/*
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* Header file for SHA hardware acceleration
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*
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* Copyright (c) 2012 Samsung Electronics
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __HW_SHA_H
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#define __HW_SHA_H
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#include <hash.h>
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/**
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* Computes hash value of input pbuf using h/w acceleration
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*
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* @param in_addr A pointer to the input buffer
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* @param bufleni Byte length of input buffer
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* @param out_addr A pointer to the output buffer. When complete
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* 32 bytes are copied to pout[0]...pout[31]. Thus, a user
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* should allocate at least 32 bytes at pOut in advance.
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* @param chunk_size chunk size for sha256
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*/
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void hw_sha256(const uchar * in_addr, uint buflen,
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uchar * out_addr, uint chunk_size);
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/**
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* Computes hash value of input pbuf using h/w acceleration
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*
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* @param in_addr A pointer to the input buffer
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* @param bufleni Byte length of input buffer
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* @param out_addr A pointer to the output buffer. When complete
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* 32 bytes are copied to pout[0]...pout[31]. Thus, a user
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* should allocate at least 32 bytes at pOut in advance.
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* @param chunk_size chunk_size for sha1
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*/
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void hw_sha1(const uchar * in_addr, uint buflen,
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uchar * out_addr, uint chunk_size);
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/*
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* Create the context for sha progressive hashing using h/w acceleration
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*
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* @algo: Pointer to the hash_algo struct
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* @ctxp: Pointer to the pointer of the context for hashing
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* @return 0 if ok, -ve on error
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*/
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int hw_sha_init(struct hash_algo *algo, void **ctxp);
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/*
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* Update buffer for sha progressive hashing using h/w acceleration
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*
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* The context is freed by this function if an error occurs.
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*
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* @algo: Pointer to the hash_algo struct
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* @ctx: Pointer to the context for hashing
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* @buf: Pointer to the buffer being hashed
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* @size: Size of the buffer being hashed
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* @is_last: 1 if this is the last update; 0 otherwise
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* @return 0 if ok, -ve on error
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*/
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int hw_sha_update(struct hash_algo *algo, void *ctx, const void *buf,
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unsigned int size, int is_last);
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/*
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* Copy sha hash result at destination location
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*
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* The context is freed after completion of hash operation or after an error.
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*
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* @algo: Pointer to the hash_algo struct
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* @ctx: Pointer to the context for hashing
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* @dest_buf: Pointer to the destination buffer where hash is to be copied
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* @size: Size of the buffer being hashed
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* @return 0 if ok, -ve on error
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*/
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int hw_sha_finish(struct hash_algo *algo, void *ctx, void *dest_buf,
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int size);
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#endif
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