constant-time-testing

Detect timing side-channel vulnerabilities in cryptographic implementations.

47|5|Updated Apr 25, 2026

Search Tags:#security #vulnerability #cryptography #statistical analysis #dynamic analysis #timing attack #side-channel

Ready to run

npx skills add https://github.com/RedHatProductSecurity/prodsec-skills --skill constant-time-testing-redhatproductsecurity

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: constant-time-testing
Source: https://github.com/RedHatProductSecurity/prodsec-skills/tree/main/module/skills/constant-time-testing
Command: npx skills add https://github.com/RedHatProductSecurity/prodsec-skills --skill constant-time-testing-redhatproductsecurity

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires dudect, timecop, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill identifies timing side-channel vulnerabilities in cryptographic code, helping developers prevent secret data leaks through timing analysis.

Core Features & Use Cases

Timing attack detection: Utilize statistical and dynamic tools to analyze execution time variability.
Vulnerability pinpointing: Trace and identify exact code locations leaking secret-dependent timing behavior.
Use Case: When auditing a new cryptographic implementation, run this Skill to detect potential timing leaks in key routines such as modular exponentiation.

Quick Start

Use the constant-time testing skill to analyze your cryptographic functions for timing side-channel leaks with minimal setup.

Frequently Asked Questions about constant-time-testing

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I detect timing side-channel vulnerabilities in cryptographic code?▼

To detect timing side-channel vulnerabilities, this Skill applies statistical and dynamic analysis to your cryptographic implementation, identifying execution time variability that leaks secret data. It pinpoints exact code locations causing timing leaks in key routines.

What is a timing attack and how does it compromise cryptographic security?▼

A timing attack compromises cryptographic security by measuring execution time variability to extract secret data. This Skill identifies these timing side-channel vulnerabilities, tracing secret-dependent execution behavior to prevent data leakage in key routines like modular exponentiation.

Can I use dudect and timecop to test my cryptographic implementation for timing leaks?▼

Yes, you can use this Skill to test your cryptographic implementation because it leverages dudect and timecop as dependencies. These tools enable the statistical and dynamic analysis required to reliably detect timing leaks with minimal setup.

What's the best way to audit cryptographic functions for secret data leakage through timing analysis?▼

The best way to audit for secret data leakage is running this Skill to detect potential timing leaks in cryptographic functions. It traces and identifies exact code locations exhibiting secret-dependent timing behavior using dynamic analysis tools.

Do I need to provide specific cryptographic routines to test for execution time variability?▼

Yes, you need to provide your specific cryptographic routines for analysis. The Skill analyzes these functions, such as modular exponentiation, to detect execution time variability and pinpoint exact code locations leaking secret-dependent timing behavior.