ykclient ☆

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Description:
Library to validate YubiKey OTPs against YubiCloud

Type: Formula | Tracked Since: Nov 13, 2024

Links: Homepage | @Yubico | formulae.brew.sh

Category: Security

Tags: authentication 2fa security yubikey otp library

Install: brew install ykclient

About:
ykclient is a C library that provides a client-side interface for validating YubiKey One-Time Passwords (OTPs) against YubiCloud's validation servers. It handles the network communication and cryptographic verification, simplifying the integration of YubiKey two-factor authentication into applications. Its main value is offering a reliable, officially supported method to offload OTP validation to YubiCo's infrastructure.

Key Features:

Validates YubiKey OTPs against YubiCloud
Handles HTTPS communication with validation servers
Provides detailed response parsing (status, identity, timestamp)
Supports synchronization and timestamp verification
Lightweight C library for easy integration

Use Cases:

Adding YubiKey 2FA to custom applications and services
Building on-premise authentication systems that leverage YubiCloud
Verifying OTPs in scripts or system utilities for secure access

Alternatives:

python-yubico-client – Official Python library for the same YubiCloud API, for Python-based projects.
yubikey-manager (ykman) – A command-line tool for YubiKey management, but does not perform cloud OTP validation.

Version History

Detected	Version	Rev	Change	Commit
Nov 13, 2024 9:07am		1	VERSION_BUMP	7a71d25d
Feb 16, 2023 4:59pm		1	VERSION_BUMP	33541ba3