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Use mbedtls_ct_condition_t in mpi_core_check_zero

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Signed-off-by: Janos Follath <janos.follath@arm.com>
This commit is contained in:
Janos Follath 2024-02-21 11:24:20 +00:00
parent 424c2655b9
commit aec1a868fe
2 changed files with 7 additions and 7 deletions
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6
library/bignum_core.c
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@ -856,8 +856,8 @@ mbedtls_mpi_uint mbedtls_mpi_core_sub_int(mbedtls_mpi_uint *X,
return c;
}
mbedtls_mpi_uint mbedtls_mpi_core_check_zero_ct(const mbedtls_mpi_uint *A,
size_t limbs)
mbedtls_ct_condition_t mbedtls_mpi_core_check_zero_ct(const mbedtls_mpi_uint *A,
size_t limbs)
{
mbedtls_mpi_uint bits = 0;
@ -865,7 +865,7 @@ mbedtls_mpi_uint mbedtls_mpi_core_check_zero_ct(const mbedtls_mpi_uint *A,
bits |= A[i];
}
return bits;
return mbedtls_ct_bool(bits);
}
void mbedtls_mpi_core_to_mont_rep(mbedtls_mpi_uint *X,

8
library/bignum_core.h
View File

@ -662,11 +662,11 @@ mbedtls_mpi_uint mbedtls_mpi_core_sub_int(mbedtls_mpi_uint *X,
* \param[in] A The MPI to test.
* \param limbs Number of limbs in \p A.
*
* \return 0 if `A == 0`
* non-0 (may be any value) if `A != 0`.
* \return MBEDTLS_CT_FALSE if `A == 0`
* MBEDTLS_CT_TRUE if `A != 0`.
*/
mbedtls_mpi_uint mbedtls_mpi_core_check_zero_ct(const mbedtls_mpi_uint *A,
size_t limbs);
mbedtls_ct_condition_t mbedtls_mpi_core_check_zero_ct(const mbedtls_mpi_uint *A,
size_t limbs);
/**
* \brief Returns the number of limbs of working memory required for