Make EVP_PKEY_CTX_[get|set]_group_name work for DH too
[openssl.git] / crypto / ffc / ffc_backend.c
index cde9e43..6e269eb 100644 (file)
@@ -9,6 +9,7 @@
 
 #include <openssl/core_names.h>
 #include "internal/ffc.h"
+#include "internal/sizes.h"
 
 /*
  * The intention with the "backend" source file is to offer backend support
  * implementations alike.
  */
 
-int ffc_fromdata(FFC_PARAMS *ffc, const OSSL_PARAM params[])
+int ffc_params_fromdata(FFC_PARAMS *ffc, const OSSL_PARAM params[])
 {
+    const OSSL_PARAM *prm;
     const OSSL_PARAM *param_p, *param_q, *param_g;
-    BIGNUM *p = NULL, *q = NULL, *g = NULL;
+    BIGNUM *p = NULL, *q = NULL, *g = NULL, *j = NULL;
+    int i;
 
     if (ffc == NULL)
         return 0;
 
+    prm  = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_GROUP_NAME);
+    if (prm != NULL) {
+        if (prm->data_type != OSSL_PARAM_UTF8_STRING)
+            goto err;
+#ifndef OPENSSL_NO_DH
+        /*
+         * In a no-dh build we just go straight to err because we have no
+         * support for this.
+         */
+        if (!ffc_set_group_pqg(ffc, prm->data))
+#endif
+            goto err;
+    }
+
     param_p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_P);
-    param_q = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_Q);
     param_g = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_G);
+    param_q = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_Q);
 
     if ((param_p != NULL && !OSSL_PARAM_get_BN(param_p, &p))
         || (param_q != NULL && !OSSL_PARAM_get_BN(param_q, &q))
         || (param_g != NULL && !OSSL_PARAM_get_BN(param_g, &g)))
         goto err;
 
+    prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_GINDEX);
+    if (prm != NULL) {
+        if (!OSSL_PARAM_get_int(prm, &i))
+            goto err;
+        ffc->gindex =  i;
+    }
+    prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_PCOUNTER);
+    if (prm != NULL) {
+        if (!OSSL_PARAM_get_int(prm, &i))
+            goto err;
+        ffc->pcounter = i;
+    }
+    prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_COFACTOR);
+    if (prm != NULL && !OSSL_PARAM_get_BN(prm, &j))
+        goto err;
+    prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_H);
+    if (prm != NULL) {
+        if (!OSSL_PARAM_get_int(prm, &i))
+            goto err;
+        ffc->h =  i;
+    }
+    prm  = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_SEED);
+    if (prm != NULL) {
+        if (prm->data_type != OSSL_PARAM_OCTET_STRING)
+            goto err;
+        if (!ffc_params_set_seed(ffc, prm->data, prm->data_size))
+            goto err;
+    }
+    prm  = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_VALIDATE_TYPE);
+    if (prm != NULL) {
+        if (prm->data_type != OSSL_PARAM_UTF8_STRING)
+            goto err;
+        ffc_params_set_flags(ffc, ffc_params_flags_from_name(prm->data));
+    }
+    prm = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_DIGEST);
+    if (prm != NULL) {
+        const OSSL_PARAM *p1;
+        const char *props = NULL;
+
+        if (prm->data_type != OSSL_PARAM_UTF8_STRING)
+            goto err;
+        p1 = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_DIGEST_PROPS);
+        if (p1 != NULL) {
+            if (p1->data_type != OSSL_PARAM_UTF8_STRING)
+                goto err;
+        }
+        if (!ffc_set_digest(ffc, prm->data, props))
+            goto err;
+    }
+
     ffc_params_set0_pqg(ffc, p, q, g);
+    ffc_params_set0_j(ffc, j);
     return 1;
 
  err:
+    BN_free(j);
     BN_free(p);
     BN_free(q);
     BN_free(g);