# Send Encryption to your agent
Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.
## Fast path
- Download the package from Yavira.
- Extract it into a folder your agent can access.
- Paste one of the prompts below and point your agent at the extracted folder.
## Suggested prompts
### New install

```text
I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Tell me what you changed and call out any manual steps you could not complete.
```
### Upgrade existing

```text
I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Summarize what changed and any follow-up checks I should run.
```
## Machine-readable fields
```json
{
  "schemaVersion": "1.0",
  "item": {
    "slug": "encryption",
    "name": "Encryption",
    "source": "tencent",
    "type": "skill",
    "category": "安全合规",
    "sourceUrl": "https://clawhub.ai/ivangdavila/encryption",
    "canonicalUrl": "https://clawhub.ai/ivangdavila/encryption",
    "targetPlatform": "OpenClaw"
  },
  "install": {
    "downloadUrl": "/downloads/encryption",
    "sourceDownloadUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=encryption",
    "sourcePlatform": "tencent",
    "targetPlatform": "OpenClaw",
    "packageFormat": "ZIP package",
    "primaryDoc": "SKILL.md",
    "includedAssets": [
      "SKILL.md",
      "infra.md",
      "mobile.md",
      "patterns.md"
    ],
    "downloadMode": "redirect",
    "sourceHealth": {
      "source": "tencent",
      "slug": "encryption",
      "status": "healthy",
      "reason": "direct_download_ok",
      "recommendedAction": "download",
      "checkedAt": "2026-04-29T05:54:06.550Z",
      "expiresAt": "2026-05-06T05:54:06.550Z",
      "httpStatus": 200,
      "finalUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=encryption",
      "contentType": "application/zip",
      "probeMethod": "head",
      "details": {
        "probeUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=encryption",
        "contentDisposition": "attachment; filename=\"encryption-1.0.0.zip\"",
        "redirectLocation": null,
        "bodySnippet": null,
        "slug": "encryption"
      },
      "scope": "item",
      "summary": "Item download looks usable.",
      "detail": "Yavira can redirect you to the upstream package for this item.",
      "primaryActionLabel": "Download for OpenClaw",
      "primaryActionHref": "/downloads/encryption"
    },
    "validation": {
      "installChecklist": [
        "Use the Yavira download entry.",
        "Review SKILL.md after the package is downloaded.",
        "Confirm the extracted package contains the expected setup assets."
      ],
      "postInstallChecks": [
        "Confirm the extracted package includes the expected docs or setup files.",
        "Validate the skill or prompts are available in your target agent workspace.",
        "Capture any manual follow-up steps the agent could not complete."
      ]
    }
  },
  "links": {
    "detailUrl": "https://openagent3.xyz/skills/encryption",
    "downloadUrl": "https://openagent3.xyz/downloads/encryption",
    "agentUrl": "https://openagent3.xyz/skills/encryption/agent",
    "manifestUrl": "https://openagent3.xyz/skills/encryption/agent.json",
    "briefUrl": "https://openagent3.xyz/skills/encryption/agent.md"
  }
}
```
## Documentation

### When to Use

Encrypting files, database fields, or app storage
Password hashing (bcrypt, argon2)
Key management, rotation, derivation
TLS/certificate configuration
Auditing code for crypto mistakes
Mobile secure storage (Keychain, Keystore)

### Algorithm Selection

PurposeUseAvoidPasswordsargon2id, bcrypt (cost≥12)MD5, SHA1, plain SHA256SymmetricAES-256-GCM, ChaCha20-Poly1305AES-ECB, DES, RC4AsymmetricRSA-4096+OAEP, Ed25519, P-256RSA-1024, PKCS#1 v1.5Key derivationPBKDF2 (≥600k), scrypt, argon2Single-pass hashJWT signingRS256, ES256HS256 with weak secretTLS1.2+ onlyTLS 1.0/1.1, SSLv3

### Critical Rules

Never reuse IVs/nonces — AES-GCM + repeated nonce = catastrophic
Use authenticated encryption (AEAD) — Plain CBC enables padding oracles
Hash passwords, don't encrypt — Hashing is one-way
No hardcoded keys — Use env vars, KMS, or Vault
No Math.random() for crypto — Use CSPRNG only
Constant-time comparisons — Prevent timing attacks on secrets
Separate keys by purpose — Encryption ≠ signing ≠ backup

### File Encryption (CLI)

# age (modern, simple)
age -p -o file.age file.txt
age -d -o file.txt file.age

# GPG
gpg -c --cipher-algo AES256 file.txt

### Platform-Specific

See patterns.md for code snippets:

Password hashing (Node, Python, Go)
Envelope encryption with KMS
JWT with RS256 key rotation
Secure token generation

See mobile.md for:

iOS Keychain wrapper
Android EncryptedSharedPreferences
SQLCipher setup
Biometric auth integration
Certificate pinning

See infra.md for:

TLS certificate auto-renewal
HashiCorp Vault policies
mTLS between services
Backup encryption verification

### Audit Checklist

No plaintext passwords in DB/logs/env
 No secrets in git history
 No hardcoded keys in source
 No Math.random() for security
 No deprecated algorithms (MD5, SHA1, DES)
 No disabled cert validation
 IVs/nonces never reused
 PBKDF2 iterations ≥600k / bcrypt cost ≥12
 TLS 1.2+ enforced, old protocols disabled
 Key rotation procedure documented
## Trust
- Source: tencent
- Verification: Indexed source record
- Publisher: ivangdavila
- Version: 1.0.0
## Source health
- Status: healthy
- Item download looks usable.
- Yavira can redirect you to the upstream package for this item.
- Health scope: item
- Reason: direct_download_ok
- Checked at: 2026-04-29T05:54:06.550Z
- Expires at: 2026-05-06T05:54:06.550Z
- Recommended action: Download for OpenClaw
## Links
- [Detail page](https://openagent3.xyz/skills/encryption)
- [Send to Agent page](https://openagent3.xyz/skills/encryption/agent)
- [JSON manifest](https://openagent3.xyz/skills/encryption/agent.json)
- [Markdown brief](https://openagent3.xyz/skills/encryption/agent.md)
- [Download page](https://openagent3.xyz/downloads/encryption)