SET_DATA_KEY
This IOCTL command allows set the data key only for application-managed
encryption. The data structure that is used for this IOCTL is for
all of the supported operating systems.
struct data_key
{
uchar[12 data_key_index;
uchar data_key_index_length;
uchar[15] reserved1;
uchar[32] data_key;
uchar[48] reserved2;
};
An example of the SET_DATA_KEY command is
int set_datakey(void)
{
int rc = 0;
struct data_key encryption_data_key_t;
printf("Issuing set encryption data key......\n");
memset(&encryption_data_key_t, 0, sizeof(struct data_key));
/* fill in your data key here, then issue the following ioctl*/
rc = ioctl(fd, SET_DATA_KEY, &encryption_data_key_t);
return rc;
}