Does openssl (1.1.0.b) not support secp256r1? (openssl ecparam - list_curves)

Question

my server and client require secp256r1 to shake hands, but openssl doesn't seem to support secp256r1.

when I openssl ecparam -list_curves command, I could not see secp256r1

I used openssl 1.1.0b. Interestingly, openssl does not support secp256r1?

Answer 1

OpenSSL supports secp256r1, it is simply called prime256v1. Take a look at section 2.1.1.1 in RFC 5480 .

- Note that in [PKI-ALG] the secp192r1 curve was referred to as

- prime192v1, and the secp256r1 curve was designated as

- prime256v1.