User Manual

Table Of Contents

0 if successful; otherwise, Nonzero. Reference Table 1.11

Example

int st;

unsigned char revlen;

unsigned char fileset[20];

st= fw_getFileProper (icdev,&revlen,fileset);

int fw_changeFileSetting(int icdev,unsigned char fileNo,unsigned char

comSet,unsigned char* accessRight,char* sessionKey);

Description

Change the file settings

Parameters

icdev: Value of Device Handle.

fileNo: File ID

comSet: data transmission form:

0: transmission in the clear,

1: MAC code validation,

3: DES/3DES Encryption

accessRight: Access right

accessRight [0]:Low nibble has the right to modify access permissions

High nibble has the right to read / write the file

accessRight [1]:Low nibble has the access to write to the file

High nibble has the access to read the file

sessionKey: session key

Return Value

0 if successful; otherwise, Nonzero. Reference Table 1.11

Example

/ / Modify the setting of file with identification number of 0x01

int st;

unsigned char comSetting=0x01;// MAC code verification

unsigned char accessRights[3]={0x22,0x22};/* to Read, write, read / write, to modify

the settings, all are required to verify the key No. 2 */

st= fw_changeFileSetting (icdev,0x01,comSetting,accessRights,sesskey);

/* sesskey key obtained by verifying the session key */

int fw_createDataFile_desfire(int icdev,unsigned char fileNo,unsigned char

ComSet,unsigned char* AccessRight,unsigned char* FileSize);