Re-introduce Diffie-Hellman (FFDH, ECDH) in benchmark program #670
Description
Suggested enhancement
The benchmark program no longer covers FFDH or ECDH, since the legacy APIs (dhm.g, ecdh.h) have been removed entirely. This task is to re-introduce benchmarking of those primitives in programs/test/benchmark.c.
Since they both use the same PSA Crypto API, only with different key types and algs, we might want to introduce a common helper function. However we still want two separate command-line arguments. Each of them (ECDH, FFDH) will have a table with the list of parameters (curves) to test.
Justification
TF-PSA-Crypto needs this because we want the benchmark program to cover all the primitives we offer.