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96 lines
4 KiB
C
96 lines
4 KiB
C
//-----------------------------------------------------------------------------
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// Copyright (C) 2016, 2017 by piwi
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//
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// This code is licensed to you under the terms of the GNU GPL, version 2 or,
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// at your option, any later version. See the LICENSE.txt file for the text of
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// the license.
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//-----------------------------------------------------------------------------
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// Implements a card only attack based on crypto text (encrypted nonces
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// received during a nested authentication) only. Unlike other card only
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// attacks this doesn't rely on implementation errors but only on the
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// inherent weaknesses of the crypto1 cypher. Described in
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// Carlo Meijer, Roel Verdult, "Ciphertext-only Cryptanalysis on Hardened
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// Mifare Classic Cards" in Proceedings of the 22nd ACM SIGSAC Conference on
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// Computer and Communications Security, 2015
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//-----------------------------------------------------------------------------
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//
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// brute forcing is based on @aczids bitsliced brute forcer
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// https://github.com/aczid/crypto1_bs with some modifications. Mainly:
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// - don't rollback. Start with 2nd byte of nonce instead
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// - reuse results of filter subfunctions
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// - reuse results of previous nonces if some first bits are identical
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//
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//-----------------------------------------------------------------------------
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// aczid's Copyright notice:
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//
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// Bit-sliced Crypto-1 brute-forcing implementation
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// Builds on the data structures returned by CraptEV1 craptev1_get_space(nonces, threshold, uid)
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/*
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Copyright (c) 2015-2016 Aram Verstegen
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#ifndef HARDNESTED_BF_CORE_H__
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#define HARDNESTED_BF_CORE_H__
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#include "hardnested_bruteforce.h" // statelist_t
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#if ( defined (__i386__) || defined (__x86_64__) ) && \
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( !defined(__APPLE__) || \
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(defined(__APPLE__) && (__clang_major__ > 8 || __clang_major__ == 8 && __clang_minor__ >= 1)) )
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# define COMPILER_HAS_SIMD_X86
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# if defined(COMPILER_HAS_SIMD_X86) && ((__GNUC__ >= 5) && (__GNUC__ > 5 || __GNUC_MINOR__ > 2))
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# define COMPILER_HAS_SIMD_AVX512
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# endif
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#endif
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// ARM64 mandates implementation of NEON
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#if defined(__arm64__) || defined(__aarch64__)
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#define COMPILER_HAS_SIMD_NEON
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#define arm_has_neon() (true)
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// ARMv7 or older, NEON is optional and autodetection is difficult
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#elif defined(__ARM_NEON)
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#define COMPILER_HAS_SIMD_NEON
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#define arm_has_neon() (false)
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#endif
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typedef enum {
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SIMD_AUTO,
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#if defined(COMPILER_HAS_SIMD_AVX512)
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SIMD_AVX512,
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#endif
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#if defined(COMPILER_HAS_SIMD_X86)
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SIMD_AVX2,
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SIMD_AVX,
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SIMD_SSE2,
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SIMD_MMX,
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#endif
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#if defined(COMPILER_HAS_SIMD_NEON)
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SIMD_NEON,
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#endif
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SIMD_NONE,
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} SIMDExecInstr;
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void SetSIMDInstr(SIMDExecInstr instr);
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SIMDExecInstr GetSIMDInstrAuto(void);
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uint64_t crack_states_bitsliced(uint32_t cuid, uint8_t *best_first_bytes, statelist_t *p, uint32_t *keys_found, uint64_t *num_keys_tested, uint32_t nonces_to_bruteforce, uint8_t *bf_test_nonce_2nd_byte, noncelist_t *nonces);
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void bitslice_test_nonces(uint32_t nonces_to_bruteforce, uint32_t *bf_test_nonce, uint8_t *bf_test_nonce_par);
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#endif
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