Nitrogen Peroxide Monoxide

    cert-info

    1.5.1 • Public • Published

    cert-info.js

    Read basic info from a cert.pem / x509 certificate.

    Used for Greenlock.js

    Features

    | <175 lines of code | 1.7k gzipped | 4.4k minified | 8.8k with comments |

    • Parses x.509 certificate schemas
      • DER/ASN.1
      • PEM (base64-encoded DER)
      • Subject
      • SAN extension (altNames)
      • Issuance Date (notBefore)
      • Expiry Date (notAfter)
    • VanillaJS, Zero Dependencies
      • Node.js
      • Browsers (built, publishing soon)

    Install

    # bin 
    npm install --global cert-info
     
    # node.js library 
    npm install --save cert-info

    Usage

    CLI

    For basic info (subject, altnames, issuedAt, expiresAt):

    cert-info /path/to/cert.pem

    node.js

    'use strict';
     
    var certinfo = require('cert-info');
    var cert = fs.readFile('cert.pem', 'ascii', function (err, certstr) {
     
      // basic info
      console.info(certinfo.info(certstr));
     
      // if you need to submit a bug report
      console.info(certinfo.debug(certstr));
    });

    Example output:

    {
      "subject": "localhost.example.com",
      "altnames": [
        "localhost.example.com"
      ],
      "issuedAt": 1465516800000,
      "expiresAt": 1499731199000
    }

    With a few small changes this could also work in the browser (it has no dependencies and all of the non-browser things are on the Enc object).

    Legal

    cert-info.js | MPL-2.0 | Terms of Use | Privacy Policy

    Install

    npm i cert-info

    DownloadsWeekly Downloads

    25,363

    Version

    1.5.1

    License

    MPL-2.0

    Unpacked Size

    32.3 kB

    Total Files

    9

    Last publish

    Collaborators

    • coolaj86