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opensc/src/pkcs15init/pkcs15-cardos.c

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/*
* CardOS specific operation for PKCS15 initialization
*
* Copyright (C) 2005 Nils Larsch <nils@larsch.net>
* Copyright (C) 2002 Olaf Kirch <okir@suse.de>
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <stdarg.h>
#include "libopensc/opensc.h"
#include "libopensc/cardctl.h"
#include "libopensc/log.h"
#include "libopensc/cards.h"
#include "libopensc/asn1.h"
#include "pkcs15-init.h"
#include "profile.h"
#ifndef MIN
# define MIN(a, b) (((a) < (b))? (a) : (b))
#endif
struct tlv {
unsigned char * base;
unsigned char * end;
unsigned char * current;
unsigned char * next;
};
/*
* Local functions
*/
static int cardos_store_pin(sc_profile_t *profile, sc_card_t *card,
sc_pkcs15_auth_info_t *auth_info, int puk_id,
const u8 *pin, size_t pin_len);
static int cardos_create_sec_env(sc_profile_t *, sc_card_t *,
unsigned int, unsigned int);
static int cardos_put_key(struct sc_profile *, sc_pkcs15_card_t *,
int, sc_pkcs15_prkey_info_t *,
struct sc_pkcs15_prkey_rsa *);
static int cardos_key_algorithm(unsigned int, size_t, int *);
static int cardos_extract_pubkey(sc_card_t *, sc_pkcs15_pubkey_t *,
sc_file_t *, int);
static int do_cardos_extract_pubkey(sc_card_t *card, int nr, u8 tag,
sc_pkcs15_bignum_t *bn);
static int cardos_have_verifyrc_package(sc_card_t *card);
/* Object IDs for PIN objects.
* SO PIN = 0x01, SO PUK = 0x02
* each user pin is 2*N+1, each corresponding PUK is 2*N+2
*/
#define CARDOS_PIN_ID_MIN 1
#define CARDOS_PIN_ID_MAX 15
#define CARDOS_KEY_ID_MIN 16
#define CARDOS_KEY_ID_MAX 31
#define CARDOS_AC_NEVER 0xFF
#define CARDOS_ALGO_RSA 0x08
#define CARDOS_ALGO_RSA_PURE 0x0C
#define CARDOS_ALGO_RSA_SIG 0x88
#define CARDOS_ALGO_RSA_PURE_SIG 0x8C
#define CARDOS_ALGO_RSA_SIG_SHA1 0xC8
#define CARDOS_ALGO_RSA_PURE_SIG_SHA1 0xCC
#define CARDOS_ALGO_EXT_RSA_PURE 0x0a
#define CARDOS_ALGO_EXT_RSA_SIG_PURE 0x8a
#define CARDOS_ALGO_PIN 0x87
static void tlv_init(struct tlv *tlv, u8 *base, size_t size)
{
tlv->base = base;
tlv->end = base + size;
tlv->current = tlv->next = base;
}
static void tlv_next(struct tlv *tlv, u8 tag)
{
assert(tlv->next + 2 < tlv->end);
tlv->current = tlv->next;
*(tlv->next++) = tag;
*(tlv->next++) = 0;
}
static void tlv_add(struct tlv *tlv, u8 val)
{
assert(tlv->next + 1 < tlv->end);
*(tlv->next++) = val;
tlv->current[1]++;
}
static size_t
tlv_len(struct tlv *tlv)
{
return tlv->next - tlv->base;
}
/*
* Try to delete pkcs15 structure
* This is not quite the same as erasing the whole token, but
* it's close enough to be useful.
*/
static int
cardos_erase(struct sc_profile *profile, sc_pkcs15_card_t *p15card)
{
return sc_pkcs15init_erase_card_recursively(p15card, profile);
}
/*
* Create the Application DF
*/
static int
cardos_create_dir(sc_profile_t *profile, sc_pkcs15_card_t *p15card, sc_file_t *df)
{
int r;
/* Create the application DF */
if ((r = sc_pkcs15init_create_file(profile, p15card, df)) < 0)
return r;
if ((r = sc_select_file(p15card->card, &df->path, NULL)) < 0)
return r;
/* Create a default security environment for this DF.
* This SE automatically becomes the current SE when the
* DF is selected. */
if ((r = cardos_create_sec_env(profile, p15card->card, 0x01, 0x00)) < 0)
return r;
return 0;
}
/*
* Caller passes in a suggested PIN reference.
* See if it's good, and if it isn't, propose something better
*/
static int
cardos_select_pin_reference(sc_profile_t *profile, sc_pkcs15_card_t *p15card,
sc_pkcs15_auth_info_t *auth_info)
{
int preferred, current;
if (auth_info->auth_type != SC_PKCS15_PIN_AUTH_TYPE_PIN)
return SC_ERROR_OBJECT_NOT_VALID;
if ((current = auth_info->attrs.pin.reference) < 0)
current = CARDOS_PIN_ID_MIN;
if (auth_info->attrs.pin.flags & SC_PKCS15_PIN_FLAG_SO_PIN) {
preferred = 1;
if (current > preferred)
return SC_ERROR_TOO_MANY_OBJECTS;
} else {
preferred = current;
/* PINs are even numbered, PUKs are odd */
if (!(preferred & 1))
preferred++;
}
if (preferred > CARDOS_PIN_ID_MAX)
return SC_ERROR_TOO_MANY_OBJECTS;
auth_info->attrs.pin.reference = preferred;
return SC_SUCCESS;
}
/*
* Store a PIN
*/
static int
cardos_create_pin(sc_profile_t *profile, sc_pkcs15_card_t *p15card, sc_file_t *df,
sc_pkcs15_object_t *pin_obj,
const u8 *pin, size_t pin_len,
const u8 *puk, size_t puk_len)
{
sc_pkcs15_auth_info_t *auth_info = (sc_pkcs15_auth_info_t *) pin_obj->data;
struct sc_card *card = p15card->card;
unsigned int puk_id = CARDOS_AC_NEVER;
int r;
if (!pin || !pin_len)
return SC_ERROR_INVALID_ARGUMENTS;
if (auth_info->auth_type != SC_PKCS15_PIN_AUTH_TYPE_PIN)
return SC_ERROR_OBJECT_NOT_VALID;
r = sc_select_file(card, auth_info->attrs.pin.reference & 0x80 ? &df->path : sc_get_mf_path(), NULL);
if (r < 0)
return r;
if (puk && puk_len) {
struct sc_pkcs15_auth_info puk_ainfo;
sc_profile_get_pin_info(profile,
SC_PKCS15INIT_USER_PUK, &puk_ainfo);
puk_ainfo.attrs.pin.reference = puk_id = auth_info->attrs.pin.reference + 1;
r = cardos_store_pin(profile, card,
&puk_ainfo, CARDOS_AC_NEVER,
puk, puk_len);
}
if (r >= 0) {
r = cardos_store_pin(profile, card,
auth_info, puk_id, pin, pin_len);
}
return r;
}
/*
* Select a key reference
*/
static int
cardos_select_key_reference(sc_profile_t *profile, sc_pkcs15_card_t *p15card,
sc_pkcs15_prkey_info_t *key_info)
{
if (key_info->key_reference < CARDOS_KEY_ID_MIN)
key_info->key_reference = CARDOS_KEY_ID_MIN;
if (key_info->key_reference > CARDOS_KEY_ID_MAX)
return SC_ERROR_TOO_MANY_OBJECTS;
return 0;
}
/*
* Create a private key object.
* This is a no-op.
*/
static int
cardos_create_key(sc_profile_t *profile, sc_pkcs15_card_t *p15card,
sc_pkcs15_object_t *obj)
{
return 0;
}
/*
* Store a private key object.
*/
static int
cardos_store_key(sc_profile_t *profile, sc_pkcs15_card_t *p15card,
sc_pkcs15_object_t *obj,
sc_pkcs15_prkey_t *key)
{
struct sc_context *ctx = p15card->card->ctx;
sc_pkcs15_prkey_info_t *key_info = (sc_pkcs15_prkey_info_t *) obj->data;
struct sc_file *file = NULL;
int algorithm = 0, r;
if (obj->type != SC_PKCS15_TYPE_PRKEY_RSA) {
sc_log(ctx, "CardOS supports RSA keys only.");
return SC_ERROR_NOT_SUPPORTED;
}
if (cardos_key_algorithm(key_info->usage, key_info->modulus_length, &algorithm) < 0) {
sc_log(ctx, "CardOS does not support keys "
"that can both sign _and_ decrypt.");
return SC_ERROR_NOT_SUPPORTED;
}
r = sc_select_file(p15card->card, &key_info->path, &file);
if (r) {
sc_log(ctx, "Failed to store key: cannot select parent DF");
return r;
}
r = sc_pkcs15init_authenticate(profile, p15card, file, SC_AC_OP_UPDATE);
sc_file_free(file);
if (r) {
sc_log(ctx, "Failed to store key: 'UPDATE' authentication failed");
return r;
}
r = cardos_put_key(profile, p15card, algorithm, key_info, &key->u.rsa);
return r;
}
static void init_key_object(struct sc_pkcs15_prkey_rsa *key,
u8 *data, size_t len)
{
/* Create a key object, initializing components to 0xff */
memset(key, 0x00, sizeof(*key));
memset(data, 0xff, len);
key->modulus.data = data;
key->modulus.len = len;
key->d.data = data;
key->d.len = len;
key->p.len = len >> 1;
key->p.data = data;
key->q.len = len >> 1;
key->q.data = data;
key->iqmp.len = len >> 1;
key->iqmp.data = data;
key->dmp1.len = len >> 1;
key->dmp1.data = data;
key->dmq1.len = len >> 1;
key->dmq1.data = data;
}
/*
* Key generation
*/
static int
cardos_generate_key(sc_profile_t *profile, sc_pkcs15_card_t *p15card,
sc_pkcs15_object_t *obj,
sc_pkcs15_pubkey_t *pubkey)
{
struct sc_context *ctx = p15card->card->ctx;
struct sc_pkcs15_prkey_info *key_info = (sc_pkcs15_prkey_info_t *) obj->data;
struct sc_pkcs15_prkey_rsa key_obj;
struct sc_cardctl_cardos_genkey_info args;
struct sc_file *temp;
u8 abignum[256];
int algorithm = 0, r, delete_it = 0, use_ext_rsa = 0;
size_t keybits, rsa_max_size;
int pin_id = -1;
if (obj->type != SC_PKCS15_TYPE_PRKEY_RSA)
return SC_ERROR_NOT_SUPPORTED;
rsa_max_size = (sc_card_find_rsa_alg(p15card->card, 2048) != NULL) ? 2048 : 1024;
keybits = key_info->modulus_length & ~7UL;
if (keybits > rsa_max_size) {
sc_log(ctx, "Unable to generate key, max size is %lu",
(unsigned long) rsa_max_size);
return SC_ERROR_INVALID_ARGUMENTS;
}
if (keybits > 1024)
use_ext_rsa = 1;
if (cardos_key_algorithm(key_info->usage, keybits, &algorithm) < 0) {
sc_log(ctx, "CardOS does not support keys "
"that can both sign _and_ decrypt.");
return SC_ERROR_NOT_SUPPORTED;
}
if (sc_profile_get_file(profile, "tempfile", &temp) < 0) {
sc_log(ctx, "Profile doesn't define temporary file "
"for key generation.");
return SC_ERROR_NOT_SUPPORTED;
}
pin_id = sc_pkcs15init_get_pin_reference(p15card, profile,
SC_AC_SYMBOLIC, SC_PKCS15INIT_USER_PIN);
if (pin_id >= 0) {
r = sc_pkcs15init_verify_secret(profile, p15card, NULL, SC_AC_CHV, pin_id);
if (r < 0)
return r;
}
if (use_ext_rsa == 0)
temp->ef_structure = SC_FILE_EF_LINEAR_VARIABLE_TLV;
else
temp->ef_structure = SC_FILE_EF_TRANSPARENT;
if ((r = sc_pkcs15init_create_file(profile, p15card, temp)) < 0)
goto out;
delete_it = 1;
init_key_object(&key_obj, abignum, keybits >> 3);
r = cardos_put_key(profile, p15card, algorithm, key_info, &key_obj);
if (r < 0)
goto out;
memset(&args, 0, sizeof(args));
args.key_id = key_info->key_reference;
args.key_bits = keybits;
args.fid = temp->id;
r = sc_card_ctl(p15card->card, SC_CARDCTL_CARDOS_GENERATE_KEY, &args);
if (r < 0)
goto out;
r = cardos_extract_pubkey(p15card->card, pubkey, temp, use_ext_rsa);
out:
if (delete_it != 0)
sc_pkcs15init_rmdir(p15card, profile, temp);
sc_file_free(temp);
if (r < 0) {
if (pubkey->u.rsa.modulus.data)
free (pubkey->u.rsa.modulus.data);
if (pubkey->u.rsa.exponent.data)
free (pubkey->u.rsa.exponent.data);
}
return r;
}
/*
* Object deletion.
*/
static int
cardos_delete_object(sc_profile_t *profile, struct sc_pkcs15_card *p15card,
struct sc_pkcs15_object *obj, const struct sc_path *path)
{
int r = SC_SUCCESS, stored_in_ef = 0, algorithm = 0;
size_t keybits;
sc_file_t *file = NULL;
struct sc_pkcs15_prkey_info *key_info;
struct sc_pkcs15_prkey_rsa key_obj;
struct sc_context *ctx = p15card->card->ctx;
uint8_t abignum[256];
LOG_FUNC_CALLED(ctx);
/*
* If we are deleting a private key, overwrite it so it can't be used.
*/
if ((obj->type & SC_PKCS15_TYPE_CLASS_MASK) == SC_PKCS15_TYPE_PRKEY) {
key_info = obj->data;
keybits = key_info->modulus_length & ~7UL;
init_key_object(&key_obj, abignum, keybits >> 3);
r = cardos_key_algorithm(key_info->usage, keybits, &algorithm);
LOG_TEST_RET(ctx, r, "cardos_key_algorithm failed");
r = sc_select_file(p15card->card, &key_info->path, &file);
LOG_TEST_RET(ctx, r, "Failed to store key: cannot select parent DF");
r = sc_pkcs15init_authenticate(profile, p15card, file, SC_AC_OP_UPDATE);
sc_file_free(file);
LOG_TEST_RET(ctx, r, "Failed to store key: UPDATE authentication failed");
r = cardos_put_key(profile, p15card, algorithm, key_info, &key_obj);
LOG_TEST_RET(ctx, r, "cardos_put_key failed");
}
/* Delete object from the PKCS15 file system. */
if (path->len || path->aid.len) {
r = sc_select_file(p15card->card, path, &file);
if (r != SC_ERROR_FILE_NOT_FOUND)
LOG_TEST_RET(ctx, r, "select object path failed");
stored_in_ef = (file->type != SC_FILE_TYPE_DF);
sc_file_free(file);
}
/* If the object is stored in a normal EF, try to delete the EF. */
if (r == SC_SUCCESS && stored_in_ef) {
r = sc_pkcs15init_delete_by_path(profile, p15card, path);
LOG_TEST_RET(ctx, r, "Failed to delete object by path");
}
LOG_FUNC_RETURN(ctx, SC_SUCCESS);
}
/*
* Store a PIN or PUK
*/
static int
cardos_store_pin(sc_profile_t *profile, sc_card_t *card,
sc_pkcs15_auth_info_t *auth_info, int puk_id,
const u8 *pin, size_t pin_len)
{
struct sc_cardctl_cardos_obj_info args;
unsigned char buffer[256];
unsigned char pinpadded[256];
struct tlv tlv;
unsigned int attempts, minlen, maxlen;
int r, hasverifyrc;
if (auth_info->auth_type != SC_PKCS15_PIN_AUTH_TYPE_PIN)
return SC_ERROR_OBJECT_NOT_VALID;
/* We need to do padding because pkcs15-lib.c does it.
* Would be nice to have a flag in the profile that says
* "no padding required". */
maxlen = MIN(profile->pin_maxlen, sizeof(pinpadded));
if (pin_len > maxlen) {
sc_log(card->ctx,
"invalid pin length: %"SC_FORMAT_LEN_SIZE_T"u (max %u)\n",
pin_len, maxlen);
return SC_ERROR_INVALID_ARGUMENTS;
}
memcpy(pinpadded, pin, pin_len);
while (pin_len < maxlen)
pinpadded[pin_len++] = profile->pin_pad_char;
pin = pinpadded;
attempts = auth_info->tries_left;
minlen = auth_info->attrs.pin.min_length;
tlv_init(&tlv, buffer, sizeof(buffer));
/* object address: class, id */
tlv_next(&tlv, 0x83);
tlv_add(&tlv, 0x00); /* class byte: usage TEST, k=0 */
tlv_add(&tlv, auth_info->attrs.pin.reference & 0x7f);
/* parameters */
tlv_next(&tlv, 0x85);
tlv_add(&tlv, 0x02); /* options byte */
hasverifyrc = cardos_have_verifyrc_package(card);
if (hasverifyrc == 1)
/* Use 9 byte OCI parameters to be able to set VerifyRC bit */
tlv_add(&tlv, 0x04); /* options_2 byte with bit 2 set to return CurrentErrorCounter */
tlv_add(&tlv, attempts & 0xf); /* flags byte */
tlv_add(&tlv, CARDOS_ALGO_PIN); /* algorithm = pin-test */
tlv_add(&tlv, attempts & 0xf); /* errcount = attempts */
/* usecount: not documented, but seems to work like this:
* - value of 0xff means pin can be presented any number
* of times
* - anything less: max # of times before BS object is blocked.
*/
tlv_add(&tlv, 0xff);
/* DEK: not documented, no idea what it means */
tlv_add(&tlv, 0xff);
/* ARA counter: number of times the test object can be used before
* another verification is required (~ user consent)
* (0x00 unlimited usage)
*/
tlv_add(&tlv, 0x00);
tlv_add(&tlv, minlen); /* minlen */
/* AC conditions */
tlv_next(&tlv, 0x86);
tlv_add(&tlv, 0x00); /* use: always */
tlv_add(&tlv, auth_info->attrs.pin.reference); /* change: PIN */
tlv_add(&tlv, puk_id); /* unblock: PUK */
/* data: PIN */
tlv_next(&tlv, 0x8f);
while (pin_len--)
tlv_add(&tlv, *pin++);
args.data = buffer;
args.len = tlv_len(&tlv);
/* ensure we are in the correct lifecycle */
r = sc_pkcs15init_set_lifecycle(card, SC_CARDCTRL_LIFECYCLE_ADMIN);
if (r < 0 && r != SC_ERROR_NOT_SUPPORTED)
return r;
return sc_card_ctl(card, SC_CARDCTL_CARDOS_PUT_DATA_OCI, &args);
}
/*
* Create an empty security environment
*/
static int
cardos_create_sec_env(struct sc_profile *profile, sc_card_t *card,
unsigned int se_id, unsigned int key_id)
{
struct sc_cardctl_cardos_obj_info args;
struct tlv tlv;
unsigned char buffer[64];
int r;
tlv_init(&tlv, buffer, sizeof(buffer));
tlv_next(&tlv, 0x83);
tlv_add(&tlv, se_id);
tlv_next(&tlv, 0x86);
tlv_add(&tlv, 0);
tlv_add(&tlv, 0);
tlv_next(&tlv, 0x8f);
tlv_add(&tlv, key_id);
tlv_add(&tlv, key_id);
tlv_add(&tlv, key_id);
tlv_add(&tlv, key_id);
tlv_add(&tlv, key_id);
tlv_add(&tlv, key_id);
args.data = buffer;
args.len = tlv_len(&tlv);
/* ensure we are in the correct lifecycle */
r = sc_pkcs15init_set_lifecycle(card, SC_CARDCTRL_LIFECYCLE_ADMIN);
if (r < 0 && r != SC_ERROR_NOT_SUPPORTED)
return r;
return sc_card_ctl(card, SC_CARDCTL_CARDOS_PUT_DATA_SECI, &args);
}
/*
* Determine the key algorithm based on the intended usage
* Note that CardOS/M4 does not support keys that can be used
* for signing _and_ decipherment
*/
#define USAGE_ANY_SIGN (SC_PKCS15_PRKEY_USAGE_SIGN|\
SC_PKCS15_PRKEY_USAGE_NONREPUDIATION)
#define USAGE_ANY_DECIPHER (SC_PKCS15_PRKEY_USAGE_DECRYPT|\
SC_PKCS15_PRKEY_USAGE_UNWRAP)
static int cardos_key_algorithm(unsigned int usage, size_t keylen, int *algop)
{
/* if it is sign and decipher, we use decipher and emulate sign */
if (usage & USAGE_ANY_DECIPHER) {
if (keylen <= 1024)
*algop = CARDOS_ALGO_RSA_PURE;
else
*algop = CARDOS_ALGO_EXT_RSA_PURE;
return 0;
}
if (usage & USAGE_ANY_SIGN) {
if (keylen <= 1024)
*algop = CARDOS_ALGO_RSA_PURE_SIG;
else
*algop = CARDOS_ALGO_EXT_RSA_SIG_PURE;
return 0;
}
return -1;
}
/*
* Create a private key object
*/
#define CARDOS_KEY_OPTIONS 0x02
#define CARDOS_KEY_FLAGS 0x00
static int
cardos_store_key_component(sc_card_t *card,
int algorithm,
unsigned int key_id, unsigned int pin_id,
unsigned int num,
const u8 *data, size_t len,
int last, int use_prefix)
{
struct sc_cardctl_cardos_obj_info args;
struct tlv tlv;
unsigned char buffer[256];
#ifdef SET_SM_BYTES
unsigned int n;
#endif
int r;
/* Initialize the TLV encoder */
tlv_init(&tlv, buffer, sizeof(buffer));
/* Object address */
tlv_next(&tlv, 0x83);
tlv_add(&tlv, 0x20|num); /* PSO, n-th component */
tlv_add(&tlv, key_id);
/* Object parameters */
tlv_next(&tlv, 0x85);
tlv_add(&tlv, CARDOS_KEY_OPTIONS|(last? 0x00 : 0x20));
tlv_add(&tlv, CARDOS_KEY_FLAGS);
tlv_add(&tlv, algorithm);
tlv_add(&tlv, 0x00);
tlv_add(&tlv, 0xFF); /* use count */
tlv_add(&tlv, 0xFF); /* DEK (whatever this is) */
tlv_add(&tlv, 0x00);
tlv_add(&tlv, 0x00);
/* AC bytes */
tlv_next(&tlv, 0x86);
tlv_add(&tlv, pin_id); /* AC USE */
tlv_add(&tlv, pin_id); /* AC CHANGE */
tlv_add(&tlv, pin_id); /* UNKNOWN */
tlv_add(&tlv, 0); /* rfu */
tlv_add(&tlv, 0); /* rfu */
tlv_add(&tlv, 0); /* rfu */
tlv_add(&tlv, 0);
#ifdef SET_SM_BYTES
/* it shouldn't be necessary to set the default value */
/* SM bytes */
tlv_next(&tlv, 0x8B);
for (n = 0; n < 16; n++)
tlv_add(&tlv, 0xFF);
#endif
/* key component */
tlv_next(&tlv, 0x8f);
if (use_prefix != 0) {
tlv_add(&tlv, len+1);
tlv_add(&tlv, 0);
}
while (len--)
tlv_add(&tlv, *data++);
args.data = buffer;
args.len = tlv_len(&tlv);
/* ensure we are in the correct lifecycle */
r = sc_pkcs15init_set_lifecycle(card, SC_CARDCTRL_LIFECYCLE_ADMIN);
if (r < 0 && r != SC_ERROR_NOT_SUPPORTED)
return r;
return sc_card_ctl(card, SC_CARDCTL_CARDOS_PUT_DATA_OCI, &args);
}
static int
cardos_put_key(sc_profile_t *profile, struct sc_pkcs15_card *p15card,
int algorithm, sc_pkcs15_prkey_info_t *key_info,
struct sc_pkcs15_prkey_rsa *key)
{
struct sc_card *card = p15card->card;
int r, key_id, pin_id;
pin_id = sc_pkcs15init_get_pin_reference(p15card, profile, SC_AC_SYMBOLIC,
SC_PKCS15INIT_USER_PIN);
if (pin_id < 0)
pin_id = 0;
key_id = key_info->key_reference;
if (key_info->modulus_length > 1024 && (card->type == SC_CARD_TYPE_CARDOS_M4_2 ||
card->type == SC_CARD_TYPE_CARDOS_M4_3 ||card->type == SC_CARD_TYPE_CARDOS_M4_2B ||
card->type == SC_CARD_TYPE_CARDOS_M4_2C ||card->type == SC_CARD_TYPE_CARDOS_M4_4)) {
r = cardos_store_key_component(card, algorithm, key_id, pin_id, 0,
key->p.data, key->p.len, 0, 0);
if (r != SC_SUCCESS)
return r;
r = cardos_store_key_component(card, algorithm, key_id, pin_id, 1,
key->q.data, key->q.len, 0, 0);
if (r != SC_SUCCESS)
return r;
r = cardos_store_key_component(card, algorithm, key_id, pin_id, 2,
key->dmp1.data, key->dmp1.len, 0, 0);
if (r != SC_SUCCESS)
return r;
r = cardos_store_key_component(card, algorithm, key_id, pin_id, 3,
key->dmq1.data, key->dmq1.len, 0, 0);
if (r != SC_SUCCESS)
return r;
r = cardos_store_key_component(card, algorithm, key_id, pin_id, 4,
key->iqmp.data, key->iqmp.len, 1, 0);
} else {
r = cardos_store_key_component(card, algorithm, key_id, pin_id, 0,
key->modulus.data, key->modulus.len, 0, 1);
if (r != SC_SUCCESS)
return r;
r = cardos_store_key_component(card, algorithm, key_id, pin_id, 1,
key->d.data, key->d.len, 1, 1);
}
return r;
}
/*
* Extract a key component from the public key file populated by
* GENERATE KEY PAIR
*/
static int parse_ext_pubkey_file(sc_card_t *card, const u8 *data, size_t len,
sc_pkcs15_pubkey_t *pubkey)
{
const u8 *p;
size_t ilen = 0, tlen = 0;
if (data == NULL || len < 32)
return SC_ERROR_INVALID_ARGUMENTS;
data = sc_asn1_find_tag(card->ctx, data, len, 0x7f49, &ilen);
if (data == NULL) {
sc_log(card->ctx, "invalid public key data: missing tag");
return SC_ERROR_INTERNAL;
}
p = sc_asn1_find_tag(card->ctx, data, ilen, 0x81, &tlen);
if (p == NULL) {
sc_log(card->ctx, "invalid public key data: missing modulus");
return SC_ERROR_INTERNAL;
}
pubkey->u.rsa.modulus.len = tlen;
pubkey->u.rsa.modulus.data = malloc(tlen);
if (pubkey->u.rsa.modulus.data == NULL)
return SC_ERROR_OUT_OF_MEMORY;
memcpy(pubkey->u.rsa.modulus.data, p, tlen);
p = sc_asn1_find_tag(card->ctx, data, ilen, 0x82, &tlen);
if (p == NULL) {
sc_log(card->ctx, "invalid public key data: missing exponent");
return SC_ERROR_INTERNAL;
}
pubkey->u.rsa.exponent.len = tlen;
pubkey->u.rsa.exponent.data = malloc(tlen);
if (pubkey->u.rsa.exponent.data == NULL)
return SC_ERROR_OUT_OF_MEMORY;
memcpy(pubkey->u.rsa.exponent.data, p, tlen);
return SC_SUCCESS;
}
static int
do_cardos_extract_pubkey(sc_card_t *card, int nr, u8 tag,
sc_pkcs15_bignum_t *bn)
{
u8 buf[256];
int r, count;
r = sc_read_record(card, nr, buf, sizeof(buf), SC_RECORD_BY_REC_NR);
if (r < 0)
return r;
count = r - 4;
if (count <= 0 || buf[0] != tag || buf[1] != count + 2
|| buf[2] != count + 1 || buf[3] != 0)
return SC_ERROR_INTERNAL;
bn->len = count;
bn->data = malloc(count);
if (bn->data == NULL)
return SC_ERROR_OUT_OF_MEMORY;
memcpy(bn->data, buf + 4, count);
return SC_SUCCESS;
}
static int cardos_extract_pubkey(sc_card_t *card, sc_pkcs15_pubkey_t *pubkey,
sc_file_t *tfile, int use_ext_rsa)
{
int r;
memset(pubkey, 0, sizeof(*pubkey));
r = sc_select_file(card, &tfile->path, NULL);
if (r != SC_SUCCESS)
return r;
if (use_ext_rsa == 0) {
r = do_cardos_extract_pubkey(card, 1, 0x10, &pubkey->u.rsa.modulus);
if (r != SC_SUCCESS)
return r;
r = do_cardos_extract_pubkey(card, 2, 0x11, &pubkey->u.rsa.exponent);
} else {
u8 *buf;
buf = malloc(tfile->size);
if (buf == NULL)
return SC_ERROR_OUT_OF_MEMORY;
r = sc_read_binary(card, 0, buf, tfile->size, 0);
if (r > 0)
r = parse_ext_pubkey_file(card, buf, (size_t)r, pubkey);
free(buf);
}
pubkey->algorithm = SC_ALGORITHM_RSA;
return r;
}
static int cardos_have_verifyrc_package(sc_card_t *card)
{
sc_apdu_t apdu;
u8 rbuf[SC_MAX_APDU_BUFFER_SIZE];
int r;
const u8 *p = rbuf, *q;
size_t len, tlen = 0, ilen = 0;
sc_format_apdu(card, &apdu, SC_APDU_CASE_2_SHORT, 0xca, 0x01, 0x88);
apdu.resp = rbuf;
apdu.resplen = sizeof(rbuf);
apdu.lc = 0;
apdu.le = 256;
r = sc_transmit_apdu(card, &apdu);
LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
if ((len = apdu.resplen) == 0)
/* looks like no package has been installed */
return 0;
while (len != 0) {
p = sc_asn1_find_tag(card->ctx, p, len, 0xe1, &tlen);
if (p == NULL)
return 0;
if (card->type == SC_CARD_TYPE_CARDOS_M4_3) {
/* the verifyRC package on CardOS 4.3B use Manufacturer ID 0x01 */
/* and Package Number 0x07 */
q = sc_asn1_find_tag(card->ctx, p, tlen, 0x01, &ilen);
if (q == NULL || ilen != 4)
return 0;
if (q[0] == 0x07)
return 1;
} else if (card->type == SC_CARD_TYPE_CARDOS_M4_4) {
/* the verifyRC package on CardOS 4.4 use Manufacturer ID 0x03 */
/* and Package Number 0x02 */
q = sc_asn1_find_tag(card->ctx, p, tlen, 0x03, &ilen);
if (q == NULL || ilen != 4)
return 0;
if (q[0] == 0x02)
return 1;
} else {
return 0;
}
p += tlen;
len -= tlen + 2;
}
return 0;
}
static struct sc_pkcs15init_operations sc_pkcs15init_cardos_operations = {
cardos_erase,
NULL, /* init_card */
cardos_create_dir,
NULL, /* create_domain */
cardos_select_pin_reference,
cardos_create_pin,
cardos_select_key_reference,
cardos_create_key,
cardos_store_key,
cardos_generate_key,
NULL, NULL, /* encode private/public key */
NULL, /* finalize_card */
cardos_delete_object,
NULL, NULL, NULL, NULL, NULL, /* pkcs15init emulation */
NULL /* sanity_check */
};
struct sc_pkcs15init_operations *
sc_pkcs15init_get_cardos_ops(void)
{
return &sc_pkcs15init_cardos_operations;
}
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