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card-openpgp.c
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card-openpgp.c
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/*
* card-openpgp.c: Support for OpenPGP card
*
* Copyright (C) 2003 Olaf Kirch <[email protected]>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* Specifications:
* (all available from: https://gnupg.org/ftp/specs/)
* https://gnupg.org/ftp/specs/openpgp-card-1.0.pdf (obsolete)
* https://gnupg.org/ftp/specs/openpgp-card-1.1.pdf
* https://gnupg.org/ftp/specs/OpenPGP-smart-card-application-2.0.pdf
* https://gnupg.org/ftp/specs/OpenPGP-smart-card-application-2.1.pdf
* https://gnupg.org/ftp/specs/OpenPGP-smart-card-application-2.2.pdf
* https://gnupg.org/ftp/specs/OpenPGP-smart-card-application-3.0.pdf
* https://gnupg.org/ftp/specs/OpenPGP-smart-card-application-3.1.pdf
* https://gnupg.org/ftp/specs/OpenPGP-smart-card-application-3.2.pdf
* https://gnupg.org/ftp/specs/OpenPGP-smart-card-application-3.3.pdf
* https://gnupg.org/ftp/specs/OpenPGP-smart-card-application-3.3.0.pdf
* https://gnupg.org/ftp/specs/OpenPGP-smart-card-application-3.3.1.pdf
* https://gnupg.org/ftp/specs/OpenPGP-smart-card-application-3.4.pdf
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <time.h>
#include "internal.h"
#include "asn1.h"
#include "cardctl.h"
#include "errors.h"
#ifdef ENABLE_OPENSSL
#include <openssl/sha.h>
#endif /* ENABLE_OPENSSL */
#include "card-openpgp.h"
static const char default_cardname[] = "OpenPGP card";
static const char default_cardname_v1[] = "OpenPGP card v1.x";
static const char default_cardname_v2[] = "OpenPGP card v2.x";
static const char default_cardname_v3[] = "OpenPGP card v3.x";
static const struct sc_atr_table pgp_atrs[] = {
{ "3b:fa:13:00:ff:81:31:80:45:00:31:c1:73:c0:01:00:00:90:00:b1", NULL, default_cardname_v1, SC_CARD_TYPE_OPENPGP_V1, 0, NULL },
{ "3b:da:18:ff:81:b1:fe:75:1f:03:00:31:c5:73:c0:01:40:00:90:00:0c", NULL, default_cardname_v2, SC_CARD_TYPE_OPENPGP_V2, 0, NULL },
{
"3b:da:11:ff:81:b1:fe:55:1f:03:00:31:84:73:80:01:80:00:90:00:e4",
"ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:00:ff:ff:00",
"Gnuk v1.x.x (OpenPGP v2.0)", SC_CARD_TYPE_OPENPGP_GNUK, 0, NULL
},
{ "3b:fc:13:00:00:81:31:fe:15:59:75:62:69:6b:65:79:4e:45:4f:72:33:e1", NULL, "Yubikey NEO (OpenPGP v2.0)", SC_CARD_TYPE_OPENPGP_V2, 0, NULL },
{ "3b:f8:13:00:00:81:31:fe:15:59:75:62:69:6b:65:79:34:d4", NULL, "Yubikey 4 (OpenPGP v2.1)", SC_CARD_TYPE_OPENPGP_V2, 0, NULL },
{ "3b:fd:13:00:00:81:31:fe:15:80:73:c0:21:c0:57:59:75:62:69:4b:65:79:40", NULL, "Yubikey 5 (OpenPGP v3.4)", SC_CARD_TYPE_OPENPGP_V3, 0, NULL },
{ "3b:da:18:ff:81:b1:fe:75:1f:03:00:31:f5:73:c0:01:60:00:90:00:1c", NULL, default_cardname_v3, SC_CARD_TYPE_OPENPGP_V3, 0, NULL },
{ NULL, NULL, NULL, 0, 0, NULL }
};
static struct sc_card_operations *iso_ops;
static struct sc_card_operations pgp_ops;
static struct sc_card_driver pgp_drv = {
"OpenPGP card",
"openpgp",
&pgp_ops,
NULL, 0, NULL
};
static pgp_ec_curves_t ec_curves_openpgp34[] = {
/* OpenPGP 3.4+ Ed25519 and Curve25519 */
{{{1, 3, 6, 1, 4, 1, 3029, 1, 5, 1, -1}}, 255}, /* curve25519 for encryption => CKK_EC_MONTGOMERY */
{{{1, 3, 6, 1, 4, 1, 11591, 15, 1, -1}}, 255}, /* ed25519 for signatures => CKK_EC_EDWARDS */
/* v3.0+ supports: [RFC 4880 & 6637] 0x12 = ECDH, 0x13 = ECDSA */
{{{1, 2, 840, 10045, 3, 1, 7, -1}}, 256}, /* ansiX9p256r1 */
{{{1, 3, 132, 0, 34, -1}}, 384}, /* ansiX9p384r1 */
{{{1, 3, 132, 0, 35, -1}}, 521}, /* ansiX9p521r1 */
{{{1, 3, 36, 3, 3, 2, 8, 1, 1, 7, -1}}, 256}, /* brainpoolP256r1 */
{{{1, 3, 36, 3, 3, 2, 8, 1, 1, 11, -1}}, 384}, /* brainpoolP384r1 */
{{{1, 3, 36, 3, 3, 2, 8, 1, 1, 13, -1}}, 512}, /* brainpoolP512r1 */
{{{-1}}, 0} /* This entry must not be touched. */
};
#ifdef ENABLE_OPENSSL
static pgp_ec_curves_alt_t ec_curves_alt[] = {
{{{1, 3, 6, 1, 4, 1, 3029, 1, 5, 1, -1}}, {{1 ,3 ,101, 110, -1}}, 255}, /* curve25519 CKK_EC_MONTGOMERY X25519 */
{{{1, 3, 6, 1, 4, 1, 11591, 15, 1, -1}}, {{1, 3, 101, 112, -1}}, 255}, /* ed25519 CKK_EC_EDWARDS Ed25519 */
{{{-1}}, {{-1}}, 0} /* This entry must not be touched. */
};
#endif /* ENABLE_OPENSSL */
static pgp_ec_curves_t *ec_curves_openpgp = ec_curves_openpgp34 + 2;
struct sc_object_id curve25519_oid = {{1, 3, 6, 1, 4, 1, 3029, 1, 5, 1, -1}};
/* Gnuk supports NIST, SECG and Curve25519 since version 1.2 */
static pgp_ec_curves_t ec_curves_gnuk[] = {
{{{1, 2, 840, 10045, 3, 1, 7, -1}}, 256}, /* ansiX9p256r1 */
{{{1, 3, 132, 0, 10, -1}}, 256}, /* secp256k1 */
{{{1, 3, 6, 1, 4, 1, 3029, 1, 5, 1, -1}}, 255}, /* curve25519 for encryption => CKK_EC_MONTGOMERY */
{{{1, 3, 6, 1, 4, 1, 11591, 15, 1, -1}}, 255}, /* ed25519 for signatures => CKK_EC_EDWARDS */
{{{-1}}, 0} /* This entry must not be touched. */
};
/*
* The OpenPGP card doesn't have a file system, instead everything
* is stored in data objects that are accessed through GET/PUT.
*
* However, much inside OpenSC's pkcs15 implementation is based on
* the assumption that we have a file system. So we fake one here.
*
* Selecting the MF causes us to select the OpenPGP AID.
*
* Everything else is mapped to "file" IDs.
*/
static int pgp_get_card_features(sc_card_t *card);
static int pgp_finish(sc_card_t *card);
static void pgp_free_blobs(pgp_blob_t *);
static int pgp_get_blob(sc_card_t *card, pgp_blob_t *blob,
unsigned int id, pgp_blob_t **ret);
static pgp_blob_t *pgp_new_blob(sc_card_t *, pgp_blob_t *, unsigned int, sc_file_t *);
static void pgp_free_blob(pgp_blob_t *);
static int pgp_get_pubkey(sc_card_t *, unsigned int, u8 *, size_t);
static int pgp_get_pubkey_pem(sc_card_t *, unsigned int, u8 *, size_t);
static int pgp_enumerate_blob(sc_card_t *card, pgp_blob_t *blob);
// clang-format off
static pgp_do_info_t pgp1x_objects[] = { /* OpenPGP card spec 1.1 */
{ 0x004f, SIMPLE, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ 0x005b, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x005e, SIMPLE, READ_ALWAYS | WRITE_PIN3, sc_get_data, sc_put_data },
{ 0x0065, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, sc_get_data, NULL },
{ 0x006e, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, sc_get_data, NULL },
{ 0x0073, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ 0x007a, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, sc_get_data, NULL },
{ 0x0081, SIMPLE, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ 0x0082, SIMPLE, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ 0x0093, SIMPLE, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ 0x00c0, SIMPLE, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ 0x00c1, SIMPLE, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ 0x00c2, SIMPLE, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ 0x00c3, SIMPLE, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ 0x00c4, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x00c5, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x00c6, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x00c7, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00c8, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00c9, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00ca, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00cb, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00cc, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00cd, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x00ce, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00cf, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00d0, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00e0, CONSTRUCTED, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00e1, CONSTRUCTED, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00e2, CONSTRUCTED, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x0101, SIMPLE, READ_ALWAYS | WRITE_PIN2, sc_get_data, sc_put_data },
{ 0x0102, SIMPLE, READ_ALWAYS | WRITE_PIN3, sc_get_data, sc_put_data },
{ 0x0103, SIMPLE, READ_PIN2 | WRITE_PIN2, sc_get_data, sc_put_data },
{ 0x0104, SIMPLE, READ_PIN3 | WRITE_PIN3, sc_get_data, sc_put_data },
{ 0x3f00, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ 0x5f2d, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x5f35, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x5f50, SIMPLE, READ_ALWAYS | WRITE_PIN3, sc_get_data, sc_put_data },
{ 0x7f49, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ DO_AUTH, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, pgp_get_pubkey, NULL },
{ DO_AUTH_SYM, SIMPLE, READ_ALWAYS | WRITE_PIN3, pgp_get_pubkey_pem, NULL },
{ DO_SIGN, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, pgp_get_pubkey, NULL },
{ DO_SIGN_SYM, SIMPLE, READ_ALWAYS | WRITE_PIN3, pgp_get_pubkey_pem, NULL },
{ DO_ENCR, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, pgp_get_pubkey, NULL },
{ DO_ENCR_SYM, SIMPLE, READ_ALWAYS | WRITE_PIN3, pgp_get_pubkey_pem, NULL },
{ 0, 0, 0, NULL, NULL },
};
static pgp_do_info_t pgp34_objects[] = { /**** OpenPGP card spec 3.4 ****/
{ 0x00d9, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x00da, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x00db, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x00dc, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x00de, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x00de, SIMPLE, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
/* DO FA is CONSTRUCTED in spec; we treat it as SIMPLE for the time being */
{ 0x00fa, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, sc_get_data, NULL },
/* DO FB is CONSTRUCTED in spec; we treat it as SIMPLE for the time being */
{ 0x00fb, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
/* DO FC is CONSTRUCTED in spec; we treat it as SIMPLE for the time being */
{ 0x00fc, SIMPLE, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
/**** OpenPGP card spec 3.3 ****/
{ 0x00f9, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
/**** OpenPGP card spec 3.0 - 3.2 ****/
{ 0x00d6, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x00d7, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x00d8, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
/* DO 7F66 is CONSTRUCTED in spec; we treat it as SIMPLE: no need to parse TLV */
{ 0x7f66, SIMPLE, READ_ALWAYS | WRITE_NEVER, NULL, sc_put_data },
/* DO 7F74 is CONSTRUCTED in spec; we treat it as SIMPLE for the time being */
{ 0x7f74, SIMPLE, READ_ALWAYS | WRITE_NEVER, NULL, sc_put_data },
/**** OpenPGP card spec 2.1 & 2.2 ****/
{ 0x00d5, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
/**** OpenPGP card spec 2.0 ****/
{ 0x004d, CONSTRUCTED, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x004f, SIMPLE, READ_ALWAYS | WRITE_NEVER, sc_get_data, NULL },
{ 0x005b, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x005e, SIMPLE, READ_ALWAYS | WRITE_PIN3, sc_get_data, sc_put_data },
{ 0x0065, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, sc_get_data, NULL },
{ 0x006e, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, sc_get_data, NULL },
{ 0x0073, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ 0x007a, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, sc_get_data, NULL },
{ 0x0081, SIMPLE, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ 0x0082, SIMPLE, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ 0x0093, SIMPLE, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ 0x00c0, SIMPLE, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ 0x00c1, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x00c2, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x00c3, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x00c4, SIMPLE, READ_ALWAYS | WRITE_PIN3, sc_get_data, sc_put_data },
{ 0x00c5, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x00c6, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x00c7, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00c8, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00c9, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00ca, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00cb, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00cc, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00cd, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x00ce, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00cf, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00d0, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00d1, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00d2, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00d3, SIMPLE, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x00f4, CONSTRUCTED, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x0101, SIMPLE, READ_ALWAYS | WRITE_PIN2, sc_get_data, sc_put_data },
{ 0x0102, SIMPLE, READ_ALWAYS | WRITE_PIN3, sc_get_data, sc_put_data },
{ 0x0103, SIMPLE, READ_PIN2 | WRITE_PIN2, sc_get_data, sc_put_data },
{ 0x0104, SIMPLE, READ_PIN3 | WRITE_PIN3, sc_get_data, sc_put_data },
{ 0x3f00, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ 0x5f2d, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x5f35, SIMPLE, READ_ALWAYS | WRITE_PIN3, NULL, sc_put_data },
{ 0x5f48, CONSTRUCTED, READ_NEVER | WRITE_PIN3, NULL, sc_put_data },
{ 0x5f50, SIMPLE, READ_ALWAYS | WRITE_PIN3, sc_get_data, sc_put_data },
{ 0x5f52, SIMPLE, READ_ALWAYS | WRITE_NEVER, sc_get_data, NULL },
/* DO 7F21 is CONSTRUCTED in spec; we treat it as SIMPLE: no need to parse TLV */
{ DO_CERT, SIMPLE, READ_ALWAYS | WRITE_PIN3, sc_get_data, sc_put_data },
{ 0x7f48, CONSTRUCTED, READ_NEVER | WRITE_NEVER, NULL, NULL },
{ 0x7f49, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, NULL, NULL },
{ DO_AUTH, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, pgp_get_pubkey, NULL },
/* The DOs 0xA401, 0xB601, 0xB801 are virtual DOs, they do not represent any real DO.
* However, their R/W access condition may block the process of importing key in pkcs15init.
* So we set their accesses condition as WRITE_PIN3 (writable). */
{ DO_AUTH_SYM, SIMPLE, READ_ALWAYS | WRITE_PIN3, pgp_get_pubkey_pem, NULL },
{ DO_SIGN, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, pgp_get_pubkey, NULL },
{ DO_SIGN_SYM, SIMPLE, READ_ALWAYS | WRITE_PIN3, pgp_get_pubkey_pem, NULL },
{ DO_ENCR, CONSTRUCTED, READ_ALWAYS | WRITE_NEVER, pgp_get_pubkey, NULL },
{ DO_ENCR_SYM, SIMPLE, READ_ALWAYS | WRITE_PIN3, pgp_get_pubkey_pem, NULL },
{ 0, 0, 0, NULL, NULL },
};
// clang-format on
static pgp_do_info_t *pgp33_objects = pgp34_objects + 9;
static pgp_do_info_t *pgp30_objects = pgp34_objects + 10;
static pgp_do_info_t *pgp21_objects = pgp34_objects + 15;
static pgp_do_info_t *pgp20_objects = pgp34_objects + 16;
/**
* Internal: get OpenPGP application identifier from AID DO 004F
*/
static int
get_full_pgp_aid(sc_card_t *card, sc_file_t *file)
{
int r = SC_ERROR_INVALID_ARGUMENTS;
if (file != NULL) {
/* explicitly get the full aid */
r = sc_get_data(card, 0x004F, file->name, sizeof file->name);
file->namelen = MAX(r, 0);
}
return r;
}
/**
* ABI: check if card's ATR matches one of driver's
* or if the OpenPGP application is present on the card.
*/
static int
pgp_match_card(sc_card_t *card)
{
int i;
LOG_FUNC_CALLED(card->ctx);
i = _sc_match_atr(card, pgp_atrs, &card->type);
if (i >= 0) {
card->name = pgp_atrs[i].name;
LOG_FUNC_RETURN(card->ctx, 1);
}
else {
sc_path_t partial_aid;
sc_file_t *file = NULL;
/* select application "OpenPGP" */
sc_format_path("D276:0001:2401", &partial_aid);
partial_aid.type = SC_PATH_TYPE_DF_NAME;
/* OpenPGP card only supports selection *with* requested FCI */
i = iso_ops->select_file(card, &partial_aid, &file);
if (SC_SUCCESS == i) {
card->type = SC_CARD_TYPE_OPENPGP_BASE;
card->name = default_cardname;
if (file->namelen != 16)
(void) get_full_pgp_aid(card, file);
if (file->namelen == 16) {
unsigned char major = BCD2UCHAR(file->name[6]);
switch (major) {
case 1:
card->type = SC_CARD_TYPE_OPENPGP_V1;
card->name = default_cardname_v1;
break;
case 2:
card->type = SC_CARD_TYPE_OPENPGP_V2;
card->name = default_cardname_v2;
break;
case 3:
card->type = SC_CARD_TYPE_OPENPGP_V3;
card->name = default_cardname_v3;
break;
default:
break;
}
}
sc_file_free(file);
LOG_FUNC_RETURN(card->ctx, 1);
}
}
LOG_FUNC_RETURN(card->ctx, 0);
}
/* populate MF - add matching blobs listed in the pgp_objects table */
int populate_blobs_to_mf(sc_card_t *card, struct pgp_priv_data *priv)
{
pgp_do_info_t *info;
for (info = priv->pgp_objects; (info != NULL) && (info->id > 0); info++) {
if (((info->access & READ_MASK) != READ_NEVER) && (info->get_fn != NULL)) {
pgp_blob_t *child = NULL;
sc_file_t *file = sc_file_new();
child = pgp_new_blob(card, priv->mf, info->id, file);
/* catch out of memory condition */
if (child == NULL) {
sc_file_free(file);
LOG_FUNC_RETURN(card->ctx, SC_ERROR_OUT_OF_MEMORY);
}
}
}
LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
}
/**
* ABI: initialize driver & allocate private data.
*/
static int
pgp_init(sc_card_t *card)
{
struct pgp_priv_data *priv;
sc_path_t path;
sc_file_t *file = NULL;
int r, i;
LOG_FUNC_CALLED(card->ctx);
priv = calloc (1, sizeof *priv);
if (!priv)
LOG_FUNC_RETURN(card->ctx, SC_ERROR_OUT_OF_MEMORY);
card->drv_data = priv;
card->cla = 0x00;
/* select application "OpenPGP" */
sc_format_path("D276:0001:2401", &path);
path.type = SC_PATH_TYPE_DF_NAME;
if ((r = iso_ops->select_file(card, &path, &file)) < 0) {
sc_file_free(file);
pgp_finish(card);
LOG_FUNC_RETURN(card->ctx, SC_ERROR_INVALID_CARD);
}
/* defensive programming check */
if (!file) {
pgp_finish(card);
LOG_FUNC_RETURN(card->ctx, SC_ERROR_INVALID_CARD);
}
if (file->namelen != 16) {
/* explicitly get the full aid */
r = get_full_pgp_aid(card, file);
if (r < 0) {
sc_file_free(file);
pgp_finish(card);
LOG_FUNC_RETURN(card->ctx, SC_ERROR_INVALID_CARD);
}
}
/* read information from AID */
if (file->namelen == 16) {
static char card_name[SC_MAX_APDU_BUFFER_SIZE] = "OpenPGP card";
/* OpenPGP card spec 1.1, 2.x & 3.x, section 4.2.1 & 4.1.2.1 */
priv->bcd_version = bebytes2ushort(file->name + 6);
card->version.fw_major = card->version.hw_major = BCD2UCHAR(file->name[6]);
card->version.fw_minor = card->version.hw_minor = BCD2UCHAR(file->name[7]);
/* for "standard" cards, include detailed card version & serial no. in card name */
if (card->name == default_cardname_v1 ||
card->name == default_cardname_v2 ||
card->name == default_cardname_v3) {
snprintf(card_name, sizeof(card_name),
"OpenPGP card v%u.%u (%04X %08lX)",
card->version.hw_major, card->version.hw_minor,
bebytes2ushort(file->name + 8),
bebytes2ulong(file->name + 10));
}
else if (card->name != NULL) {
/* for other cards, append serial number to the card name */
snprintf(card_name, sizeof(card_name),
"%s (%04X %08lX)",
card->name,
bebytes2ushort(file->name + 8),
bebytes2ulong(file->name + 10));
}
card->name = card_name;
/* GPG compatibility: set card's serial number to manufacturer ID + serial number */
memcpy(card->serialnr.value, file->name + 8, 6);
card->serialnr.len = 6;
} else {
/* set detailed card version */
switch (card->type) {
case SC_CARD_TYPE_OPENPGP_V3:
priv->bcd_version = OPENPGP_CARD_3_0;
break;
case SC_CARD_TYPE_OPENPGP_GNUK:
case SC_CARD_TYPE_OPENPGP_V2:
priv->bcd_version = OPENPGP_CARD_2_0;
break;
default:
priv->bcd_version = OPENPGP_CARD_1_1;
break;
}
}
/* set pointer to correct list of card objects */
priv->pgp_objects = (priv->bcd_version < OPENPGP_CARD_2_0) ? pgp1x_objects
: (priv->bcd_version < OPENPGP_CARD_2_1) ? pgp20_objects
: (priv->bcd_version < OPENPGP_CARD_3_0) ? pgp21_objects
: (priv->bcd_version < OPENPGP_CARD_3_3) ? pgp30_objects
: (priv->bcd_version < OPENPGP_CARD_3_4) ? pgp33_objects
: pgp34_objects;
/* With gnuk, we use different curves */
if (card->type == SC_CARD_TYPE_OPENPGP_GNUK) {
priv->ec_curves = ec_curves_gnuk;
} else if (priv->bcd_version >= OPENPGP_CARD_3_4) {
priv->ec_curves = ec_curves_openpgp34;
} else {
priv->ec_curves = ec_curves_openpgp;
}
/* change file path to MF for reuse in MF */
sc_format_path("3f00", &file->path);
/* set up the root of our fake file tree */
/* Transfers ownership of the file to the priv->mf structure */
priv->mf = pgp_new_blob(card, NULL, 0x3f00, file);
if (!priv->mf) {
sc_file_free(file);
pgp_finish(card);
LOG_FUNC_RETURN(card->ctx, SC_ERROR_OUT_OF_MEMORY);
}
/* select MF */
priv->current = priv->mf;
r = populate_blobs_to_mf(card, priv);
if (r < 0) {
pgp_finish(card);
LOG_FUNC_RETURN(card->ctx, r);
}
/* get card_features from ATR & DOs */
if (pgp_get_card_features(card)) {
LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
}
/* if algorithm attributes can be changed,
* add supported algorithms based on specification for pkcs15-init */
if ((priv->ext_caps & EXT_CAP_ALG_ATTR_CHANGEABLE) &&
(strcmp(card->ctx->app_name, "pkcs15-init") == 0)) {
unsigned long flags_rsa, flags_ecc, ext_flags;
/* OpenPGP card spec 1.1 & 2.x, section 7.2.9 & 7.2.10 / v3.x section 7.2.11 & 7.2.12 */
flags_rsa = SC_ALGORITHM_RSA_PAD_PKCS1|
SC_ALGORITHM_RSA_HASH_NONE|
SC_ALGORITHM_ONBOARD_KEY_GEN;
flags_ecc = SC_ALGORITHM_ECDSA_RAW|
SC_ALGORITHM_ECDH_CDH_RAW|
SC_ALGORITHM_ECDSA_HASH_NONE|
SC_ALGORITHM_ONBOARD_KEY_GEN;
ext_flags = SC_ALGORITHM_EXT_EC_NAMEDCURVE;
switch (card->type) {
case SC_CARD_TYPE_OPENPGP_V3:
/* RSA 1024 was removed for v3+ */
_sc_card_add_rsa_alg(card, 4096, flags_rsa, 0);
_sc_card_add_rsa_alg(card, 3072, flags_rsa, 0);
/* fallthrough */
case SC_CARD_TYPE_OPENPGP_GNUK:
_sc_card_add_rsa_alg(card, 2048, flags_rsa, 0);
for (i=0; priv->ec_curves[i].oid.value[0] >= 0; i++)
{
_sc_card_add_ec_alg(card, priv->ec_curves[i].size,
flags_ecc, ext_flags, &priv->ec_curves[i].oid);
}
break;
case SC_CARD_TYPE_OPENPGP_V2:
default:
_sc_card_add_rsa_alg(card, 1024, flags_rsa, 0);
_sc_card_add_rsa_alg(card, 2048, flags_rsa, 0);
_sc_card_add_rsa_alg(card, 3072, flags_rsa, 0);
_sc_card_add_rsa_alg(card, 4096, flags_rsa, 0);
break;
}
}
LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
}
/**
* Internal: parse historic bytes to get card capabilities.
*/
static void
pgp_parse_hist_bytes(sc_card_t *card, u8 *ctlv, size_t ctlv_len)
{
struct pgp_priv_data *priv = DRVDATA(card);
const u8 *ptr;
/* IS07816-4 hist bytes: 3rd function table */
if ((ptr = sc_compacttlv_find_tag(ctlv, ctlv_len, 0x73, NULL)) != NULL) {
/* bit 0x40 in byte 3 of TL 0x73 means "extended Le/Lc" */
if (ptr[2] & 0x40) {
card->caps |= SC_CARD_CAP_APDU_EXT;
priv->ext_caps |= EXT_CAP_APDU_EXT;
}
/* bit 0x80 in byte 3 of TL 0x73 means "Command chaining" */
if (ptr[2] & 0x80) {
priv->ext_caps |= EXT_CAP_CHAINING;
}
}
if ((priv->bcd_version >= OPENPGP_CARD_3_0) &&
((ptr = sc_compacttlv_find_tag(ctlv, ctlv_len, 0x31, NULL)) != NULL)) {
// ToDo ...
}
}
/**
* Internal: parse an algorithm attributes DO
**/
static int
pgp_parse_algo_attr_blob(sc_card_t *card, const pgp_blob_t *blob,
sc_cardctl_openpgp_keygen_info_t *key_info)
{
struct pgp_priv_data *priv = DRVDATA(card);
struct sc_object_id oid;
unsigned int j, r;
LOG_FUNC_CALLED(card->ctx);
if (blob == NULL || blob->data == NULL || blob->len == 0 ||
blob->id < 0x00c1 || blob->id > 0x00c3 || key_info == NULL) {
LOG_FUNC_RETURN(card->ctx, SC_ERROR_INCORRECT_PARAMETERS);
}
key_info->key_id = blob->id - 0x00c0; /* attribute algorithm blobs are C1 - C3 */
switch (blob->data[0]) {
case SC_OPENPGP_KEYALGO_RSA:
if (blob->len < 5) {
LOG_FUNC_RETURN(card->ctx, SC_ERROR_INCORRECT_PARAMETERS);
}
key_info->algorithm = SC_OPENPGP_KEYALGO_RSA;
key_info->u.rsa.modulus_len = bebytes2ushort(blob->data + 1);
key_info->u.rsa.exponent_len = bebytes2ushort(blob->data + 3);
key_info->u.rsa.keyformat = (blob->len > 5)
? blob->data[5]
: SC_OPENPGP_KEYFORMAT_RSA_STD;
break;
case SC_OPENPGP_KEYALGO_ECDH:
case SC_OPENPGP_KEYALGO_ECDSA:
case SC_OPENPGP_KEYALGO_EDDSA:
/* SC_OPENPGP_KEYALGO_ECDH || SC_OPENPGP_KEYALGO_ECDSA || SC_OPENPGP_KEYALGO_EDDSA */
key_info->algorithm = blob->data[0];
/* last byte is set to 0xFF if pubkey import is supported */
if (blob->data[blob->len-1] == SC_OPENPGP_KEYFORMAT_EC_STDPUB){
if (blob->len < 3)
return SC_ERROR_INCORRECT_PARAMETERS;
key_info->u.ec.oid_len = blob->len - 2;
key_info->u.ec.keyformat = SC_OPENPGP_KEYFORMAT_EC_STDPUB;
}
else {
/* otherwise, last byte could be 00, so let's ignore it, as
* it is not part of OID */
if (blob->len < 2)
return SC_ERROR_INCORRECT_PARAMETERS;
if (blob->data[blob->len-1] == SC_OPENPGP_KEYFORMAT_EC_STD)
key_info->u.ec.oid_len = blob->len - 2;
else
key_info->u.ec.oid_len = blob->len - 1;
key_info->u.ec.keyformat = SC_OPENPGP_KEYFORMAT_EC_STD;
}
/* Create copy of oid from blob */
sc_init_oid(&oid);
r = sc_asn1_decode_object_id(&blob->data[1], key_info->u.ec.oid_len, &oid);
/* decoding failed, return sc_asn1_decode_object_id error code */
if (r > 0){
return r;
}
/* compare with list of supported ec_curves */
for (j = 0; priv->ec_curves[j].oid.value[0] >= 0; j++) {
if (sc_compare_oid(&priv->ec_curves[j].oid, &oid)) {
sc_log(card->ctx, "Matched EC oid %s (%d)",
sc_dump_oid(&oid), j);
key_info->u.ec.oid = priv->ec_curves[j].oid;
key_info->u.ec.key_length = priv->ec_curves[j].size;
break;
}
}
/* We did not match the OID */
if (priv->ec_curves[j].oid.value[0] < 0) {
LOG_FUNC_RETURN(card->ctx, SC_ERROR_UNKNOWN_DATA_RECEIVED);
}
break;
default:
LOG_FUNC_RETURN(card->ctx, SC_ERROR_NOT_SUPPORTED);
}
LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
}
int _pgp_handle_curve25519(sc_card_t *card,
sc_cardctl_openpgp_keygen_info_t key_info, unsigned int do_num)
{
if (!sc_compare_oid(&key_info.u.ec.oid, &curve25519_oid))
return 0;
/* CKM_XEDDSA supports both Sign and Derive, but
* OpenPGP card supports only derivation using these
* keys as far as I know */
_sc_card_add_xeddsa_alg(card, key_info.u.ec.key_length,
SC_ALGORITHM_ECDH_CDH_RAW | SC_ALGORITHM_ONBOARD_KEY_GEN, 0, &key_info.u.ec.oid);
sc_log(card->ctx, "DO %uX: Added XEDDSA algorithm (%d), mod_len = %zu",
do_num, SC_ALGORITHM_XEDDSA, key_info.u.ec.key_length);
return 1;
}
int _pgp_add_algo(sc_card_t *card, sc_cardctl_openpgp_keygen_info_t key_info, unsigned int do_num)
{
unsigned long flags = 0, ext_flags = 0;
/* [RFC 4880], [draft-ietf-openpgp-crypto-refresh] */
switch (key_info.algorithm) {
case SC_OPENPGP_KEYALGO_RSA:
/* OpenPGP card spec 1.1 & 2.x, section 7.2.9 & 7.2.10 /
* v3.x section 7.2.11 & 7.2.12 */
flags = SC_ALGORITHM_RSA_PAD_PKCS1 |
SC_ALGORITHM_RSA_HASH_NONE |
SC_ALGORITHM_ONBOARD_KEY_GEN; /* key gen on card */
_sc_card_add_rsa_alg(card, key_info.u.rsa.modulus_len, flags, 0);
sc_log(card->ctx, "DO %uX: Added RSA algorithm, mod_len = %"
SC_FORMAT_LEN_SIZE_T"u",
do_num, key_info.u.rsa.modulus_len);
break;
case SC_OPENPGP_KEYALGO_ECDH:
/* The montgomery curve (curve25519) needs to go through
* different paths, otherwise we handle it as a normal EC key */
if (_pgp_handle_curve25519(card, key_info, do_num))
break;
/* fall through */
case SC_OPENPGP_KEYALGO_ECDSA:
/* v3.0+: ECC [RFC 4880 & 6637] */
/* Allow curve to be used by both ECDH and ECDSA.
* pgp_init set these flags the same way */
flags = SC_ALGORITHM_ECDH_CDH_RAW;
flags |= SC_ALGORITHM_ECDSA_RAW;
flags |= SC_ALGORITHM_ECDSA_HASH_NONE;
flags |= SC_ALGORITHM_ONBOARD_KEY_GEN;
ext_flags = SC_ALGORITHM_EXT_EC_NAMEDCURVE;
_sc_card_add_ec_alg(card, key_info.u.ec.key_length, flags, ext_flags,
&key_info.u.ec.oid);
sc_log(card->ctx, "DO %uX: Added EC algorithm (%d), mod_len = %zu" ,
do_num, key_info.algorithm, key_info.u.ec.key_length);
break;
case SC_OPENPGP_KEYALGO_EDDSA:
/* EdDSA from draft-ietf-openpgp-rfc4880bis-08 */
/* Handle Yubikey bug, that in DO FA curve25519 has EDDSA algo */
if (_pgp_handle_curve25519(card, key_info, do_num))
break;
_sc_card_add_eddsa_alg(card, key_info.u.ec.key_length,
SC_ALGORITHM_EDDSA_RAW | SC_ALGORITHM_ONBOARD_KEY_GEN, 0, &key_info.u.ec.oid);
sc_log(card->ctx, "DO %uX: Added EDDSA algorithm (%d), mod_len = %zu" ,
do_num, key_info.algorithm, key_info.u.ec.key_length);
break;
default:
sc_log(card->ctx, "DO %uX: Unknown algorithm ID (%d)" ,
do_num, key_info.algorithm);
/* return "false" if we do not understand algo */
return 0;
}
/* return true */
return 1;
}
/**
* Internal: get features of the card: capabilities, ...
*/
static int
pgp_get_card_features(sc_card_t *card)
{
struct pgp_priv_data *priv = DRVDATA(card);
u8 *hist_bytes = card->reader->atr_info.hist_bytes;
size_t hist_bytes_len = card->reader->atr_info.hist_bytes_len;
unsigned int i;
pgp_blob_t *blob, *blob6e, *blob73, *blobfa;
int handled_algos = 0;
LOG_FUNC_CALLED(card->ctx);
/* parse card capabilities from historical bytes in ATR */
if (hist_bytes_len > 0) {
/* category indicator 0x00, 0x10 or 0x80 => compact TLV (ISO) */
switch (hist_bytes[0]) {
case 0x00:
if (hist_bytes_len > 4) {
pgp_parse_hist_bytes(card, hist_bytes+1, hist_bytes_len-4);
}
break;
case 0x80:
if (hist_bytes_len > 1) {
pgp_parse_hist_bytes(card, hist_bytes+1, hist_bytes_len-1);
}
break;
case 0x10:
if (hist_bytes_len > 2) {
pgp_parse_hist_bytes(card, hist_bytes+2, hist_bytes_len-2);
}
break;
}
}
/* v1.1 does not support lifecycle via ACTIVATE & TERMINATE: set default */
priv->ext_caps &= ~EXT_CAP_LCS;
if (priv->bcd_version >= OPENPGP_CARD_2_0) {
/* get card capabilities from "historical bytes" DO */
if ((pgp_get_blob(card, priv->mf, 0x5f52, &blob) >= 0) &&
(blob->data != NULL) && (blob->data[0] == 0x00)) {
if (blob->len > 4) {
pgp_parse_hist_bytes(card, blob->data+1, blob->len-4);
}
/* get card status from historical bytes status indicator */
if ((blob->data[0] == 0x00) && (blob->len >= 4)) {
priv->state = blob->data[blob->len-3];
/* state not CARD_STATE_UNKNOWN => LCS supported */
if (priv->state != CARD_STATE_UNKNOWN)
priv->ext_caps |= EXT_CAP_LCS;
}
}
}
if (priv->bcd_version >= OPENPGP_CARD_3_1) {
card->caps |= SC_CARD_CAP_ISO7816_PIN_INFO;
}
if (priv->bcd_version >= OPENPGP_CARD_3_4) {
/* Parse supported algorithms from Algorithm Information DO
* see OpenPGP card spec 3.4 section 4.4.3.11 */
if (pgp_get_blob(card, priv->mf, 0x00fa, &blobfa) >= 0) {
pgp_blob_t *child;
pgp_enumerate_blob(card, blobfa);
/* There will be multiple children with the same ID, but
* different algos, so we need to iterate over all of them */
for (child = blobfa->files; child; child = child->next) {
if ((child->id < 0x00c1) || (child->id > 0x00c3))
continue;
sc_cardctl_openpgp_keygen_info_t key_info;
if (pgp_parse_algo_attr_blob(card, child, &key_info) >= 0)
handled_algos += _pgp_add_algo(card, key_info, 0x00fa);
}
}
}
/* v1.1 & v2.x: special DOs are limited to 254 bytes */
priv->max_specialDO_size = 254;
if ((pgp_get_blob(card, priv->mf, 0x006e, &blob6e) >= 0) &&
(pgp_get_blob(card, blob6e, 0x0073, &blob73) >= 0)) {
/* get "extended capabilities" DO */
if ((pgp_get_blob(card, blob73, 0x00c0, &blob) >= 0) &&
(blob->data != NULL) && (blob->len > 0)) {
/* v2.0+: bit 0x04 in first byte means "algorithm attributes changeable" */
if ((blob->data[0] & 0x04) &&
(priv->bcd_version >= OPENPGP_CARD_2_0))
priv->ext_caps |= EXT_CAP_ALG_ATTR_CHANGEABLE;
/* bit 0x08 in first byte means "support for private use DOs" */
if (blob->data[0] & 0x08)
priv->ext_caps |= EXT_CAP_PRIVATE_DO;
/* bit 0x10 in first byte means "support for CHV status byte changeable" */
if (blob->data[0] & 0x10)
priv->ext_caps |= EXT_CAP_C4_CHANGEABLE;
/* bit 0x20 in first byte means "support for Key Import" */
if (blob->data[0] & 0x20)
priv->ext_caps |= EXT_CAP_KEY_IMPORT;
/* bit 0x40 in first byte means "support for Get Challenge" */
if (blob->data[0] & 0x40) {
card->caps |= SC_CARD_CAP_RNG;
priv->ext_caps |= EXT_CAP_GET_CHALLENGE;
}
/* v2.0+: bit 0x80 in first byte means "support Secure Messaging" */
if ((blob->data[0] & 0x80) &&
(priv->bcd_version >= OPENPGP_CARD_2_0))
priv->ext_caps |= EXT_CAP_SM;
if ((priv->bcd_version >= OPENPGP_CARD_2_0) && (blob->len >= 10)) {
/* v2.0+: max. challenge size is at bytes 3-4 */
priv->max_challenge_size = bebytes2ushort(blob->data + 2);
/* v2.0+: max. cert size it at bytes 5-6 */
priv->max_cert_size = bebytes2ushort(blob->data + 4);
if (priv->bcd_version < OPENPGP_CARD_3_0) {
/* v2.x: SM algorithm is at byte 2: 0 == 3DES */
priv->sm_algo = blob->data[1];
if ((priv->sm_algo == SM_ALGO_NONE) && (priv->ext_caps & EXT_CAP_SM))
priv->sm_algo = SM_ALGO_3DES;
/* v2.x: max. send/receive sizes are at bytes 7-8 resp. 9-10 */
card->max_send_size = bebytes2ushort(blob->data + 6);
card->max_recv_size = bebytes2ushort(blob->data + 8);
}
else {
/* v3.0+: SM algorithm is at byte 2: 0 == UNKNOWN */
priv->sm_algo = blob->data[1];
if ((priv->sm_algo == SM_ALGO_NONE) && (priv->ext_caps & EXT_CAP_SM))
priv->sm_algo = SM_ALGO_UNKNOWN;
/* v3.0+: max. size of special DOs is at bytes 7-8 */
priv->max_specialDO_size = bebytes2ushort(blob->data + 6);
}
if (priv->bcd_version >= OPENPGP_CARD_3_3 && (blob->len >= 10)) {
/* v3.3+: MSE for key numbers 2(DEC) and 3(AUT) supported */
if (blob->data[9])
priv->ext_caps |= EXT_CAP_MSE;
}
}
}
/* get max. PIN length from "CHV status bytes" DO */
if ((pgp_get_blob(card, blob73, 0x00c4, &blob) >= 0) &&
(blob->data != NULL) && (blob->len > 1)) {
/* 2nd byte in "CHV status bytes" DO means "max. PIN length" */
card->max_pin_len = blob->data[1];
}
if (priv->bcd_version >= OPENPGP_CARD_3_0) {
/* v3.0+: get length info from "extended length information" DO */
if ((pgp_get_blob(card, blob6e, 0x7f66, &blob) >= 0) &&
(blob->data != NULL) && (blob->len >= 8)) {
/* kludge: treat as SIMPLE DO and use appropriate offsets */
card->max_send_size = bebytes2ushort(blob->data + 2);
card->max_recv_size = bebytes2ushort(blob->data + 6);
}
}
/* if we found at least one usable algo, let's skip other ways to find them */
if (handled_algos) {
sc_log(card->ctx, "Algo list populated from Algorithm Information DO");
LOG_FUNC_RETURN(card->ctx, handled_algos);
}
/* get _current_ algorithms & key lengths from "algorithm attributes" DOs
*
* All available algorithms should be already provided by pgp_init. However, if another
* algorithm is found in the "algorithm attributes" DOs, it is supported by the card as
* well and therefore added
* see OpenPGP card spec 1.1 & 2.x section 4.3.3.6 / v3.x section 4.4.3.7 */
for (i = 0x00c1; i <= 0x00c3; i++) {
sc_cardctl_openpgp_keygen_info_t key_info;
sc_log(card->ctx, "Parsing algorithm attributes DO %uX" , i);
/* OpenPGP card spec 1.1 & 2.x section 4.3.3.6 / v3.x section 4.4.3.7 */
if ((pgp_get_blob(card, blob73, i, &blob) >= 0) &&
(pgp_parse_algo_attr_blob(card, blob, &key_info) >= 0)) {
_pgp_add_algo(card, key_info, i);
}
}
}
LOG_FUNC_RETURN(card->ctx, handled_algos);
}
/**
* ABI: terminate driver & free private data.
*/
static int
pgp_finish(sc_card_t *card)
{
if (card != NULL) {
struct pgp_priv_data *priv = DRVDATA(card);
if (priv != NULL) {
/* delete fake file hierarchy */
pgp_free_blobs(priv->mf);
/* delete private data */
free(priv);
}
card->drv_data = NULL;
}
return SC_SUCCESS;
}
/**
* Internal: fill a blob's data.
*/
static int
pgp_set_blob(pgp_blob_t *blob, const u8 *data, size_t len)
{
if (blob->data)
free(blob->data);
blob->data = NULL;
blob->len = 0;
blob->status = 0;
if (len > 0) {
void *tmp = calloc(1, len);
if (tmp == NULL)
return SC_ERROR_OUT_OF_MEMORY;
blob->data = tmp;
blob->len = (unsigned int)len;