text: /*
   * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
   *
   * SPDX-License-Identifier: BSD-3-Clause
   */
  
  #ifndef RSA_H
  #define RSA_H
  
  /*
   * All the includes that are needed for code using this module to
   * compile correctly should be #included here.
   */
  
  #ifdef __cplusplus
  extern "C"
  {
  #endif
  
  #include "cc_pal_types.h"
  
  /************************ Defines ******************************/
  
  /* the modulus size ion bits */
  #define RSA_MOD_SIZE_IN_BITS				2048UL
  #define RSA_MOD_SIZE_IN_BYTES				(CALC_FULL_BYTES(RSA_MOD_SIZE_IN_BITS))
  #define RSA_MOD_SIZE_IN_WORDS				(CALC_FULL_32BIT_WORDS(RSA_MOD_SIZE_IN_BITS))
  #define RSA_MOD_SIZE_IN_256BITS				(RSA_MOD_SIZE_IN_WORDS/8)
  #define RSA_EXP_SIZE_IN_BITS				17UL
  #define RSA_EXP_SIZE_IN_BYTES				(CALC_FULL_BYTES(RSA_EXP_SIZE_IN_BITS))
  
  /* size of buffer for Barrett modulus tag NP, used in PKA algorithms */
  #define RSA_HW_PKI_PKA_BARRETT_MOD_TAG_SIZE_IN_BITS	132
  #define RSA_HW_PKI_PKA_BARRETT_MOD_TAG_SIZE_IN_BYTES	(CALC_FULL_BYTES(RSA_HW_PKI_PKA_BARRETT_MOD_TAG_SIZE_IN_BITS))
  #define RSA_HW_PKI_PKA_BARRETT_MOD_TAG_SIZE_IN_WORDS	(CALC_FULL_32BIT_WORDS(RSA_HW_PKI_PKA_BARRETT_MOD_TAG_SIZE_IN_BITS))
  
  /*
   * @brief The RSA_CalcNp calculates Np value and saves it into Np_ptr:
   *
   *
  
   * @param[in] hwBaseAddress -	HW base address. Relevant for HW
   *				implementation, for SW it is ignored.
   * @N_ptr[in]               -	The pointer to the modulus buffer.
   * @Np_ptr[out]             -	pointer to Np vector buffer. Its size must be >= 160.
   */
  void RSA_CalcNp(unsigned long hwBaseAddress,
  		uint32_t *N_ptr,
  		uint32_t *Np_ptr);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif
  