X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/5149e37e66dd3324905ec7e18e67798b03f16ef6..6af88242eb458bad91c77b424b03bf19ecce5da1:/client/loclass/cipher.c diff --git a/client/loclass/cipher.c b/client/loclass/cipher.c index d3b1e799..9c1c2cfd 100644 --- a/client/loclass/cipher.c +++ b/client/loclass/cipher.c @@ -219,7 +219,7 @@ void MAC(uint8_t* k, BitstreamIn input, BitstreamOut out) BitstreamIn input_32_zeroes = {zeroes_32,sizeof(zeroes_32)*8,0}; State initState = suc(k,init(k),&input); output(k,initState,&input_32_zeroes,&out); -} +} void doMAC(uint8_t *cc_nr_p, int length, uint8_t *div_key_p, uint8_t mac[4]) { @@ -228,17 +228,17 @@ void doMAC(uint8_t *cc_nr_p, int length, uint8_t *div_key_p, uint8_t mac[4]) cc_nr=(uint8_t*)malloc(length+1); memcpy(cc_nr,cc_nr_p,length); memcpy(div_key,div_key_p,8); - - reverse_arraybytes(cc_nr,length); - BitstreamIn bitstream = {cc_nr,length * 8,0}; - uint8_t dest []= {0,0,0,0,0,0,0,0}; - BitstreamOut out = { dest, sizeof(dest)*8, 0 }; - MAC(div_key,bitstream, out); - //The output MAC must also be reversed - reverse_arraybytes(dest, sizeof(dest)); - memcpy(mac, dest, 4); + + reverse_arraybytes(cc_nr,length); + BitstreamIn bitstream = {cc_nr,length * 8,0}; + uint8_t dest []= {0,0,0,0,0,0,0,0}; + BitstreamOut out = { dest, sizeof(dest)*8, 0 }; + MAC(div_key,bitstream, out); + //The output MAC must also be reversed + reverse_arraybytes(dest, sizeof(dest)); + memcpy(mac,dest,4); //printf("Calculated_MAC\t%02x%02x%02x%02x\n", dest[0],dest[1],dest[2],dest[3]); - free(cc_nr); + free(cc_nr); return; } @@ -264,8 +264,8 @@ int testMAC() prnlog("[+] FAILED: MAC calculation failed:"); printarr(" Calculated_MAC", calculated_mac, 4); printarr(" Correct_MAC ", correct_MAC, 4); - return 1; - } + return 1; +} return 0; }