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### Tiny ECDH in C
This is a small and portable implementation of the [Elliptic-Curve Diffie-Hellman key agreement algorithm](https://en.wikipedia.org/wiki/Elliptic-curve_Diffie%E2%80%93Hellman) written in C.
It is epspecially usable for generating ephemeral session key and encrypting communication symmetrically after agreement.
It is especially usable for generating ephemeral session keys and encrypting communications symmetrically after agreement.
You can choose between 10 standard NIST curves of different sizes. 5 "pseudo-random" curves and 5 Koblitz curves providing from ~80 to ~256 bits symmetrically equivalent security. See [ecdh.h](https://github.com/kokke/tiny-ECDH-c/blob/master/ecdh.h) for clarification.