rasha.js/lib/pem.js

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2018-11-22 07:39:43 +00:00
'use strict';
var PEM = module.exports;
var Enc = require('./encoding.js');
PEM.RSA_OBJID = '06 09 2A864886F70D010101'
.replace(/\s+/g, '').toLowerCase();
PEM.parseBlock = function pemToDer(pem) {
var typ;
var pub;
var hex;
var der = Enc.base64ToBuf(pem.split(/\n/).filter(function (line, i) {
if (0 === i) {
if (/ PUBLIC /.test(line)) {
pub = true;
} else if (/ PRIVATE /.test(line)) {
pub = false;
}
if (/ RSA /.test(line)) {
typ = 'RSA';
}
}
return !/---/.test(line);
}).join(''));
if (!typ) {
hex = Enc.bufToHex(der);
if (-1 !== hex.indexOf(PEM.RSA_OBJID)) {
typ = 'RSA';
}
}
if (!typ) {
console.warn("Definitely not an RSA PKCS#8 because there's no RSA Object ID in the DER body.");
console.warn("Probably not an RSA PKCS#1 because 'RSA' wasn't in the PEM type string.");
}
return { kty: typ, pub: pub, der: der };
};