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performing-ssl-certificate-lifecycle-management

performing-ssl-certificate-lifecycle-management

github.com/mukul975Security35.2k90 installsUpdated 8w ago
Repository

About performing-ssl-certificate-lifecycle-management

A skill for security and operations teams managing SSL/TLS certificates. It covers lifecycle tasks from CSR generation and certificate validation to ACME renewal and revocation checks.

Key features

  1. 01Generate certificate signing requests
  2. 02Parse and validate X.509 certificates
  3. 03Monitor certificate expiration
  4. 04Automate renewal with ACME
  5. 05Check revocation through CRL and OCSP
  6. 06Track certificates across domains

Use cases

  1. 01Audit certificates across infrastructure
  2. 02Find certificates nearing expiration
  3. 03Validate certificate chains and revocation

Install

Copy the command and run it in a terminal.

$npx skills add https://github.com/mukul975/anthropic-cybersecurity-skills --skill performing-ssl-certificate-lifecycle-management

After installing, type/performing-ssl-certificate-lifecycle-managementin Claude Code to confirm it loaded.

Bundled files

References and scripts installed along with SKILL.md.

LICENSE
assets/
template.md
references/
api-reference.md
standards.md
workflows.md
scripts/
agent.py
process.py

Details

From the project README

Performing SSL Certificate Lifecycle Management

Overview

SSL/TLS certificate lifecycle management encompasses the full process of requesting, issuing, deploying, monitoring, renewing, and revoking X.509 certificates. Poor certificate management is a leading cause of outages and security incidents. This skill covers automating the entire certificate lifecycle using Python and ACME protocol tools.

When to Use

  • When conducting security assessments that involve performing ssl certificate lifecycle management
  • When following incident response procedures for related security events
  • When performing scheduled security testing or auditing activities
  • When validating security controls through hands-on testing

Prerequisites

  • Familiarity with cryptography concepts and tools
  • Access to a test or lab environment for safe execution
  • Python 3.8+ with required dependencies installed
  • Appropriate authorization for any testing activities

Objectives

  • Generate Certificate Signing Requests (CSRs) programmatically
  • Parse and validate X.509 certificates
  • Monitor certificate expiration across infrastructure
  • Automate renewal using ACME protocol (Let's Encrypt)
  • Implement certificate revocation checking (CRL and OCSP)
  • Track certificate inventory across multiple domains

Key Concepts

Certificate Lifecycle Stages
  1. Request: Generate key pair and CSR
  2. Issuance: CA validates and issues certificate
  3. Deployment: Install certificate on servers
  4. Monitoring: Track expiration and health
  5. Renewal: Request new certificate before expiry
  6. Revocation: Invalidate compromised certificates
Certificate Types
TypeValidationUse Case
DV (Domain Validation)Domain ownershipWebsites, APIs
OV (Organization Validation)Domain + org identityBusiness sites
EV (Extended Validation)Full legal verificationE-commerce, banking
Wildcard*.domain.comMulti-subdomain
SAN/UCCMultiple domainsMulti-domain hosting

Security Considerations

  • Set up automated monitoring for all certificates
  • Use ECDSA (P-256) certificates for better performance over RSA
  • Enable OCSP stapling on all servers
  • Implement Certificate Transparency log monitoring
  • Maintain inventory of all certificates and their locations
  • Plan for CA compromise scenarios (key pinning, backup CAs)

Validation Criteria

  • CSR generation produces valid PKCS#10 request
  • Certificate parsing extracts all relevant fields
  • Expiration monitoring detects certificates within threshold
  • Certificate chain validation verifies trust path
  • OCSP checking detects revoked certificates
  • Certificate inventory tracks all deployed certificates

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