View Source X509
Elixir package for working with X.509 certificates, Certificate Signing Requests (CSRs), Certificate Revocation Lists (CRLs) and RSA/ECC key pairs.
Requires Erlang/OTP 20.1 or later.
Development and public release of this package were made possible by Bluecode.
usage
Usage
as-a-certificate-authority-ca
As a Certificate Authority (CA)
Generate a self-signed CA certificate and private key, using the root_ca
template:
iex> ca_key = X509.PrivateKey.new_ec(:secp256r1)
{:ECPrivateKey, ...}
iex> ca = X509.Certificate.self_signed(ca_key,
...> "/C=US/ST=CA/L=San Francisco/O=Acme/CN=ECDSA Root CA",
...> template: :root_ca
...>)
{:OTPCertificate, ...}
Use the CA certificate to issue a server certificate, using the default
server
template and the given SAN hostnames:
iex> my_key = X509.PrivateKey.new_ec(:secp256r1)
{:ECPrivateKey, ...}
iex> my_cert = my_key |>
...> X509.PublicKey.derive() |>
...> X509.Certificate.new(
...> "/C=US/ST=CA/L=San Francisco/O=Acme/CN=Sample",
...> ca, ca_key,
...> extensions: [
...> subject_alt_name: X509.Certificate.Extension.subject_alt_name(["example.org", "www.example.org"])
...> ]
...> )
{:OTPCertificate, ...}
Or sign a certificate based on an incoming CSR:
iex> csr = X509.CSR.from_pem!(pem_string)
{:CertificationRequest, ...}
iex> subject = X509.CSR.subject(csr)
{:rdnSequence, ...}
iex> my_cert = csr |>
...> X509.CSR.public_key() |>
...> X509.Certificate.new(
...> subject,
...> ca, ca_key,
...> extensions: [
...> subject_alt_name: X509.Certificate.Extension.subject_alt_name(["example.org", "www.example.org"])
...> ]
...> )
with-public_key-for-encryption-signing
With :public_key
for encryption/signing
Please refer to the documentation for the X509.PrivateKey
module for
examples showing asymmetrical encryption and decryption, as well as message
signing and verification, with Erlang/OTP's :public_key
APIs.
for-tls-client-server-testing
For TLS client/server testing
The x509.gen.selfsigned
Mix task generates a self-signed certificate for use
with a TLS server in development or testing.
The X509.Test.Suite
and X509.Test.Server
modules may be used to create
test cases for TLS clients. The server_test.exs
file can serve as a template: update the request/2
function to invoke of the
TLS client under test, make sure it returns the expected response format, and
update the test server's canned response in the test module's setup if
necessary.
You may want to include the X509 package only in the 'dev' and/or 'test'
environments for this use-case, by adding an only: ...
clause to the
dependency definition in your Mix file.
installation
Installation
Add x509
to your list of dependencies in mix.exs
:
def deps do
[
{:x509, "~> 0.8"}
]
end
Documentation can be found at https://hexdocs.pm/x509.
license
License
Copyright (c) 2019, Bram Verburg All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.