Digital Signatures Python Packages

ecdsa

pure-python ECDSA signature/verification and ECDH key agreement

dilithium-py

A pure python implementation of ML-DSA (FIPS 204) and CRYSTALS-Dilithium

signrequest-python-client

Official Python client for SignRequest.com

fipsign-sdk

Post-quantum signing SDK for Python — ML-DSA-65 (NIST FIPS 204)

blockchainkit

A Python toolkit for learning how blockchains work: 104 breakthroughs in cryptography, consensus, networking and smart contracts, from the one-time pad to Ethereum gas, each reproduced as a small, typed implementation with a figure and a runnable experiment.

collective-phase-control-fabric

Evidence-bound analysis and finite intervention control for collective workflows.

revenant

Cross-platform Python client for ARX CoSign electronic signatures via SOAP API

pypdfsuit

GoPDFSuit - Ultra Fast PDF Engine (Gin Web + gopdflib +pypdfsuit)

fipsign-mcp

MCP server for FIPSign — post-quantum signing via ML-DSA-65 (NIST FIPS 204)

behavry-verify

Independently verify Behavry APR evidence packages offline — hash chain and signature, with no Behavry account, database or network.

certifieddata-agent-commerce

Public API, SDKs, schemas, event contracts, and examples for CertifiedData Payments — a machine-readable payments and provenance layer for AI artifacts, certification, and settlement workflows.

provara-protocol

Tamper-evident memory protocol for humans and AI agents. Ed25519 + SHA-256 + event sourcing. 74 tests. One dependency. Apache 2.0.

pqcrypt

Post-quantum file encryption and signing from the command line

trelyan-pq

Open reference + Python SDK (trelyan-pq) for post-quantum (Falcon-1024) inscriptions on Algorand via the native falcon_verify opcode. MIT, TestNet-verified, CI-green.