lasso ☆

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Description:
Library for Liberty Alliance and SAML protocols

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Security

Tags: saml security authentication federation identity

Install: brew install lasso

About:
Lasso is an open-source C library that provides a high-level API for the Liberty Alliance and SAML protocols. It simplifies the complex task of implementing federated identity and single sign-on (SSO) by handling XML signature processing and protocol state management. Its main value is enabling developers to integrate secure, standards-compliant authentication into applications without deep expertise in underlying XML specifications.

Key Features:

Support for SAML 1.1 and 2.0 specifications
Handles Liberty Alliance ID-FF 1.1 and 1.2
High-level API for managing protocol states
Automatic XML signature generation and verification
Bindings for multiple programming languages (C, Python, Java)

Use Cases:

Integrating SSO capabilities into custom web applications
Building identity providers (IdP) or service providers (SP)
Creating secure federation gateways

Alternatives:

SimpleSAMLphp – Lasso is a C library suitable for embedding in various languages, while SimpleSAMLphp is a PHP-based solution specifically for web environments.
OpenSAML – OpenSAML is a lower-level C++ library that offers more granular control, whereas Lasso provides a higher-level, easier-to-use API for common SAML tasks.

Version History

Detected	Rev	Change	Commit
Jun 23, 2026 1:46am	4	REVISION_ONLY	8689c387
Apr 22, 2026 1:34pm	3	REVISION_ONLY	ff0dd2e0
Apr 3, 2026 10:12am	2	REVISION_ONLY	4b241128
Sep 15, 2025 3:01pm	0	VERSION_BUMP	e8424912
Nov 24, 2024 10:15am	2	VERSION_BUMP	5c8329ec
Oct 22, 2024 12:14am	2	VERSION_BUMP	4b42347e
Sep 14, 2024 1:09pm	2	VERSION_BUMP	cc39586a
Jan 28, 2024 3:39pm	2	VERSION_BUMP	2adf8a0d
Mar 25, 2023 6:04pm	0	VERSION_BUMP	2df0da8a
Nov 27, 2022 3:07am	0	VERSION_BUMP	567099f6