Remove flags for disabling constant-time operations.

This removes support for DSA_FLAG_NO_EXP_CONSTTIME, DH_FLAG_NO_EXP_CONSTTIME,
and RSA_FLAG_NO_CONSTTIME flags, making all of these operations unconditionally
constant-time.

Based on the original patch by César Pereid.  ok beck@

1 files changed, 1 insertions, 11 deletions

diff --git a/src/lib/libcrypto/rsa/rsa.h b/src/lib/libcrypto/rsa/rsa.h
index 4045a6cbf3..d240294809 100644
--- a/src/lib/libcrypto/rsa/rsa.h
+++ b/src/lib/libcrypto/rsa/rsa.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: rsa.h,v 1.27 2015/02/14 15:10:39 miod Exp $ */
+/* $OpenBSD: rsa.h,v 1.28 2016/06/30 02:02:06 bcook Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -194,16 +194,6 @@ struct rsa_st {
  */
 #define RSA_FLAG_NO_BLINDING            0x0080
 
-/*
- * The built-in RSA implementation uses constant time operations by default
- * in private key operations, e.g., constant time modular exponentiation,
- * modular inverse without leaking branches, division without leaking branches.
- * This flag disables these constant time operations and results in faster RSA
- * private key operations.
- */
-#define RSA_FLAG_NO_CONSTTIME           0x0100
-
-
 #define EVP_PKEY_CTX_set_rsa_padding(ctx, pad) \
         EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_RSA, -1, EVP_PKEY_CTRL_RSA_PADDING, \
                                 pad, NULL)