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Handle sizeof(size_t) > sizeof(uint64_t)

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Signed-off-by: Chien Wong <m@xv97.com>
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Chien Wong 2024-01-23 21:38:06 +08:00
parent 858bc65d74
commit 019c2a7817
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GPG Key ID: 5CA58A39FA4122AD
1 changed files with 6 additions and 1 deletions
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7
library/gcm.c
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@ -358,7 +358,12 @@ int mbedtls_gcm_update_ad(mbedtls_gcm_context *ctx,
/* AD is limited to 2^64 bits, ie 2^61 bytes
* Also check for possible overflow */
new_add_len = ctx->add_len + add_len;
#if SIZE_MAX > 0xFFFFFFFFFFFFFFFFULL
if (add_len > 0xFFFFFFFFFFFFFFFFULL) {
return MBEDTLS_ERR_GCM_BAD_INPUT;
}
#endif
new_add_len = ctx->add_len + (uint64_t) add_len;
if (new_add_len < ctx->add_len || new_add_len >> 61 != 0) {
return MBEDTLS_ERR_GCM_BAD_INPUT;
}