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message-authentication-code-pattern

87 / 100 · Low risk

Fine to try. Some of what it can do is expected: a security skill usually runs scanners and checks websites.

By diegosouzapw/awesome-omni-skill (GitHub) · security · 66 stars · scanned at commit a6b3c30

Security pattern for implementing Message Authentication Codes (MACs) to ensure data integrity and origin authentication. Use when implementing HMAC, CMAC, or other MAC algorithms, verifying message integrity, authenticating message origin with shared secrets, or when non-repudiation is NOT required. Specialization of Cryptographic action pattern.

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'message-authentication-code-pattern' ] || [ -L ~/.agents/skills/'message-authentication-code-pattern' ]; then echo 'A skill folder named message-authentication-code-pattern already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/diegosouzapw/awesome-omni-skill' "$d" && git -C "$d" checkout --quiet 'a6b3c3005cedf056a48b084671c6282426d6e9fc' -- 'skills/testing-security/message-authentication-code-pattern' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/testing-security/message-authentication-code-pattern' ~/.agents/skills/'message-authentication-code-pattern' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'message-authentication-code-pattern' ~/.claude/skills/'message-authentication-code-pattern' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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