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Erlang JWT Library

erljwt is a easy to use json web token [JWT] parsing and minting library. JWT is a simple authorization token RFC7519 based on JSON.

erljwt uses the jsone library for json parsing.

supported algorithm (the atom to use)

  • none (none)
  • RS256 (rs256)
  • RS384 (rs384)
  • RS512 (rs512)
  • HS256 (hs256)
  • HS384 (hs384)
  • HS512 (hs512)
  • ES256 (es256)
  • ES384 (es384)
  • ES512 (es512)

Smoke test example

Compilation

   make
   make eunit

In Erlang shell:

    %% Create JWT token
    application:start(crypto).
    Key = <<"53F61451CAD6231FDCF6859C6D5B88C1EBD5DC38B9F7EBD990FADD4EB8EB9063">>.
    Claims = {[
        {user_id, <<"bob123">>},
        {user_name, <<"Bob">>}
    ]}.
    ExpirationSeconds = 86400,
    Token = erljwt:create(hs256, Claims, ExpirationSeconds, Key).

    %% validate JWT token
    erljwt:validate(Token, [hs256], #{}, Key).

You get back the original claims ,plus expiration claim and the header and signature:

{ok,
    #{ claims =>
        #{<<"exp">> => 1392607527,
          <<"user_id">> => <<"bob123">>,
          <<"user_name">> => <<"Bob">>
         },
       header => #{...},
       signature => <<"lnmmaen....">>
    }
}

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  • Erlang 99.2%
  • Makefile 0.8%