External Signer
Nethereum/Nethereum
Help users own an ERC-4337 smart account whose ECDSA key never lives in the application process — sign UserOperations with AWS KMS, Azure Key Vault, an HSM, a Ledger, or a Trezor instead of an…
Agent skill
Implementing Envelope Encryption With AWS Kms
Implements envelope encryption with AWS KMS, encrypting data locally with a data encryption key (DEK) and protecting that DEK with a KMS-managed key (KEK), covering the encrypt/decrypt flow, KMS key…
Install Implementing Envelope Encryption With AWS Kms
$ npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill implementing-envelope-encryption-with-aws-kms -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills implementing-envelope-encryption-with-aws-kms --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/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/implementing-envelope-encryption-with-aws-kms .claude/skills/implementing-envelope-encryption-with-aws-kms && 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 "implementing-envelope-encryption-with-aws-kms" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/implementing-envelope-encryption-with-aws-kms into .claude/skills/implementing-envelope-encryption-with-aws-kms/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "implementing-envelope-encryption-with-aws-kms", 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/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/implementing-envelope-encryption-with-aws-kmsType 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 mukul975/Anthropic-Cybersecurity-Skills --skill implementing-envelope-encryption-with-aws-kms -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills implementing-envelope-encryption-with-aws-kms --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/implementing-envelope-encryption-with-aws-kms .agents/skills/implementing-envelope-encryption-with-aws-kms && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "implementing-envelope-encryption-with-aws-kms" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/implementing-envelope-encryption-with-aws-kms into .agents/skills/implementing-envelope-encryption-with-aws-kms/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "implementing-envelope-encryption-with-aws-kms", 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 mukul975/Anthropic-Cybersecurity-Skills --skill implementing-envelope-encryption-with-aws-kms -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills implementing-envelope-encryption-with-aws-kms --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/implementing-envelope-encryption-with-aws-kms .cursor/skills/implementing-envelope-encryption-with-aws-kms && 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 "implementing-envelope-encryption-with-aws-kms" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/implementing-envelope-encryption-with-aws-kms into .cursor/skills/implementing-envelope-encryption-with-aws-kms/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "implementing-envelope-encryption-with-aws-kms", 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/mukul975/Anthropic-Cybersecurity-Skills.git --path skills/implementing-envelope-encryption-with-aws-kms--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 mukul975/Anthropic-Cybersecurity-Skills --skill implementing-envelope-encryption-with-aws-kms -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills implementing-envelope-encryption-with-aws-kms --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/implementing-envelope-encryption-with-aws-kms .gemini/skills/implementing-envelope-encryption-with-aws-kms && 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 "implementing-envelope-encryption-with-aws-kms" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/implementing-envelope-encryption-with-aws-kms into .gemini/skills/implementing-envelope-encryption-with-aws-kms/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "implementing-envelope-encryption-with-aws-kms", 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 mukul975/Anthropic-Cybersecurity-Skills implementing-envelope-encryption-with-aws-kmsInstalls 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 mukul975/Anthropic-Cybersecurity-Skills --skill implementing-envelope-encryption-with-aws-kms -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/implementing-envelope-encryption-with-aws-kms .github/skills/implementing-envelope-encryption-with-aws-kms && 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 "implementing-envelope-encryption-with-aws-kms" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/implementing-envelope-encryption-with-aws-kms into .github/skills/implementing-envelope-encryption-with-aws-kms/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "implementing-envelope-encryption-with-aws-kms", 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 mukul975/Anthropic-Cybersecurity-Skills --skill implementing-envelope-encryption-with-aws-kms -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills implementing-envelope-encryption-with-aws-kms --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/implementing-envelope-encryption-with-aws-kms .opencode/skills/implementing-envelope-encryption-with-aws-kms && 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 "implementing-envelope-encryption-with-aws-kms" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/implementing-envelope-encryption-with-aws-kms into .opencode/skills/implementing-envelope-encryption-with-aws-kms/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "implementing-envelope-encryption-with-aws-kms", 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
implementing-envelope-encryption-with-aws-kms- GitHub stars
- 34k
- Token cost
- ~954 tokens
- SKILL.md length
- 401 words
- Files
- 8 (incl. scripts, references, assets)
- Skills in repo
- 637
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Implements envelope encryption with AWS KMS, encrypting data locally with a data encryption key (DEK) and protecting that DEK with a KMS-managed key (KEK), covering the encrypt/decrypt flow, KMS key…
- Works in 5 steps: Call kms:GenerateDataKey to get… → Use plaintext DEK to encrypt data… → Store encrypted DEK alongside ciphertext → …
- Designing key management for encrypting large
- SKILL.md covers Overview, When to Use, Prerequisites and Objectives, plus 3 more sections
- Runs Python scripts from its folder
What it does
Implementing Envelope Encryption With AWS Kms is an agent skill from mukul975/Anthropic-Cybersecurity-Skills. Implements envelope encryption with AWS KMS, encrypting data locally with a data encryption key (DEK) and protecting that DEK with a KMS-managed key (KEK), covering the encrypt/decrypt flow, KMS key types, and security validation criteria. Use when designing key management for encrypting large or numerous data objects on AWS, or when reducing direct KMS API call volume.
Its SKILL.md is about 950 tokens, which your agent loads only when the skill is triggered. The skill folder holds 10 other files, including scripts, reference files and assets (for example `assets/template.md`, `references/api-reference.md` and `references/standards.md`).
It sits in Security, covering Cryptography. It works with Amazon Web Services. The repository describes itself as: 817 structured cybersecurity skills for AI agents · Mapped to 6 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND, NIST AI RMF & MITRE F3 (Fight Fraud) · agentskills.io…. The licence is Apache-2.0.
When your agent uses it
- Designing key management for encrypting large
- Numerous data objects on AWS
- Reducing direct KMS API call volume
Example prompts
- “Use the implementing-envelope-encryption-with-aws-kms skill to implement envelope encryption with AWS KMS, encrypting data locally with a data…”
- “/implementing-envelope-encryption-with-aws-kms”
Requirements
- Python 3
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Call kms:GenerateDataKey to get plaintext DEK + encrypted DEK
- Use plaintext DEK to encrypt data locally (AES-256-GCM)
- Store encrypted DEK alongside ciphertext
- Discard plaintext DEK from memory
- For decryption: call kms:Decrypt on encrypted DEK, then decrypt data
What it can do on your machine
Read from SKILL.md and the folder at commit 54a7988. 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
Ships 2 files in scripts/ (Python), which the agent can run.
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
Implementing Envelope Encryption With AWS Kms loads about 954 tokens when it runs, and up to ~2.3k if it reads all its reference files. Until then it costs about 105 tokens; SKILL.md has 401 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); the scripts in this folder are not scanned.
SKILL.md
The full file from mukul975/Anthropic-Cybersecurity-Skills at commit 54a7988, republished under its Apache-2.0 licence (© mukul975). 401 words, ~954 tokens.
Download SKILL.mdSave it as
.claude/skills/implementing-envelope-encryption-with-aws-kms/SKILL.md (or your agent's skills folder). This skill also uses 7 other files; get the full folder from GitHub.- name
- implementing-envelope-encryption-with-aws-kms
- description
- Implements envelope encryption with AWS KMS, encrypting data locally with a data encryption key (DEK) and protecting that DEK with a KMS-managed key (KEK), covering the encrypt/decrypt flow, KMS key types, and security validation criteria. Use when designing key management for encrypting large or numerous data objects on AWS, or when reducing direct KMS API call volume.
- domain
- cybersecurity
- subdomain
- cryptography
- tags
- cryptography, encryption, aws, kms, envelope-encryption, key-management
- version
- 1.0
- author
- mahipal
- license
- Apache-2.0
- nist_csf
- PR.DS-01, PR.DS-02, PR.DS-10
- mitre_attack
- T1600, T1573, T1553, T1078.004, T1530
Implementing Envelope Encryption with AWS KMS
Overview
Envelope encryption is a strategy where data is encrypted with a data encryption key (DEK), and the DEK itself is encrypted with a master key (KEK) managed by AWS KMS. This approach allows encrypting large volumes of data locally while keeping the master key secure in a hardware security module (HSM) managed by AWS. This skill covers implementing envelope encryption using AWS KMS GenerateDataKey API.
When to Use
- When deploying or configuring implementing envelope encryption with aws kms capabilities in your environment
- When establishing security controls aligned to compliance requirements
- When building or improving security architecture for this domain
- When conducting security assessments that require this implementation
Prerequisites
- Familiarity with cryptography concepts and tools
- Access to a test or lab environment for safe execution
- Python 3.8+ with required dependencies installed
- Appropriate authorization for any testing activities
Objectives
- Understand the envelope encryption pattern and its advantages
- Generate data encryption keys using AWS KMS GenerateDataKey
- Encrypt/decrypt data locally using DEKs
- Store encrypted DEK alongside ciphertext
- Implement key caching to reduce KMS API calls
- Handle key rotation with automatic re-encryption
- Implement multi-region encryption for disaster recovery
Key Concepts
Envelope Encryption Flow
- Call
kms:GenerateDataKeyto get plaintext DEK + encrypted DEK - Use plaintext DEK to encrypt data locally (AES-256-GCM)
- Store encrypted DEK alongside ciphertext
- Discard plaintext DEK from memory
- For decryption: call
kms:Decrypton encrypted DEK, then decrypt data
Show full SKILL.md (165 more words)Show less
Advantages Over Direct KMS Encryption
| Aspect | Direct KMS | Envelope Encryption |
|---|---|---|
| Max data size | 4 KB | Unlimited |
| Latency | Network round-trip per operation | Local encryption |
| Cost | $0.03/10,000 requests | Fewer KMS requests |
| Offline | Not possible | Yes (with cached DEKs) |
KMS Key Types
- AWS Managed: AWS creates and manages (
aws/s3,aws/ebs) - Customer Managed: You create and manage policies
- Custom Key Store: Backed by CloudHSM cluster
Security Considerations
- Never store plaintext DEK; only keep encrypted DEK
- Use key policies to restrict who can call GenerateDataKey and Decrypt
- Enable AWS CloudTrail logging for all KMS API calls
- Implement key rotation (automatic annual rotation for CMKs)
- Use encryption context for authenticated encryption metadata
- Handle KMS throttling with exponential backoff
Validation Criteria
- GenerateDataKey returns plaintext and encrypted DEK
- Data encrypts correctly with plaintext DEK using AES-256-GCM
- Encrypted DEK can be decrypted via KMS Decrypt API
- Decrypted DEK recovers the original data
- Plaintext DEK is wiped from memory after use
- Encryption context is validated during decryption
- Key rotation re-encrypts DEKs with new master key
© mukul975, Apache-2.0. 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 7 other files (scripts, references, assets) in skills/implementing-envelope-encryption-with-aws-kms of mukul975/Anthropic-Cybersecurity-Skills.
- SKILL.md
- LICENSE
- assets/template.md
- references/api-reference.md
- references/standards.md
- references/workflows.md
- scripts/agent.py
- scripts/process.py
Open the folder on GitHubat commit 54a7988
Compare with similar skills
Implementing Envelope Encryption With AWS Kms 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 |
|---|---|---|---|---|---|---|
| Implementing Envelope Encryption With AWS Kms this skillmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~954 | Automated safety check: Pass | Apache-2.0 | |
| External SignerNethereum/Nethereum | 2.3k | — | ~2.3k | Automated safety check: Pass | MIT | |
| Credentialsalinaqi/maggy | 707 | — | ~2.4k | Automated safety check: Notes | MIT | |
| Hashicorp VaultBagelHole/DevOps-Security-Agent-Skills | 1.1k | — | ~2k | Automated safety check: Pass | MIT | |
| AWS SDK Java V2 Kmsgiuseppe-trisciuoglio/developer-kit | 355 | 1 repos | ~3.6k | Automated safety check: Notes | MIT | |
| Sops EncryptionBagelHole/DevOps-Security-Agent-Skills | 1.1k | — | ~539 | Automated safety check: Pass | MIT |
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Questions about Implementing Envelope Encryption With AWS Kms
What does Implementing Envelope Encryption With AWS Kms do?
Implements envelope encryption with AWS KMS, encrypting data locally with a data encryption key (DEK) and protecting that DEK with a KMS-managed key (KEK), covering the encrypt/decrypt flow, KMS key…. Implementing Envelope Encryption With AWS Kms is an agent skill from mukul975/Anthropic-Cybersecurity-Skills. Implements envelope encryption with AWS KMS, encrypting data locally with a data encryption key (DEK) and protecting that DEK with a KMS-managed key (KEK), covering the encrypt/decrypt flow, KMS key types, and security validation criteria.
When should I use Implementing Envelope Encryption With AWS Kms?
Implementing Envelope Encryption With AWS Kms fits situations like: designing key management for encrypting large; numerous data objects on AWS; reducing direct KMS API call volume.
How do I install Implementing Envelope Encryption With AWS Kms in Claude Code?
Run `npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill implementing-envelope-encryption-with-aws-kms -a claude-code`. Or copy the skill folder (skills/implementing-envelope-encryption-with-aws-kms in mukul975/Anthropic-Cybersecurity-Skills) into .claude/skills/implementing-envelope-encryption-with-aws-kms in your project. Claude Code loads it when a task matches its description.
How do I install Implementing Envelope Encryption With AWS Kms in Codex?
Run `npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill implementing-envelope-encryption-with-aws-kms -a codex`. Or copy the skill folder (skills/implementing-envelope-encryption-with-aws-kms in mukul975/Anthropic-Cybersecurity-Skills) into .agents/skills/implementing-envelope-encryption-with-aws-kms in your project. Codex loads it when a task matches its description.
Can I use Implementing Envelope Encryption With AWS Kms 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 mukul975/Anthropic-Cybersecurity-Skills --skill implementing-envelope-encryption-with-aws-kms -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/implementing-envelope-encryption-with-aws-kms, .gemini/skills/implementing-envelope-encryption-with-aws-kms, .github/skills/implementing-envelope-encryption-with-aws-kms and .opencode/skills/implementing-envelope-encryption-with-aws-kms in your project.
What does Implementing Envelope Encryption With AWS Kms need to run?
Going by SKILL.md and its folder, Implementing Envelope Encryption With AWS Kms needs Python for the scripts in its folder. Our summary lists: Python 3.
Does Implementing Envelope Encryption With AWS Kms 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 Implementing Envelope Encryption With AWS Kms 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Implementing Envelope Encryption With AWS Kms use?
Implementing Envelope Encryption With AWS Kms is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Implementing Envelope Encryption With AWS Kms use?
About 954 tokens (SKILL.md is roughly 3.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.3k tokens, read only when the agent opens those files.
What are the alternatives to Implementing Envelope Encryption With AWS Kms?
Skills that share tags, products or a category with Implementing Envelope Encryption With AWS Kms: External Signer (Nethereum/Nethereum, 2.3k stars), Credentials (alinaqi/maggy, 707 stars), Hashicorp Vault (BagelHole/DevOps-Security-Agent-Skills, 1.1k stars) and AWS SDK Java V2 Kms (giuseppe-trisciuoglio/developer-kit, 355 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Implementing Envelope Encryption With AWS Kms?
mukul975 (a GitHub user) maintains it in mukul975/Anthropic-Cybersecurity-Skills, which has 33,922 GitHub stars. The repository holds 637 skills in this directory. The repository was last updated on August 31, 2026.
Source: mukul975/Anthropic-Cybersecurity-Skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.