Explicitly cast down from mbedtls_mpi_uint to unsigned char

Let code analyzers know that this is deliberate. For example MSVC
warns about the conversion if it's implicit.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine 2020-06-05 10:48:25 +02:00
parent 5f5695077d
commit 6a9433ef34

View file

@ -1963,7 +1963,7 @@ static void mpi_montmul( mbedtls_mpi *A, const mbedtls_mpi *B, const mbedtls_mpi
/* Now d - (2^biL)^n = A - N so d >= (2^biL)^n iff A >= N.
* So we want to copy the result of the subtraction iff d->p[n] != 0.
* Note that d->p[n] is either 0 or 1 since A - N <= N <= (2^biL)^n. */
mpi_safe_cond_assign( n + 1, A->p, d, d[n] );
mpi_safe_cond_assign( n + 1, A->p, d, (unsigned char) d[n] );
A->p[n] = 0;
}