Make the EC code available from inside the FIPS provider

[openssl.git] / crypto / ec / ec_check.c

diff --git a/crypto/ec/ec_check.c b/crypto/ec/ec_check.c
index 09e3deb048c3921c904dd2772c00fdc3285a4f05..974fcb24462d9789c974632b5980202023f4304e 100644 (file)
--- a/crypto/ec/ec_check.c
+++ b/crypto/ec/ec_check.c
@@ -10,18 +10,42 @@
 #include "ec_lcl.h"
 #include <openssl/err.h>
 
-int EC_GROUP_check_named_curve(const EC_GROUP *group, int nist_only)
+int EC_GROUP_check_named_curve(const EC_GROUP *group, int nist_only,
+                               BN_CTX *ctx)
 {
-    int nid;
+    int nid = NID_undef;
+#ifndef FIPS_MODE
+    BN_CTX *new_ctx = NULL;
+
+    if (ctx == NULL) {
+        ctx = new_ctx = BN_CTX_new();
+        if (ctx == NULL) {
+            ECerr(EC_F_EC_GROUP_CHECK_NAMED_CURVE, ERR_R_MALLOC_FAILURE);
+            goto err;
+        }
+    }
+#endif
 
-    nid = ec_curve_nid_from_params(group);
+    nid = ec_curve_nid_from_params(group, ctx);
     if (nid > 0 && nist_only && EC_curve_nid2nist(nid) == NULL)
-        nid = 0;
+        nid = NID_undef;
+
+#ifndef FIPS_MODE
+ err:
+    BN_CTX_free(ctx);
+#endif
     return nid;
 }
 
 int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx)
 {
+#ifdef FIPS_MODE
+    /*
+    * ECC domain parameter validation.
+    * See SP800-56A R3 5.5.2 "Assurances of Domain-Parameter Validity" Part 1b.
+    */
+    return EC_GROUP_check_named_curve(group, 1, ctx) >= 0 ? 1 : 0;
+#else
     int ret = 0;
     const BIGNUM *order;
     BN_CTX *new_ctx = NULL;
@@ -84,4 +108,5 @@ int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx)
     BN_CTX_free(new_ctx);
     EC_POINT_free(point);
     return ret;
+#endif /* FIPS_MODE */
 }