Adcs Attacks
ADScanPro/Claude-AD
Active Directory Certificate Services (AD CS) escalation techniques ESC1 through ESC17, driven by hand with Certipy (ly4k).
Cryptanalysis techniques — lattice attacks, padding oracles, weak-RNG exploitation, signature forgery, secret-sharing recovery.
Install Cryptography
$ npx skills add transilienceai/communitytools --skill cryptography -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install transilienceai/communitytools cryptography --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/transilienceai/communitytools.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/cryptography .claude/skills/cryptography && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "cryptography" agent skill from https://github.com/transilienceai/communitytools/tree/main/skills/cryptography into .claude/skills/cryptography/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cryptography", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/transilienceai/communitytools/tree/main/skills/cryptographyType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add transilienceai/communitytools --skill cryptography -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install transilienceai/communitytools cryptography --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/transilienceai/communitytools.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/cryptography .agents/skills/cryptography && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "cryptography" agent skill from https://github.com/transilienceai/communitytools/tree/main/skills/cryptography into .agents/skills/cryptography/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cryptography", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add transilienceai/communitytools --skill cryptography -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install transilienceai/communitytools cryptography --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/transilienceai/communitytools.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/cryptography .cursor/skills/cryptography && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "cryptography" agent skill from https://github.com/transilienceai/communitytools/tree/main/skills/cryptography into .cursor/skills/cryptography/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cryptography", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/transilienceai/communitytools.git --path skills/cryptography--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add transilienceai/communitytools --skill cryptography -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install transilienceai/communitytools cryptography --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/transilienceai/communitytools.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/cryptography .gemini/skills/cryptography && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "cryptography" agent skill from https://github.com/transilienceai/communitytools/tree/main/skills/cryptography into .gemini/skills/cryptography/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cryptography", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install transilienceai/communitytools cryptographyInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add transilienceai/communitytools --skill cryptography -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/transilienceai/communitytools.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/cryptography .github/skills/cryptography && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "cryptography" agent skill from https://github.com/transilienceai/communitytools/tree/main/skills/cryptography into .github/skills/cryptography/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cryptography", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add transilienceai/communitytools --skill cryptography -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install transilienceai/communitytools cryptography --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/transilienceai/communitytools.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/cryptography .opencode/skills/cryptography && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "cryptography" agent skill from https://github.com/transilienceai/communitytools/tree/main/skills/cryptography into .opencode/skills/cryptography/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cryptography", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
cryptography- GitHub stars
- 562
- Token cost
- ~465 tokens
- SKILL.md length
- 188 words
- Files
- 29
- Skills in repo
- 35
- Repo updated
- First seen
- Licence
- MIT
At a glance
Cryptanalysis techniques — lattice attacks, padding oracles, weak-RNG exploitation, signature forgery, secret-sharing recovery.
- Tasks that involve Cryptography
- SKILL.md covers Scope, When to use and References
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Tasks that involve Penetration testing
What it does
Cryptography is an agent skill from transilienceai/communitytools. Cryptanalysis techniques — lattice attacks, padding oracles, weak-RNG exploitation, signature forgery, secret-sharing recovery.
Its SKILL.md is about 470 tokens, which your agent loads only when the skill is triggered. The skill folder holds 34 other files (for example `reference/INDEX.md`, `reference/cryptography-principles.md` and `reference/lattice-attacks.md`).
It sits in Security, covering Cryptography and Penetration testing. The repository describes itself as: Open-source Claude Code skills, agents, and slash commands for AI-powered penetration testing, bug bounty hunting, and security research. The licence is MIT.
When your agent uses it
- Tasks that involve Cryptography
- Tasks that involve Penetration testing
Example prompts
- “/cryptography”
Requirements
- Python 3
What it can do on your machine
Read from SKILL.md and the folder at commit 95fdc12. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Cryptography loads about 465 tokens when it runs. Until then it costs about 35 tokens; SKILL.md has 188 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from transilienceai/communitytools at commit 95fdc12, republished under its MIT licence (© transilienceai). 188 words, ~465 tokens.
Download SKILL.mdSave it as
.claude/skills/cryptography/SKILL.md (or your agent's skills folder). This skill also uses 28 other files; get the full folder from GitHub.- name
- cryptography
- description
- Cryptanalysis techniques — lattice attacks, padding oracles, weak-RNG exploitation, signature forgery, secret-sharing recovery.
Cryptography
Scope
Practical cryptanalysis for CTF and pentest engagements: identifying when a cryptographic primitive's structure (custom hash, partial leaks, related primes, bad RNG, weak modes) admits a faster-than-brute-force solver, then implementing that solver in pure Python where possible. Covers RSA-style algebraic factoring, lattice/AGCD recovery, GF(2) linear collapse of "complicated-looking" custom ciphers, smooth-order DLP, differential fault attacks, and Shamir-style secret-sharing recovery over non-prime moduli. Always read source first to detect linearity/algebraic structure before reaching for SageMath or symbolic solvers.
When to use
- A challenge or target ships custom crypto (custom hash, custom block cipher, hand-rolled key derivation) and you need to look for affine / GF(2)-linear collapse.
- RSA-style primitives with structured primes (
p = a·r + b,phi(n)perfect square, multi-prime hint files, common factors). - A service exposes a chosen-ciphertext / chosen-input oracle and you suspect padding-oracle, smooth-order DLP, or Bleichenbacher-style recovery.
- AES with fault injection (correct + faulty ciphertext for the same key — Piret-Quisquater DFA).
- Shamir secret sharing or threshold schemes with non-prime moduli (2-adic recovery via Lagrange interpolation with valuation tracking).
References
- reference/lattice-attacks.md — AGCD lattice, discriminant-square factoring, smooth-order DLP, Piret-Quisquater DFA.
- reference/linear-secret-recovery.md — GF(2) affine collapse of custom hashes/ciphers via column-by-column linear recovery.
© transilienceai, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 28 other files in skills/cryptography of transilienceai/communitytools.
- SKILL.md
- reference/INDEX.md
- reference/cryptography-principles.md
- reference/lattice-attacks.md
- reference/linear-secret-recovery.md
- reference/scenarios/classical/repeating-key-xor.md
- reference/scenarios/lattice/agcd-attack.md
- reference/scenarios/lattice/boneh-durfee-low-d.md
- reference/scenarios/lattice/coppersmith-known-bits.md
- reference/scenarios/lattice/lll-basis-reduction.md
- reference/scenarios/padding-oracle/cbc-padding-oracle.md
- reference/scenarios/padding-oracle/ecb-prefix-oracle.md
- reference/scenarios/padding-oracle/pkcs1-v1.5-bleichenbacher.md
- reference/scenarios/rsa-quirks/common-modulus.md
- reference/scenarios/rsa-quirks/fermat-close-primes.md
- … and 14 more
Open the folder on GitHubat commit 95fdc12
Compare with similar skills
Cryptography next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Cryptography this skilltransilienceai/communitytools | 562 | — | ~465 | Automated safety check: Pass | MIT | |
| Adcs AttacksADScanPro/Claude-AD | 210 | — | ~3.6k | Automated safety check: Pass | MIT | |
| Hashcat Password Recovery WorkflowAgentSecOps/SecOpsAgentKit | 220 | 1 repos | ~3.3k | Automated safety check: Notes | Custom licence | |
| Senior Securitydavila7/claude-code-templates | 32k | 2 repos | ~1.1k | Automated safety check: Notes | MIT | |
| Strix Code Vulnerability Scanusestrix/strix | 67k | — | ~1.1k | Automated safety check: Pass | Apache-2.0 | |
| Code Audit3stoneBrother/code-audit | 893 | 1 repos | ~2.7k | Automated safety check: Pass | None |
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Related
Categories
Questions about Cryptography
What does Cryptography do?
Cryptanalysis techniques — lattice attacks, padding oracles, weak-RNG exploitation, signature forgery, secret-sharing recovery. Cryptography is an agent skill from transilienceai/communitytools. Cryptanalysis techniques — lattice attacks, padding oracles, weak-RNG exploitation, signature forgery, secret-sharing recovery.
When should I use Cryptography?
Cryptography fits situations like: tasks that involve Cryptography; tasks that involve Penetration testing.
How do I install Cryptography in Claude Code?
Run `npx skills add transilienceai/communitytools --skill cryptography -a claude-code`. Or copy the skill folder (skills/cryptography in transilienceai/communitytools) into .claude/skills/cryptography in your project. Claude Code loads it when a task matches its description.
How do I install Cryptography in Codex?
Run `npx skills add transilienceai/communitytools --skill cryptography -a codex`. Or copy the skill folder (skills/cryptography in transilienceai/communitytools) into .agents/skills/cryptography in your project. Codex loads it when a task matches its description.
Can I use Cryptography in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add transilienceai/communitytools --skill cryptography -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/cryptography, .gemini/skills/cryptography, .github/skills/cryptography and .opencode/skills/cryptography in your project.
What does Cryptography need to run?
SKILL.md names no scripts, command-line tools or credentials: Cryptography is instructions for the agent only. Our summary lists: Python 3.
Does Cryptography access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Cryptography safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Cryptography use?
Cryptography is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Cryptography use?
About 465 tokens (SKILL.md is roughly 1.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Cryptography?
Skills that share tags, products or a category with Cryptography: Adcs Attacks (ADScanPro/Claude-AD, 210 stars), Hashcat Password Recovery Workflow (AgentSecOps/SecOpsAgentKit, 220 stars), Senior Security (davila7/claude-code-templates, 32k stars) and Strix Code Vulnerability Scan (usestrix/strix, 67k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Cryptography?
transilienceai (a GitHub organization) maintains it in transilienceai/communitytools, which has 562 GitHub stars. The repository holds 35 skills in this directory. The repository was last updated on July 29, 2026.
Source: transilienceai/communitytools on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.