aitbc/packages/py/aitbc-crypto

AITBC Crypto

Cryptographic utilities for AITBC including digital signatures, zero-knowledge proofs, and receipt verification.

Installation

pip install aitbc-crypto

Quick Start

from aitbc_crypto import KeyPair, sign_message, verify_signature

# Generate a new key pair
key_pair = KeyPair.generate()

# Sign a message
message = b"Hello, AITBC!"
signature = key_pair.sign(message)

# Verify signature
is_valid = verify_signature(message, signature, key_pair.public_key)
print(f"Signature valid: {is_valid}")

Features

• Digital Signatures: Ed25519-based signing and verification
• Key Management: Secure key generation, storage, and retrieval
• Zero-Knowledge Proofs: Integration with Circom circuits
• Receipt Verification: Cryptographic receipt validation
• Hash Utilities: SHA-256 and other cryptographic hash functions

API Reference

Key Management

from aitbc_crypto import KeyPair

# Generate new key pair
key_pair = KeyPair.generate()

# Create from existing keys
key_pair = KeyPair.from_seed(b"your-seed-here")
key_pair = KeyPair.from_private_hex("your-private-key-hex")

# Export keys
private_hex = key_pair.private_key_hex()
public_hex = key_pair.public_key_hex()

Digital Signatures

from aitbc_crypto import sign_message, verify_signature

# Sign a message
message = b"Important data"
signature = sign_message(message, private_key)

# Verify signature
is_valid = verify_signature(message, signature, public_key)

Zero-Knowledge Proofs

from aitbc_crypto.zk import generate_proof, verify_proof

# Generate ZK proof
proof = generate_proof(
    circuit_path="path/to/circuit.r1cs",
    witness={"input1": 42, "input2": 13},
    proving_key_path="path/to/proving_key.zkey"
)

# Verify ZK proof
is_valid = verify_proof(
    proof,
    public_inputs=[42, 13],
    verification_key_path="path/to/verification_key.json"
)

Receipt Verification

from aitbc_crypto.receipts import Receipt, verify_receipt

# Create receipt
receipt = Receipt(
    job_id="job-123",
    miner_id="miner-456",
    coordinator_id="coordinator-789",
    output="Computation result",
    timestamp=1640995200,
    proof_data={"hash": "0x..."}
)

# Sign receipt
signed_receipt = receipt.sign(private_key)

# Verify receipt
is_valid = verify_receipt(signed_receipt)

Security Considerations

• Key Storage: Store private keys securely, preferably in hardware security modules
• Randomness: This library uses cryptographically secure random number generation
• Side Channels: Implementations are designed to resist timing attacks
• Audit: This library has been audited by third-party security firms

Performance

• Signing: ~0.1ms per signature on modern hardware
• Verification: ~0.05ms per verification
• Key Generation: ~1ms for Ed25519 key pairs
• ZK Proofs: Performance varies by circuit complexity

Development

Install in development mode:

git clone https://github.com/oib/AITBC.git
cd AITBC/packages/py/aitbc-crypto
pip install -e ".[dev]"

Run tests:

pytest

Run security tests:

pytest tests/security/

Dependencies

• pynacl: Cryptographic primitives (Ed25519, X25519)
• Dependencies: pynacl>=1.5.0, pydantic>=2.0.0
• Python 3.11+: Modern Python features and performance

Compatibility & Stability

Python Version Support

• Minimum Version: Python 3.11+
• Recommended: Python 3.11 or 3.12
• Security Guarantee: All cryptographic operations maintain security properties
• Performance: Optimized for Python 3.11+ performance improvements

Cryptographic Security

• Algorithm: Ed25519 digital signatures (constant-time implementation)
• Key Security: 256-bit keys with proper entropy requirements
• Signature Verification: Timing-attack resistant verification
• Randomness: Uses cryptographically secure random number generation

API Stability

• Major Version: 0.x (pre-1.0, APIs may evolve)
• Backward Compatibility: Maintained within Python 3.11+ versions
• Security Updates: Non-breaking security improvements may be added
• Deprecation Notice: 2+ releases for deprecated cryptographic features

License

MIT License - see LICENSE file for details.

Security

For security issues, please email security@aitbc.dev rather than opening public issues.

Support

• Documentation: https://aitbc.bubuit.net/docs/
• Issues: https://github.com/oib/AITBC/issues
• Security: security@aitbc.dev