Move GF(p) side channel countermeasure toggles to build.h

Some tweaks for point multiplication using fixed windows.

1 files changed, 16 insertions, 0 deletions

diff --git a/src/build-data/buildh.in b/src/build-data/buildh.in
index 5db2ce566..eaf4181b5 100644
--- a/src/build-data/buildh.in
+++ b/src/build-data/buildh.in
@@ -57,6 +57,22 @@
 * If enabled the ECC implementation will use Montgomery ladder
 * instead of a fixed window implementation.
 */
+#define BOTAN_POINTGFP_BLINDED_MULTIPLY_USE_MONTGOMERY_LADDER 0
+
+/*
+* Set number of bits used to generate mask for blinding the scalar of
+* a point multiplication. Set to zero to disable this side-channel
+* countermeasure.
+*/
+#define BOTAN_POINTGFP_SCALAR_BLINDING_BITS 20
+
+/*
+* Set number of bits used to generate mask for blinding the
+* representation of an ECC point. Set to zero to diable this
+* side-channel countermeasure.
+*/
+#define BOTAN_POINTGFP_RANDOMIZE_BLINDING_BITS 64
+
 #define BOTAN_CURVE_GFP_USE_MONTGOMERY_LADDER 0
 
 /* PK key consistency checking toggles */