Mailing List Archive

* cipher/const-time.c (ct_not_memequal, ct_memequal)
(ct_memmov_cond): Rename these to ...
(_gcry_ct_not_memequal, _gcry_ct_memequal)
(_gcry_ct_memmov_cond): ... these.
* cipher/const-time.h (ct_not_memequal, ct_memequal)
(ct_memmov_cond): Rename these to ...
(_gcry_ct_not_memequal, _gcry_ct_memequal)
(_gcry_ct_memmov_cond): ... these.
(ct_not_memequal, ct_memequal, ct_memmov_cond): New macros.
--

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
---
src/const-time.c | 10 +++++-----
src/const-time.h | 13 +++++++++----
2 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/src/const-time.c b/src/const-time.c
index 908c0ee9..2066d48d 100644
--- a/src/const-time.c
+++ b/src/const-time.c
@@ -36,7 +36,7 @@ volatile unsigned int _gcry_ct_vone = 1;
* 0, otherwise.
*/
unsigned int
-ct_not_memequal (const void *b1, const void *b2, size_t len)
+_gcry_ct_not_memequal (const void *b1, const void *b2, size_t len)
{
const byte *a = b1;
const byte *b = b2;
@@ -60,9 +60,9 @@ ct_not_memequal (const void *b1, const void *b2, size_t len)
* 1, otherwise.
*/
unsigned int
-ct_memequal (const void *b1, const void *b2, size_t len)
+_gcry_ct_memequal (const void *b1, const void *b2, size_t len)
{
- return ct_not_memequal (b1, b2, len) ^ 1;
+ return _gcry_ct_not_memequal (b1, b2, len) ^ 1;
}

/*
@@ -71,8 +71,8 @@ ct_memequal (const void *b1, const void *b2, size_t len)
* DST > SRC, the memory areas must not overlap.
*/
void
-ct_memmov_cond (void *dst, const void *src, size_t len,
- unsigned long op_enable)
+_gcry_ct_memmov_cond (void *dst, const void *src, size_t len,
+ unsigned long op_enable)
{
size_t i;
unsigned char mask;
diff --git a/src/const-time.h b/src/const-time.h
index 3a229ddb..e324dcb7 100644
--- a/src/const-time.h
+++ b/src/const-time.h
@@ -23,6 +23,11 @@
#include "types.h"


+#define ct_not_memequal _gcry_ct_not_memequal
+#define ct_memequal _gcry_ct_memequal
+#define ct_memmov_cond _gcry_ct_memmov_cond
+
+
extern volatile unsigned int _gcry_ct_vzero;
extern volatile unsigned int _gcry_ct_vone;

@@ -68,12 +73,12 @@ ct_not_equal_byte (unsigned char b0, unsigned char b1)
/* Compare byte-arrays of length LEN, return 1 if it's not same, 0
otherwise. We use pointer of void *, so that it can be used with
any structure. */
-unsigned int ct_not_memequal (const void *b1, const void *b2, size_t len);
+unsigned int _gcry_ct_not_memequal (const void *b1, const void *b2, size_t len);

/* Compare byte-arrays of length LEN, return 0 if it's not same, 1
otherwise. We use pointer of void *, so that it can be used with
any structure. */
-unsigned int ct_memequal (const void *b1, const void *b2, size_t len);
+unsigned int _gcry_ct_memequal (const void *b1, const void *b2, size_t len);

/*
* Return A when OP_ENABLED=1
@@ -106,7 +111,7 @@ sexp_null_cond (gcry_sexp_t w, unsigned long op_enable)
* OP_ENABLED=1. When DST <= SRC, the memory areas may overlap. When
* DST > SRC, the memory areas must not overlap.
*/
-void ct_memmov_cond (void *dst, const void *src, size_t len,
- unsigned long op_enable);
+void _gcry_ct_memmov_cond (void *dst, const void *src, size_t len,
+ unsigned long op_enable);

#endif /*GCRY_CONST_TIME_H*/
--
2.40.1


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