text: /**************************************************************************/
  /*                                                                        */
  /*       Copyright (c) Microsoft Corporation. All rights reserved.        */
  /*                                                                        */
  /*       This software is licensed under the Microsoft Software License   */
  /*       Terms for Microsoft Azure RTOS. Full text of the license can be  */
  /*       found in the LICENSE file at https://aka.ms/AzureRTOS_EULA       */
  /*       and in the root directory of this software.                      */
  /*                                                                        */
  /**************************************************************************/
  
  
  /**************************************************************************/
  /**************************************************************************/
  /**                                                                       */
  /** NetX Secure Component                                                 */
  /**                                                                       */
  /**    Transport Layer Security (TLS)                                     */
  /**                                                                       */
  /**************************************************************************/
  /**************************************************************************/
  
  #define NX_SECURE_SOURCE_CODE
  
  #include "nx_secure_tls.h"
  
  /**************************************************************************/
  /*                                                                        */
  /*  FUNCTION                                               RELEASE        */
  /*                                                                        */
  /*    _nx_secure_tls_ciphersuite_lookup                   PORTABLE C      */
  /*                                                           6.0          */
  /*  AUTHOR                                                                */
  /*                                                                        */
  /*    Timothy Stapko, Microsoft Corporation                               */
  /*                                                                        */
  /*  DESCRIPTION                                                           */
  /*                                                                        */
  /*    This function returns data about a selected ciphersuite for use     */
  /*    in various TLS internal functions, such as the ciphers used and     */
  /*    associated key sizes.                                               */
  /*                                                                        */
  /*  INPUT                                                                 */
  /*                                                                        */
  /*    tls_session                           TLS session control block     */
  /*    ciphersuite                           Ciphersuite value             */
  /*    info                                  Pointer to ciphersuite info   */
  /*                                            structure (output)          */
  /*                                                                        */
  /*  OUTPUT                                                                */
  /*                                                                        */
  /*    status                                Completion status             */
  /*                                                                        */
  /*  CALLS                                                                 */
  /*                                                                        */
  /*    None                                                                */
  /*                                                                        */
  /*  CALLED BY                                                             */
  /*                                                                        */
  /*    _nx_secure_dtls_process_clienthello   Process ClientHello           */
  /*    _nx_secure_tls_process_clienthello    Process ClientHello           */
  /*    _nx_secure_tls_process_serverhello    Process ServerHello           */
  /*                                                                        */
  /*  RELEASE HISTORY                                                       */
  /*                                                                        */
  /*    DATE              NAME                      DESCRIPTION             */
  /*                                                                        */
  /*  05-19-2020     Timothy Stapko           Initial Version 6.0           */
  /*                                                                        */
  /**************************************************************************/
  UINT _nx_secure_tls_ciphersuite_lookup(NX_SECURE_TLS_SESSION *tls_session, UINT ciphersuite,
                                         NX_SECURE_TLS_CIPHERSUITE_INFO const **info)
  {
  USHORT                          index;
  NX_SECURE_TLS_CIPHERSUITE_INFO *cipher_table;
  USHORT                          cipher_table_size;
  
      cipher_table = tls_session -> nx_secure_tls_crypto_table -> nx_secure_tls_ciphersuite_lookup_table;
      cipher_table_size = tls_session -> nx_secure_tls_crypto_table -> nx_secure_tls_ciphersuite_lookup_table_size;
  
      /* The number of ciphersuites is very small so a linear search should be fine. */
      for (index = 0; index < cipher_table_size; ++index)
      {
          /* See if the ciphersuite is supported. */
          if (cipher_table[index].nx_secure_tls_ciphersuite == ciphersuite)
          {
              *info = &cipher_table[index];
              return(NX_SUCCESS);
          }
      }
  
      /* No ciphersuite found, suite unknown. */
      return(NX_SECURE_TLS_UNKNOWN_CIPHERSUITE);
  }
  
  