ClaudSkills / Security / network-security

Openssl Selfsigned Cert

Q: What is a Claude Code skill and how does the Openssl Selfsigned Cert skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Openssl Selfsigned Cert is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Security · Sub-category: network-security · Last updated: 2026-08-18

Guides the creation of self-signed SSL/TLS certificates using OpenSSL, including key generation, certificate creation, combined PEM files, and verification scripts. This skill should be used when tasks involve generating self-signed certificates, creating SSL certificate infrastructure, or writing certificate verification scripts.

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

This skill provides guidance for creating self-signed SSL/TLS certificates using OpenSSL command-line tools, including proper verification and scripting approaches.

What this skill does

Openssl Selfsigned Cert is a community-contributed Claude Code skill in the network-security sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/openssl-selfsigned-cert/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Openssl Selfsigned Cert Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 187,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/openssl-selfsigned-cert
curl -L https://claudskills.com/skills/openssl-selfsigned-cert/SKILL.md \
  -o ~/.claude/skills/openssl-selfsigned-cert/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/openssl-selfsigned-cert/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/openssl-selfsigned-cert/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\openssl-selfsigned-cert\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Openssl Selfsigned Cert Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/openssl-selfsigned-cert/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Openssl Selfsigned Cert skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Openssl Selfsigned Cert skill?

Use Openssl Selfsigned Cert when your Claude Code task falls under the Security category — specifically in the network security area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Openssl Selfsigned Cert" or describe the task and let Claude pick). Browse related skills at /category/security/.

What is a Claude Code skill and how does the Openssl Selfsigned Cert skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Openssl Selfsigned Cert is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

oaustegard. (2026). Openssl Selfsigned Cert [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/openssl-selfsigned-cert/

BibTeX

@misc{openssl-selfsigned-cert-2026,
  author    = {oaustegard},
  title     = {Openssl Selfsigned Cert [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/openssl-selfsigned-cert/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/openssl-selfsigned-cert.svg)](https://claudskills.com/skills/openssl-selfsigned-cert/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-08-18 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/openssl-selfsigned-cert/#security)

More Security skills

Browse all Security skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Security skills → Top 100 skills

Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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