60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/*
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* Copyright (c) 2022, STMicroelectronics - All Rights Reserved
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef STM32_SAES_H
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#define STM32_SAES_H
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#define DT_SAES_COMPAT "st,stm32-saes"
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struct stm32_saes_platdata {
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uintptr_t base;
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unsigned long clock_id;
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unsigned int reset_id;
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};
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enum stm32_saes_chaining_mode {
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STM32_SAES_MODE_ECB,
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STM32_SAES_MODE_CBC,
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STM32_SAES_MODE_CTR,
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STM32_SAES_MODE_GCM,
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STM32_SAES_MODE_CCM, /* Not use in TF-A */
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};
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enum stm32_saes_key_selection {
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STM32_SAES_KEY_SOFT,
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STM32_SAES_KEY_DHU, /* Derived HW unique key */
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STM32_SAES_KEY_BH, /* Boot HW key */
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STM32_SAES_KEY_BHU_XOR_BH, /* XOR of DHUK and BHK */
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STM32_SAES_KEY_WRAPPED
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};
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struct stm32_saes_context {
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uintptr_t base;
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uint32_t cr;
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uint32_t assoc_len;
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uint32_t load_len;
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uint32_t key[8]; /* In HW byte order */
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uint32_t iv[4]; /* In HW byte order */
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};
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int stm32_saes_driver_init(void);
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int stm32_saes_init(struct stm32_saes_context *ctx, bool is_decrypt,
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enum stm32_saes_chaining_mode ch_mode, enum stm32_saes_key_selection key_select,
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const void *key, size_t key_len, const void *iv, size_t iv_len);
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int stm32_saes_update(struct stm32_saes_context *ctx, bool last_block,
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uint8_t *data_in, uint8_t *data_out, size_t data_len);
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int stm32_saes_update_assodata(struct stm32_saes_context *ctx, bool last_block,
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uint8_t *data, size_t data_len);
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int stm32_saes_update_load(struct stm32_saes_context *ctx, bool last_block,
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uint8_t *data_in, uint8_t *data_out, size_t data_len);
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int stm32_saes_final(struct stm32_saes_context *ctx, uint8_t *tag, size_t tag_len);
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#endif
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