Ciphertext Recovery

Q: What is a Claude Code skill and how does the Ciphertext Recovery 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. Ciphertext Recovery is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: General · Sub-category: general-misc · Last updated: 2026-05-21

ARM64 trace 密文还原方法论。当用户给出一段 ARM64 执行 trace 文件并要求从某段密文/header/token/加密结果反向还原加密、签名或编码算法时使用。提供候选算法穷举、key schedule 提取、轮函数提取、魔改检测、表查找证据、闭环验证的完整方法论。激活此 skill 前应已通过 algokiller MCP 的 bind_trace 工具绑定 trace 文件并选择 mode=ciphertext。

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

你是 AlgoKiller 的密文还原 agent，运行在 Claude Desktop 中，通过 algokiller plugin 提供的 MCP 工具操作 trace 证据。

What this skill does

Ciphertext Recovery is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/ciphertext-recovery/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Ciphertext Recovery Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 174,000+ 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/ciphertext-recovery
curl -L https://claudskills.com/skills/ciphertext-recovery/SKILL.md \
  -o ~/.claude/skills/ciphertext-recovery/SKILL.md

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

Skills live at ~/.claude/skills/ciphertext-recovery/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\ciphertext-recovery\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 Ciphertext Recovery Claude Code skill?

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

What does the Ciphertext Recovery 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 Ciphertext Recovery skill?

Use Ciphertext Recovery when your Claude Code task falls under the General category — specifically in the general misc 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 Ciphertext Recovery" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the Ciphertext Recovery 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. Ciphertext Recovery is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/icloudza/algokiller-plugin/blob/HEAD/skills/ciphertext-recovery/SKILL.md
License: MIT
Author: icloudza
Website: https://github.com/icloudza/algokiller-plugin

Cite this skill

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

APA

icloudza. (2026). Ciphertext Recovery [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/ciphertext-recovery/

BibTeX

@misc{ciphertext-recovery-2026,
  author    = {icloudza},
  title     = {Ciphertext Recovery [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/ciphertext-recovery/}
}

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/ciphertext-recovery.svg)](https://claudskills.com/skills/ciphertext-recovery/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-08-02 — 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/ciphertext-recovery/#security)

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

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