awslabs/s2n-bignum

Cryptography-oriented big integer library with constant-time, stack-allocated (no_std-friendly) implementations of modern formulas

Cryptographic Primitive Code Generation by Fiat

Intel® Cryptography Primitives Library is a secure, fast and lightweight library of building blocks for cryptography, highly-optimized for various Intel® CPUs

Code

AWS-LC is a general-purpose cryptographic library maintained by the AWS Cryptography team for AWS and their customers. It іs based on code from the Google BoringSSL project and the OpenSSL project.

Constantine: modular, high-performance, zero-dependency cryptography stack for verifiable computation, proof systems and blockchain protocols.

Optimized C library for EC operations on curve secp256k1

Common cryptographic library used in software at Mysten Labs.

An implementation of the TLS/SSL protocols