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Use size_t cast for pointer subtractions

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman
2023-11-04 12:20:09 +00:00
parent effdfe7409
commit e4a6f5a7ec
26 changed files with 99 additions and 98 deletions
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20
library/ecjpake.c
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@ -168,7 +168,7 @@ static int ecjpake_write_len_point(unsigned char **p,
}
ret = mbedtls_ecp_point_write_binary(grp, P, pf,
&len, *p + 4, end - (*p + 4));
&len, *p + 4, (size_t) (end - (*p + 4)));
if (ret != 0) {
return ret;
}
@ -226,7 +226,7 @@ static int ecjpake_hash(const mbedtls_md_type_t md_type,
/* Compute hash */
MBEDTLS_MPI_CHK(mbedtls_ecjpake_compute_hash(md_type,
buf, p - buf, hash));
buf, (size_t) (p - buf), hash));
/* Turn it into an integer mod n */
MBEDTLS_MPI_CHK(mbedtls_mpi_read_binary(h, hash,
@ -269,7 +269,7 @@ static int ecjpake_zkp_read(const mbedtls_md_type_t md_type,
return MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
}
MBEDTLS_MPI_CHK(mbedtls_ecp_tls_read_point(grp, &V, p, end - *p));
MBEDTLS_MPI_CHK(mbedtls_ecp_tls_read_point(grp, &V, p, (size_t) (end - *p)));
if (end < *p || (size_t) (end - *p) < 1) {
ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
@ -346,7 +346,7 @@ static int ecjpake_zkp_write(const mbedtls_md_type_t md_type,
/* Write it out */
MBEDTLS_MPI_CHK(mbedtls_ecp_tls_write_point(grp, &V,
pf, &len, *p, end - *p));
pf, &len, *p, (size_t) (end - *p)));
*p += len;
len = mbedtls_mpi_size(&h); /* actually r */
@ -392,7 +392,7 @@ static int ecjpake_kkp_read(const mbedtls_md_type_t md_type,
* ECSchnorrZKP zkp;
* } ECJPAKEKeyKP;
*/
MBEDTLS_MPI_CHK(mbedtls_ecp_tls_read_point(grp, X, p, end - *p));
MBEDTLS_MPI_CHK(mbedtls_ecp_tls_read_point(grp, X, p, (size_t) (end - *p)));
if (mbedtls_ecp_is_zero(X)) {
ret = MBEDTLS_ERR_ECP_INVALID_KEY;
goto cleanup;
@ -431,7 +431,7 @@ static int ecjpake_kkp_write(const mbedtls_md_type_t md_type,
MBEDTLS_MPI_CHK(mbedtls_ecp_gen_keypair_base((mbedtls_ecp_group *) grp, G, x, X,
f_rng, p_rng));
MBEDTLS_MPI_CHK(mbedtls_ecp_tls_write_point(grp, X,
pf, &len, *p, end - *p));
pf, &len, *p, (size_t) (end - *p)));
*p += len;
/* Generate and write proof */
@ -504,7 +504,7 @@ static int ecjpake_kkpp_write(const mbedtls_md_type_t md_type,
MBEDTLS_MPI_CHK(ecjpake_kkp_write(md_type, grp, pf, G, xm2, Xb, id,
&p, end, f_rng, p_rng));
*olen = p - buf;
*olen = (size_t) (p - buf);
cleanup:
return ret;
@ -693,7 +693,7 @@ int mbedtls_ecjpake_write_round_two(mbedtls_ecjpake_context *ctx,
goto cleanup;
}
MBEDTLS_MPI_CHK(mbedtls_ecp_tls_write_group(&ctx->grp, &ec_len,
p, end - p));
p, (size_t) (end - p)));
p += ec_len;
}
@ -702,7 +702,7 @@ int mbedtls_ecjpake_write_round_two(mbedtls_ecjpake_context *ctx,
goto cleanup;
}
MBEDTLS_MPI_CHK(mbedtls_ecp_tls_write_point(&ctx->grp, &Xm,
ctx->point_format, &ec_len, p, end - p));
ctx->point_format, &ec_len, p, (size_t) (end - p)));
p += ec_len;
MBEDTLS_MPI_CHK(ecjpake_zkp_write(ctx->md_type, &ctx->grp,
@ -710,7 +710,7 @@ int mbedtls_ecjpake_write_round_two(mbedtls_ecjpake_context *ctx,
&G, &xm, &Xm, ID_MINE,
&p, end, f_rng, p_rng));
*olen = p - buf;
*olen = (size_t) (p - buf);
cleanup:
mbedtls_ecp_point_free(&G);