How do I use pfx files with https in Nodejs?

Question

I have the following files available:

.cer file (DER encoded)
.pvk file
.pfx file (password protected file containing both the .cer and .pvk files together)
passphrase

I've found solutions here and here suggesting I can use my .pfx file directly. The examples use .p12 files, while mine is .pfx - I believe they are the same thing.

const fs = require('fs');
const axios = require('axios');
const https = require('https');

const response = await axios.request({
    url: *URL_HERE*,
    method: 'post',
    headers: {
        "content-type": "application/json",
    },
    data: JSON.stringify({
        *YOUR_DATA_HERE*
    }),
    httpsAgent: new https.Agent({
        passphrase: *PASSPHRASE_HERE*,
        pfx: fs.readFileSync(__dirname + '\\..\\certificates\\certificate.p12'),
    })
});

But this gives me the following error:

Error: header too long at Object.createSecureContext

I think this error usually means an incorrect file format - expecting headers of a different length because it's the wrong format.

NodeJS documentation on tls.createSecureContext suggests I need to be converting my .cer file from DER to PEM format?

Can I convert from DER to PEM using NodeJS crypto?

UPDATE

I tried this solution, which got me close:

const cer_der = ***my binary certificate file***;
const prefix = '-----BEGIN CERTIFICATE-----\n';
const postfix = '-----END CERTIFICATE-----';
const cer_pem = prefix + Buffer.from(cer_der, 'binary').toString('base64').match(/.{0,64}/g).join('\n') + postfix;

But the text string is not base64. Maybe I don't need to use Buffer.from

How do I use pfx files with https in Nodejs?

0 Answers0