constant-time-analysis

Analyze cryptographic source code for timing side-channel vulnerabilities.

47|5|Updated Apr 25, 2026

Search Tags:#security #analysis #cryptography #constant-time #timing attack #side-channel

Ready to run

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

💬 Prompt for ChatGPT / Claude Chat▼

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

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill identifies potential timing attacks and side-channel vulnerabilities in cryptographic code by analyzing execution timing characteristics.

Core Features & Use Cases

Security Assessment: Detects insecure operations like secret-dependent branches or divisions on secrets.
Code Review: Helps developers ensure cryptographic implementations are resistant to timing attacks.
Use Case: When reviewing crypto functions in C or Rust, use this Skill to identify timing leakages that could compromise secret keys.

Quick Start

Use the constant-time-analysis skill to analyze your source code file crypto.c for timing vulnerabilities.

Frequently Asked Questions about constant-time-analysis

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

FAQPage Schema

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

To detect timing side-channel vulnerabilities in cryptographic source code, you analyze execution timing characteristics to identify secret-dependent branches, operations, and leaks. This pinpoints insecure patterns that could compromise secret keys during execution.

Can I scan Rust and Go crypto implementations for timing attacks?▼

Yes, you can scan Rust and Go crypto implementations for timing attacks. The analysis applies to multiple languages including C, C++, Rust, and Go, identifying insecure timing patterns across different cryptographic codebases.

What is a timing side-channel attack and when do I need to check for it?▼

A timing side-channel attack exploits execution timing variations to extract secret keys from cryptographic operations. You need to check for it when reviewing crypto functions to ensure secret-dependent branches and divisions are resistant to timing leaks.

How do I review my C crypto functions for secret-dependent branches and leaks?▼

To review C crypto functions for secret-dependent branches and leaks, run a constant-time analysis on your source code file. This detects insecure operations like divisions on secrets, ensuring your implementation follows security best practices.

Does constant-time analysis require any specific dependencies or environments to run?▼

Constant-time analysis requires no external dependencies to run. It operates directly on your cryptographic source code files using built-in scripts and references, analyzing timing characteristics without needing specialized setup tools.