Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 | 11x 11x 11x 11x 11x 11x 844x 844x 844x 844x 1062216x 1062216x 1061090x 1061090x 1061090x 1047348x 1x 1x 1x 1x 1062216x 3x 3x 1x 1x 1x 1x 1x 1x 1x 1x 2x 1047348x 1x 1x 1124x 1124x 1124x 1124x 844x 844x 11x 11x 11x 403x 403x 403x 403x 403x 403x 31552x 31552x 6112x 6112x 31552x 25440x 25440x 25440x 25440x 25440x 1441x 1441x 25440x 20785x 20785x 20785x 20785x 23999x 240x 240x 240x 240x 3214x 2974x 2974x 2974x 2974x 22466x 22466x 25440x 42721x 42721x 2047x 2047x 2047x 40674x 40674x 40674x 40674x 25440x 2047x 2047x 2047x 2047x 20419x 25440x 3x 3x 25440x 20416x 20416x 25440x 31552x 2x 2x 2x 31552x 403x 403x 403x 11x 11x 11x 11x 11x 432x 432x 432x 432x 7181x 7181x 7181x 431x 432x 432x 344x 344x 344x 431x 432x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 830x 830x 830x 830x 830x 830x 830x 830x 830x 830x 830x 830x 830x 830x 830x 830x 830x 830x 830x 830x 830x 17736x 17736x 851328x 851328x 851328x 851328x 851328x 851328x 17736x 17736x 17736x 17736x 17736x 17736x 17736x 17736x 17736x 1135104x 1135104x 1135104x 1135104x 1135104x 1135104x 1135104x 1135104x 1135104x 1135104x 1135104x 1135104x 1135104x 1135104x 1135104x 17736x 17736x 17736x 17736x 17736x 17736x 17736x 17736x 17736x 829x 829x 829x 829x 829x 829x 829x 829x 829x 829x 829x 829x 830x 11x 11x 11x 347x 347x 347x 347x 347x 347x 22208x 22208x 22208x 22208x 347x 347x 347x 347x 11x 2359x 2359x 2353x 2359x 2351x 2359x | // Pure JS UTF-8, Base64, SHA-256 and HMAC-SHA256. The mini program runtime has neither
// TextEncoder nor crypto.subtle, so the SDK carries its own implementations.
import { toUint8 } from './util.js';
/** UTF-8 encode a string. Lone surrogates become U+FFFD, the same as TextEncoder. */
export function utf8Encode(str) {
const s = String(str);
const out = new Uint8Array(s.length * 3);
let p = 0;
for (let i = 0; i < s.length; i++) {
let c = s.charCodeAt(i);
if (c < 0x80) {
out[p++] = c;
continue;
}
if (c < 0x800) {
out[p++] = 0xc0 | (c >> 6);
out[p++] = 0x80 | (c & 0x3f);
continue;
}
if (c >= 0xd800 && c <= 0xdbff) {
const d = i + 1 < s.length ? s.charCodeAt(i + 1) : 0;
if (d >= 0xdc00 && d <= 0xdfff) {
const cp = 0x10000 + ((c - 0xd800) << 10) + (d - 0xdc00);
out[p++] = 0xf0 | (cp >> 18);
out[p++] = 0x80 | ((cp >> 12) & 0x3f);
out[p++] = 0x80 | ((cp >> 6) & 0x3f);
out[p++] = 0x80 | (cp & 0x3f);
i++;
continue;
}
c = 0xfffd;
} else if (c >= 0xdc00 && c <= 0xdfff) {
c = 0xfffd;
}
out[p++] = 0xe0 | (c >> 12);
out[p++] = 0x80 | ((c >> 6) & 0x3f);
out[p++] = 0x80 | (c & 0x3f);
}
return out.slice(0, p);
}
/** UTF-8 decode with U+FFFD replacement for malformed input (WHATWG decoder rules). */
export function utf8Decode(input) {
const b = toBytes(input);
const n = b.length;
let out = '';
let units = [];
let i = 0;
while (i < n) {
const c = b[i];
if (c < 0x80) {
units.push(c);
i++;
} else {
let need = 0;
let cp = 0;
let lower = 0x80;
let upper = 0xbf;
if (c >= 0xc2 && c <= 0xdf) {
need = 1;
cp = c & 0x1f;
} else if (c >= 0xe0 && c <= 0xef) {
need = 2;
cp = c & 0x0f;
if (c === 0xe0) lower = 0xa0;
if (c === 0xed) upper = 0x9f;
} else if (c >= 0xf0 && c <= 0xf4) {
need = 3;
cp = c & 0x07;
if (c === 0xf0) lower = 0x90;
if (c === 0xf4) upper = 0x8f;
} else {
units.push(0xfffd);
i++;
continue;
}
let j = 1;
let ok = true;
for (; j <= need; j++) {
const d = i + j < n ? b[i + j] : -1;
if (d < lower || d > upper) {
ok = false;
break;
}
lower = 0x80;
upper = 0xbf;
cp = (cp << 6) | (d & 0x3f);
}
if (!ok) {
units.push(0xfffd);
i += j;
continue;
}
i += need + 1;
if (cp >= 0x10000) {
cp -= 0x10000;
units.push(0xd800 + (cp >> 10), 0xdc00 + (cp & 0x3ff));
} else {
units.push(cp);
}
}
if (units.length >= 8192) {
out += String.fromCharCode.apply(null, units);
units = [];
}
}
if (units.length) out += String.fromCharCode.apply(null, units);
return out;
}
const B64 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
/** Standard Base64 with padding. */
export function base64Encode(input) {
const b = toBytes(input);
let out = '';
let i = 0;
for (; i + 2 < b.length; i += 3) {
const v = (b[i] << 16) | (b[i + 1] << 8) | b[i + 2];
out += B64[(v >>> 18) & 63] + B64[(v >>> 12) & 63] + B64[(v >>> 6) & 63] + B64[v & 63];
}
const rest = b.length - i;
if (rest === 1) {
const v = b[i] << 16;
out += B64[(v >>> 18) & 63] + B64[(v >>> 12) & 63] + '==';
} else if (rest === 2) {
const v = (b[i] << 16) | (b[i + 1] << 8);
out += B64[(v >>> 18) & 63] + B64[(v >>> 12) & 63] + B64[(v >>> 6) & 63] + '=';
}
return out;
}
const K = [
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2,
];
/** SHA-256 digest (32 bytes) of a string (UTF-8) or bytes. */
export function sha256(input) {
const msg = toBytes(input);
const n = msg.length;
const total = Math.ceil((n + 9) / 64) * 64;
const buf = new Uint8Array(total);
buf.set(msg);
buf[n] = 0x80;
const dv = new DataView(buf.buffer);
dv.setUint32(total - 8, Math.floor(n / 0x20000000), false);
dv.setUint32(total - 4, (n * 8) >>> 0, false);
let h0 = 0x6a09e667;
let h1 = 0xbb67ae85 | 0;
let h2 = 0x3c6ef372;
let h3 = 0xa54ff53a | 0;
let h4 = 0x510e527f;
let h5 = 0x9b05688c | 0;
let h6 = 0x1f83d9ab;
let h7 = 0x5be0cd19;
const w = new Int32Array(64);
for (let off = 0; off < total; off += 64) {
for (let t = 0; t < 16; t++) w[t] = dv.getInt32(off + t * 4, false);
for (let t = 16; t < 64; t++) {
const x = w[t - 15];
const y = w[t - 2];
const s0 = ((x >>> 7) | (x << 25)) ^ ((x >>> 18) | (x << 14)) ^ (x >>> 3);
const s1 = ((y >>> 17) | (y << 15)) ^ ((y >>> 19) | (y << 13)) ^ (y >>> 10);
w[t] = (w[t - 16] + s0 + w[t - 7] + s1) | 0;
}
let a = h0;
let b = h1;
let c = h2;
let d = h3;
let e = h4;
let f = h5;
let g = h6;
let h = h7;
for (let t = 0; t < 64; t++) {
const S1 = ((e >>> 6) | (e << 26)) ^ ((e >>> 11) | (e << 21)) ^ ((e >>> 25) | (e << 7));
const ch = (e & f) ^ (~e & g);
const t1 = (h + S1 + ch + K[t] + w[t]) | 0;
const S0 = ((a >>> 2) | (a << 30)) ^ ((a >>> 13) | (a << 19)) ^ ((a >>> 22) | (a << 10));
const maj = (a & b) ^ (a & c) ^ (b & c);
const t2 = (S0 + maj) | 0;
h = g;
g = f;
f = e;
e = (d + t1) | 0;
d = c;
c = b;
b = a;
a = (t1 + t2) | 0;
}
h0 = (h0 + a) | 0;
h1 = (h1 + b) | 0;
h2 = (h2 + c) | 0;
h3 = (h3 + d) | 0;
h4 = (h4 + e) | 0;
h5 = (h5 + f) | 0;
h6 = (h6 + g) | 0;
h7 = (h7 + h) | 0;
}
const out = new Uint8Array(32);
const odv = new DataView(out.buffer);
odv.setInt32(0, h0, false);
odv.setInt32(4, h1, false);
odv.setInt32(8, h2, false);
odv.setInt32(12, h3, false);
odv.setInt32(16, h4, false);
odv.setInt32(20, h5, false);
odv.setInt32(24, h6, false);
odv.setInt32(28, h7, false);
return out;
}
/** HMAC-SHA256 (RFC 2104) of message under key. Strings are UTF-8 encoded. */
export function hmacSha256(key, message) {
let k = toBytes(key);
if (k.length > 64) k = sha256(k);
const msg = toBytes(message);
const inner = new Uint8Array(64 + msg.length);
const outer = new Uint8Array(64 + 32);
for (let i = 0; i < 64; i++) {
const kb = i < k.length ? k[i] : 0;
inner[i] = kb ^ 0x36;
outer[i] = kb ^ 0x5c;
}
inner.set(msg, 64);
outer.set(sha256(inner), 64);
return sha256(outer);
}
function toBytes(input) {
if (typeof input === 'string') return utf8Encode(input);
const u8 = toUint8(input);
if (!u8) throw new TypeError('expected a string, ArrayBuffer or ArrayBufferView');
return u8;
}
|