1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Header file for SHA hardware acceleration 4 * 5 * Copyright (c) 2012 Samsung Electronics 6 */ 7 #ifndef __HW_SHA_H 8 #define __HW_SHA_H 9 #include <hash.h> 10 11 /** 12 * Computes hash value of input pbuf using h/w acceleration 13 * 14 * @param in_addr A pointer to the input buffer 15 * @param bufleni Byte length of input buffer 16 * @param out_addr A pointer to the output buffer. When complete 17 * 32 bytes are copied to pout[0]...pout[31]. Thus, a user 18 * should allocate at least 32 bytes at pOut in advance. 19 * @param chunk_size chunk size for sha256 20 */ 21 void hw_sha256(const uchar * in_addr, uint buflen, 22 uchar * out_addr, uint chunk_size); 23 24 /** 25 * Computes hash value of input pbuf using h/w acceleration 26 * 27 * @param in_addr A pointer to the input buffer 28 * @param bufleni Byte length of input buffer 29 * @param out_addr A pointer to the output buffer. When complete 30 * 32 bytes are copied to pout[0]...pout[31]. Thus, a user 31 * should allocate at least 32 bytes at pOut in advance. 32 * @param chunk_size chunk_size for sha1 33 */ 34 void hw_sha1(const uchar * in_addr, uint buflen, 35 uchar * out_addr, uint chunk_size); 36 37 /* 38 * Create the context for sha progressive hashing using h/w acceleration 39 * 40 * @algo: Pointer to the hash_algo struct 41 * @ctxp: Pointer to the pointer of the context for hashing 42 * @return 0 if ok, -ve on error 43 */ 44 int hw_sha_init(struct hash_algo *algo, void **ctxp); 45 46 /* 47 * Update buffer for sha progressive hashing using h/w acceleration 48 * 49 * The context is freed by this function if an error occurs. 50 * 51 * @algo: Pointer to the hash_algo struct 52 * @ctx: Pointer to the context for hashing 53 * @buf: Pointer to the buffer being hashed 54 * @size: Size of the buffer being hashed 55 * @is_last: 1 if this is the last update; 0 otherwise 56 * @return 0 if ok, -ve on error 57 */ 58 int hw_sha_update(struct hash_algo *algo, void *ctx, const void *buf, 59 unsigned int size, int is_last); 60 61 /* 62 * Copy sha hash result at destination location 63 * 64 * The context is freed after completion of hash operation or after an error. 65 * 66 * @algo: Pointer to the hash_algo struct 67 * @ctx: Pointer to the context for hashing 68 * @dest_buf: Pointer to the destination buffer where hash is to be copied 69 * @size: Size of the buffer being hashed 70 * @return 0 if ok, -ve on error 71 */ 72 int hw_sha_finish(struct hash_algo *algo, void *ctx, void *dest_buf, 73 int size); 74 75 #endif 76
