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/*
* Copyright (C) 2012-2017 ARM Limited or its affiliates.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/* \file ssi_hash.h
* ARM CryptoCell Hash Crypto API
*/
#ifndef __SSI_HASH_H__
#define __SSI_HASH_H__
#include "ssi_buffer_mgr.h"
#define HMAC_IPAD_CONST 0x36363636
#define HMAC_OPAD_CONST 0x5C5C5C5C
#if (DX_DEV_SHA_MAX > 256)
#define HASH_LEN_SIZE 16
#define SSI_MAX_HASH_DIGEST_SIZE SHA512_DIGEST_SIZE
#define SSI_MAX_HASH_BLCK_SIZE SHA512_BLOCK_SIZE
#else
#define HASH_LEN_SIZE 8
#define SSI_MAX_HASH_DIGEST_SIZE SHA256_DIGEST_SIZE
#define SSI_MAX_HASH_BLCK_SIZE SHA256_BLOCK_SIZE
#endif
#define XCBC_MAC_K1_OFFSET 0
#define XCBC_MAC_K2_OFFSET 16
#define XCBC_MAC_K3_OFFSET 32
#define CC_EXPORT_MAGIC 0xC2EE1070U
// this struct was taken from drivers/crypto/nx/nx-aes-xcbc.c and it is used for xcbc/cmac statesize
struct aeshash_state {
u8 state[AES_BLOCK_SIZE];
unsigned int count;
u8 buffer[AES_BLOCK_SIZE];
};
/* ahash state */
struct ahash_req_ctx {
u8 *buff0;
u8 *buff1;
u8 *digest_result_buff;
struct async_gen_req_ctx gen_ctx;
enum ssi_req_dma_buf_type data_dma_buf_type;
u8 *digest_buff;
u8 *opad_digest_buff;
u8 *digest_bytes_len;
dma_addr_t opad_digest_dma_addr;
dma_addr_t digest_buff_dma_addr;
dma_addr_t digest_bytes_len_dma_addr;
dma_addr_t digest_result_dma_addr;
u32 buff0_cnt;
u32 buff1_cnt;
u32 buff_index;
u32 xcbc_count; /* count xcbc update operatations */
struct scatterlist buff_sg[2];
struct scatterlist *curr_sg;
u32 in_nents;
u32 mlli_nents;
struct mlli_params mlli_params;
};
int ssi_hash_alloc(struct ssi_drvdata *drvdata);
int ssi_hash_init_sram_digest_consts(struct ssi_drvdata *drvdata);
int ssi_hash_free(struct ssi_drvdata *drvdata);
/*!
* Gets the initial digest length
*
* \param drvdata
* \param mode The Hash mode. Supported modes: MD5/SHA1/SHA224/SHA256/SHA384/SHA512
*
* \return u32 returns the address of the initial digest length in SRAM
*/
ssi_sram_addr_t
ssi_ahash_get_initial_digest_len_sram_addr(void *drvdata, u32 mode);
/*!
* Gets the address of the initial digest in SRAM
* according to the given hash mode
*
* \param drvdata
* \param mode The Hash mode. Supported modes: MD5/SHA1/SHA224/SHA256/SHA384/SHA512
*
* \return u32 The address of the inital digest in SRAM
*/
ssi_sram_addr_t ssi_ahash_get_larval_digest_sram_addr(void *drvdata, u32 mode);
#endif /*__SSI_HASH_H__*/
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