# node-x509-certificate

**Repository Path**: mirrors_FGRibreau/node-x509-certificate

## Basic Information

- **Project Name**: node-x509-certificate
- **Description**: Retrieve the public TLS certificate in x509 format from a distant host
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-09-24
- **Last Updated**: 2026-07-04

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# node-x509-certificate
Retrieve the public TLS certificate in x509 format from a distant host

# npm

```shell
npm install x509-certificate --save
```

# usage

### getCertificate(port, host, callback)

```js
getCertificate(443, 'redsmin.com', (err, certificate) => {
  if(err){
    throw err;
  }

  console.log(certificate); // x509 certificate
});
```

- `host`: host the client should connect to
- `port`: port the client should connect to
- `callback(err: {Error,Null}, certificate: String)`

### getCertificate(port, host, options, callback)

```js

getCertificate(443, 'my-very-own-sni-host.com', {
  rejectUnauthorized: true,
  servername: 'my-very-own-sni-host.com'
}, (err, certificate) => {
  if(err){
    throw err;
  }

  console.log(certificate); // x509 certificate
});
```

- `option` object is the same as `tls.connect` option object

# cli

```bash
> npm i x509-certificate -g
> x509-certificate redsmin.com:443

-----BEGIN CERTIFICATE-----
MIIGTzCCBTegAwIBAgIRAKxlFKZ9eTAZfc5c8P1qvq4wDQYJKoZIhvcNAQELBQAw
gZAxCzAJBgNVBAYTAkdCMRswGQYDVQQIExJHcmVhdGVyIE1hbmNoZXN0ZXIxEDAO
BgNVBAcTB1NhbGZvcmQxGjAYBgNVBAoTEUNPTU9ETyBDQSBMaW1pdGVkMTYwNAYD
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-----END CERTIFICATE-----
```

# [Changelog](/CHANGELOG.md)