80 lines
1.6 KiB
C
80 lines
1.6 KiB
C
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/*
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* Copyright (c) 2006-2019, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2019-04-25 tyx the first version
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*/
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#ifndef __HW_RNG_H__
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#define __HW_RNG_H__
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#include <hwcrypto.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct hwcrypto_rng;
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struct hwcrypto_rng_ops
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{
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rt_uint32_t (*update)(struct hwcrypto_rng *ctx); /**< Return a random number */
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};
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/**
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* @brief random context. Hardware driver usage
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*/
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struct hwcrypto_rng
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{
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struct rt_hwcrypto_ctx parent; /**< Inheritance from hardware crypto context */
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const struct hwcrypto_rng_ops *ops; /**< !! Hardware initializes this value when creating context !! */
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};
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/**
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* @brief Creating RNG Context
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*
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* @param device Hardware crypto device
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*
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* @return RNG context
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*/
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struct rt_hwcrypto_ctx *rt_hwcrypto_rng_create(struct rt_hwcrypto_device *device);
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/**
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* @brief Destroy RNG Context
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*
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* @param ctx RNG context
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*/
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void rt_hwcrypto_rng_destroy(struct rt_hwcrypto_ctx *ctx);
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/**
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* @brief Setting RNG default devices
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*
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* @return RT_EOK on success.
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*/
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rt_err_t rt_hwcrypto_rng_default(struct rt_hwcrypto_device *device);
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/**
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* @brief Getting Random Numbers from RNG Context
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*
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* @param ctx RNG context
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*
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* @return Random number
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*/
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rt_uint32_t rt_hwcrypto_rng_update_ctx(struct rt_hwcrypto_ctx *ctx);
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/**
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* @brief Return a random number
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*
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* @return Random number
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*/
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rt_uint32_t rt_hwcrypto_rng_update(void);
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#ifdef __cplusplus
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}
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#endif
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#endif
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