jsOMS/Security/Hash/Sha1.js

SHA1 = function (l)
{
    function p(b, a)
    {
        return b << a | b >>> 32 - a
    }

    l += '€';

    for (let n = Math, c = [1518500249, 1859775393, 2400959708, 3395469782, 1732584193, 4023233417, 2562383102, 271733878, 3285377520, 4294967295], s = n.ceil(l.length / 4) + 2, q = n.ceil(s / 16), g = [], a = 0, h = [], j, d, e, f, m, i, b, k; a < q; a++) {
        g[a] = [];

        for (k = 0; k < 16; ++k) {
            function o(b, c)
            {
                return l.charCodeAt(a * 64 + k * 4 + b) << c
            }

            g[a][k] = o(0, 24) | o(1, 16) | o(2, 8) | o(3, 0)
        }
    }

    i        = l.length * 8 - 8;
    a        = q - 1;
    g[a][14] = i / (c[9] + 1);
    g[a][14] = n.floor(g[a][14]);
    g[a][15] = i & c[9];

    for (a = 0; a < q; a++) {
        for (b = 0; b < 16; b++) {
            h[b] = g[a][b];
        }

        for (b = 16; b < 80; b++) {
            h[b] = p(h[b - 3] ^ h[b - 8] ^ h[b - 14] ^ h[b - 16], 1);
        }

        j = c[4];
        d = c[5];
        e = c[6];
        f = c[7];
        m = c[8];

        for (b = 0; b < 80; b++) {
            let r = n.floor(b / 20), t = p(j, 5) + (r < 1 ? d & e ^ ~d & f : r == 2 ? d & e ^ d & f ^ e & f : d ^ e ^ f) + m + c[r] + h[b] & c[9];
            m = f;
            f = e;
            e = p(d, 30);
            d = j;
            j = t
        }

        c[4] += j;
        c[5] += d;
        c[6] += e;
        c[7] += f;
        c[8] += m
    }

    i = "";
    for (z = 4; z < 9; z++) {
        for (a = 7; a >= 0; a--) {
            i += ((c[z] & c[9]) >>> a * 4 & 15).toString(16);
        }
    }

    return i;
};