iscc-crypto 0.1.0

ISCC - Crypto

ISCC - Crypto

iscc-crypto is the cryptographic signing and verification module for the ISCC (International Standard Content Code) Framework.

Features

• Ed25519 key generation and management
• JSON canonicalization and signing
• W3C Verifiable Credentials Data Integrity proofs
• Multibase and multikey support
• Minimal external dependencies for core cryptographic operations

Installation

Use the package manager pip to install iscc-crypto:

pip install iscc-crypto

Quick Start

import iscc_crypto as ic

# Generate new Ed25519 keypair
keypair = ic.key_generate()
print(f"Public Key: {keypair.public_key}")
print(f"Secret Key: {keypair.secret_key}")

# Sign a JSON document
doc = {"hello": "world"}
signed = ic.sign_json(doc, keypair)
print(f"Signed Doc: {signed}")

# Verify signature
verified = ic.verify_json(signed)
print(f"Verified Doc: {verified}")

# Create W3C Data Integrity Proof
vc = {"type": "VerifiableCredential", "issuer": "did:web:example.com"}
signed_vc = ic.sign_vc(vc, keypair)
print(f"Signed VC: {signed_vc}")

# Verify W3C Data Integrity Proof
verified, doc = ic.verify_vc(signed_vc, keypair.pk_obj)
print(f"VC Verified: {verified}")

Documentation

Documentation is published at https://crypto.iscc.codes

Development

Requirements

• Python 3.10 or higher
• Poetry for dependency management

Development Setup

git clone https://github.com/iscc/iscc-crypto.git
cd iscc-crypto
poetry install

Testing

Run the test suite:

poetry run pytest

Maintainers

@titusz

Contributing

Pull requests are welcome. For significant changes, please open an issue first to discuss your plans. Please make sure to update tests as appropriate.

You may also want join our developer chat on Telegram at https://t.me/iscc_dev.

License

iscc-crypto is licensed under the Apache License, Version 2.0