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mukul975
64 lines
2.6 KiB
Markdown
64 lines
2.6 KiB
Markdown
---
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name: performing-ssl-certificate-lifecycle-management
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description: 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
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domain: cybersecurity
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subdomain: cryptography
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tags: [cryptography, ssl, certificates, pki, tls, key-management]
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version: "1.0"
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author: mahipal
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license: MIT
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---
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# Performing SSL Certificate Lifecycle Management
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## Overview
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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.
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## Objectives
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- Generate Certificate Signing Requests (CSRs) programmatically
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- Parse and validate X.509 certificates
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- Monitor certificate expiration across infrastructure
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- Automate renewal using ACME protocol (Let's Encrypt)
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- Implement certificate revocation checking (CRL and OCSP)
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- Track certificate inventory across multiple domains
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## Key Concepts
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### Certificate Lifecycle Stages
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1. **Request**: Generate key pair and CSR
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2. **Issuance**: CA validates and issues certificate
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3. **Deployment**: Install certificate on servers
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4. **Monitoring**: Track expiration and health
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5. **Renewal**: Request new certificate before expiry
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6. **Revocation**: Invalidate compromised certificates
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### Certificate Types
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| Type | Validation | Use Case |
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|------|-----------|----------|
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| DV (Domain Validation) | Domain ownership | Websites, APIs |
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| OV (Organization Validation) | Domain + org identity | Business sites |
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| EV (Extended Validation) | Full legal verification | E-commerce, banking |
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| Wildcard | *.domain.com | Multi-subdomain |
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| SAN/UCC | Multiple domains | Multi-domain hosting |
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## Security Considerations
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- Set up automated monitoring for all certificates
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- Use ECDSA (P-256) certificates for better performance over RSA
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- Enable OCSP stapling on all servers
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- Implement Certificate Transparency log monitoring
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- Maintain inventory of all certificates and their locations
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- Plan for CA compromise scenarios (key pinning, backup CAs)
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## Validation Criteria
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- [ ] CSR generation produces valid PKCS#10 request
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- [ ] Certificate parsing extracts all relevant fields
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- [ ] Expiration monitoring detects certificates within threshold
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- [ ] Certificate chain validation verifies trust path
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- [ ] OCSP checking detects revoked certificates
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- [ ] Certificate inventory tracks all deployed certificates
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