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Fix Historical Bytes buffer with correct padding

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Charles-Edouard de la Vergne 2024-02-23 09:39:12 +01:00
parent 2969c0e150
commit 7d68daf254
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GPG Key ID: F12296941B7BB9C6
5 changed files with 17 additions and 10 deletions
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4
src/gpg_data.c
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@ -80,7 +80,7 @@ int gpg_apdu_get_data(unsigned int ref) {
break;
case 0x5F52:
/* Historical bytes */
gpg_io_insert((const unsigned char *) N_gpg_pstate->histo, 15);
gpg_io_insert((const unsigned char *) N_gpg_pstate->histo, HISTO_LENGTH);
break;
case 0x7F66:
/* Extended length information */
@ -115,7 +115,7 @@ int gpg_apdu_get_data(unsigned int ref) {
memmove(G_gpg_vstate.work.io_buffer + G_gpg_vstate.io_offset - 6,
G_gpg_vstate.kslot->serial,
4);
gpg_io_insert_tlv(0x5F52, 15, (const unsigned char *) N_gpg_pstate->histo);
gpg_io_insert_tlv(0x5F52, HISTO_LENGTH, (const unsigned char *) N_gpg_pstate->histo);
gpg_io_insert_tlv(0x7F66, sizeof(C_ext_length), C_ext_length);
gpg_io_mark();

4
src/gpg_dispatch.c
View File

@ -254,7 +254,7 @@ int gpg_dispatch() {
/* --- ACTIVATE/TERMINATE FILE --- */
case INS_ACTIVATE_FILE:
gpg_io_discard(0);
if (N_gpg_pstate->histo[7] == STATE_TERMINATE) {
if (N_gpg_pstate->histo[HISTO_OFFSET_STATE] == STATE_TERMINATE) {
gpg_install(STATE_ACTIVATE);
}
return SW_OK;
@ -272,7 +272,7 @@ int gpg_dispatch() {
}
/* Other commands allowed if not terminated */
if (N_gpg_pstate->histo[7] != STATE_ACTIVATE) {
if (N_gpg_pstate->histo[HISTO_OFFSET_STATE] != STATE_ACTIVATE) {
return SW_STATE_TERMINATED;
}

13
src/gpg_init.c
View File

@ -261,7 +261,7 @@ const unsigned char C_default_AID[] = {
0x00,
0x00};
const unsigned char C_default_Histo[] = {
const unsigned char C_default_Histo[HISTO_LENGTH] = {
0x00,
0x31,
0xC5, // select method: by DF/partialDF; IO-file:readbinary; RFU???
@ -269,6 +269,11 @@ const unsigned char C_default_Histo[] = {
0xC0, // select method: by DF/partialDF ,
0x01, // data coding style: ontime/byte
0x80, // chaining
0x00, // Padding zero bytes
0x00,
0x00,
0x00,
0x00,
0x7F, // zero state
0x90,
0x00};
@ -408,9 +413,9 @@ void gpg_install(unsigned char app_state) {
nvm_write((void *) (N_gpg_pstate), NULL, sizeof(gpg_nv_state_t));
// historical bytes
memmove(G_gpg_vstate.work.io_buffer, C_default_Histo, sizeof(C_default_Histo));
G_gpg_vstate.work.io_buffer[7] = app_state;
nvm_write((void *) (N_gpg_pstate->histo), G_gpg_vstate.work.io_buffer, sizeof(C_default_Histo));
memmove(G_gpg_vstate.work.io_buffer, C_default_Histo, HISTO_LENGTH);
G_gpg_vstate.work.io_buffer[HISTO_OFFSET_STATE] = app_state;
nvm_write((void *) (N_gpg_pstate->histo), G_gpg_vstate.work.io_buffer, HISTO_LENGTH);
// AID
memmove(G_gpg_vstate.work.io_buffer, C_default_AID, sizeof(C_default_AID));

2
src/gpg_select.c
View File

@ -51,7 +51,7 @@ int gpg_apdu_select() {
}
gpg_io_discard(0);
if (N_gpg_pstate->histo[7] != STATE_ACTIVATE) {
if (N_gpg_pstate->histo[HISTO_OFFSET_STATE] != STATE_ACTIVATE) {
sw = SW_STATE_TERMINATED;
} else {
sw = SW_OK;

4
src/gpg_types.h
View File

@ -41,6 +41,8 @@
#define GPG_MIN_PW1_LENGTH 6
#define GPG_MIN_PW3_LENGTH 8
#define HISTO_LENGTH 15
#define HISTO_OFFSET_STATE 12 // 3rd byte from last (buffer size is 15)
#ifdef TARGET_NANOS
#define GPG_KEYS_SLOTS 1
#else
@ -159,7 +161,7 @@ struct gpg_nv_state_s {
/* 4F */
unsigned char AID[16];
/* 5F52 */
unsigned char histo[15];
unsigned char histo[HISTO_LENGTH];
/* C4 */
unsigned char PW_status[4];