Key agreements with Elliptic-Curve Diffie-Hellman
Over the last few years, ECC has been gaining momentum as an alternative to RSA, being used in an ever-increasing number of applications and scenarios.
While RSA is considered a safe and reliable algorithm (assuming a long-enough key size is chosen and the proper precautions, such as the correct use of padding, are in place) and having been first published in 1977 it certainly falls into the category of "tried and tested" cryptosystems, there are certain advantages to ECC that make it appealing.
Algorithms based on Elliptic Curves (EC) are generally faster and use fewer resources, thus being more desirable on smaller, less powerful systems (such as IoT devices). Additionally, ECs offer the same level of security as RSA while using significantly smaller keys: a 256-bit EC key is comparable in strength to a 3,072-bit RSA key. Not only are smaller keys easier to manage, but they also produce smaller signatures (as we&apos...
