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mpi_core_exp_mod: fix local variable type

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On platforms with size_t different from int, mismatch between size_t and
mpi_uint can cause incorrect results or complaints from the compiler.

Signed-off-by: Janos Follath <janos.follath@arm.com>

mpi_core_exp_mod: Cast local variable explicitly

Signed-off-by: Janos Follath <janos.follath@arm.com>
This commit is contained in:
Janos Follath 2022-11-09 14:30:44 +00:00
parent b6673f0f19
commit bad42c4d0d
1 changed files with 3 additions and 3 deletions
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6
library/bignum_core.c
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@ -618,7 +618,7 @@ int mbedtls_mpi_core_exp_mod( mbedtls_mpi_uint *X,
E += E_len; /* Skip to end of exponent buffer */
wsize = mpi_exp_mod_get_window_size( E_len * biL );
welem = 1 << wsize;
welem = ( (size_t) 1 ) << wsize;
/* Allocate memory pool and set pointers to parts of it */
const size_t table_limbs = welem * n;
@ -663,8 +663,8 @@ int mbedtls_mpi_core_exp_mod( mbedtls_mpi_uint *X,
memcpy( X, Wtbl, n * ciL );
size_t limb_bits_remaining = 0;
mbedtls_mpi_uint window = 0;
size_t window_bits = 0, cur_limb;
mbedtls_mpi_uint cur_limb, window = 0;
size_t window_bits = 0;
while( 1 )
{
size_t window_bits_missing = wsize - window_bits;