138 lines
2.8 KiB
JavaScript
138 lines
2.8 KiB
JavaScript
(function (exports) {
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var Enc = exports.Enc = {};
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Enc.bufToBin = function (buf) {
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var bin = '';
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// cannot use .map() because Uint8Array would return only 0s
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buf.forEach(function (ch) {
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bin += String.fromCharCode(ch);
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});
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return bin;
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};
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Enc.bufToHex = function toHex(u8) {
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var hex = [];
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var i, h;
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var len = (u8.byteLength || u8.length);
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for (i = 0; i < len; i += 1) {
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h = u8[i].toString(16);
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if (h.length % 2) { h = '0' + h; }
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hex.push(h);
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}
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return hex.join('').toLowerCase();
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};
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Enc.urlBase64ToBase64 = function urlsafeBase64ToBase64(str) {
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var r = str % 4;
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if (2 === r) {
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str += '==';
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} else if (3 === r) {
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str += '=';
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}
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return str.replace(/-/g, '+').replace(/_/g, '/');
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};
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Enc.base64ToBuf = function (b64) {
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return Enc.binToBuf(atob(b64));
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};
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Enc.binToBuf = function (bin) {
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var arr = bin.split('').map(function (ch) {
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return ch.charCodeAt(0);
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});
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return 'undefined' !== typeof Uint8Array ? new Uint8Array(arr) : arr;
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};
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Enc.bufToHex = function (u8) {
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var hex = [];
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var i, h;
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var len = (u8.byteLength || u8.length);
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for (i = 0; i < len; i += 1) {
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h = u8[i].toString(16);
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if (h.length % 2) { h = '0' + h; }
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hex.push(h);
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}
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return hex.join('').toLowerCase();
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};
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Enc.numToHex = function (d) {
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d = d.toString(16);
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if (d.length % 2) {
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return '0' + d;
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}
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return d;
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};
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Enc.bufToUrlBase64 = function (u8) {
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return Enc.bufToBase64(u8)
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.replace(/\+/g, '-').replace(/\//g, '_').replace(/=/g, '');
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};
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Enc.bufToBase64 = function (u8) {
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var bin = '';
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u8.forEach(function (i) {
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bin += String.fromCharCode(i);
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});
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return btoa(bin);
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};
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Enc.hexToBuf = function (hex) {
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var arr = [];
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hex.match(/.{2}/g).forEach(function (h) {
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arr.push(parseInt(h, 16));
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});
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return 'undefined' !== typeof Uint8Array ? new Uint8Array(arr) : arr;
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};
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Enc.numToHex = function (d) {
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d = d.toString(16);
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if (d.length % 2) {
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return '0' + d;
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}
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return d;
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};
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//
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// JWK to SSH (tested working)
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//
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Enc.base64ToHex = function (b64) {
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var bin = atob(Enc.urlBase64ToBase64(b64));
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return Enc.binToHex(bin);
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};
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Enc.binToHex = function (bin) {
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return bin.split('').map(function (ch) {
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var h = ch.charCodeAt(0).toString(16);
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if (h.length % 2) { h = '0' + h; }
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return h;
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}).join('');
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};
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// TODO are there any nuance differences here?
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Enc.utf8ToHex = Enc.binToHex;
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Enc.hexToBase64 = function (hex) {
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return btoa(Enc.hexToBin(hex));
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};
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Enc.hexToBin = function (hex) {
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return hex.match(/.{2}/g).map(function (h) {
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return String.fromCharCode(parseInt(h, 16));
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}).join('');
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};
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Enc.urlBase64ToBase64 = function urlsafeBase64ToBase64(str) {
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var r = str % 4;
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if (2 === r) {
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str += '==';
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} else if (3 === r) {
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str += '=';
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}
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return str.replace(/-/g, '+').replace(/_/g, '/');
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};
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}('undefined' !== typeof exports ? module.exports : window ));
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