horsth

according to https://tools.ietf.org/search/rfc4492 "secp256r1" should be the same thing as "prime256v1" and the later one seems to be supported in xca. (disclaimer: I am no expert in these things) Maybe...

with my original problem, how to generate the ECC key with secp256r1 now solved my only remaining "problem" is, that the documentation indicates one should be able to write "arbitrary"...