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Added CHANGE PIN command.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
This commit is contained in:
Pol Henarejos
2022-04-20 19:15:50 +02:00
parent 1018132f7f
commit c2cfb78204
1 changed files with 21 additions and 0 deletions
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21
src/openpgp/openpgp.c
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@@ -631,6 +631,25 @@ static int cmd_put_data() {
return SW_OK();
}
static int cmd_change_pin() {
if (P1(apdu) != 0x0)
return SW_WRONG_P1P2();
uint16_t fid = 0x1000 | P2(apdu);
file_t *pw;
if (!(pw = search_by_fid(fid, NULL, SPECIFY_EF)))
return SW_REFERENCE_NOT_FOUND();
uint8_t pin_len = file_read_uint8(pw->data+2);
uint16_t r = check_pin(pw, apdu.cmd_apdu_data, pin_len);
if (r != 0x9000)
return r;
uint8_t dhash[33];
dhash[0] = apdu.cmd_apdu_data_len-pin_len;
double_hash_pin(apdu.cmd_apdu_data+pin_len, apdu.cmd_apdu_data_len-pin_len, dhash+1);
flash_write_data_to_file(pw, dhash, sizeof(dhash));
low_flash_available();
return SW_OK();
}
typedef struct cmd
{
uint8_t ins;
@@ -638,6 +657,7 @@ typedef struct cmd
} cmd_t;
#define INS_VERIFY 0x20
#define INS_CHANGE_PIN 0x24
#define INS_SELECT 0xA4
#define INS_GET_DATA 0xCA
#define INS_PUT_DATA 0xDA
@@ -647,6 +667,7 @@ static const cmd_t cmds[] = {
{ INS_SELECT, cmd_select },
{ INS_VERIFY, cmd_verify },
{ INS_PUT_DATA, cmd_put_data },
{ INS_CHANGE_PIN, cmd_change_pin },
{ 0x00, 0x0}
};