1 /* 2 * Copyright (c) 2017-2019, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #ifndef RSA_H 8 #define RSA_H 9 10 /* 11 * All the includes that are needed for code using this module to 12 * compile correctly should be #included here. 13 */ 14 15 #ifdef __cplusplus 16 extern "C" 17 { 18 #endif 19 20 #include "cc_pal_types.h" 21 22 /************************ Defines ******************************/ 23 24 /* the modulus size in bits */ 25 #if (KEY_SIZE == 2048) 26 #define RSA_MOD_SIZE_IN_BITS 2048UL 27 #elif (KEY_SIZE == 3072) 28 #define RSA_MOD_SIZE_IN_BITS 3072UL 29 #else 30 #error Unsupported CryptoCell key size requested 31 #endif 32 33 #define RSA_MOD_SIZE_IN_BYTES (CALC_FULL_BYTES(RSA_MOD_SIZE_IN_BITS)) 34 #define RSA_MOD_SIZE_IN_WORDS (CALC_FULL_32BIT_WORDS(RSA_MOD_SIZE_IN_BITS)) 35 #define RSA_MOD_SIZE_IN_256BITS (RSA_MOD_SIZE_IN_WORDS/8) 36 #define RSA_EXP_SIZE_IN_BITS 17UL 37 #define RSA_EXP_SIZE_IN_BYTES (CALC_FULL_BYTES(RSA_EXP_SIZE_IN_BITS)) 38 39 /* 40 * @brief The RSA_CalcNp calculates Np value and saves it into Np_ptr: 41 * 42 * 43 44 * @param[in] hwBaseAddress - HW base address. Relevant for HW 45 * implementation, for SW it is ignored. 46 * @N_ptr[in] - The pointer to the modulus buffer. 47 * @Np_ptr[out] - pointer to Np vector buffer. Its size must be >= 160. 48 */ 49 void RSA_CalcNp(unsigned long hwBaseAddress, 50 uint32_t *N_ptr, 51 uint32_t *Np_ptr); 52 53 #ifdef __cplusplus 54 } 55 #endif 56 57 #endif 58