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https://github.com/varun-r-mallya/py-libp2p.git
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124 lines
3.6 KiB
Python
124 lines
3.6 KiB
Python
"""
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Basic QUIC Security implementation for Module 1.
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This provides minimal TLS configuration for QUIC transport.
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Full implementation will be in Module 5.
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"""
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from dataclasses import dataclass
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import os
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import tempfile
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from typing import Optional
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from libp2p.crypto.keys import PrivateKey
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from libp2p.peer.id import ID
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from .exceptions import QUICSecurityError
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@dataclass
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class TLSConfig:
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"""TLS configuration for QUIC transport."""
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cert_file: str
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key_file: str
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ca_file: Optional[str] = None
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def generate_libp2p_tls_config(private_key: PrivateKey, peer_id: ID) -> TLSConfig:
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"""
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Generate TLS configuration with libp2p peer identity.
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This is a basic implementation for Module 1.
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Full implementation with proper libp2p TLS spec compliance
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will be provided in Module 5.
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Args:
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private_key: libp2p private key
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peer_id: libp2p peer ID
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Returns:
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TLS configuration
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Raises:
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QUICSecurityError: If TLS configuration generation fails
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"""
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try:
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# TODO: Implement proper libp2p TLS certificate generation
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# This should follow the libp2p TLS specification:
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# https://github.com/libp2p/specs/blob/master/tls/tls.md
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# For now, create a basic self-signed certificate
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# This is a placeholder implementation
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# Create temporary files for cert and key
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with tempfile.NamedTemporaryFile(
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mode="w", suffix=".pem", delete=False
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) as cert_file:
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cert_path = cert_file.name
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# Write placeholder certificate
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cert_file.write(_generate_placeholder_cert(peer_id))
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with tempfile.NamedTemporaryFile(
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mode="w", suffix=".key", delete=False
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) as key_file:
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key_path = key_file.name
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# Write placeholder private key
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key_file.write(_generate_placeholder_key(private_key))
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return TLSConfig(cert_file=cert_path, key_file=key_path)
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except Exception as e:
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raise QUICSecurityError(f"Failed to generate TLS config: {e}") from e
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def _generate_placeholder_cert(peer_id: ID) -> str:
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"""
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Generate a placeholder certificate.
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This is a temporary implementation for Module 1.
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Real implementation will embed the peer ID in the certificate
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following the libp2p TLS specification.
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"""
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# This is a placeholder - real implementation needed
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return f"""-----BEGIN CERTIFICATE-----
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# Placeholder certificate for peer {peer_id}
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# TODO: Implement proper libp2p TLS certificate generation
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# This should embed the peer ID in a certificate extension
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# according to the libp2p TLS specification
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-----END CERTIFICATE-----"""
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def _generate_placeholder_key(private_key: PrivateKey) -> str:
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"""
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Generate a placeholder private key.
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This is a temporary implementation for Module 1.
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Real implementation will use the actual libp2p private key.
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"""
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# This is a placeholder - real implementation needed
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return """-----BEGIN PRIVATE KEY-----
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# Placeholder private key
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# TODO: Convert libp2p private key to TLS-compatible format
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-----END PRIVATE KEY-----"""
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def cleanup_tls_config(config: TLSConfig) -> None:
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"""
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Clean up temporary TLS files.
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Args:
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config: TLS configuration to clean up
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"""
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try:
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if os.path.exists(config.cert_file):
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os.unlink(config.cert_file)
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if os.path.exists(config.key_file):
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os.unlink(config.key_file)
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if config.ca_file and os.path.exists(config.ca_file):
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os.unlink(config.ca_file)
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except Exception:
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# Ignore cleanup errors
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pass
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