Import only named params into FIPS module

Fixes #17978

Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/17998)

(cherry picked from commit 638c3a28af45bd81a1c90b81efd8e10449eace1b)

1 files changed, 18 insertions, 7 deletions

diff --git a/crypto/ec/ec_lib.c b/crypto/ec/ec_lib.c
index 2ee8284eaf..5366e2144b 100644
--- a/crypto/ec/ec_lib.c
+++ b/crypto/ec/ec_lib.c
@@ -1387,6 +1387,7 @@ int EC_GROUP_get_pentanomial_basis(const EC_GROUP *group, unsigned int *k1,
 }
 #endif
 
+#ifndef FIPS_MODULE
 /*
  * Check if the explicit parameters group matches any built-in curves.
  *
@@ -1424,7 +1425,7 @@ static EC_GROUP *ec_group_explicit_to_named(const EC_GROUP *group,
          * parameters with one created from a named group.
          */
 
-#ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
+# ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
         /*
          * NID_wap_wsg_idm_ecid_wtls12 and NID_secp224r1 are both aliases for
          * the same curve, we prefer the SECP nid when matching explicit
@@ -1432,7 +1433,7 @@ static EC_GROUP *ec_group_explicit_to_named(const EC_GROUP *group,
          */
         if (curve_name_nid == NID_wap_wsg_idm_ecid_wtls12)
             curve_name_nid = NID_secp224r1;
-#endif /* !def(OPENSSL_NO_EC_NISTP_64_GCC_128) */
+# endif /* !def(OPENSSL_NO_EC_NISTP_64_GCC_128) */
 
         ret_group = EC_GROUP_new_by_curve_name_ex(libctx, propq, curve_name_nid);
         if (ret_group == NULL)
@@ -1467,6 +1468,7 @@ err:
     EC_GROUP_free(ret_group);
     return NULL;
 }
+#endif /* FIPS_MODULE */
 
 static EC_GROUP *group_new_from_name(const OSSL_PARAM *p,
                                      OSSL_LIB_CTX *libctx, const char *propq)
@@ -1536,9 +1538,13 @@ int ossl_ec_group_set_params(EC_GROUP *group, const OSSL_PARAM params[])
 EC_GROUP *EC_GROUP_new_from_params(const OSSL_PARAM params[],
                                    OSSL_LIB_CTX *libctx, const char *propq)
 {
-    const OSSL_PARAM *ptmp, *pa, *pb;
+    const OSSL_PARAM *ptmp;
+    EC_GROUP *group = NULL;
+
+#ifndef FIPS_MODULE
+    const OSSL_PARAM *pa, *pb;
     int ok = 0;
-    EC_GROUP *group = NULL, *named_group = NULL;
+    EC_GROUP *named_group = NULL;
     BIGNUM *p = NULL, *a = NULL, *b = NULL, *order = NULL, *cofactor = NULL;
     EC_POINT *point = NULL;
     int field_bits = 0;
@@ -1546,6 +1552,7 @@ EC_GROUP *EC_GROUP_new_from_params(const OSSL_PARAM params[],
     BN_CTX *bnctx = NULL;
     const unsigned char *buf = NULL;
     int encoding_flag = -1;
+#endif
 
     /* This is the simple named group case */
     ptmp = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_GROUP_NAME);
@@ -1559,6 +1566,9 @@ EC_GROUP *EC_GROUP_new_from_params(const OSSL_PARAM params[],
         }
         return group;
     }
+#ifdef FIPS_MODULE
+    return NULL;
+#else
     /* If it gets here then we are trying explicit parameters */
     bnctx = BN_CTX_new_ex(libctx);
     if (bnctx == NULL) {
@@ -1623,10 +1633,10 @@ EC_GROUP *EC_GROUP_new_from_params(const OSSL_PARAM params[],
         /* create the EC_GROUP structure */
         group = EC_GROUP_new_curve_GFp(p, a, b, bnctx);
     } else {
-#ifdef OPENSSL_NO_EC2M
+# ifdef OPENSSL_NO_EC2M
         ERR_raise(ERR_LIB_EC, EC_R_GF2M_NOT_SUPPORTED);
         goto err;
-#else
+# else
         /* create the EC_GROUP structure */
         group = EC_GROUP_new_curve_GF2m(p, a, b, NULL);
         if (group != NULL) {
@@ -1636,7 +1646,7 @@ EC_GROUP *EC_GROUP_new_from_params(const OSSL_PARAM params[],
                 goto err;
             }
         }
-#endif /* OPENSSL_NO_EC2M */
+# endif /* OPENSSL_NO_EC2M */
     }
 
     if (group == NULL) {
@@ -1733,4 +1743,5 @@ EC_GROUP *EC_GROUP_new_from_params(const OSSL_PARAM params[],
     BN_CTX_free(bnctx);
 
     return group;
+#endif /* FIPS_MODULE */
 }