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scd:nks: Implement writecert for the Signature card v2.

* scd/iso7816.c (CMD_UPDATE_BINARY): New.
(iso7816_update_binary): New.
* scd/app-nks.c (do_deinit): Factor some code out to...
(flush_fid_cache): new.
(do_writecert): New.
(app_select_nks): Register new handler.
--

This has been backported only to make the following backpoorts easier.
The code is only used in 2.3; for details see the original commit
message.

Signed-off-by: Werner Koch <wk@gnupg.org>
Backported-from-master: c1663c690b
GnuPG-bug-id: 6252
This commit is contained in:
Werner Koch 2020-07-02 18:35:34 +02:00
parent c99870f790
commit fe698586b5
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
3 changed files with 134 additions and 8 deletions

View file

@ -56,6 +56,7 @@
#define CMD_GET_CHALLENGE 0x84
#define CMD_READ_BINARY 0xB0
#define CMD_READ_RECORD 0xB2
#define CMD_UPDATE_BINARY 0xD6
static gpg_error_t
map_sw (int sw)
@ -1025,6 +1026,7 @@ iso7816_read_record_ext (int slot, int recno, int reccount, int short_ef,
return 0;
}
gpg_error_t
iso7816_read_record (int slot, int recno, int reccount, int short_ef,
unsigned char **result, size_t *resultlen)
@ -1032,3 +1034,23 @@ iso7816_read_record (int slot, int recno, int reccount, int short_ef,
return iso7816_read_record_ext (slot, recno, reccount, short_ef,
result, resultlen, NULL);
}
/* Perform an UPDATE BINARY command on card in SLOT. Write DATA of
* length DATALEN to a transparent file at OFFSET. */
gpg_error_t
iso7816_update_binary (int slot, int extended_mode, size_t offset,
const void *data, size_t datalen)
{
int sw;
/* We can only encode 15 bits in p0,p1 to indicate an offset. Thus
* we check for this limit. */
if (offset > 32767)
return gpg_error (GPG_ERR_INV_VALUE);
sw = apdu_send_simple (slot, extended_mode, 0x00, CMD_UPDATE_BINARY,
((offset>>8) & 0xff), (offset & 0xff),
datalen, (const char*)data);
return map_sw (sw);
}