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mukul975
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Complete skill folder anatomy across all cybersecurity skills: - scripts/agent.py: 80-150 line Python agents using real libraries (impacket, boto3, azure-mgmt-*, kubernetes, pefile, yara, scapy, shodan, stix2, etc.) - references/api-reference.md: real API documentation with method signatures - LICENSE: MIT license for all skill folders
56 lines
1.7 KiB
Markdown
56 lines
1.7 KiB
Markdown
# API Reference: Ed25519 Digital Signature Agent
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## Dependencies
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| Library | Version | Purpose |
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|---------|---------|---------|
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| cryptography | >=41.0 | Ed25519 key generation, signing, verification |
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## CLI Usage
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```bash
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# Generate keypair
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python scripts/agent.py --generate-keys --output-dir /keys/
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# Sign a file
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python scripts/agent.py --sign release.tar.gz --private-key /keys/ed25519_private.pem
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# Verify files
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python scripts/agent.py --verify release.tar.gz --public-key /keys/ed25519_public.pem
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```
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## Functions
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### `generate_keypair(output_dir, key_name) -> dict`
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`Ed25519PrivateKey.generate()`, serializes with `private_bytes(PEM, PKCS8, NoEncryption)` and `public_bytes(PEM, SubjectPublicKeyInfo)`.
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### `sign_message(private_key_path, message) -> dict`
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Loads key via `load_pem_private_key()`, calls `key.sign(message)`. Returns base64 and hex signature.
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### `sign_file(private_key_path, file_path) -> dict`
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Signs file contents, writes `.ed25519.sig` JSON containing signature, hash, timestamp.
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### `verify_message(public_key_path, message, signature_b64) -> dict`
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Calls `key.verify(signature, message)`. Catches `InvalidSignature`.
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### `verify_file(public_key_path, file_path, sig_path) -> dict`
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Verifies file against `.ed25519.sig` JSON, checks hash match.
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## cryptography API
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| Method | Purpose |
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|--------|---------|
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| `Ed25519PrivateKey.generate()` | Generate 32-byte private key |
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| `private_key.sign(data)` | Create 64-byte signature |
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| `public_key.verify(signature, data)` | Verify signature |
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| `load_pem_private_key(data, password)` | Load PEM key |
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## Output Schema
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```json
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{
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"verifications": [{"file": "release.tar.gz", "valid": true}],
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"valid": 3, "invalid": 0
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}
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```
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