demos/keyexch/x25519.c

66     PEER_DATA *local_peer)
73         local_peer->privk =
78         local_peer->privk = EVP_PKEY_Q_keygen(libctx, propq, "X25519");
80     if (local_peer->privk == NULL) {
86     if (EVP_PKEY_get_octet_string_param(local_peer->privk,
88                                         local_peer->pubk_data,
89                                         sizeof(local_peer->pubk_data),
105         EVP_PKEY_free(local_peer->privk);
106         local_peer->privk = NULL;
120     PEER_DATA *local_peer,
127     local_peer->secret = NULL;
139     ctx = EVP_PKEY_CTX_new_from_pkey(libctx, local_peer->privk, propq);
158     if (EVP_PKEY_derive(ctx, NULL, &local_peer->secret_len) == 0) {
168     if (local_peer->secret_len != 32) { /* unreachable */
174     local_peer->secret = OPENSSL_malloc(local_peer->secret_len);
175     if (local_peer->secret == NULL) {
181     if (EVP_PKEY_derive(ctx, local_peer->secret,
182                         &local_peer->secret_len) == 0) {
187     printf("Shared secret (%s):\n", local_peer->name);
188     BIO_dump_indent_fp(stdout, local_peer->secret, local_peer->secret_len, 2);
196         OPENSSL_clear_free(local_peer->secret, local_peer->secret_len);
197         local_peer->secret = NULL;