Unfragile

"k256" is most likely the Rust crate for the secp256k1 elliptic curve, which none of the candidate pages names directly. The closest matches in the sources are the Rust cryptography libraries and general crypto toolkits, listed below as candidates; none of the sources confirms k256 support, so the request is ambiguous.

A question back: Do you mean the k256 Rust crate (secp256k1 elliptic curve), or something else by k256, and which language or platform will you use it from?

1
dalek cryptographydalek.rswebsite read, tools not yet checked
A suite of Rust cryptographic libraries, including a pure-Rust implementation of Ristretto and Curve25519 group operations for elliptic-curve crypto protocols 2.
Website Docs
2
Cryptographycryptography.iowebsite read, tools not yet checked
A Python library of high-level recipes and low-level interfaces to common cryptographic algorithms such as ciphers, digests and key derivation 6.
Website Docs
+4 community tools built for it
3
pyOpenSSLpyopenssl.orgwebsite read, tools not yet checked
A thin Python wrapper around a subset of the OpenSSL library for cryptographic operations 10.
Website Docs

Sources

2dalek cryptographydalek.rs · read 2026-10-29
6Welcome to pyca/cryptography — Cryptography 51.0.0-dev1 documentationcryptography.io · read 2026-10-29
10Welcome to pyOpenSSL’s documentation! — pyOpenSSL 26.4.0 documentationpyopenssl.org · read 2026-10-29

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