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/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2025-present Eclipse ThreadX Contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** NetX Secure Component */
/** */
/** Transport Layer Security (TLS) */
/** */
/**************************************************************************/
/**************************************************************************/
#define NX_SECURE_SOURCE_CODE
#include "nx_secure_tls.h"
#include "nx_secure_x509.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nx_secure_remote_certificate_verify PORTABLE C */
/* 6.4.3 */
/* AUTHOR */
/* */
/* Yanwu Cai, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function verifies the authenticity of a certificate provided */
/* by the remote host by checking its digital signature against the */
/* trusted store, checking the certificate's validity period, and */
/* optionally checking the Common Name against the Top-Level Domain */
/* (TLD) name used to access the remote host. */
/* */
/* INPUT */
/* */
/* store Pointer to certificate store */
/* certificate Pointer to cert chain */
/* current_time Current timestamp */
/* */
/* OUTPUT */
/* */
/* status Certificate validity status */
/* */
/* CALLS */
/* */
/* _nx_secure_x509_certificate_chain_verify */
/* Verify cert against stores */
/* */
/* CALLED BY */
/* */
/* _nx_secure_tls_remote_certificate_verify */
/* Verify the server certificate */
/* */
/**************************************************************************/
UINT _nx_secure_remote_certificate_verify(NX_SECURE_X509_CERTIFICATE_STORE *store,
NX_SECURE_X509_CERT *certificate, ULONG current_time)
{
UINT status;
/* Now verify our remote certificate chain. If the certificate can be linked to an issuer in the trusted store
through an issuer chain, this function will return NX_SUCCESS. */
status = _nx_secure_x509_certificate_chain_verify(store, certificate, current_time);
if (status != NX_SUCCESS)
{
/* Translate some X.509 return values into TLS return values. NX_SECURE_X509_CERTIFICATE_NOT_FOUND is removed
as _nx_secure_x509_certificate_chain_verify() will not return this value. */
switch (status)
{
case NX_SECURE_X509_UNSUPPORTED_PUBLIC_CIPHER:
return(NX_SECURE_TLS_UNSUPPORTED_PUBLIC_CIPHER);
case NX_SECURE_X509_UNKNOWN_CERT_SIG_ALGORITHM:
return(NX_SECURE_TLS_UNKNOWN_CERT_SIG_ALGORITHM);
case NX_SECURE_X509_CERTIFICATE_SIG_CHECK_FAILED:
return(NX_SECURE_TLS_CERTIFICATE_SIG_CHECK_FAILED);
#ifndef NX_SECURE_ALLOW_SELF_SIGNED_CERTIFICATES
case NX_SECURE_X509_INVALID_SELF_SIGNED_CERT:
return(NX_SECURE_TLS_INVALID_SELF_SIGNED_CERT);
#endif
case NX_SECURE_X509_ISSUER_CERTIFICATE_NOT_FOUND:
return(NX_SECURE_TLS_ISSUER_CERTIFICATE_NOT_FOUND);
case NX_SECURE_X509_MISSING_CRYPTO_ROUTINE:
return(NX_SECURE_TLS_MISSING_CRYPTO_ROUTINE);
default:
return(status);
}
}
return(status);
}
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