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 71 enum 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) \ 98 do { \ 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 107 108 struct sha512_ctx_mgr { 109 struct sha512_mb_mgr mgr; 110 }; 111 112 /* typedef struct sha512_ctx_mgr sha512_ctx_mgr; */ 113 114 struct 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 uint64_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