+static int setup_peer(BIO *err, EVP_PKEY_CTX *ctx, int peerform,
+ const char *file)
+ {
+ EVP_PKEY *peer = NULL;
+ int ret;
+ if (!ctx)
+ {
+ BIO_puts(err, "-peerkey command before -inkey\n");
+ return 0;
+ }
+
+ peer = load_pubkey(bio_err, file, peerform, 0, NULL, NULL, "Peer Key");
+
+ if (!peer)
+ {
+ BIO_printf(bio_err, "Error reading peer key %s\n", file);
+ ERR_print_errors(err);
+ return 0;
+ }
+
+ ret = EVP_PKEY_derive_set_peer(ctx, peer);
+
+ EVP_PKEY_free(peer);
+ if (ret <= 0)
+ ERR_print_errors(err);
+ return ret;
+ }
+
+static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
+ unsigned char *out, size_t *poutlen,
+ unsigned char *in, size_t inlen)
+ {
+ int rv = 0;
+ switch(pkey_op)
+ {
+ case EVP_PKEY_OP_VERIFYRECOVER:
+ rv = EVP_PKEY_verify_recover(ctx, out, poutlen, in, inlen);
+ break;
+
+ case EVP_PKEY_OP_SIGN:
+ rv = EVP_PKEY_sign(ctx, out, poutlen, in, inlen);
+ break;
+
+ case EVP_PKEY_OP_ENCRYPT:
+ rv = EVP_PKEY_encrypt(ctx, out, poutlen, in, inlen);
+ break;
+
+ case EVP_PKEY_OP_DECRYPT:
+ rv = EVP_PKEY_decrypt(ctx, out, poutlen, in, inlen);
+ break;
+
+ case EVP_PKEY_OP_DERIVE:
+ rv = EVP_PKEY_derive(ctx, out, poutlen);
+ break;
+
+ }
+ return rv;
+ }