1 /*** 2 * Copyright 2017 Marc Stevens <marc@marc-stevens.nl>, Dan Shumow <danshu@microsoft.com> 3 * Distributed under the MIT Software License. 4 * See accompanying file LICENSE.txt or copy at 5 * https://opensource.org/licenses/MIT 6 ***/ 7 8 /* 9 // this file was generated by the 'parse_bitrel' program in the tools section 10 // using the data files from directory 'tools/data/3565' 11 // 12 // sha1_dvs contains a list of SHA-1 Disturbance Vectors (DV) to check 13 // dvType, dvK and dvB define the DV: I(K,B) or II(K,B) (see the paper) 14 // dm[80] is the expanded message block XOR-difference defined by the DV 15 // testt is the step to do the recompression from for collision detection 16 // maski and maskb define the bit to check for each DV in the dvmask returned by ubc_check 17 // 18 // ubc_check takes as input an expanded message block and verifies the unavoidable bitconditions for all listed DVs 19 // it returns a dvmask where each bit belonging to a DV is set if all unavoidable bitconditions for that DV have been met 20 // thus one needs to do the recompression check for each DV that has its bit set 21 */ 22 23 #ifndef SHA1DC_UBC_CHECK_H 24 #define SHA1DC_UBC_CHECK_H 25 26 #if defined(__cplusplus) 27 extern "C" { 28 #endif 29 30 #ifndef SHA1DC_NO_STANDARD_INCLUDES 31 #include <stdint.h> 32 #endif 33 34 #define DVMASKSIZE 1 35 typedef struct { int dvType; int dvK; int dvB; int testt; int maski; int maskb; uint32_t dm[80]; } dv_info_t; 36 extern dv_info_t sha1_dvs[]; 37 void ubc_check(const uint32_t W[80], uint32_t dvmask[DVMASKSIZE]); 38 39 #define DOSTORESTATE58 40 #define DOSTORESTATE65 41 42 #define CHECK_DVMASK(_DVMASK) (0 != _DVMASK[0]) 43 44 #if defined(__cplusplus) 45 } 46 #endif 47 48 #ifdef SHA1DC_CUSTOM_TRAILING_INCLUDE_UBC_CHECK_H 49 #include SHA1DC_CUSTOM_TRAILING_INCLUDE_UBC_CHECK_H 50 #endif 51 52 #endif 53