135 lines
4.3 KiB
C
135 lines
4.3 KiB
C
/*
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* Header file for multi buffer SHA256 context
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2016 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* Contact Information:
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* Megha Dey <megha.dey@linux.intel.com>
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*
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* BSD LICENSE
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*
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* Copyright(c) 2016 Intel Corporation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _SHA_MB_CTX_INTERNAL_H
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#define _SHA_MB_CTX_INTERNAL_H
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#include "sha256_mb_mgr.h"
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#define HASH_UPDATE 0x00
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#define HASH_LAST 0x01
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#define HASH_DONE 0x02
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#define HASH_FINAL 0x04
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#define HASH_CTX_STS_IDLE 0x00
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#define HASH_CTX_STS_PROCESSING 0x01
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#define HASH_CTX_STS_LAST 0x02
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#define HASH_CTX_STS_COMPLETE 0x04
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enum hash_ctx_error {
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HASH_CTX_ERROR_NONE = 0,
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HASH_CTX_ERROR_INVALID_FLAGS = -1,
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HASH_CTX_ERROR_ALREADY_PROCESSING = -2,
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HASH_CTX_ERROR_ALREADY_COMPLETED = -3,
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#ifdef HASH_CTX_DEBUG
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HASH_CTX_ERROR_DEBUG_DIGEST_MISMATCH = -4,
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#endif
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};
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#define hash_ctx_user_data(ctx) ((ctx)->user_data)
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#define hash_ctx_digest(ctx) ((ctx)->job.result_digest)
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#define hash_ctx_processing(ctx) ((ctx)->status & HASH_CTX_STS_PROCESSING)
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#define hash_ctx_complete(ctx) ((ctx)->status == HASH_CTX_STS_COMPLETE)
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#define hash_ctx_status(ctx) ((ctx)->status)
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#define hash_ctx_error(ctx) ((ctx)->error)
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#define hash_ctx_init(ctx) \
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do { \
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(ctx)->error = HASH_CTX_ERROR_NONE; \
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(ctx)->status = HASH_CTX_STS_COMPLETE; \
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} while (0)
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/* Hash Constants and Typedefs */
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#define SHA256_DIGEST_LENGTH 8
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#define SHA256_LOG2_BLOCK_SIZE 6
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#define SHA256_PADLENGTHFIELD_SIZE 8
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#ifdef SHA_MB_DEBUG
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#define assert(expr) \
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do { \
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if (unlikely(!(expr))) { \
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printk(KERN_ERR "Assertion failed! %s,%s,%s,line=%d\n", \
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#expr, __FILE__, __func__, __LINE__); \
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} \
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} while (0)
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#else
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#define assert(expr) do {} while (0)
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#endif
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struct sha256_ctx_mgr {
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struct sha256_mb_mgr mgr;
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};
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/* typedef struct sha256_ctx_mgr sha256_ctx_mgr; */
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struct sha256_hash_ctx {
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/* Must be at struct offset 0 */
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struct job_sha256 job;
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/* status flag */
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int status;
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/* error flag */
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int error;
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uint64_t total_length;
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const void *incoming_buffer;
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uint32_t incoming_buffer_length;
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uint8_t partial_block_buffer[SHA256_BLOCK_SIZE * 2];
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uint32_t partial_block_buffer_length;
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void *user_data;
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};
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#endif
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