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37f95f67fe
The new search has two new features: - it takes advantage of the fact that DES keys are only 56-bit long (and not 64) - it is now multithreaded As a proof of concept, I ran it on the A10 series firmware upgrade and was able to find the key in a few seconds using 4 threads. The search is still limited to ascii hex passwords (seems to work on all devices I have tried thus far). Change-Id: Ied080286d2bbdc493a6ceaecaaadba802b429666
70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2012 Amaury Pouly
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "mg.h"
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#include <crypto++/cryptlib.h>
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#include <crypto++/modes.h>
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#include <crypto++/des.h>
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#include <crypto++/aes.h>
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#include <stdio.h>
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using namespace CryptoPP;
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namespace
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{
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inline int dec_des_ecb(void *in, int size, void *out, uint8_t *key)
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{
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ECB_Mode< DES >::Decryption dec;
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if(size % 8)
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return 42;
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dec.SetKey(key, 8);
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dec.ProcessData((byte*)out, (byte*)in, size);
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return 0;
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}
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inline int enc_des_ecb(void *in, int size, void *out, uint8_t *key)
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{
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ECB_Mode< DES >::Encryption enc;
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if(size % 8)
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return 42;
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enc.SetKey(key, 8);
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enc.ProcessData((byte*)out, (byte*)in, size);
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return 0;
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}
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}
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int mg_decrypt_fw(void *in, int size, void *out, uint8_t *key)
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{
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return dec_des_ecb(in, size, out, key);
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}
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int mg_encrypt_fw(void *in, int size, void *out, uint8_t *key)
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{
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return enc_des_ecb(in, size, out, key);
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}
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int mg_decrypt_pass(void *in, int size, void *out, uint8_t *key)
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{
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return dec_des_ecb(in, size, out, key);
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}
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int mg_encrypt_pass(void *in, int size, void *out, uint8_t *key)
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{
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return enc_des_ecb(in, size, out, key);
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}
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