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bignum_mod_raw: Updated documentation for mbedtls_mpi_mod_raw_mul

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Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
This commit is contained in:
Minos Galanakis 2023-06-16 14:28:36 +01:00
parent fee70a5342
commit 7b1093240c
1 changed files with 9 additions and 0 deletions
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9
library/bignum_mod_raw.c
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@ -137,8 +137,17 @@ void mbedtls_mpi_mod_raw_mul(mbedtls_mpi_uint *X,
N->rep.mont.mm, T);
break;
case MBEDTLS_MPI_MOD_REP_OPT_RED:
/* Standard (A * B) multiplication stored into pre-allocated T
* buffer of fixed size of ((2N + 1) * ciL) bytes.
* The space is not fully filled by MBEDTLS_MPI_MOD_REP_OPT_RED
* which requires at max (2N * ciL) bytes. */
mbedtls_mpi_core_mul(T, A, N->limbs, B, N->limbs);
/* Optimised Reduction */
(*N->rep.ored.modp)(T, T_limbs);
/* Convert back to cannonical representation */
mbedtls_mpi_mod_raw_fix_quasi_reduction(T, N);
memcpy(X, T, N->limbs * sizeof(mbedtls_mpi_uint));
break;