1 /* 2 * Header file for multi buffer SHA256 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 "sha256_mb_mgr.h" 58 59 #define HASH_UPDATE 0x00 60 #define HASH_LAST 0x01 61 #define HASH_DONE 0x02 62 #define HASH_FINAL 0x04 63 64 #define HASH_CTX_STS_IDLE 0x00 65 #define HASH_CTX_STS_PROCESSING 0x01 66 #define HASH_CTX_STS_LAST 0x02 67 #define HASH_CTX_STS_COMPLETE 0x04 68 69 enum hash_ctx_error { 70 HASH_CTX_ERROR_NONE = 0, 71 HASH_CTX_ERROR_INVALID_FLAGS = -1, 72 HASH_CTX_ERROR_ALREADY_PROCESSING = -2, 73 HASH_CTX_ERROR_ALREADY_COMPLETED = -3, 74 75 #ifdef HASH_CTX_DEBUG 76 HASH_CTX_ERROR_DEBUG_DIGEST_MISMATCH = -4, 77 #endif 78 }; 79 80 81 #define hash_ctx_user_data(ctx) ((ctx)->user_data) 82 #define hash_ctx_digest(ctx) ((ctx)->job.result_digest) 83 #define hash_ctx_processing(ctx) ((ctx)->status & HASH_CTX_STS_PROCESSING) 84 #define hash_ctx_complete(ctx) ((ctx)->status == HASH_CTX_STS_COMPLETE) 85 #define hash_ctx_status(ctx) ((ctx)->status) 86 #define hash_ctx_error(ctx) ((ctx)->error) 87 #define hash_ctx_init(ctx) \ 88 do { \ 89 (ctx)->error = HASH_CTX_ERROR_NONE; \ 90 (ctx)->status = HASH_CTX_STS_COMPLETE; \ 91 } while (0) 92 93 94 /* Hash Constants and Typedefs */ 95 #define SHA256_DIGEST_LENGTH 8 96 #define SHA256_LOG2_BLOCK_SIZE 6 97 98 #define SHA256_PADLENGTHFIELD_SIZE 8 99 100 #ifdef SHA_MB_DEBUG 101 #define assert(expr) \ 102 do { \ 103 if (unlikely(!(expr))) { \ 104 printk(KERN_ERR "Assertion failed! %s,%s,%s,line=%d\n", \ 105 #expr, __FILE__, __func__, __LINE__); \ 106 } \ 107 } while (0) 108 #else 109 #define assert(expr) do {} while (0) 110 #endif 111 112 struct sha256_ctx_mgr { 113 struct sha256_mb_mgr mgr; 114 }; 115 116 /* typedef struct sha256_ctx_mgr sha256_ctx_mgr; */ 117 118 struct sha256_hash_ctx { 119 /* Must be at struct offset 0 */ 120 struct job_sha256 job; 121 /* status flag */ 122 int status; 123 /* error flag */ 124 int error; 125 126 uint64_t total_length; 127 const void *incoming_buffer; 128 uint32_t incoming_buffer_length; 129 uint8_t partial_block_buffer[SHA256_BLOCK_SIZE * 2]; 130 uint32_t partial_block_buffer_length; 131 void *user_data; 132 }; 133 134 #endif 135
