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JavaScript generic ASN.1 parser (mirror)
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889// Base64 JavaScript decoder// Copyright (c) 2008-2018 Lapo Luchini <lapo@lapo.it>
// Permission to use, copy, modify, and/or distribute this software for any// purpose with or without fee is hereby granted, provided that the above// copyright notice and this permission notice appear in all copies.// // THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
(function (undefined) {"use strict";
var Base64 = {}, decoder;
Base64.decode = function (a) { var i; if (decoder === undefined) { var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/", ignore = "= \f\n\r\t\u00A0\u2028\u2029"; decoder = []; for (i = 0; i < 64; ++i) decoder[b64.charAt(i)] = i; for (i = 0; i < ignore.length; ++i) decoder[ignore.charAt(i)] = -1; // RFC 3548 URL & file safe encoding decoder['-'] = decoder['+']; decoder['_'] = decoder['/']; } var out = []; var bits = 0, char_count = 0; for (i = 0; i < a.length; ++i) { var c = a.charAt(i); if (c == '=') break; c = decoder[c]; if (c == -1) continue; if (c === undefined) throw 'Illegal character at offset ' + i; bits |= c; if (++char_count >= 4) { out[out.length] = (bits >> 16); out[out.length] = (bits >> 8) & 0xFF; out[out.length] = bits & 0xFF; bits = 0; char_count = 0; } else { bits <<= 6; } } switch (char_count) { case 1: throw "Base64 encoding incomplete: at least 2 bits missing"; case 2: out[out.length] = (bits >> 10); break; case 3: out[out.length] = (bits >> 16); out[out.length] = (bits >> 8) & 0xFF; break; } return out;};
Base64.re = /-----BEGIN [^-]+-----([A-Za-z0-9+\/=\s]+)-----END [^-]+-----|begin-base64[^\n]+\n([A-Za-z0-9+\/=\s]+)====/;Base64.unarmor = function (a) { var m = Base64.re.exec(a); if (m) { if (m[1]) a = m[1]; else if (m[2]) a = m[2]; else throw "RegExp out of sync"; } return Base64.decode(a);};
// export globalsif (typeof module !== 'undefined') { module.exports = Base64; } else { window.Base64 = Base64; }})();