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Input Secret, see TOTP code
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.7.2/css/all.min.css"> | |
| <title>TOTP</title> | |
| <style> | |
| * { | |
| padding: 0; | |
| margin: 0; | |
| font-family: Arial, sans-serif; | |
| box-sizing: border-box; | |
| } | |
| body { | |
| background-color: #e8f0f7; | |
| width: 100%; | |
| height: 100vh; | |
| display: flex; | |
| align-items: center; | |
| justify-content: center; | |
| } | |
| #qrcode { | |
| display: block; | |
| width: 100%; | |
| text-align: center; | |
| } | |
| .circular-container { | |
| position: relative; | |
| width: 55px; | |
| height: 55px; | |
| display: flex; | |
| align-items: center; | |
| justify-content: center; | |
| border-radius: 50%; | |
| background-color: #e8f0f7; | |
| box-shadow: 6px 6px 10px -1px rgba(0, 0, 0, 0.15), | |
| -6px -6px 10px -1px rgba(255, 255, 255, 0.7); | |
| } | |
| .inner-shadow { | |
| position: absolute; | |
| width: 42px; | |
| height: 42px; | |
| background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.7), rgba(0, 0, 0, 0.1)); | |
| border-radius: 50%; | |
| box-shadow: inset 6px 6px 10px -1px rgba(0, 0, 0, 0.15), | |
| inset -6px -6px 10px -1px rgba(255, 255, 255, 0.7); | |
| } | |
| .circular-container svg { | |
| transform: rotate(-90deg); | |
| } | |
| .bar-text { | |
| position: absolute; | |
| top: 50%; | |
| left: 50%; | |
| transform: translate(-50%, -50%); | |
| font-size: 22px; | |
| font-weight: bold; | |
| } | |
| .totpArea { | |
| display: flex; | |
| flex-wrap: wrap; | |
| align-items: center; | |
| justify-content: center; | |
| margin-top: -2.5em; | |
| } | |
| .inputArea { | |
| display: flex; | |
| flex-wrap: wrap; | |
| align-items: center; | |
| justify-content: center; | |
| margin: 10px; | |
| } | |
| .inputArea input { | |
| width: 39ch; | |
| } | |
| .break { | |
| flex-basis: 100%; | |
| width: 0; | |
| height: 0; | |
| } | |
| .inputArea #TOTP { | |
| font-size: 1.2em; | |
| font-weight: bold; | |
| margin: 39px 9px 9px 0; | |
| padding: 3px; | |
| border: 1px solid #4390e1; | |
| border-radius: 5px; | |
| box-shadow: 6px 6px 10px -1px rgba(0, 0, 0, 0.15), | |
| -6px -6px 10px -1px rgba(255, 255, 255, 0.7); | |
| } | |
| .clipbrd { | |
| font-size: 1.7em; | |
| margin: 27px 0 0 3px; | |
| padding: 3px 4px 4px 3px; | |
| border-radius: 5px; | |
| border: 1px solid lightgray; | |
| } | |
| .clipbrd:hover { | |
| background-color: #63b3f3; | |
| cursor: pointer; | |
| } | |
| .clipbrd:active { | |
| background-color: #53a3e3; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div class="totpArea"> | |
| <div class="inputArea"> | |
| <div id="qrcode"></div> | |
| <label for="secret">Secret: </label> | |
| <input id="secret" value="GIYEE6LUMVZUY33OM5ZWKY3SMV2EWZLZ" oninput="updateQRCode();"> | |
| <div class="break"></div> | |
| <div id="TOTP"></div> | |
| <i class="fa-regular fa-clipboard clipbrd" | |
| onClick="navigator.clipboard.writeText(document.getElementById('TOTP').innerHTML.replace(' ', ''));"></i> | |
| </div> | |
| <div class="break"></div> | |
| <div class="circular-container"> | |
| <svg width="80" height="80" viewBox="0 0 100 100"> | |
| <!-- Background Circle --> | |
| <circle cx="50" cy="50" r="42" stroke="#4285f4" stroke-width="12" fill="none" /> | |
| <!-- Progress Circle --> | |
| <circle id="progress-bar" cx="50" cy="50" r="42" stroke="#ddd" stroke-width="12" fill="none" | |
| stroke-linecap="butt" /> | |
| </svg> | |
| <div class="inner-shadow"></div> | |
| <div class="bar-text">30</div> | |
| </div> | |
| </div> | |
| <script> | |
| /** https://github.com/datalog/qrcode-svg under MIT license */ | |
| 'use strict'; function QRCode(r) { var n, t, o, e, a = [], f = [], i = Math.max, u = Math.min, h = Math.abs, v = Math.ceil, c = /^[0-9]*$/, s = /^[A-Z0-9 $%*+.\/:-]*$/, l = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:", g = [[-1, 7, 10, 15, 20, 26, 18, 20, 24, 30, 18, 20, 24, 26, 30, 22, 24, 28, 30, 28, 28, 28, 28, 30, 30, 26, 28, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30], [-1, 10, 16, 26, 18, 24, 16, 18, 22, 22, 26, 30, 22, 22, 24, 24, 28, 28, 26, 26, 26, 26, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28], [-1, 13, 22, 18, 26, 18, 24, 18, 22, 20, 24, 28, 26, 24, 20, 30, 24, 28, 28, 26, 30, 28, 30, 30, 30, 30, 28, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30], [-1, 17, 28, 22, 16, 22, 28, 26, 26, 24, 28, 24, 28, 22, 24, 24, 30, 28, 28, 26, 28, 30, 24, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30]], d = [[-1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 4, 4, 4, 4, 4, 6, 6, 6, 6, 7, 8, 8, 9, 9, 10, 12, 12, 12, 13, 14, 15, 16, 17, 18, 19, 19, 20, 21, 22, 24, 25], [-1, 1, 1, 1, 2, 2, 4, 4, 4, 5, 5, 5, 8, 9, 9, 10, 10, 11, 13, 14, 16, 17, 17, 18, 20, 21, 23, 25, 26, 28, 29, 31, 33, 35, 37, 38, 40, 43, 45, 47, 49], [-1, 1, 1, 2, 2, 4, 4, 6, 6, 8, 8, 8, 10, 12, 16, 12, 17, 16, 18, 21, 20, 23, 23, 25, 27, 29, 34, 34, 35, 38, 40, 43, 45, 48, 51, 53, 56, 59, 62, 65, 68], [-1, 1, 1, 2, 4, 4, 4, 5, 6, 8, 8, 11, 11, 16, 16, 18, 16, 19, 21, 25, 25, 25, 34, 30, 32, 35, 37, 40, 42, 45, 48, 51, 54, 57, 60, 63, 66, 70, 74, 77, 81]], m = { L: [0, 1], M: [1, 0], Q: [2, 3], H: [3, 2] }, p = function (r, n) { for (var t = 0, o = 8; o--;)t = t << 1 ^ 285 * (t >>> 7) ^ (n >>> o & 1) * r; return t }, C = function (r, n) { for (var t = [], o = r.length, e = o; e;)for (var a = r[o - e--] ^ t.shift(), f = n.length; f--;)t[f] ^= p(n[f], a); return t }, w = function (r) { for (var n = [function () { return 0 == (t + o) % 2 }, function () { return 0 == t % 2 }, function () { return 0 == o % 3 }, function () { return 0 == (t + o) % 3 }, function () { return 0 == ((t / 2 | 0) + (o / 3 | 0)) % 2 }, function () { return 0 == t * o % 2 + t * o % 3 }, function () { return 0 == (t * o % 2 + t * o % 3) % 2 }, function () { return 0 == ((t + o) % 2 + t * o % 3) % 2 }][r], t = e; t--;)for (var o = e; o--;)f[t][o] || (a[t][o] ^= n()) }, b = function () { for (var r = function (r, n) { n[6] || (r += e), n.shift(), n.push(r) }, n = function (n, o, a) { return n && (r(o, a), o = 0), r(o += e, a), t(a) }, t = function (r) { var n = r[5], t = n > 0 && r[4] == n && r[3] == 3 * n && r[2] == n && r[1] == n; return (t && r[6] >= 4 * n && r[0] >= n ? 1 : 0) + (t && r[0] >= 4 * n && r[6] >= n ? 1 : 0) }, o = 0, f = e * e, i = 0, u = e; u--;) { for (var c = [0, 0, 0, 0, 0, 0, 0], s = [0, 0, 0, 0, 0, 0, 0], l = !1, g = !1, d = 0, m = 0, p = e; p--;) { a[u][p] == l ? 5 == ++d ? o += 3 : d > 5 && o++ : (r(d, c), o += 40 * t(c), d = 1, l = a[u][p]), a[p][u] == g ? 5 == ++m ? o += 3 : m > 5 && o++ : (r(m, s), o += 40 * t(s), m = 1, g = a[p][u]); var C = a[u][p]; C && i++, p && u && C == a[u][p - 1] && C == a[u - 1][p] && C == a[u - 1][p - 1] && (o += 3) } o += 40 * n(l, d, c) + 40 * n(g, m, s) } return o += 10 * (v(h(20 * i - 10 * f) / f) - 1) }, A = function (r, n, t) { for (; n--;)t.push(r >>> n & 1) }, M = function (r, n) { return r.numBitsCharCount[(n + 7) / 17 | 0] }, B = function (r, n) { return 0 != (r >>> n & 1) }, x = function (r, n) { for (var t = 0, o = r.length; o--;) { var e = r[o], a = M(e, n); if (1 << a <= e.numChars) return 1 / 0; t += 4 + a + e.bitData.length } return t }, D = function (r) { if (r < 1 || r > 40) throw "Version number out of range"; var n = (16 * r + 128) * r + 64; if (r >= 2) { var t = r / 7 | 2; n -= (25 * t - 10) * t - 55, r >= 7 && (n -= 36) } return n }, I = function (r, n) { for (var t = 2; -2 <= t; t--)for (var o = 2; -2 <= o; o--)E(r + o, n + t, 1 != i(h(o), h(t))) }, H = function (r, n) { for (var t = 4; -4 <= t; t--)for (var o = 4; -4 <= o; o--) { var a = i(h(o), h(t)), f = r + o, u = n + t; 0 <= f && f < e && 0 <= u && u < e && E(f, u, 2 != a && 4 != a) } }, $ = function (r) { for (var n = t[1] << 3 | r, o = n, a = 10; a--;)o = o << 1 ^ 1335 * (o >>> 9); var f = 21522 ^ (n << 10 | o); if (f >>> 15 != 0) throw "Assertion error"; for (a = 0; a <= 5; a++)E(8, a, B(f, a)); E(8, 7, B(f, 6)), E(8, 8, B(f, 7)), E(7, 8, B(f, 8)); for (a = 9; a < 15; a++)E(14 - a, 8, B(f, a)); for (a = 0; a < 8; a++)E(e - 1 - a, 8, B(f, a)); for (a = 8; a < 15; a++)E(8, e - 15 + a, B(f, a)); E(8, e - 8, 1) }, O = function () { for (var r = e; r--;)E(6, r, 0 == r % 2), E(r, 6, 0 == r % 2); for (var t = function () { var r = []; if (n > 1) for (var t = 2 + (n / 7 | 0), o = 32 == n ? 26 : 2 * v((e - 13) / (2 * t - 2)); t--;)r[t] = t * o + 6; return r }(), o = r = t.length; o--;)for (var a = r; a--;)0 == a && 0 == o || 0 == a && o == r - 1 || a == r - 1 && 0 == o || I(t[a], t[o]); H(3, 3), H(e - 4, 3), H(3, e - 4), $(0), function () { if (!(7 > n)) { for (var r = n, t = 12; t--;)r = r << 1 ^ 7973 * (r >>> 11); var o = n << 12 | r; if (t = 18, o >>> 18 != 0) throw "Assertion error"; for (; t--;) { var a = e - 11 + t % 3, f = t / 3 | 0, i = B(o, t); E(a, f, i), E(f, a, i) } } }() }, Q = function (r) { if (r.length != V(n, t)) throw "Invalid argument"; for (var o = d[t[0]][n], e = g[t[0]][n], a = D(n) / 8 | 0, f = o - a % o, i = a / o | 0, u = [], h = function (r) { var n = 1, t = []; t[r - 1] = 1; for (var o = 0; o < r; o++) { for (var e = 0; e < r; e++)t[e] = p(t[e], n) ^ t[e + 1]; n = p(n, 2) } return t }(e), v = 0, c = 0; v < o; v++) { var s = r.slice(c, c + i - e + (v < f ? 0 : 1)); c += s.length; var l = C(s, h); v < f && s.push(0), u.push(s.concat(l)) } var m = []; for (v = 0; v < u[0].length; v++)for (var w = 0; w < u.length; w++)(v != i - e || w >= f) && m.push(u[w][v]); return m }, S = function (r) { for (var n = [], t = (r = encodeURI(r), 0); t < r.length; t++)"%" != r.charAt(t) ? n.push(r.charCodeAt(t)) : (n.push(parseInt(r.substr(t + 1, 2), 16)), t += 2); return n }, V = function (r, n) { return (D(r) / 8 | 0) - g[n[0]][r] * d[n[0]][r] }, E = function (r, n, t) { a[n][r] = t ? 1 : 0, f[n][r] = 1 }, R = function (r) { for (var n = [], t = 0, o = r; t < o.length; t++) { var e = o[t]; A(e, 8, n) } return { modeBits: 4, numBitsCharCount: [8, 16, 16], numChars: r.length, bitData: n } }, Z = function (r) { if (!c.test(r)) throw "String contains non-numeric characters"; for (var n = [], t = 0; t < r.length;) { var o = u(r.length - t, 3); A(parseInt(r.substr(t, o), 10), 3 * o + 1, n), t += o } return { modeBits: 1, numBitsCharCount: [10, 12, 14], numChars: r.length, bitData: n } }, z = function (r) { if (!s.test(r)) throw "String contains unencodable characters in alphanumeric mode"; var n, t = []; for (n = 0; n + 2 <= r.length; n += 2) { var o = 45 * l.indexOf(r.charAt(n)); o += l.indexOf(r.charAt(n + 1)), A(o, 11, t) } return n < r.length && A(l.indexOf(r.charAt(n)), 6, t), { modeBits: 2, numBitsCharCount: [9, 11, 13], numChars: r.length, bitData: t } }, L = function (r, n, t, o) { var e = function (r) { return "" == r ? [] : c.test(r) ? [Z(r)] : s.test(r) ? [z(r)] : [R(S(r))] }(r); return U(e, n, t, o) }, N = function (r, i, u, h) { t = i, o = h; for (var v = e = 4 * (n = r) + 17; v--;)a[v] = [], f[v] = []; if (O(), function (r) { for (var n = 0, t = 1, o = e - 1, i = o; i > 0; i -= 2) { 6 == i && --i; for (var u = 0 > (t = -t) ? o : 0, h = 0; h < e; ++h) { for (var v = i; v > i - 2; --v)f[u][v] || (a[u][v] = B(r[n >>> 3], 7 - (7 & n)), ++n); u += t } } }(Q(u)), 0 > o) { var c = 1e9; for (v = 8; v--;) { w(v), $(v); var s = b(); c > s && (c = s, o = v), w(v) } } w(o), $(o), f = [] }, U = function (r, n, t, o, e, a) { if (void 0 === e && (e = 1), void 0 === a && (a = 40), void 0 === o && (o = -1), void 0 === t && (t = !0), !(1 <= e && e <= a && a <= 40) || o < -1 || o > 7) throw "Invalid value"; for (var f = [], i = 236, h = [], v = e; ;) { var c = x(r, v); if (c <= 8 * V(v, n)) break; if (v >= a) throw "Data too long"; v++ } if (t) for (var s = (l = [m.H, m.Q, m.M]).length; s--;)c <= 8 * V(v, l[s]) && (n = l[s]); for (var l = 0; l < r.length; l++) { var g = r[l]; A(g.modeBits, 4, f), A(g.numChars, M(g, v), f); for (var d = 0, p = g.bitData; d < p.length; d++)f.push(p[d]) } if (f.length != c) throw "Assertion error"; var C = 8 * V(v, n); if (f.length > C) throw "Assertion error"; if (A(0, u(4, C - f.length), f), A(0, (8 - f.length % 8) % 8, f), f.length % 8 != 0) throw "Assertion error"; for (; f.length < C;)A(i, 8, f), i ^= 253; for (s = f.length; s--;)h[s >>> 3] |= f[s] << 7 - (7 & s); return N(v, n, h, o) }; return function () { function n(r) { return /^#[0-9a-f]{3}(?:[0-9a-f]{3})?$/i.test(r) } function t(r, n) { for (var t in r = document.createElementNS(s, r), n || {}) r.setAttribute(t, n[t]); return r } var o, f, i, u, v, c, s = "http://www.w3.org/2000/svg", l = "", g = "string" == typeof r ? { msg: r } : r || {}, d = g.pal || ["#000"], p = h(g.dim) || 256, C = [1, 0, 0, 1, c = (c = h(g.pad)) > -1 ? c : 4, c], w = n(w = d[0]) ? w : "#000", b = n(b = d[1]) ? b : 0, A = g.vrb ? 0 : 1; for (L(g.msg || "", m[g.ecl] || m.M, 0 == g.ecb ? 0 : 1, g.mtx), v = e + 2 * c, i = e; i--;)for (u = 0, f = e; f--;)a[i][f] && (A ? (u++, a[i][f - 1] || (l += "M" + f + "," + i + "h" + u + "v1h-" + u + "v-1z", u = 0)) : l += "M" + f + "," + i + "h1v1h-1v-1z"); return o = t("svg", { viewBox: [0, 0, v, v].join(" "), width: p, height: p, fill: w, "shape-rendering": "crispEdges", xmlns: s, version: "1.1" }), b && o.appendChild(t("path", { fill: b, d: "M0,0V" + v + "H" + v + "V0H0Z" })), o.appendChild(t("path", { transform: "matrix(" + C + ")", d: l })), o }() } | |
| </script> | |
| <script> | |
| async function TOTP(secret) { | |
| async function gen(key32) { | |
| const keybytes = bigIntToByteArray(BigInt('0x' + base32tohex(key32))); | |
| const timeFactor = int32ToByteArray(Math.floor((Date.now() / 1000) / 30)); | |
| // compute HMACSHA1(key, shift) | |
| const key = await crypto.subtle.importKey("raw", keybytes, | |
| { name: "HMAC", hash: { name: "SHA-1" } }, | |
| false, // no export | |
| ["sign"] // what this key can do | |
| ); | |
| const signature = await crypto.subtle.sign("HMAC", key, timeFactor); | |
| return truncate(new Uint8Array(signature)); | |
| } | |
| /** This is supposed to convert 32-bit value to 8 byte array, padded left */ | |
| function int32ToByteArray(time) { | |
| const buf = new ArrayBuffer(8); | |
| const view = new DataView(buf); | |
| view.setUint32(4, time, false); | |
| return buf; | |
| } | |
| /** This is supposed to convert bitint to byte array in correct endianness */ | |
| function bigIntToByteArray(bigNumber) { | |
| let bytes = []; | |
| while (bigNumber > 0) { | |
| bytes.push(Number(bigNumber % BigInt(256))); | |
| bigNumber = bigNumber / BigInt(256); | |
| }; | |
| let result = Uint8Array.from(bytes); | |
| return result.reverse(); | |
| } | |
| function truncate(hmac) { | |
| const offset = hmac[hmac.length - 1] & 0xf; | |
| const bin_code = | |
| (hmac[offset + 0] & 0x7f) << 24 | | |
| (hmac[offset + 1] & 0xff) << 16 | | |
| (hmac[offset + 2] & 0xff) << 8 | | |
| (hmac[offset + 3] & 0xff); | |
| let code = (bin_code % Math.pow(10, 6)).toString().padStart(6, '0'); | |
| return code; | |
| } | |
| function base32tohex(base32) { | |
| for (var base32chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567", bits = "", hex = "", i = 0; i < base32.length; i++) { | |
| var val = base32chars.indexOf(base32.charAt(i).toUpperCase()); | |
| bits += val.toString(2).padStart(5, '0'); | |
| } | |
| for (i = 0; i + 4 <= bits.length; i += 4) { | |
| var chunk = bits.substr(i, 4); | |
| hex += parseInt(chunk, 2).toString(16) | |
| } | |
| return hex; | |
| } | |
| return await gen(secret); | |
| } | |
| function remainingSeconds() { | |
| return Math.floor(30 - ((((Date.now() / 1000) / 30) - Math.floor((Date.now() / 1000) / 30)) * 30)); | |
| } | |
| let progressCircle = document.getElementById("progress-bar"); | |
| let barText = document.querySelector(".bar-text"); | |
| window.maxVal = parseInt(barText.innerHTML); | |
| window.currVal = remainingSeconds(); | |
| window.firstRun = true; | |
| let speed = 100; // Update frequency of animation. | |
| let circumference = 2 * Math.PI * parseInt(progressCircle.getAttribute("r")); | |
| progressCircle.style.strokeDasharray = circumference; | |
| progressCircle.style.strokeDashoffset = circumference; | |
| function updateProgress() { | |
| progressCircle.style.transition = `stroke-dashoffset ${1}s linear`; | |
| if (window.currVal <= 0) { | |
| window.currVal = window.maxVal; | |
| progressCircle.style.transition = `stroke-dashoffset ${0.06}s linear`; | |
| } else if (window.firstRun) { | |
| progressCircle.style.transition = `stroke-dashoffset ${0.01}s linear`; | |
| window.firstRun = false; | |
| } | |
| let specialOffset = ((window.currVal === window.maxVal) ? 0 : 0.5); | |
| progressCircle.style.strokeDashoffset = ((window.currVal - specialOffset) / window.maxVal) * circumference; | |
| barText.innerHTML = window.currVal; | |
| } | |
| setInterval(updateProgress, speed); | |
| function updateStuff() { // This is where you change the value. | |
| window.currVal = remainingSeconds(); | |
| (async () => { | |
| var val = await TOTP(document.getElementById('secret').value); | |
| document.getElementById('TOTP').innerHTML = val.substr(0, 3) + " " + val.substr(3); | |
| })(); | |
| setTimeout(updateStuff, 1000); | |
| } | |
| updateStuff(); | |
| function updateQRCode() { | |
| svgNode = QRCode(`otpauth://totp/Issuer:AccountName?secret=${document.getElementById('secret').value}&issuer=Issuer`); | |
| document.getElementById('qrcode').innerHTML = ''; | |
| document.getElementById('qrcode').appendChild(svgNode); | |
| } | |
| updateQRCode(); | |
| </script> | |
| </body> | |
| </html> |
Author
Author
Simple TOTP code generator in JavaScript:
async function TOTP(t){return await async function(t){const n=function(t){let n=[];for(;t>0;)n.push(Number(t%BigInt(256))),t/=BigInt(256);return Uint8Array.from(n).reverse()}(BigInt("0x"+function(t){for(var n="ABCDEFGHIJKLMNOPQRSTUVWXYZ234567",r="",e="",a=0;a<t.length;a++){r+=n.indexOf(t.charAt(a).toUpperCase()).toString(2).padStart(5,"0")}for(a=0;a+4<=r.length;a+=4){var o=r.substr(a,4);e+=parseInt(o,2).toString(16)}return e}(t))),r=function(t){const n=new ArrayBuffer(8);return new DataView(n).setUint32(4,t,!1),n}(Math.floor(Date.now()/1e3/30)),e=await crypto.subtle.importKey("raw",n,{name:"HMAC",hash:{name:"SHA-1"}},!1,["sign"]),a=await crypto.subtle.sign("HMAC",e,r);return function(t){const n=15&t[t.length-1];return(((127&t[n+0])<<24|(255&t[n+1])<<16|(255&t[n+2])<<8|255&t[n+3])%Math.pow(10,6)).toString().padStart(6,"0")}(new Uint8Array(a))}(t)}To use:
await TOTP("GIYEE6LUMVZUY33OM5ZWKY3SMV2EWZLZ");
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Can be viewed here:
https://gistpreview.github.io/?a15398e784a5d7db45d779cce740a5dc/totp.html