../svn-commit.tmp
This commit is contained in:
Martin Willi
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# Copyright (C) 2005 Jan Hutter, Martin Willi
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# Hochschule fuer Technik Rapperswil
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation; either version 2 of the License, or (at your
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# option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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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 MERCHANTABILITY
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# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# for more details.
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#
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CRYPTERS_DIR= $(CRYPTO_DIR)crypters/
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LIB_OBJS+= $(BUILD_DIR)crypter.o
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$(BUILD_DIR)crypter.o : $(CRYPTERS_DIR)crypter.c $(CRYPTERS_DIR)crypter.h
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$(CC) $(CFLAGS) -c -o $@ $<
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LIB_OBJS+= $(BUILD_DIR)aes_cbc_crypter.o
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$(BUILD_DIR)aes_cbc_crypter.o : $(CRYPTERS_DIR)aes_cbc_crypter.c $(CRYPTERS_DIR)aes_cbc_crypter.h
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$(CC) $(CFLAGS) -c -o $@ $<
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File diff suppressed because it is too large
Load Diff
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/**
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* @file aes_cbc_crypter.h
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*
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* @brief Interface of aes_cbc_crypter_t
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*
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*/
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/*
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* Copyright (C) 2001 Dr B. R. Gladman <[email protected]>
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* Copyright (C) 2005 Jan Hutter, Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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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 MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#ifndef AES_CBC_CRYPTER_H_
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#define AES_CBC_CRYPTER_H_
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#include <crypto/crypters/crypter.h>
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typedef struct aes_cbc_crypter_t aes_cbc_crypter_t;
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/**
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* @brief Class implementing the AES symmetric encryption algorithm.
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*
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* @b Constructors:
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* - aes_cbc_crypter_create()
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*
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* @ingroup crypters
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*/
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struct aes_cbc_crypter_t {
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/**
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* The crypter_t interface.
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*/
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crypter_t crypter_interface;
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};
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/**
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* @brief Constructor to create aes_cbc_crypter_t objects.
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*
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* Supported key sizes are: 16, 24 or 32.
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*
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* @param key_size key size in bytes
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* @return
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* - aes_cbc_crypter_t object
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* - NULL if key size not supported
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*/
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aes_cbc_crypter_t *aes_cbc_crypter_create(size_t key_size);
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#endif /* AES_CBC_CRYPTER_H_ */
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/**
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* @file crypter.c
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*
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* @brief Generic constructor for crypter_t.
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*
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*/
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/*
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* Copyright (C) 2005 Jan Hutter, Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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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 MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "crypter.h"
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#include <crypto/crypters/aes_cbc_crypter.h>
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/**
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* String mappings for encryption_algorithm_t.
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*/
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mapping_t encryption_algorithm_m[] = {
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{ENCR_UNDEFINED, "ENCR_UNDEFINED"},
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{ENCR_DES_IV64, "ENCR_DES_IV64"},
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{ENCR_DES, "ENCR_DES"},
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{ENCR_3DES, "ENCR_3DES"},
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{ENCR_RC5, "ENCR_RC5"},
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{ENCR_IDEA, "ENCR_IDEA"},
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{ENCR_CAST, "ENCR_CAST"},
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{ENCR_BLOWFISH, "ENCR_BLOWFISH"},
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{ENCR_3IDEA, "ENCR_3IDEA"},
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{ENCR_DES_IV32, "ENCR_DES_IV32"},
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{ENCR_NULL, "ENCR_NULL"},
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{ENCR_AES_CBC, "ENCR_AES_CBC"},
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{ENCR_AES_CTR, "ENCR_AES_CTR"},
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{MAPPING_END, NULL}
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};
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/*
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* Described in header.
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*/
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crypter_t *crypter_create(encryption_algorithm_t encryption_algorithm, size_t key_size)
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{
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switch (encryption_algorithm)
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{
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case ENCR_AES_CBC:
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{
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return (crypter_t*)aes_cbc_crypter_create(key_size);
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}
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default:
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return NULL;
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}
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}
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/**
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* @file crypter.h
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*
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* @brief Interface crypter_t
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*
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*/
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/*
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* Copyright (C) 2005 Jan Hutter, Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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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 MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#ifndef CRYPTER_H_
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#define CRYPTER_H_
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#include <types.h>
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typedef enum encryption_algorithm_t encryption_algorithm_t;
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/**
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* @brief Encryption algorithm, as in IKEv2 RFC 3.3.2.
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*
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* Currently only the following algorithms are implemented and therefore supported:
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* - ENCR_AES_CBC
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*
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* @todo Implement more enryption algorithms, such as 3DES
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*
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* @ingroup crypters
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*/
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enum encryption_algorithm_t {
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ENCR_UNDEFINED = 1024,
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ENCR_DES_IV64 = 1,
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ENCR_DES = 2,
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ENCR_3DES = 3,
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ENCR_RC5 = 4,
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ENCR_IDEA = 5,
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ENCR_CAST = 6,
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ENCR_BLOWFISH = 7,
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ENCR_3IDEA = 8,
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ENCR_DES_IV32 = 9,
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ENCR_NULL = 11,
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/**
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* Implemented in class aes_cbc_crypter_t.
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*/
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ENCR_AES_CBC = 12,
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ENCR_AES_CTR = 13
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};
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/**
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* String mappings for encryption_algorithm_t.
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*/
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extern mapping_t encryption_algorithm_m[];
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typedef struct crypter_t crypter_t;
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/**
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* @brief Generic interface for symmetric encryption algorithms.
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*
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* @b Constructors:
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* - crypter_create()
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*
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* @ingroup crypters
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*/
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struct crypter_t {
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/**
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* @brief Encrypt a chunk of data and allocate space for the encrypted value.
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*
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* @param this calling object
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* @param data data to encrypt
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* @param iv initializing vector
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* @param[out] encrypted pointer where the encrypted bytes will be written
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* @return
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* - SUCCESS
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* - INVALID_ARG if data size not a multiple of block size
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*/
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status_t (*encrypt) (crypter_t *this, chunk_t data, chunk_t iv, chunk_t *encrypted);
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/**
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* @brief Decrypt a chunk of data and allocate space for the decrypted value.
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*
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* @param this calling object
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* @param data data to decrypt
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* @param iv initializing vector
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* @param[out] encrypted pointer where the decrypted bytes will be written
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* @return
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* - SUCCESS
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* - INVALID_ARG if data size not a multiple of block size
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*/
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status_t (*decrypt) (crypter_t *this, chunk_t data, chunk_t iv, chunk_t *decrypted);
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/**
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* @brief Get the block size of this crypter_t object.
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*
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* @param this calling object
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* @return block size in bytes
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*/
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size_t (*get_block_size) (crypter_t *this);
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/**
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* @brief Get the key size of this crypter_t object.
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*
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* @param this calling object
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* @return key size in bytes
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*/
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size_t (*get_key_size) (crypter_t *this);
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/**
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* @brief Set the key for this crypter_t object.
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*
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* @param this calling object
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* @param key key to set
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* @return
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* - SUCCESS
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* - INVALID_ARG if key length invalid
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*/
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status_t (*set_key) (crypter_t *this, chunk_t key);
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/**
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* @brief Destroys a crypter_t object.
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*
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* @param this calling object
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*/
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void (*destroy) (crypter_t *this);
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};
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/**
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* @brief Generic constructor for crypter_t objects.
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*
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* Currently only the following algorithms are implemented and therefore supported:
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* - ENCR_AES_CBC
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*
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* The key_size is ignored for algorithms with fixed key size.
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*
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* @param encryption_algorithm Algorithm to use for crypter
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* @param key_size size of the key in bytes
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* @return
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* - crypter_t object
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* - NULL if encryption algorithm/key_size is not supported
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*/
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crypter_t *crypter_create(encryption_algorithm_t encryption_algorithm, size_t key_size);
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#endif /*CRYPTER_H_*/
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