- {
- DH *dh = NULL;
- if (ctx->pkey == NULL)
- {
- DHerr(DH_F_PKEY_DH_KEYGEN, DH_R_NO_PARAMETERS_SET);
- return 0;
- }
- dh = DH_new();
- if (!dh)
- return 0;
- EVP_PKEY_assign(pkey, ctx->pmeth->pkey_id, dh);
- /* Note: if error return, pkey is freed by parent routine */
- if (!EVP_PKEY_copy_parameters(pkey, ctx->pkey))
- return 0;
- return DH_generate_key(pkey->pkey.dh);
- }
-
-static int pkey_dh_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen)
- {
- int ret;
- if (!ctx->pkey || !ctx->peerkey)
- {
- DHerr(DH_F_PKEY_DH_DERIVE, DH_R_KEYS_NOT_SET);
- return 0;
- }
- ret = DH_compute_key(key, ctx->peerkey->pkey.dh->pub_key,
- ctx->pkey->pkey.dh);
- if (ret < 0)
- return ret;
- *keylen = ret;
- return 1;
- }
-
-const EVP_PKEY_METHOD dh_pkey_meth =
- {
- EVP_PKEY_DH,
- EVP_PKEY_FLAG_AUTOARGLEN,
- pkey_dh_init,
- pkey_dh_copy,
- pkey_dh_cleanup,
-
- 0,
- pkey_dh_paramgen,
-
- 0,
- pkey_dh_keygen,
-
- 0,
- 0,
-
- 0,
- 0,
-
- 0,0,
-
- 0,0,0,0,
-
- 0,0,
-
- 0,0,
-
- 0,
- pkey_dh_derive,
-
- pkey_dh_ctrl,
- pkey_dh_ctrl_str
-
- };
-
-const EVP_PKEY_METHOD dhx_pkey_meth =
- {
- EVP_PKEY_DHX,
- EVP_PKEY_FLAG_AUTOARGLEN,
- pkey_dh_init,
- pkey_dh_copy,
- pkey_dh_cleanup,
-
- 0,
- pkey_dh_paramgen,
-
- 0,
- pkey_dh_keygen,
-
- 0,
- 0,
-
- 0,
- 0,
-
- 0,0,
-
- 0,0,0,0,
-
- 0,0,
-
- 0,0,
-
- 0,
- pkey_dh_derive,
-
- pkey_dh_ctrl,
- pkey_dh_ctrl_str
+{
+ DH *dh = NULL;
+ if (ctx->pkey == NULL) {
+ DHerr(DH_F_PKEY_DH_KEYGEN, DH_R_NO_PARAMETERS_SET);
+ return 0;
+ }
+ dh = DH_new();
+ if (dh == NULL)
+ return 0;
+ EVP_PKEY_assign(pkey, ctx->pmeth->pkey_id, dh);
+ /* Note: if error return, pkey is freed by parent routine */
+ if (!EVP_PKEY_copy_parameters(pkey, ctx->pkey))
+ return 0;
+ return DH_generate_key(pkey->pkey.dh);
+}
+
+static int pkey_dh_derive(EVP_PKEY_CTX *ctx, unsigned char *key,
+ size_t *keylen)
+{
+ int ret;
+ DH *dh;
+ DH_PKEY_CTX *dctx = ctx->data;
+ BIGNUM *dhpub;
+ if (!ctx->pkey || !ctx->peerkey) {
+ DHerr(DH_F_PKEY_DH_DERIVE, DH_R_KEYS_NOT_SET);
+ return 0;
+ }
+ dh = ctx->pkey->pkey.dh;
+ dhpub = ctx->peerkey->pkey.dh->pub_key;
+ if (dctx->kdf_type == EVP_PKEY_DH_KDF_NONE) {
+ if (key == NULL) {
+ *keylen = DH_size(dh);
+ return 1;
+ }
+ ret = DH_compute_key(key, dhpub, dh);
+ if (ret < 0)
+ return ret;
+ *keylen = ret;
+ return 1;
+ }
+#ifndef OPENSSL_NO_CMS
+ else if (dctx->kdf_type == EVP_PKEY_DH_KDF_X9_42) {
+
+ unsigned char *Z = NULL;
+ size_t Zlen = 0;
+ if (!dctx->kdf_outlen || !dctx->kdf_oid)
+ return 0;
+ if (key == NULL) {
+ *keylen = dctx->kdf_outlen;
+ return 1;
+ }
+ if (*keylen != dctx->kdf_outlen)
+ return 0;
+ ret = 0;
+ Zlen = DH_size(dh);
+ Z = OPENSSL_malloc(Zlen);
+ if (Z == NULL) {
+ goto err;
+ }
+ if (DH_compute_key_padded(Z, dhpub, dh) <= 0)
+ goto err;
+ if (!DH_KDF_X9_42(key, *keylen, Z, Zlen, dctx->kdf_oid,
+ dctx->kdf_ukm, dctx->kdf_ukmlen, dctx->kdf_md))
+ goto err;
+ *keylen = dctx->kdf_outlen;
+ ret = 1;
+ err:
+ OPENSSL_clear_free(Z, Zlen);
+ return ret;
+ }
+#endif
+ return 0;
+}
+
+const EVP_PKEY_METHOD dh_pkey_meth = {
+ EVP_PKEY_DH,
+ 0,
+ pkey_dh_init,
+ pkey_dh_copy,
+ pkey_dh_cleanup,
+
+ 0,
+ pkey_dh_paramgen,
+
+ 0,
+ pkey_dh_keygen,
+
+ 0,
+ 0,
+
+ 0,
+ 0,
+
+ 0, 0,
+
+ 0, 0, 0, 0,
+
+ 0, 0,
+
+ 0, 0,
+
+ 0,
+ pkey_dh_derive,
+
+ pkey_dh_ctrl,
+ pkey_dh_ctrl_str
+};
+
+const EVP_PKEY_METHOD dhx_pkey_meth = {
+ EVP_PKEY_DHX,
+ 0,
+ pkey_dh_init,
+ pkey_dh_copy,
+ pkey_dh_cleanup,
+
+ 0,
+ pkey_dh_paramgen,
+
+ 0,
+ pkey_dh_keygen,
+
+ 0,
+ 0,
+
+ 0,
+ 0,
+
+ 0, 0,
+
+ 0, 0, 0, 0,
+
+ 0, 0,
+
+ 0, 0,
+
+ 0,
+ pkey_dh_derive,