EVP_PKEY_get1_RSA
rsa = EVP_PKEY_get1_RSA(pkey);
rsa = EVP_PKEY_get1_RSA(pkey);
key = (ASN1_VALUE *)EVP_PKEY_get1_RSA(pkey);
rtmp = EVP_PKEY_get1_RSA(key);
struct rsa_st *EVP_PKEY_get1_RSA(EVP_PKEY *pkey);
if ((rsa = EVP_PKEY_get1_RSA(pkey)) == NULL ||
if ((skey->rsa = EVP_PKEY_get1_RSA(pkey)) == NULL &&
(*k)->rsa = EVP_PKEY_get1_RSA(pubkey);
prv->rsa = EVP_PKEY_get1_RSA(pk);