JWT

A Simple D implementation of JSON Web Tokens. It's forked from https://github.com/zolamk/jwt.

Supported Algorithms

• none
• HS256
• HS384
• HS512

This library uses semantic versioning 2.0.0

What's New

• added support for arrays and objects in claims
• removed verify function that doesn't take algorithm type, see why here
• changed verify function to take an array of algorithms to support multiple algorithms
• renamed InvalidSignature to InvalidSignatureException

How To Use

Encoding

import jwt.jwt;
import jwt.algorithms;
import std.json;

void main() {

    JSONValue user = ["id": JSONValue(60119), "uri": JSONValue("https://api.we.are/60119")];

    Token token = new Token(JWTAlgorithm.HS512);

    token.claims.exp = Clock.currTime.toUnixTime();

    token.claims.set("user", user);

    token.claims.set("data", [JSONValue("zm"), JSONValue(58718)]);

    string encodedToken = token.encode("supersecret");

    // work with the encoded token

}

Verifying

import jwt.jwt;
import jwt.exceptions;
import jwt.algorithms;

void main() {

    // get encoded token from header or ...

    try {

        Token token = verify(encodedToken, "supersecret", [JWTAlgorithm.HS512, JWTAlgorithm.HS256]);

        writeln(token.claims.getInt("id"));

        JSONValue user = token.claims.getObject("user");

        JSONValue[] a = token.claims.getArray("data");

        long userID = user["id"].integer();

        string uri = user["uri"].str();

        writeln(userID);

        writeln(uri);

        writeln(a[0].str());

        writeln(a[1].integer());

    } catch (InvalidAlgorithmException e) {

        writeln("token has an invalid algorithm");

    } catch (InvalidSignatureException e) {

        writeln("This token has been tampered with");

    } catch (NotBeforeException e) {

        writeln("Token is not valid yet");

    } catch (ExpiredException e) {

        writeln("Token has expired");

    }

}

Encoding without signature

import jwt.jwt;
import jwt.algorithms;

void main() {

    Token token = new Token(JWTAlgorithm.NONE);

    token.claims.exp = Clock.currTime.toUnixTime();

    token.claims.set("id", 60119);

    string encodedToken = token.encode();

    // work with the encoded token

}

Verifying without signature

import jwt.jwt;
import jwt.exceptions;
import jwt.algorithms;

void main() {

    // get encoded token from header or ...

    try {

        Token token = verify(encodedToken);

        writeln(token.claims.getInt("id"));

    } catch (NotBeforeException e) {

        writeln("Token is not valid yet");

    } catch (ExpiredException e) {

        writeln("Token has expired");

    }

}

Limitations

• Since Phobos doesn't(hopefully yet) support RSA algorithms this library only provides HMAC signing.

Note

this library uses code and ideas from jwtd and jwt-go