README.md

Krypto

Crypto library in Elixir, using Erlang public_key and OpenSSL ports

Installation

The package can be installed as:

1. Add krypto to your list of dependencies in mix.exs:

def deps do
    [{:krypto, "~> 0.1.4"}]
end

2. Ensure krypto is started before your application:

def application do
    [applications: [:krypto]]
end

Overview

Krypto is an opinionated, light-weight crypto implementation for Elixir with native OpenSSL bindings.

Example

You can use krypto in your Elixir application to do the following:

1. Generate an RSA key pair (in DER format):

{ publicKey, privateKey } = Krypto.RSA.getKeypair()

2. Encrypt using the public key:

encrypted_secret = Krypto.RSA.encrypt("Super secret message", publicKey)

3. Decrypt using the private key:

decrypted_secret = Krypto.RSA.decrypt(encrypted_secret, privateKey)

4. Sign a message:

message = "This message should be signed",
signature = Krypto.RSA.sign(message, privateKey)
if Krypto.RSA.verify(message, signatre, publicKey) do
    IO.puts "This signature matches!"
end

5. Get message digests:

hash_md5 = Krypto.Hash.md5("Hash me in md5!")
hash_sha224 = Krypto.Hash.sha224("Hash me in sha224!")
hash_sha256 = Krypto.Hash.sha256("Hash me in sha256 (our prefered one)!")
hash_sha384 = Krypto.Hash.sha384("Hash me in sha384!")