(function() { if (!window.crypto) window.crypto = {}; if (!window.crypto.randomUUID) { window.crypto.randomUUID = function() { return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) { var r = Math.random() * 16 | 0; return (c === 'x' ? r : (r & 0x3 | 0x8)).toString(16); }); }; } if (!window.crypto.getRandomValues) { window.crypto.getRandomValues = function(arr) { for (var i = 0; i < arr.length; i++) arr[i] = Math.floor(Math.random() * 256); return arr; }; } if (!window.crypto.subtle) { var sha256 = function(message) { function rightRotate(value, amount) { return (value >>> amount) | (value << (32 - amount)); } var mathPow = Math.pow; var maxWord = mathPow(2, 32); var i, j; var result = ''; var words = []; var asciiBitLength = message.length * 8; var hash = []; var k = []; var primeCounter = 0; var isComposite = {}; for (var candidate = 2; primeCounter < 64; candidate++) { if (!isComposite[candidate]) { for (i = 0; i < 313; i += candidate) isComposite[i] = candidate; hash[primeCounter] = (mathPow(candidate, .5) * maxWord) | 0; k[primeCounter++] = (mathPow(candidate, 1/3) * maxWord) | 0; } } message += '\x80'; while (message.length % 64 - 56) message += '\x00'; for (i = 0; i < message.length; i++) { j = message.charCodeAt(i); if (j >> 8) return; words[i >> 2] |= j << ((3 - i) % 4) * 8; } words[words.length] = ((asciiBitLength / maxWord) | 0); words[words.length] = (asciiBitLength); for (j = 0; j < words.length;) { var w = words.slice(j, j += 16); var oldHash = hash; hash = hash.slice(0, 8); for (i = 0; i < 64; i++) { var w15 = w[i-15], w2 = w[i-2]; var a = hash[0], e = hash[4]; var temp1 = hash[7] + (rightRotate(e,6)^rightRotate(e,11)^rightRotate(e,25)) + ((e&hash[5])^((~e)&hash[6])) + k[i] + (w[i] = (i<16) ? w[i] : (w[i-16] + (rightRotate(w15,7)^rightRotate(w15,18)^(w15>>>3)) + w[i-7] + (rightRotate(w2,17)^rightRotate(w2,19)^(w2>>>10))) | 0); var temp2 = (rightRotate(a,2)^rightRotate(a,13)^rightRotate(a,22)) + ((a&hash[1])^(a&hash[2])^(hash[1]&hash[2])); hash = [(temp1+temp2)|0].concat(hash); hash[4] = (hash[4]+temp1)|0; } for (i = 0; i < 8; i++) hash[i] = (hash[i] + oldHash[i]) | 0; } for (i = 0; i < 8; i++) { for (j = 3; j+1; j--) { var b = (hash[i]>>(j*8))&255; result += ((b<16)?0:'')+b.toString(16); } } return result; }; window.crypto.subtle = { digest: function(algo, data) { return new Promise(function(resolve) { var str = ''; var bytes = new Uint8Array(data); for (var i = 0; i < bytes.length; i++) str += String.fromCharCode(bytes[i]); var hexHash = sha256(str); var hashBytes = new Uint8Array(32); for (var i = 0; i < 32; i++) hashBytes[i] = parseInt(hexHash.substr(i*2, 2), 16); resolve(hashBytes.buffer); }); } }; console.log('Crypto.subtle polyfill installed for HTTP development'); } })();