Return security strength for supported DSA parameters: will be used

later.

diff --git a/crypto/dsa/dsa_gen.c b/crypto/dsa/dsa_gen.c
index 593ae55848b31d31f799e558f5640eec4ea51d48..31ce1d49a6b5847c5832ffd4b0acaa02a43ef921 100644 (file)
--- a/crypto/dsa/dsa_gen.c
+++ b/crypto/dsa/dsa_gen.c
@@ -369,18 +369,21 @@ err:
        return ok;
        }
 
-/* Permissible parameter values for (L,N): see FIPS186-3 4.2 */
+/* Security strength of parameter values for (L,N): see FIPS186-3 4.2
+ * and SP800-131A
+ */
+
 
-static int dsa2_check_params(size_t L, size_t N)
+static int dsa2_security_strength(size_t L, size_t N)
        {
        if (L == 1024 && N == 160)
-               return 1;
+               return 80;
        if (L == 2048 && N == 224)
-               return 1;
+               return 112;
        if (L == 2048 && N == 256)
-               return 1;
+               return 112;
        if (L == 3072 && N == 256)
-               return 1;
+               return 112;
        return 0;
        }
 
@@ -414,7 +417,7 @@ int dsa_builtin_paramgen2(DSA *ret, size_t L, size_t N,
            goto err;
            }
 #endif
-       if (!dsa2_check_params(L, N))
+       if (!dsa2_security_strength(L, N))
                {
                DSAerr(DSA_F_DSA_BUILTIN_PARAMGEN2, DSA_R_INVALID_PARAMETERS);
                ok = 0;