{"categories":[{"label":"Cryptography","url":"https://skillfed.io/packages/category/security-cryptography/2"}],"enrichment":{"capability":"Provides fast elliptic curve digital signature operations (signing and verification) using NIST and Certicom curves, with no nonce reuse and constant-time point multiplication to mitigate timing attacks.","skillfed_tags":["constant-time","nonce-safe","performance-focused"],"use_cases":["Signing and verifying blockchain transactions where secp256k1 performance is critical.","Generating and validating digital signatures in high-throughput authentication systems.","Prototyping or benchmarking elliptic curve cryptography implementations.","Building cryptographic protocols that require specific NIST or Brainpool curves.","Educational exploration of constant-time ECC arithmetic and nonce-safe ECDSA."],"what_it_does":"fastecdsa is a Python wrapper around optimized C code for elliptic curve cryptography, specifically digital signatures. It supports NIST curves (P192, P224, P256, P384, P521), Certicom secp curves including secp256k1 (Bitcoin's curve), and Brainpool curves, plus arbitrary Weierstrass-form curves. The library prioritizes constant-time operations to resist timing side-channel attacks, uses RFC6979 for deterministic nonce generation, and validates all points before operating on them.\n\nThe package is designed for developers who need fast ECDSA operations and can manage the system-level dependency on GMP. It has no Python runtime dependencies and supports Python 3.9 through 3.13 on Linux and macOS. The author explicitly recommends using more established libraries for security-critical applications, positioning this as a performant option for applications where speed matters and the risk profile is acceptable.","worth_installing":"Yes, if you need fast ECDSA operations and can install GMP on Linux or macOS. The library is actively maintained, has no known vulnerabilities, and offers significant performance gains over pure-Python alternatives. However, the author cautions against using it for security-critical applications without additional review\u2014use an audited library like libsodium or cryptography for production security-sensitive code. The Windows limitation and system dependency on GMP are real friction points."},"id":"fastecdsa","links":{"html":"https://skillfed.io/packages/fastecdsa","md":"https://skillfed.io/packages/fastecdsa.md","pypi":"https://pypi.org/project/fastecdsa/"},"maintenance":{"status":"active"},"meta":{"latest_release":"2025-01-28","license_spdx":null,"license_treatment":"permissive","name":"fastecdsa","python_support":"supports_current","summary":"Fast elliptic curve digital signatures"},"popularity":{"monthly_downloads":225806,"position":9213,"tier":"top_15000"},"security":{"n_vulnerabilities":0},"version":"3.0.1"}