(Go Distribution) A carefully curated collection of Root Certificates for validating the trustworthiness of SSL certificates while verifying the identity of TLS hosts.
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Failed to load latest commit information.
README.md Add specific example for how to use the cert_pool in an HTTP request. Jun 2, 2014


GoCertifi: SSL Certificates for Golang

This Go package contains a CA bundle that you can reference in your Go code. This is useful for systems that do not have CA bundles that Golang can find itself, or where a uniform set of CAs is valuable.

This is the same CA bundle that ships with the Python Requests library, and is a Golang specific port of certifi. The CA bundle is derived from Mozilla's canonical set.

## Usage

You can use the gocertifi package as follows:

import "github.com/certifi/gocertifi"

cert_pool, err := gocertifi.CACerts()

You can use the returned *x509.CertPool as part of an HTTP transport, for example:

import (

// Setup an HTTP client with a custom transport
transport := &http.Transport{
	TLSClientConfig: &tls.Config{RootCAs: cert_pool},
client := &http.Client{Transport: transport}

// Make an HTTP request using our custom transport
resp, err := client.Get("https://example.com")

Detailed Documentation

Import as follows:

import "github.com/certifi/gocertifi"


var ErrParseFailed = errors.New("gocertifi: error when parsing certificates")


func CACerts() (*x509.CertPool, error)

CACerts builds an X.509 certificate pool containing the Mozilla CA Certificate bundle. Returns nil on error along with an appropriate error code.