X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/dfb387bf0f73129f4bcb27eb4c840d9a35f390d6..2487dfeb07edb8e08fa4ceadf187bcda87927455:/client/cmdhfmf.c

diff --git a/client/cmdhfmf.c b/client/cmdhfmf.c
index 8a8a38fc..48e78b1c 100644
--- a/client/cmdhfmf.c
+++ b/client/cmdhfmf.c
@@ -58,7 +58,8 @@ start:
 				case -1 : PrintAndLog("Button pressed. Aborted.\n"); break;
 				case -2 : PrintAndLog("Card is not vulnerable to Darkside attack (doesn't send NACK on authentication requests).\n"); break;
 				case -3 : PrintAndLog("Card is not vulnerable to Darkside attack (its random number generator is not predictable).\n"); break;
-				case -4 : PrintAndLog("The card's random number generator is vulnerable but behaves somewhat weird (Mifare clone?). This needs to be fixed.\n"); break;
+				case -4 : PrintAndLog("Card is not vulnerable to Darkside attack (its random number generator seems to be based on the wellknown");
+							PrintAndLog("generating polynomial with 16 effective bits only, but shows unexpected behaviour.\n"); break;
 				default: ;
 			}
 			break;
@@ -1950,6 +1951,13 @@ int CmdHF14AMfSniff(const char *Cmd){
 	return 0;
 }
 
+//needs nt, ar, at, Data to decrypt
+int CmdDecryptTraceCmds(const char *Cmd){
+	uint8_t data[50];
+	int len = 0;
+	param_gethex_ex(Cmd,3,data,&len);
+	return tryDecryptWord(param_get32ex(Cmd,0,0,16),param_get32ex(Cmd,1,0,16),param_get32ex(Cmd,2,0,16),data,len/2);
+}
 
 static command_t CommandTable[] =
 {
@@ -1978,6 +1986,7 @@ static command_t CommandTable[] =
   {"cgetsc",	CmdHF14AMfCGetSc,		0, "Read sector - Magic Chinese card"},
   {"cload",		CmdHF14AMfCLoad,		0, "Load dump into magic Chinese card"},
   {"csave",		CmdHF14AMfCSave,		0, "Save dump from magic Chinese card into file or emulator"},
+  {"decrypt", CmdDecryptTraceCmds,1, "[nt] [ar_enc] [at_enc] [data] - to decrypt snoop or trace"},
   {NULL, NULL, 0, NULL}
 };