bugfixes hf epa cnonces

- extended length (more than 1 byte) not handled correctly
- nonces not printed on Windows due to type mismatch

armsrc/epa.c

@@ -108,9 +108,9 @@ size_t EPA_Parse_CardAccess(uint8_t *data,
 		if (data[index] == 0x31 || data[index] == 0x30) {
 			// enter the set (skip tag + length)
 			index += 2;
-			// extended length
+			// check for extended length
 			if ((data[index - 1] & 0x80) != 0) {
-				index += (data[index] & 0x7F);
+				index += (data[index-1] & 0x7F);
 			}
 		}
 		// OID

client/cmdhfepa.c

@@ -54,10 +54,10 @@ int CmdHFEPACollectPACENonces(const char *Cmd)
 			size_t nonce_length = resp.arg[1];
 			char *nonce = (char *) malloc(2 * nonce_length + 1);
 			for(int j = 0; j < nonce_length; j++) {
-				snprintf(nonce + (2 * j), 3, "%02X", resp.d.asBytes[j]);
+				sprintf(nonce + (2 * j), "%02X", resp.d.asBytes[j]);
 			}
 			// print nonce
-			PrintAndLog("Length: %d, Nonce: %s",resp.arg[1], nonce);
+			PrintAndLog("Length: %d, Nonce: %s", nonce_length, nonce);
 		}
 		if (i < n - 1) {
 			sleep(d);