LXR linux/arch/x86/crypto/sha512-mb/sha512_mb

   1/*
   2 * Header file for multi buffer SHA512 context
   3 *
   4 * This file is provided under a dual BSD/GPLv2 license.  When using or
   5 * redistributing this file, you may do so under either license.
   6 *
   7 * GPL LICENSE SUMMARY
   8 *
   9 *  Copyright(c) 2016 Intel Corporation.
  10 *
  11 *  This program is free software; you can redistribute it and/or modify
  12 *  it under the terms of version 2 of the GNU General Public License as
  13 *  published by the Free Software Foundation.
  14 *
  15 *  This program is distributed in the hope that it will be useful, but
  16 *  WITHOUT ANY WARRANTY; without even the implied warranty of
  17 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18 *  General Public License for more details.
  19 *
  20 *  Contact Information:
  21 *      Megha Dey <megha.dey@linux.intel.com>
  22 *
  23 *  BSD LICENSE
  24 *
  25 *  Copyright(c) 2016 Intel Corporation.
  26 *
  27 *  Redistribution and use in source and binary forms, with or without
  28 *  modification, are permitted provided that the following conditions
  29 *  are met:
  30 *
  31 *    * Redistributions of source code must retain the above copyright
  32 *      notice, this list of conditions and the following disclaimer.
  33 *    * Redistributions in binary form must reproduce the above copyright
  34 *      notice, this list of conditions and the following disclaimer in
  35 *      the documentation and/or other materials provided with the
  36 *      distribution.
  37 *    * Neither the name of Intel Corporation nor the names of its
  38 *      contributors may be used to endorse or promote products derived
  39 *      from this software without specific prior written permission.
  40 *
  41 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  42 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  43 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  44 *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  45 *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  46 *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  47 *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  48 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  49 *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  50 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  51 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  52 */
  53
  54#ifndef _SHA_MB_CTX_INTERNAL_H
  55#define _SHA_MB_CTX_INTERNAL_H
  56
  57#include "sha512_mb_mgr.h"
  58
  59#define HASH_UPDATE          0x00
  60#define HASH_FIRST           0x01
  61#define HASH_LAST            0x02
  62#define HASH_ENTIRE          0x03
  63#define HASH_DONE            0x04
  64#define HASH_FINAL           0x08
  65
  66#define HASH_CTX_STS_IDLE       0x00
  67#define HASH_CTX_STS_PROCESSING 0x01
  68#define HASH_CTX_STS_LAST       0x02
  69#define HASH_CTX_STS_COMPLETE   0x04
  70
  71enum hash_ctx_error {
  72        HASH_CTX_ERROR_NONE               =  0,
  73        HASH_CTX_ERROR_INVALID_FLAGS      = -1,
  74        HASH_CTX_ERROR_ALREADY_PROCESSING = -2,
  75        HASH_CTX_ERROR_ALREADY_COMPLETED  = -3,
  76};
  77
  78#define hash_ctx_user_data(ctx)  ((ctx)->user_data)
  79#define hash_ctx_digest(ctx)     ((ctx)->job.result_digest)
  80#define hash_ctx_processing(ctx) ((ctx)->status & HASH_CTX_STS_PROCESSING)
  81#define hash_ctx_complete(ctx)   ((ctx)->status == HASH_CTX_STS_COMPLETE)
  82#define hash_ctx_status(ctx)     ((ctx)->status)
  83#define hash_ctx_error(ctx)      ((ctx)->error)
  84#define hash_ctx_init(ctx) \
  85        do { \
  86                (ctx)->error = HASH_CTX_ERROR_NONE; \
  87                (ctx)->status = HASH_CTX_STS_COMPLETE; \
  88        } while (0)
  89
  90/* Hash Constants and Typedefs */
  91#define SHA512_DIGEST_LENGTH          8
  92#define SHA512_LOG2_BLOCK_SIZE        7
  93
  94#define SHA512_PADLENGTHFIELD_SIZE    16
  95
  96#ifdef SHA_MB_DEBUG
  97#define assert(expr) \
  98do { \
  99        if (unlikely(!(expr))) { \
 100                printk(KERN_ERR "Assertion failed! %s,%s,%s,line=%d\n", \
 101                #expr, __FILE__, __func__, __LINE__); \
 102        } \
 103} while (0)
 104#else
 105#define assert(expr) do {} while (0)
 106#endif
 107
 108struct sha512_ctx_mgr {
 109        struct sha512_mb_mgr mgr;
 110};
 111
 112/* typedef struct sha512_ctx_mgr sha512_ctx_mgr; */
 113
 114struct sha512_hash_ctx {
 115        /* Must be at struct offset 0 */
 116        struct job_sha512       job;
 117        /* status flag */
 118        int status;
 119        /* error flag */
 120        int error;
 121
 122        uint32_t        total_length;
 123        const void      *incoming_buffer;
 124        uint32_t        incoming_buffer_length;
 125        uint8_t         partial_block_buffer[SHA512_BLOCK_SIZE * 2];
 126        uint32_t        partial_block_buffer_length;
 127        void            *user_data;
 128};
 129
 130#endif
 131