(function() { if (typeof window !== 'undefined') { function polyfill(obj, prop, value) { try { if (obj && !obj[prop]) { Object.defineProperty(obj, prop, { value: value, configurable: true, writable: true }); } } catch (e) { try { if (obj && !obj[prop]) { obj[prop] = value; } } catch (err) { console.warn('Failed to define polyfill property ' + prop, err); } } } if (!window.crypto) { try { Object.defineProperty(window, 'crypto', { value: {}, configurable: true, writable: true }); } catch (e) { try { window.crypto = {}; } catch (err) { console.warn('Failed to define window.crypto', err); } } } var cryptoObj = window.crypto || {}; var cryptoProto = typeof Crypto !== 'undefined' ? Crypto.prototype : cryptoObj; var randomUUIDImpl = function() { return ([1e7]+-1e3+-4e3+-8e3+-1e11).replace(/[018]/g, function(c) { return (c ^ (cryptoObj.getRandomValues ? cryptoObj.getRandomValues(new Uint8Array(1))[0] : Math.floor(Math.random() * 256)) & 15 >> c / 4).toString(16); }); }; var digestImpl = { digest: function(algo, data) { return new Promise(function(resolve) { try { var uint8; if (data.byteLength !== undefined) { uint8 = new Uint8Array(data.buffer || data, data.byteOffset || 0, data.byteLength); } else { uint8 = new Uint8Array(data); } var words = []; var len = uint8.length; for (var i = 0; i < len; i++) { words[i >> 2] |= uint8[i] << (24 - (i % 4) * 8); } var bits = len * 8; words[len >> 2] |= 0x80 << (24 - (len % 4) * 8); while ((words.length * 4) % 64 !== 56) { words.push(0); } words.push((bits / 0x100000000) | 0); words.push(bits | 0); var 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 ]; var H = [ 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 ]; function rightRotate(x, n) { return (x >>> n) | (x << (32 - n)); } for (var i = 0; i < words.length; i += 16) { var w = words.slice(i, i + 16); for (var t = 16; t < 64; t++) { var s0 = (rightRotate(w[t-15], 7) ^ rightRotate(w[t-15], 18) ^ (w[t-15] >>> 3)); var s1 = (rightRotate(w[t-2], 17) ^ rightRotate(w[t-2], 19) ^ (w[t-2] >>> 10)); w[t] = (w[t-16] + s0 + w[t-7] + s1) | 0; } var a = H[0], b = H[1], c = H[2], d = H[3], e = H[4], f = H[5], g = H[6], h = H[7]; for (var t = 0; t < 64; t++) { var S1 = (rightRotate(e, 6) ^ rightRotate(e, 11) ^ rightRotate(e, 25)); var ch = ((e & f) ^ (~e & g)); var temp1 = (h + S1 + ch + K[t] + w[t]) | 0; var S0 = (rightRotate(a, 2) ^ rightRotate(a, 13) ^ rightRotate(a, 22)); var maj = ((a & b) ^ (a & c) ^ (b & c)); var temp2 = (S0 + maj) | 0; h = g; g = f; f = e; e = (d + temp1) | 0; d = c; c = b; b = a; a = (temp1 + temp2) | 0; } H[0] = (H[0] + a) | 0; H[1] = (H[1] + b) | 0; H[2] = (H[2] + c) | 0; H[3] = (H[3] + d) | 0; H[4] = (H[4] + e) | 0; H[5] = (H[5] + f) | 0; H[6] = (H[6] + g) | 0; H[7] = (H[7] + h) | 0; } var res = new Uint8Array(32); for (var i = 0; i < 8; i++) { res[i*4] = (H[i] >>> 24) & 0xff; res[i*4+1] = (H[i] >>> 16) & 0xff; res[i*4+2] = (H[i] >>> 8) & 0xff; res[i*4+3] = H[i] & 0xff; } resolve(res.buffer); } catch (err) { console.error('SHA-256 polyfill error', err); resolve(new ArrayBuffer(32)); } }); } }; if (!cryptoObj.getRandomValues) { var getRandomValuesImpl = function(array) { for (var i = 0; i < array.length; i++) { array[i] = Math.floor(Math.random() * 256); } return array; }; polyfill(cryptoObj, 'getRandomValues', getRandomValuesImpl); polyfill(cryptoProto, 'getRandomValues', getRandomValuesImpl); } polyfill(cryptoObj, 'randomUUID', randomUUIDImpl); polyfill(cryptoProto, 'randomUUID', randomUUIDImpl); if (!cryptoObj.subtle) { polyfill(cryptoObj, 'subtle', digestImpl); polyfill(cryptoProto, 'subtle', digestImpl); } } })();

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