Prepare to provide DSA_security_bits()

ok beck jsing

1 files changed, 10 insertions, 1 deletions

diff --git a/src/lib/libcrypto/dsa/dsa_lib.c b/src/lib/libcrypto/dsa/dsa_lib.c
index 1369c6f745..949722b734 100644
--- a/src/lib/libcrypto/dsa/dsa_lib.c
+++ b/src/lib/libcrypto/dsa/dsa_lib.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: dsa_lib.c,v 1.34 2022/01/14 08:29:06 tb Exp $ */
+/* $OpenBSD: dsa_lib.c,v 1.35 2022/06/27 12:28:46 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -260,6 +260,15 @@ DSA_get_ex_data(DSA *d, int idx)
         return CRYPTO_get_ex_data(&d->ex_data, idx);
 }
 
+int
+DSA_security_bits(const DSA *d)
+{
+        if (d->p == NULL || d->q == NULL)
+                return -1;
+
+        return BN_security_bits(BN_num_bits(d->p), BN_num_bits(d->q));
+}
+
 #ifndef OPENSSL_NO_DH
 DH *
 DSA_dup_DH(const DSA *r)