constant-time-analysis

Detect timing side-channel vulnerabilities in cryptographic code across languages and architectures.

Updated Jun 9, 2026
One-click install
npx skills add https://github.com/iiammae/opero --skill constant-time-analysis-iiammae
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: constant-time-analysis
Source: https://github.com/iiammae/opero/tree/main/.agents/skills/constant-time-analysis
Command: npx skills add https://github.com/iiammae/opero --skill constant-time-analysis-iiammae

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires ct_analyzer, and includes scripts (resource) and references (resource) and assets (resource) components.

What problem does it solve?

This Skill identifies timing side-channel vulnerabilities in cryptographic code, crucial for maintaining security in sensitive data handling.

Core Features & Use Cases

  • Timing Vulnerability Detection: Identifies variable-time instructions that leak secrets through execution timing.
  • Multi-Architecture Support: Tests compiled output for x86_64, ARM64, RISC-V, and other architectures.
  • Scripting Language Support: Analyzes bytecode for PHP, JavaScript/TypeScript, Python, and Ruby.
  • Fix Guidance: Provides patterns for constant-time arithmetic and comparisons.
  • CI Integration: Generates JSON output for automated pipelines.

Quick Start

Run the 'constant-time-analysis' skill to check for timing vulnerabilities in your cryptographic code.

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 code?

Detect timing side-channel vulnerabilities by analyzing compiled assembly or bytecode for variable-time instructions that leak secrets. This process evaluates execution timing across architectures and provides recommendations for constant-time fixes.

Does constant-time analysis support scripting languages like Python and JavaScript?

Yes, constant-time analysis supports scripting languages by analyzing bytecode for PHP, JavaScript, TypeScript, Python, and Ruby, alongside compiled output for architectures like x86_64, ARM64, and RISC-V.

What is the best way to check cryptographic code for timing attacks in a CI pipeline?

Check cryptographic code for timing attacks in a CI pipeline by running automated analysis that generates JSON output. This identifies variable-time instructions and provides constant-time fix patterns for your automated workflows.

Why does cryptographic code need constant-time analysis?

Cryptographic code needs constant-time analysis because variable-time instructions can leak sensitive data through execution timing. Identifying these timing side-channel vulnerabilities is crucial for maintaining security in sensitive data handling.

How do I fix variable-time instructions found during side-channel analysis?

Fix variable-time instructions found during side-channel analysis by applying provided patterns for constant-time arithmetic and comparisons. These recommendations ensure execution timing does not leak secrets.

Can I use ct_analyzer to test compiled output for ARM64 and RISC-V architectures?

Yes, you can use ct_analyzer to test compiled output for ARM64, RISC-V, x86_64, and other architectures. It assesses the assembly code for potential timing leaks across these supported platforms.