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

README.md

@@ -173,7 +173,8 @@ Under construct
 * [krypton](https://github.com/ezhangle/krypton) - Embedded TLS/DTLS library, source and binary compatible OpenSSL subset.
 * [wolfTPM](https://github.com/wolfSSL/wolfTPM) - Highly portable TPM 2.0 library, designed for embedded use.
 * [salty](https://github.com/ycrypto/salty) - Ed25519 signatures with assembly optimizations for Cortex-M4 and Cortex-M33.
-* [mbedTLS](https://github.com/Mbed-TLS/mbedtls) - Open source, portable, easy to use, readable and flexible TLS library, and reference implementation of the PSA Cryptography API. 
+* [mbedTLS](https://github.com/Mbed-TLS/mbedtls) - Open source, portable, easy to use, readable and flexible TLS library, and reference implementation of the PSA Cryptography API.
+* [micro-ecc](https://github.com/kmackay/micro-ecc) - ECDH and ECDSA for 8-bit, 32-bit, and 64-bit processors.
 
 
 ### Compression