63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
/* keysize_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) 2009 Daniel Otte (daniel.otte@rub.de)
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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 keysize_descriptor.h
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* \author Daniel Otte
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* \email daniel.otte@rub.de
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* \date 2009-01-07
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* \license GPLv3 or later
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*/
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#ifndef KEYSIZE_DESCRIPTOR_H_
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#define KEYSIZE_DESCRIPTOR_H_
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#include <stdint.h>
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#include <avr/pgmspace.h>
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#define KS_TYPE_TERMINATOR 0x00
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#define KS_TYPE_LIST 0x01
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#define KS_TYPE_RANGE 0x02
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#define KS_TYPE_ARG_RANGE 0x03
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#define KS_INT(a) ((a)&0xFF), ((a)>>8)
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typedef struct{ /* keysize is valid if listed in items */
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uint8_t n_items; /* number of items (value 0 is reserved) */
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uint16_t items[]; /* list of valid lengths */
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}keysize_desc_list_t;
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typedef struct{ /* keysize is valid if min<=keysize<=max */
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uint16_t min;
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uint16_t max;
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}keysize_desc_range_t;
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typedef struct{ /* keysize is valid if min<=keysize<=max and if keysize mod distance == offset */
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uint16_t min;
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uint16_t max;
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uint16_t distance;
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uint16_t offset;
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}keysize_desc_arg_range_t;
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uint8_t is_valid_keysize_P(PGM_VOID_P ks_desc, uint16_t keysize);
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uint16_t get_keysize(PGM_VOID_P ks_desc);
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uint16_t get_keysizes(PGM_VOID_P ks_desc, uint16_t** list);
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#endif /* KEYSIZE_DESCRIPTOR_H_ */
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