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Diffstat (limited to 'libopencm3/lib/stm32/f4/crypto.c')
-rw-r--r-- | libopencm3/lib/stm32/f4/crypto.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/libopencm3/lib/stm32/f4/crypto.c b/libopencm3/lib/stm32/f4/crypto.c new file mode 100644 index 0000000..651f365 --- /dev/null +++ b/libopencm3/lib/stm32/f4/crypto.c @@ -0,0 +1,66 @@ +/** @defgroup crypto_file CRYPTO + * + * @ingroup STM32F4xx + * + * @brief <b>libopencm3 STM32F4xx CRYPTO</b> + * + * @version 1.0.0 + * + * @date 18 Jun 2013 + * + */ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2011 Stephen Caudle <scaudle@doceme.com> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <libopencm3/stm32/crypto.h> + +/**@{*/ + +/*---------------------------------------------------------------------------*/ + +/** @brief Set the MAC algorithm + */ +void crypto_set_mac_algorithm(enum crypto_mode_mac mode) +{ + crypto_set_algorithm((enum crypto_mode) mode); +} + +/** + * @brief Swap context + * + *@param[in] buf uint32_t Memory space for swap (16 items length) + */ +void crypto_context_swap(uint32_t *buf) +{ + int i; + /* Apply exact order of ? */ + for (i = 0; i < 8; i++) { + uint32_t save = *buf; + *buf++ = CRYP_CSGCMCCMR(i); + CRYP_CSGCMCCMR(i) = save; + }; + + for (i = 0; i < 8; i++) { + uint32_t save = *buf; + *buf++ = CRYP_CSGCMR(i); + CRYP_CSGCMCCMR(i) = save; + }; +} + +/**@}*/ |