113 lines
3.4 KiB
C
113 lines
3.4 KiB
C
/* streamcipher_descriptor.h */
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/*
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This file is part of the AVR-Crypto-Lib.
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Copyright (C) 2006-2015 Daniel Otte (bg@nerilex.org)
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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 the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* \file stremcipher_descriptor.h
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* \author Daniel Otte
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* \date 2011-01-15
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*
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* \license GPLv3 or later
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*
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*/
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#ifndef STREAMCIPHER_DESCRIPTOR_H_
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#define STREAMCIPHER_DESCRIPTOR_H_
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#include <stdint.h>
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#include <avr/pgmspace.h>
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#ifndef VOID_FPT
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#define VOID_FPT
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typedef void(*void_fpt)(void);
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#endif
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typedef void(*sc_init1_fpt)(const void*, void*); /* key of fixed length, no IV*/
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typedef void(*sc_init2_fpt)(const void*, const void*, void*); /* key and IV of fixed length */
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typedef void(*sc_init3_fpt)(const void*, uint16_t,void*); /* key of variable length, no IV */
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typedef void(*sc_init4_fpt)(const void*, uint16_t,const void*, void*); /* key of variable length, IV of fixed length */
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typedef void(*sc_init5_fpt)(const void*, uint16_t,const void*, uint16_t, void*); /* key and IV of variable length */
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typedef uint8_t(*sc_gen1_fpt)(void*); /* return keystream data */
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typedef void(*sc_gen2_fpt)(void*, void*); /* write keystream data to buffer */
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typedef uint8_t(*sc_genra1_fpt)(void*, uint64_t); /* return keystream data */
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typedef void(*sc_genra2_fpt)(void*, void*, uint64_t); /* write keystream data to buffer */
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typedef void(*sc_free_fpt)(void*);
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typedef union{
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void_fpt initvoid;
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sc_init1_fpt init1;
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sc_init2_fpt init2;
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sc_init3_fpt init3;
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sc_init4_fpt init4;
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sc_init5_fpt init5;
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} sc_init_fpt;
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typedef union{
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void_fpt genvoid;
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sc_gen1_fpt gen1;
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sc_gen2_fpt gen2;
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} sc_gen_fpt;
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typedef union{
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void_fpt genravoid;
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sc_genra1_fpt genra1;
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sc_genra2_fpt genra2;
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} sc_genra_fpt;
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#define SC_INIT_TYPE 0x07
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#define SC_INIT_TYPE_1 0x00 /* key of fixed length, no IV*/
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#define SC_INIT_TYPE_2 0x02 /* key and IV of fixed length */
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#define SC_INIT_TYPE_3 0x03 /* key of variable length, no IV */
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#define SC_INIT_TYPE_4 0x04 /* key of variable length, IV of fixed length */
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#define SC_INIT_TYPE_5 0x05 /* key and IV of variable length */
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#define SC_GEN_TYPE 0x08
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#define SC_GEN_TYPE_1 0x00 /* return data stream byte */
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#define SC_GEN_TYPE_2 0x08 /* write data stream block into buffer */
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#define SCDESC_TYPE_STREAMCIPHER 0x03
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typedef struct {
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uint8_t type; /* 3 == streamcipher */
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uint8_t flags;
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PGM_P name;
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size_t ctxsize_B;
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uint16_t gensize_b;
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sc_init_fpt init;
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sc_gen_fpt gen;
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sc_genra_fpt genra;
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sc_free_fpt free;
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PGM_VOID_P valid_keysize_desc;
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PGM_VOID_P valid_ivsize_desc;
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} scdesc_t; /* streamcipher descriptor type */
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typedef struct{
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const scdesc_t *desc_ptr;
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size_t keysize;
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size_t ivsize;
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uint16_t index;
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uint8_t* buffer;
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void* ctx;
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} scgen_ctx_t;
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#endif /* STREAMCIPHER_DESCRIPTOR_H_ */
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