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JWT Integration For Yii 2

This extension provides the JWT integration for Yii 2 framework.

This is a fork of sizeg/yii2-jwt package

See lcobucci/jwt repo for details about the version.

Installation

Add the package to your composer.json:

and run composer update or alternatively run composer require algsupport/jwt

Basic usage

Add jwt component to your configuration file.

If your application is both the issuer and the consumer of JWT (the common case, a.k.a. Standard version) use algsupport\jwt\Jwt component:

If your application just needs some special JWT tools (like validator or parser, a.k.a. Toolset version) use algsupport\jwt\JwtTools component:

Of course, if you are already using the Standard version component, you don't need to define the Toolset version component, since the former already provides all the tools.

If you are struggling with the concept of API JWT, here is an EXAMPLE of how to quickly put all pieces together.

Available signers

Symmetric:

• HMAC (HS256, HS384, HS512)

Asymmetric:

• RSA (RS256, RS384, RS512)
• ECDSA (ES256, ES384, ES512)
• EdDSA (since 3.1.0)
• BLAKE2B (since 3.4.0)

Signer IDs are available as constants (like Jwt::HS256).

You can also provide your own signer, either as an instance of Lcobucci\JWT\Signer or by adding its config to signers and algorithmTypes and using its ID for signer.

As stated in lcobucci/jwt documentation: Although BLAKE2B is fantastic due to its performance, it's not JWT standard and won't necessarily be offered by other libraries.

Note on signers and minimum bits requirement

Since lcobucci/jwt 4.2.0 signers require the minimum key length to make sure those are properly secured, otherwise the InvalidKeyProvided is thrown.

Keys

For symmetric signers signingKey is required. For asymmetric ones you also need to set verifyingKey. Keys can be provided as simple strings, configuration arrays, or instances of Lcobucci\JWT\Signer\Key.

Configuration array can be as the following:

• key (algsupport\jwt\Jwt::KEY) - string, default '',
• passphrase (algsupport\jwt\Jwt::PASSPHRASE) - string, default '',
• method (algsupport\jwt\Jwt::METHOD) - string, default algsupport\jwt\Jwt::METHOD_PLAIN, available: algsupport\jwt\Jwt::METHOD_PLAIN, algsupport\jwt\Jwt::METHOD_BASE64, algsupport\jwt\Jwt::METHOD_FILE (see https://lcobucci-jwt.readthedocs.io/en/latest/configuration/)

Simple string keys are shortcuts to the following array configs:

• key starts with @ or file://:

  Detecting @ at the beginning assumes Yii alias has been provided, so it will be resolved with Yii::getAlias().

• key doesn't start with @ nor file://:

Issuing a token example:

Standard version:

The same in Toolset version:

See https://lcobucci-jwt.readthedocs.io/en/latest/issuing-tokens/ for more info.

Parsing a token

See https://lcobucci-jwt.readthedocs.io/en/latest/parsing-tokens/ for more info.

Validating a token

You can validate a token or perform an assertion on it (see https://lcobucci-jwt.readthedocs.io/en/latest/validating-tokens/).

For validation use:

For assertion use:

You MUST provide at least one constraint, otherwise Lcobucci\JWT\Validation\NoConstraintsGiven exception will be thrown. There are several ways to provide constraints:

• directly (Standard version only):

• through component configuration:

Note: By default, this package is not adding any constraints out-of-the-box, you must configure them yourself like in the examples above.

Using component for REST authentication

Configure the authenticator behavior in the controller.

There are special options available:

• jwt - string ID of component (default with 'jwt'), component configuration array, or an instance of algsupport\jwt\Jwt or algsupport\jwt\JwtTools,
• auth - callable or null (default) - anonymous function with signature function (\Lcobucci\JWT\Token $token) that should return identity of user authenticated with the JWT payload information. If $auth is not provided method yii\web\User::loginByAccessToken() will be called instead.
• throwException - bool (default true) - whether the filter should throw an exception i.e. if the token has an invalid format. If there are multiple auth filters (CompositeAuth) it can make sense to "silent fail" and pass the validation process to the next filter on the composite auth list.

For other configuration options refer to the Yii 2 Guide.

JWT Usage

Please refer to the lcobucci/jwt Documentation.

JSON Web Tokens

• https://jwt.io