Simple and secure ECC and ECDSA

Optimized C library for EC operations on curve secp256k1

High-Level Usability Wrapper for PHPECC

Pure PHP Elliptic Curve Cryptography Library

A modern, portable, easy to use crypto library.

A very small ECC implementation for 8-bit microcontrollers

A portable C library for generating cypto-secure random bytes

ECDH and ECDSA for 8-bit, 32-bit, and 64-bit processors.

A lightweight and fast pure Java ECDSA library

A lightweight and fast PHP ECDSA library

LibTomCrypt is a fairly comprehensive, modular and portable cryptographic toolkit that provides developers with a vast array of well known published block ciphers, one-way hash functions, chaining …

TLS/SSL and crypto library

Bitcoin node written in C

A Proof-of-Work miner (CPU) together with a unique 0x10 hashing algorithm.

Software implementation in C of the FIPS 198 Keyed-Hash Message Authentication Code HMAC for SHA2 (namely HMAC-SHA-224, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512).

A minimal Bitcoin wallet intended for embedded devices

A tiny implementation of SHA-3, SHAKE, Keccak, and sha3sum

BLAKE2 official implementations

Aws Crypto Abstraction Layer: Cross-Platform, C99 wrapper for cryptography primitives.