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Explicitly cast down from mbedtls_mpi_uint to unsigned char

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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 d55bfe962a
commit 026f555df3
1 changed files with 1 additions and 1 deletions
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2
library/bignum.c
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@ -2051,7 +2051,7 @@ 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. /* 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. * 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. */ * 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; A->p[n] = 0;
} }