99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
/** @defgroup crypto_defines CRYPTO Defines
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*
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* @brief <b>Defined constants and Types for the STM32F4xx Crypto Coprocessor
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*
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* @ingroup STM32F4xx_defines
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*
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* @version 1.0.0
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*
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* @date 22 Jun 2013
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*
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* LGPL License Terms @ref lgpl_license
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*/
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/*
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* This file is part of the libopencm3 project.
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LIBOPENCM3_CRYPTO_H
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#define LIBOPENCM3_CRYPTO_H
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#include <libopencm3/stm32/memorymap.h>
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#include <libopencm3/stm32/common/crypto_common_f24.h>
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/**@{*/
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/* --- CRYP registers ------------------------------------------------------ */
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/** @defgroup crypto_defines_registers Registers (for F42xx or F43xx only)
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*
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* @brief Register access to the CRYP controller. Registers for F42xx and 43xx
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*
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* @ingroup crypto_defines
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*/
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/**@{*/
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/* CRYP_CSGCMCCMxR: Crypto context registers CCM mode, i=0-7*/
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#define CRYP_CSGCMCCMR(i) MMIO32(CRYP_BASE + 0x50 + (i) * 4)
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/* CRYP_CSGCMxR: Crypto context registers all modes, i=0-7*/
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#define CRYP_CSGCMR(i) MMIO32(CRYP_BASE + 0x70 + (i) * 4)
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/* --- CRYP_CR values ------------------------------------------------------ */
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/* Only for part STM32F42xx and STM32F43xx: */
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/* GCM_CMPH: GCM or CCM phase state */
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#define CRYP_CR_GCM_CMPH_SHIFT 16
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#define CRYP_CR_GCM_CMPH (3 << CRYP_CR_GCM_CMPH_SHIFT)
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#define CRYP_CR_GCM_CMPH_INIT (0 << CRYP_CR_GCM_CMPH_SHIFT)
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#define CRYP_CR_GCM_CMPH_HEADER (1 << CRYP_CR_GCM_CMPH_SHIFT)
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#define CRYP_CR_GCM_CMPH_PAYLOAD (2 << CRYP_CR_GCM_CMPH_SHIFT)
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#define CRYP_CR_GCM_CMPH_FINAL (3 << CRYP_CR_GCM_CMPH_SHIFT)
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/* ALGOMODE3: Algorithm mode, fourth bit */
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#define CRYP_CR_ALGOMODE3 (1 << 19)
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/**@}*/
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/** @defgroup crypto_api API (for F42xx or F43xx only)
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*
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* @brief API for the CRYP controller.
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*
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* @warning Only for F42xx and 43xx
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*
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* @ingroup crypto_defines
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*/
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/**@{*/
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enum crypto_mode_mac {
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ENCRYPT_GCM = CRYP_CR_ALGOMODE_TDES_ECB | CRYP_CR_ALGOMODE3,
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ENCRYPT_CCM = CRYP_CR_ALGOMODE_TDES_CBC | CRYP_CR_ALGOMODE3,
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DECRYPT_GCM = CRYP_CR_ALGOMODE_TDES_ECB | CRYP_CR_ALGOMODE3 |
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CRYP_CR_ALGODIR,
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DECRYPT_CCM = CRYP_CR_ALGOMODE_TDES_CBC | CRYP_CR_ALGOMODE3 |
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CRYP_CR_ALGODIR,
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};
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BEGIN_DECLS
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void crypto_context_swap(uint32_t *buf);
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void crypto_set_mac_algorithm(enum crypto_mode_mac mode);
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END_DECLS
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/**@}*/
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/**@}*/
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#endif
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