48 lines
1.1 KiB
JavaScript
48 lines
1.1 KiB
JavaScript
'use strict';
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var PEM = module.exports;
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var Enc = require('./encoding.js');
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PEM.RSA_OBJID = '06 09 2A864886F70D010101'
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.replace(/\s+/g, '').toLowerCase();
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PEM.parseBlock = function pemToDer(pem) {
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var typ;
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var pub;
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var hex;
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var der = Enc.base64ToBuf(pem.split(/\n/).filter(function (line, i) {
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if (0 === i) {
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if (/ PUBLIC /.test(line)) {
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pub = true;
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} else if (/ PRIVATE /.test(line)) {
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pub = false;
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}
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if (/ RSA /.test(line)) {
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typ = 'RSA';
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}
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}
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return !/---/.test(line);
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}).join(''));
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if (!typ) {
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hex = Enc.bufToHex(der);
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if (-1 !== hex.indexOf(PEM.RSA_OBJID)) {
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typ = 'RSA';
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}
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}
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if (!typ) {
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console.warn("Definitely not an RSA PKCS#8 because there's no RSA Object ID in the DER body.");
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console.warn("Probably not an RSA PKCS#1 because 'RSA' wasn't in the PEM type string.");
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}
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return { kty: typ, pub: pub, der: der };
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};
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PEM.packBlock = function (opts) {
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// TODO allow for headers?
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return '-----BEGIN ' + opts.type + '-----\n'
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+ Enc.bufToBase64(opts.bytes).match(/.{1,64}/g).join('\n') + '\n'
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+ '-----END ' + opts.type + '-----'
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;
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};
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