Fix an incorrect comment about fix_negative
We're subtracting multiples of 2^bits, not 2^(bits+32).
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/library/ecp_curves.c b/library/ecp_curves.c
index b04596b..396734d 100644
--- a/library/ecp_curves.c
+++ b/library/ecp_curves.c
@@ -1048,13 +1048,13 @@
/*
* If the result is negative, we get it in the form
- * c * 2^(bits + 32) + N, with c negative and N positive shorter than 'bits'
+ * c * 2^bits + N, with c negative and N positive shorter than 'bits'
*/
static inline int fix_negative( mbedtls_mpi *N, signed char c, mbedtls_mpi *C, size_t bits )
{
int ret;
- /* C = - c * 2^(bits + 32) */
+ /* C = - c * 2^bits */
#if !defined(MBEDTLS_HAVE_INT64)
((void) bits);
#else