X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/8556b852ed769280d1b63054ab1bd08fa19b746a..f208c9e281295074e67da04f1527865fae7b2b74:/armsrc/mifareutil.c?ds=sidebyside

diff --git a/armsrc/mifareutil.c b/armsrc/mifareutil.c
index be36e9db..a88f21bc 100644
--- a/armsrc/mifareutil.c
+++ b/armsrc/mifareutil.c
@@ -339,6 +339,52 @@ void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
 	memcpy(data, emCARD + bytePtr, byteCount);
 }
 
+int emlCheckValBl(int blockNum) {
+	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
+	uint8_t* data = emCARD + blockNum * 16;
+
+	if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
+			(data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
+			(data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
+			(data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
+			(data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
+			(data[12] != (data[15] ^ 0xff))
+		 ) 
+		return 1;
+	return 0;
+}
+
+int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
+	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
+	uint8_t* data = emCARD + blockNum * 16;
+	
+	if (emlCheckValBl(blockNum)) {
+		return 1;
+	}
+	
+	memcpy(blReg, data, 4);
+	*blBlock = data[12];
+	
+	return 0;
+}
+
+int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
+	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
+	uint8_t* data = emCARD + blockNum * 16;
+	
+	memcpy(data + 0, &blReg, 4);
+	memcpy(data + 8, &blReg, 4);
+	blReg = blReg ^ 0xffffffff;
+	memcpy(data + 4, &blReg, 4);
+	
+	data[12] = blBlock;
+	data[13] = blBlock ^ 0xff;
+	data[14] = blBlock;
+	data[15] = blBlock ^ 0xff;
+	
+	return 0;
+}
+
 uint64_t emlGetKey(int sectorNum, int keyType) {
 	uint8_t key[6];
 	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
@@ -348,18 +394,18 @@ uint64_t emlGetKey(int sectorNum, int keyType) {
 }
 
 void emlClearMem(void) {
-	int i;
+	int b;
 	
 	const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
-	const uint8_t empty[] =   {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
 	const uint8_t uid[]   =   {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
-	// fill sectors data
-	for(i = 0; i < 16; i++) {
-		emlSetMem((uint8_t *)empty,   i * 4 + 0, 1);
-		emlSetMem((uint8_t *)empty,   i * 4 + 1, 1);
-		emlSetMem((uint8_t *)empty,   i * 4 + 2, 1);
-		emlSetMem((uint8_t *)trailer, i * 4 + 3, 1);
-	}
+	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
+	
+	memset(emCARD, 0, CARD_MEMORY_LEN);
+	
+	// fill sectors trailer data
+	for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {
+		emlSetMem((uint8_t *)trailer, b , 1);
+	}	
 
 	// uid
 	emlSetMem((uint8_t *)uid, 0, 1);