atecc-openssl-engine
OpenSSL Engine implementation using ATECC508 for ECC key storage, ECDSA sign/verify, ECDH, and FIPS Random Number Generator (RNG).
Contents of engine_atecc folder of Atmel/Microchip original cryptoauth-openssl-engine repo: https://github.com/MicrochipTech/cryptoauth-openssl-engine/tree/40b346461f34acbd4c234540091d4323b2e02471
Used for building seperatly from openssl.