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Merge pull request #7933 from tom-cosgrove-arm/add-mbedtls_zeroize_and_free

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Provide and use internal function mbedtls_zeroize_and_free()
This commit is contained in:
Dave Rodgman
2023-08-03 12:56:21 +00:00
committed by GitHub
parent ce64156f6d 52f7e18042
commit 1d4d944e19
24 changed files with 90 additions and 141 deletions
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14
library/bignum.c
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@ -55,10 +55,7 @@
MBEDTLS_INTERNAL_VALIDATE(cond)
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_mpi_zeroize(mbedtls_mpi_uint *v, size_t n)
{
mbedtls_platform_zeroize(v, ciL * n);
}
#define mbedtls_mpi_zeroize_and_free(v, n) mbedtls_zeroize_and_free(v, ciL * (n))
/*
* Initialize one MPI
@ -82,8 +79,7 @@ void mbedtls_mpi_free(mbedtls_mpi *X)
}
if (X->p != NULL) {
mbedtls_mpi_zeroize(X->p, X->n);
mbedtls_free(X->p);
mbedtls_mpi_zeroize_and_free(X->p, X->n);
}
X->s = 1;
@ -110,8 +106,7 @@ int mbedtls_mpi_grow(mbedtls_mpi *X, size_t nblimbs)
if (X->p != NULL) {
memcpy(p, X->p, X->n * ciL);
mbedtls_mpi_zeroize(X->p, X->n);
mbedtls_free(X->p);
mbedtls_mpi_zeroize_and_free(X->p, X->n);
}
/* nblimbs fits in n because we ensure that MBEDTLS_MPI_MAX_LIMBS
@ -160,8 +155,7 @@ int mbedtls_mpi_shrink(mbedtls_mpi *X, size_t nblimbs)
if (X->p != NULL) {
memcpy(p, X->p, i * ciL);
mbedtls_mpi_zeroize(X->p, X->n);
mbedtls_free(X->p);
mbedtls_mpi_zeroize_and_free(X->p, X->n);
}
/* i fits in n because we ensure that MBEDTLS_MPI_MAX_LIMBS