Warning

The current LibJWT code is under heavy reconstruction and is changing wildly from the API and ABI of v2 and prior. There's still a lot going on here, and there are no guarantees that this new API is set in stone. Users beware.

💡 Supported Standards

Standard	RFC	Description
JWS	📄 RFC-7515	JSON Web Signature
JWE	📄 RFC-7516	JSON Web Encryption
JWK	📄 RFC-7517	JSON Web Keys and Sets
JWA	📄 RFC-7518	JSON Web Algorithms
JWT	📄 RFC-7519	JSON Web Token

Note

Throughout this documentation you will see links such as the ones above to RFC documents. These are relevant to that particular part of the library and are helpful to understand some of the specific standards that shaped the development of LibJWT.

🚧 Build Prerequisites

Required

• JANSSON (>= 2.0)
• CMake (>= 3.7)

Crypto support

• OpenSSL (>= 3.0.0)
• GnuTLS (>= 3.6.0)
• MbedTLS (>= 3.6.0)

Note

OpenSSL is required and used for JWK(S) operations.

Algorithm support matrix

JWS Algorithm alg	OpenSSL	GnuTLS	MbedTLS
HS256 HS384 HS512	✅	✅	✅
ES256 ES384 ES512	✅	✅	✅
RS256 RS384 RS512	✅	✅	✅
EdDSA using ED25519	✅	✅	❌
EdDSA using ED448	✅	✅ >= 3.8.8	❌
PS256 PS384 PS512	✅	✅	✅*
ES256K	✅	❌	✅

* RSASSA-PSS support in MbedTLS depends on Mbed-TLS/TF-PSA-Crypto#154

Optional

• Check Library (>= 0.9.10) for unit testing
• Doxygen (>= 1.13.0) for documentation

📚 Docs and Source

🔗 Current codebase

🔗 Stable

🔗 GitHub Repo

📦 Pre-built Packages

LibJWT is available in most Linux distributions as well as through Homebrew for Linux, macOS, and Windows.

🔨 Build Instructions

With CMake:

$ mkdir build
$ cd build
$ cmake ..
$ make