Swarmauri SSH Key Provider

An asynchronous KeyProviderBase implementation that keeps SSH key material in memory and bridges it to Swarmauri's signing abstractions.

Features

• Generate new Ed25519, RSA-PSS (SHA-256), or ECDSA P-256 key pairs on demand.
• Import existing private keys (PEM) or public keys (OpenSSH) while respecting each key's ExportPolicy.
• Rotate keys, enumerate versions, and optionally destroy specific versions or entire key identifiers.
• Export public keys as RFC 7517-compliant JWKs/JWKS with OpenSSH fingerprints embedded in the tags metadata.
• Produce random bytes and derive keying material using the HKDF construction (RFC 5869).

Installation

Choose the tool that matches your workflow:

# pip
pip install swarmauri_keyprovider_ssh

# Poetry
poetry add swarmauri_keyprovider_ssh

# uv
uv add swarmauri_keyprovider_ssh

Usage

The provider exposes an asynchronous interface for creating and managing SSH-based signing keys. The snippet below creates a new Ed25519 key and exports its public component as a JSON Web Key (JWK):

import asyncio
from swarmauri_keyprovider_ssh import SshKeyProvider
from swarmauri_core.key_providers.types import (
    KeySpec,
    KeyAlg,
    KeyClass,
    ExportPolicy,
    KeyUse,
)


async def main() -> None:
    provider = SshKeyProvider()
    spec = KeySpec(
        klass=KeyClass.asymmetric,
        alg=KeyAlg.ED25519,
        uses=(KeyUse.SIGN, KeyUse.VERIFY),
        export_policy=ExportPolicy.PUBLIC_ONLY,
    )
    ref = await provider.create_key(spec)
    jwk = await provider.get_public_jwk(ref.kid)
    print(jwk)


asyncio.run(main())

Keys can also be rotated, and the provider will track key versions:

ref = await provider.create_key(spec)
await provider.rotate_key(ref.kid)
assert await provider.list_versions(ref.kid) == (1, 2)

Use destroy_key() to remove an entire key identifier or just a single version, and jwks(prefix_kids=...) when you need to emit a filtered JWKS for downstream consumers.

Existing keys can be imported from PEM or OpenSSH data and exposed via JWKS:

from pathlib import Path

pem = Path("id_ed25519").read_bytes()
ref = await provider.import_key(spec, pem)
jwks = await provider.jwks()

Want to help?

If you want to contribute to swarmauri-sdk, read up on our guidelines for contributing that will help you get started.