nx_secure/src/nxe_secure_x509_key_usage_extension_parse.c


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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                                                 */
/**                                                                       */
/**    X.509 Digital Certificates                                         */
/**                                                                       */
/**************************************************************************/
/**************************************************************************/

#define NX_SECURE_SOURCE_CODE

#include "nx_secure_x509.h"

/* Bring in externs for caller checking code.  */

NX_SECURE_CALLER_CHECKING_EXTERNS


/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _nxe_secure_x509_key_usage_extension_parse          PORTABLE C      */
/*                                                           6.4.3        */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Timothy Stapko, Microsoft Corporation                               */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This function checks for errors in the call to get the KeyUsage     */
/*    extension from an X.509 certificate.                                */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    certificate                           Pointer to X.509 certificate  */
/*    bitfield                              keyUsage bitfield return      */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    status                                Completion status             */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    _nx_secure_x509_key_usage_extension_parse                           */
/*                                          Actual KeyUsage extension get */
/*                                            call                        */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    Application Code                                                    */
/*                                                                        */
/**************************************************************************/
UINT _nxe_secure_x509_key_usage_extension_parse(NX_SECURE_X509_CERT *certificate, USHORT *bitfield)
{
UINT status;

    if (certificate == NX_CRYPTO_NULL || bitfield == NX_CRYPTO_NULL)
    {
#ifdef NX_CRYPTO_STANDALONE_ENABLE
        return(NX_CRYPTO_PTR_ERROR);
#else
        return(NX_PTR_ERROR);
#endif /* NX_CRYPTO_STANDALONE_ENABLE */
    }

    /* Check for appropriate caller.  */
    NX_THREADS_ONLY_CALLER_CHECKING

    /* The actual call. */
    status = _nx_secure_x509_key_usage_extension_parse(certificate, bitfield);

    return(status);
}