old-keypairs.js/lib/pem.js

29 lines
727 B
JavaScript

'use strict';
var PEM = module.exports;
var Enc = require('./encoding.js');
PEM.parseBlock = function pemToDer(pem) {
var lines = pem.trim().split(/\n/);
var end = lines.length - 1;
var head = lines[0].match(/-----BEGIN (.*)-----/);
var foot = lines[end].match(/-----END (.*)-----/);
if (head) {
lines = lines.slice(1, end);
head = head[1];
if (head !== foot[1]) {
throw new Error("headers and footers do not match");
}
}
return { type: head, bytes: Enc.base64ToBuf(lines.join('')) };
};
PEM.packBlock = function (opts) {
return '-----BEGIN ' + opts.type + '-----\n'
+ Enc.bufToBase64(opts.bytes).match(/.{1,64}/g).join('\n') + '\n'
+ '-----END ' + opts.type + '-----'
;
};