f >>> 0;
        f = e >>> 0;
        e = (d + temp1)%(2**32);
        d = c >>> 0;
        c = b >>> 0;
        b = a >>> 0;
        a = (temp1 + temp2)%(2**32);
      }

      hsBefore = [h0, h1, h2, h3, h4, h5, h6, h7];

      h0 = (h0 + a)%(2**32);
      h1 = (h1 + b)%(2**32);
      h2 = (h2 + c)%(2**32);
      h3 = (h3 + d)%(2**32);
      h4 = (h4 + e)%(2**32);
      h5 = (h5 + f)%(2**32);