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72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
/*
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* Argon2 reference source code package - reference C implementations
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*
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* Copyright 2015
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* Daniel Dinu, Dmitry Khovratovich, Jean-Philippe Aumasson, and Samuel Neves
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*
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* You may use this work under the terms of a Creative Commons CC0 1.0
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* License/Waiver or the Apache Public License 2.0, at your option. The terms of
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* these licenses can be found at:
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*
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* - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
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* - Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
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*
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* You should have received a copy of both of these licenses along with this
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* software. If not, they may be obtained at the above URLs.
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*/
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "argon2.h"
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#include "core.h"
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int argon2_ctx(argon2_context *context, argon2_type type) {
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/* 1. Validate all inputs */
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uint32_t memory_blocks, segment_length;
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argon2_instance_t instance;
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/* 2. Align memory size */
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/* Minimum memory_blocks = 8L blocks, where L is the number of lanes */
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memory_blocks = context->m_cost;
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if (memory_blocks < 2 * ARGON2_SYNC_POINTS * context->lanes) {
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memory_blocks = 2 * ARGON2_SYNC_POINTS * context->lanes;
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}
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segment_length = memory_blocks / (context->lanes * ARGON2_SYNC_POINTS);
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/* Ensure that all segments have equal length */
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memory_blocks = segment_length * (context->lanes * ARGON2_SYNC_POINTS);
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instance.version = context->version;
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instance.memory = NULL;
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instance.passes = context->t_cost;
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instance.memory_blocks = memory_blocks;
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instance.segment_length = segment_length;
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instance.lane_length = segment_length * ARGON2_SYNC_POINTS;
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instance.lanes = context->lanes;
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instance.threads = context->threads;
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instance.type = type;
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if (instance.threads > instance.lanes) {
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instance.threads = instance.lanes;
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}
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/* 3. Initialization: Hashing inputs, allocating memory, filling first
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* blocks
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*/
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initialize(&instance, context);
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/* 4. Filling memory */
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fill_memory_blocks(&instance);
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/* 5. Finalization */
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finalize(context, &instance);
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return ARGON2_OK;
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}
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