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opensc/src/pkcs15init/pkcs15-setcos.c

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/*
* SetOCS 4.4 specific operations for PKCS15 initialization
*
* Copyright (C) 2003, 2005 Zetes
*
* 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 <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include "libopensc/opensc.h"
#include "libopensc/cardctl.h"
#include "libopensc/log.h"
#include "pkcs15-init.h"
#include "profile.h"
#define SETCOS_MAX_PINS 7
static unsigned char SETCOS_DEFAULT_PUBKEY[] = {0x01, 0x00, 0x01};
#define SETCOS_DEFAULT_PUBKEY_LEN sizeof(SETCOS_DEFAULT_PUBKEY)
static int setcos_create_pin_internal(sc_profile_t *, sc_pkcs15_card_t *,
int, sc_pkcs15_auth_info_t *, const u8 *, size_t, const u8 *, size_t);
static int
setcos_puk_retries(sc_profile_t *profile, int pin_ref)
{
sc_pkcs15_auth_info_t auth_info;
auth_info.auth_type = SC_PKCS15_PIN_AUTH_TYPE_PIN;
auth_info.attrs.pin.reference = 1; /* Default SO PIN ref. */
sc_profile_get_pin_info(profile, SC_PKCS15INIT_SO_PIN, &auth_info);
/* If pin_ref is the SO PIN, get the SO PUK info, otherwise the User PUK info */
sc_profile_get_pin_info(profile,
pin_ref == auth_info.attrs.pin.reference ? SC_PKCS15INIT_SO_PUK : SC_PKCS15INIT_USER_PUK,
&auth_info);
if ((auth_info.tries_left < 0) || (auth_info.tries_left > 15))
return 3; /* Little extra safety */
return auth_info.tries_left;
}
/*
* Erase the card.
*/
static int setcos_erase_card(sc_profile_t *profile, sc_pkcs15_card_t *p15card)
{
sc_path_t path;
int r;
/* Just delete the entire MF */
/* Select parent DF and verify PINs/key as necessary */
r = sc_pkcs15init_authenticate(profile, p15card, profile->mf_info->file, SC_AC_OP_DELETE);
if (r < 0)
return r == SC_ERROR_FILE_NOT_FOUND ? 0 : r;
/* Empty path -> we have to to delete the current DF (= the MF) */
memset(&path, 0, sizeof(sc_path_t));
r = sc_delete_file(p15card->card, &path) ;
if (r)
return r;
sc_free_apps(p15card->card);
return 0;
}
/*
* Create the MF and global pin file if they don't exist.
*/
static int
setcos_init_card(sc_profile_t *profile, sc_pkcs15_card_t *p15card)
{
struct sc_context *ctx = p15card->card->ctx;
sc_file_t *mf = profile->mf_info->file;
sc_file_t *pinfile;
int r;
SC_FUNC_CALLED(ctx, SC_LOG_DEBUG_VERBOSE);
/* Create the MF if it doesn't exist yet */
r = sc_select_file(p15card->card, &mf->path, NULL);
if (r == SC_ERROR_FILE_NOT_FOUND) {
sc_log(ctx, "MF doesn't exist, creating now");
/* Fix up the file's ACLs */
r = sc_pkcs15init_fixup_file(profile, p15card, mf);
LOG_TEST_RET(ctx, r, "MF fixup failed");
mf->status = SC_FILE_STATUS_CREATION;
r = sc_create_file(p15card->card, mf);
LOG_TEST_RET(ctx, r, "MF creation failed");
}
LOG_TEST_RET(ctx, r, "Cannot select MF");
/* Create the global pin file if it doesn't exist yet */
r = sc_profile_get_file(profile, "pinfile", &pinfile);
LOG_TEST_RET(ctx, r, "Cannot get 'pinfile' from profile");
r = sc_select_file(p15card->card, &pinfile->path, NULL);
if (r == SC_ERROR_FILE_NOT_FOUND) {
sc_log(ctx, "Global pin file doesn't exist, creating now");
/* Fix up the file's ACLs */
r = sc_pkcs15init_fixup_file(profile, p15card, pinfile);
if (r < 0)
sc_file_free(pinfile);
LOG_TEST_RET(ctx, r, "Pinfile fixup failed");
/* Set life cycle state to SC_FILE_STATUS_CREATION,
* which means that all ACs are ignored. */
pinfile->status = SC_FILE_STATUS_CREATION;
r = sc_create_file(p15card->card, pinfile);
if (r < 0)
sc_file_free(pinfile);
LOG_TEST_RET(ctx, r, "Pinfile creation failed");
}
sc_file_free(pinfile);
LOG_TEST_RET(ctx, r, "Select pinfile failed");
LOG_FUNC_RETURN(ctx, r);
}
/*
* Create a DF
*/
static int
setcos_create_dir(sc_profile_t *profile, sc_pkcs15_card_t *p15card, sc_file_t *df)
{
struct sc_context *ctx = p15card->card->ctx;
int r;
SC_FUNC_CALLED(ctx, SC_LOG_DEBUG_VERBOSE);
r = sc_pkcs15init_fixup_file(profile, p15card, df);
LOG_TEST_RET(ctx, r, "SetCOS file ACL fixup failed");
r = sc_create_file(p15card->card, df);
LOG_TEST_RET(ctx, r, "SetCOS create file failed");
LOG_FUNC_RETURN(ctx, r);
}
/*
* Select the PIN reference
*/
static int
setcos_select_pin_reference(sc_profile_t *profile, sc_pkcs15_card_t *p15card,
sc_pkcs15_auth_info_t *auth_info)
{
sc_pkcs15_auth_info_t auth_info_prof;
auth_info_prof.attrs.pin.reference = 1; /* Default SO PIN ref. */
auth_info_prof.auth_type = SC_PKCS15_PIN_AUTH_TYPE_PIN;
sc_profile_get_pin_info(profile, SC_PKCS15INIT_SO_PIN, &auth_info_prof);
/* For the SO pin, we take the first available pin reference = 1 */
if (auth_info->attrs.pin.flags & SC_PKCS15_PIN_FLAG_SO_PIN)
auth_info->attrs.pin.reference = auth_info_prof.attrs.pin.reference;
/* sc_pkcs15init_create_pin() starts checking if -1 is an acceptable
* pin reference, which isn't for the SetCOS cards. And since the
* value 1 has been assigned to the SO pin, we'll jump to 2. */
else if (auth_info->attrs.pin.reference <= 0)
auth_info->attrs.pin.reference = auth_info_prof.attrs.pin.reference + 1;
return 0;
}
/*
* Create a new PIN
*/
static int
setcos_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)
{
struct sc_context *ctx = p15card->card->ctx;
sc_pkcs15_auth_info_t *auth_info = (sc_pkcs15_auth_info_t *) pin_obj->data;
sc_file_t *pinfile = NULL;
int r, ignore_ac = 0;
SC_FUNC_CALLED(ctx, SC_LOG_DEBUG_VERBOSE);
if (auth_info->auth_type != SC_PKCS15_PIN_AUTH_TYPE_PIN)
return SC_ERROR_OBJECT_NOT_VALID;
/* Create the global pin file if it doesn't exist yet */
r = sc_profile_get_file(profile, "pinfile", &pinfile);
LOG_TEST_RET(ctx, r, "No 'pinfile' template in profile");
r = sc_select_file(p15card->card, &pinfile->path, &pinfile);
LOG_TEST_RET(ctx, r, "Cannot select 'pinfile'");
sc_log(ctx, "pinfile->status:%X", pinfile->status);
sc_log(ctx, "create PIN with reference:%X, flags:%X, path:%s",
auth_info->attrs.pin.reference, auth_info->attrs.pin.flags, sc_print_path(&auth_info->path));
if (pinfile->status == SC_FILE_STATUS_CREATION)
ignore_ac = 1;
r = setcos_create_pin_internal(profile, p15card, ignore_ac, auth_info,
pin, pin_len, puk, puk_len);
/* If pinfile is in 'Creation' state and SOPIN has been created,
* change status of MF and 'pinfile' to 'Operational:Activated'
*/
if (ignore_ac && (auth_info->attrs.pin.flags & SC_PKCS15_PIN_FLAG_SO_PIN)) {
sc_file_t *mf = profile->mf_info->file;
r = sc_card_ctl(p15card->card, SC_CARDCTL_SETCOS_ACTIVATE_FILE, NULL);
LOG_TEST_RET(ctx, r, "Cannot set 'pinfile' into the activated state");
r = sc_select_file(p15card->card, &mf->path, NULL);
LOG_TEST_RET(ctx, r, "Cannot select MF");
r = sc_card_ctl(p15card->card, SC_CARDCTL_SETCOS_ACTIVATE_FILE, NULL);
LOG_TEST_RET(ctx, r, "Cannot set MF into the activated state");
}
sc_file_free(pinfile);
LOG_FUNC_RETURN(ctx, r);
}
/*
* Setup file struct & path: get correct template from the profile, construct full path
*/
static int
setcos_new_file(sc_profile_t *profile, sc_card_t *card,
unsigned int type,
unsigned int num, /* number of objects of this type already on the card */
sc_file_t **out)
{
sc_file_t *file;
sc_path_t *p;
char name[64];
const char *tag;
int r;
if (type == SC_PKCS15_TYPE_PRKEY_RSA)
tag = "private-key";
else if (type == SC_PKCS15_TYPE_PUBKEY_RSA)
tag = "public-key";
else if ((type & SC_PKCS15_TYPE_CLASS_MASK) == SC_PKCS15_TYPE_CERT)
tag = "certificate";
else if ((type & SC_PKCS15_TYPE_CLASS_MASK) == SC_PKCS15_TYPE_DATA_OBJECT)
tag = "data";
else {
sc_log(card->ctx, "Unsupported file type");
return SC_ERROR_INVALID_ARGUMENTS;
}
/* Get template from profile */
snprintf(name, sizeof(name), "template-%s", tag);
if (sc_profile_get_file(profile, name, &file) < 0) {
sc_log(card->ctx, "Profile doesn't define %s", name);
return SC_ERROR_NOT_SUPPORTED;
}
/* Auto-increment FID for next object */
file->id += num;
p = &file->path;
*p = profile->df_info->file->path;
p->value[p->len++] = (u8) (file->id / 256);
p->value[p->len++] = (u8) (file->id % 256);
/* Increment FID until there's no file with such path */
r = sc_select_file(card, p, NULL);
while(r == 0) {
file->id++;
p->value[p->len - 2] = (u8) (file->id / 256);
p->value[p->len - 1] = (u8) (file->id % 256);
r = sc_select_file(card, p, NULL);
}
*out = file;
return 0;
}
static int
setcos_encode_private_key(sc_profile_t *profile, sc_card_t *card,
struct sc_pkcs15_prkey_rsa *rsa,
u8 *key, size_t *keysize, int key_ref)
{
return 0;
}
static int
setcos_encode_public_key(sc_profile_t *profile, sc_card_t *card,
struct sc_pkcs15_prkey_rsa *rsa,
u8 *key, size_t *keysize, int key_ref)
{
return 0;
}
static int
setcos_create_key(sc_profile_t *profile, sc_pkcs15_card_t *p15card,
struct sc_pkcs15_object *object)
{
struct sc_context *ctx = p15card->card->ctx;
struct sc_pkcs15_prkey_info *key_info = (struct sc_pkcs15_prkey_info *)object->data;
struct sc_file *file = NULL;
int keybits = key_info->modulus_length, r;
SC_FUNC_CALLED(ctx, SC_LOG_DEBUG_VERBOSE);
if (object->type != SC_PKCS15_TYPE_PRKEY_RSA)
LOG_TEST_RET(ctx, SC_ERROR_NOT_SUPPORTED, "Create key failed: RSA only supported");
/* Parameter check */
if ( (keybits < 512) || (keybits > 1024) || (keybits & 0x7))
LOG_TEST_RET(ctx, SC_ERROR_INVALID_ARGUMENTS, "Invalid key length");
sc_log(ctx, "create private key ID:%s\n", sc_pkcs15_print_id(&key_info->id));
/* Get the private key file */
r = setcos_new_file(profile, p15card->card, SC_PKCS15_TYPE_PRKEY_RSA, key_info->key_reference, &file);
LOG_TEST_RET(ctx, r, "Cannot get new private key file");
/* Take enough room for a 1024 bit key */
if (file->size < 512)
file->size = 512;
/* Replace the path of instantiated key template by the path from the object data. */
memcpy(&file->path, &key_info->path, sizeof(file->path));
file->id = file->path.value[file->path.len - 2] * 0x100
+ file->path.value[file->path.len - 1];
key_info->key_reference = file->path.value[file->path.len - 1] & 0xFF;
sc_log(ctx, "Path of private key file to create %s\n", sc_print_path(&file->path));
r = sc_select_file(p15card->card, &file->path, NULL);
if (!r) {
r = sc_pkcs15init_delete_by_path(profile, p15card, &file->path);
LOG_TEST_RET(ctx, r, "Failed to delete private key file");
}
else if (r != SC_ERROR_FILE_NOT_FOUND) {
LOG_TEST_RET(ctx, r, "Select private key file error");
}
/* Now create the key file */
r = sc_pkcs15init_create_file(profile, p15card, file);
LOG_TEST_RET(ctx, r, "Cannot create private key file");
sc_file_free(file);
LOG_FUNC_RETURN(ctx, r);
}
/*
* Store a private key
*/
static int
setcos_store_key(struct sc_profile *profile, struct sc_pkcs15_card *p15card,
struct sc_pkcs15_object *object,
struct sc_pkcs15_prkey *prkey)
{
struct sc_context *ctx = p15card->card->ctx;
struct sc_pkcs15_prkey_info *key_info = (struct sc_pkcs15_prkey_info *)object->data;
struct sc_cardctl_setcos_gen_store_key_info args;
struct sc_file *file = NULL;
int r, keybits = key_info->modulus_length;
SC_FUNC_CALLED(ctx, SC_LOG_DEBUG_VERBOSE);
if (object->type != SC_PKCS15_TYPE_PRKEY_RSA)
LOG_TEST_RET(ctx, SC_ERROR_NOT_SUPPORTED, "Store key failed: RSA only supported");
/* Parameter check */
if ( (keybits < 512) || (keybits > 1024) || (keybits & 0x7))
LOG_TEST_RET(ctx, SC_ERROR_INVALID_ARGUMENTS, "Invalid key length");
sc_log(ctx, "store key with ID:%s and path:%s\n", sc_pkcs15_print_id(&key_info->id),
sc_print_path(&key_info->path));
r = sc_select_file(p15card->card, &key_info->path, &file);
LOG_TEST_RET(ctx, r, "Cannot store key: select key file failed");
r = sc_pkcs15init_authenticate(profile, p15card, file, SC_AC_OP_UPDATE);
LOG_TEST_RET(ctx, r, "No authorisation to store private key");
/* Fill in data structure */
memset(&args, 0, sizeof(args));
args.mod_len = keybits;
args.op_type = OP_TYPE_STORE;
args.pubexp_len = prkey->u.rsa.exponent.len * 8;
args.pubexp = prkey->u.rsa.exponent.data;
args.primep_len = prkey->u.rsa.p.len * 8;
args.primep = prkey->u.rsa.p.data;
args.primeq_len = prkey->u.rsa.q.len * 8;
args.primeq = prkey->u.rsa.q.data;
/* Generate/store rsa key */
r = sc_card_ctl(p15card->card, SC_CARDCTL_SETCOS_GENERATE_STORE_KEY, &args);
LOG_TEST_RET(ctx, r, "Card control 'GENERATE_STORE_KEY' failed");
sc_file_free(file);
LOG_FUNC_RETURN(ctx, r);
}
static int
setcos_generate_key(struct sc_profile *profile, struct sc_pkcs15_card *p15card,
struct sc_pkcs15_object *object,
struct sc_pkcs15_pubkey *pubkey)
{
struct sc_context *ctx = p15card->card->ctx;
struct sc_cardctl_setcos_gen_store_key_info args;
struct sc_cardctl_setcos_data_obj data_obj;
struct sc_pkcs15_prkey_info *key_info = (struct sc_pkcs15_prkey_info *)object->data;
int r;
size_t keybits = key_info->modulus_length;
unsigned char raw_pubkey[256];
struct sc_file *file = NULL;
SC_FUNC_CALLED(ctx, SC_LOG_DEBUG_VERBOSE);
if (object->type != SC_PKCS15_TYPE_PRKEY_RSA)
LOG_TEST_RET(ctx, SC_ERROR_NOT_SUPPORTED, "Generate key failed: RSA only supported");
/* Parameter check */
if ( (keybits < 512) || (keybits > 1024) || (keybits & 0x7))
LOG_TEST_RET(ctx, SC_ERROR_INVALID_ARGUMENTS, "Invalid key length");
r = sc_select_file(p15card->card, &key_info->path, &file);
LOG_TEST_RET(ctx, r, "Cannot store key: select key file failed");
/* Authenticate */
r = sc_pkcs15init_authenticate(profile, p15card, file, SC_AC_OP_UPDATE);
LOG_TEST_RET(ctx, r, "No authorisation to store private key");
/* Fill in data structure */
memset(&args, 0, sizeof(args));
args.mod_len = keybits;
args.op_type = OP_TYPE_GENERATE;
args.pubexp_len = SETCOS_DEFAULT_PUBKEY_LEN * 8;
args.pubexp = SETCOS_DEFAULT_PUBKEY;
/* Generate/store rsa key */
r = sc_card_ctl(p15card->card, SC_CARDCTL_SETCOS_GENERATE_STORE_KEY, &args);
LOG_TEST_RET(ctx, r, "Card control 'GENERATE_STORE_KEY' failed");
/* Key pair generation -> collect public key info */
if (pubkey != NULL) {
pubkey->algorithm = SC_ALGORITHM_RSA;
pubkey->u.rsa.modulus.len = (keybits + 7) / 8;
pubkey->u.rsa.modulus.data = malloc(pubkey->u.rsa.modulus.len);
pubkey->u.rsa.exponent.len = SETCOS_DEFAULT_PUBKEY_LEN;
pubkey->u.rsa.exponent.data = malloc(SETCOS_DEFAULT_PUBKEY_LEN);
memcpy(pubkey->u.rsa.exponent.data, SETCOS_DEFAULT_PUBKEY, SETCOS_DEFAULT_PUBKEY_LEN);
/* Get public key modulus */
r = sc_select_file(p15card->card, &file->path, NULL);
LOG_TEST_RET(ctx, r, "Cannot get key modulus: select key file failed");
data_obj.P1 = 0x01;
data_obj.P2 = 0x01;
data_obj.Data = raw_pubkey;
data_obj.DataLen = sizeof(raw_pubkey);
r = sc_card_ctl(p15card->card, SC_CARDCTL_SETCOS_GETDATA, &data_obj);
LOG_TEST_RET(ctx, r, "Cannot get key modulus: 'SETCOS_GETDATA' failed");
keybits = ((raw_pubkey[0] * 256) + raw_pubkey[1]); /* modulus bit length */
if (keybits != key_info->modulus_length) {
sc_log(ctx,
"key-size from card[%"SC_FORMAT_LEN_SIZE_T"u] does not match[%"SC_FORMAT_LEN_SIZE_T"u]\n",
keybits, key_info->modulus_length);
LOG_TEST_RET(ctx, SC_ERROR_PKCS15INIT, "Failed to generate key");
}
memcpy (pubkey->u.rsa.modulus.data, &raw_pubkey[2], pubkey->u.rsa.modulus.len);
}
sc_file_free(file);
return r;
}
/*
* Create a new PIN
*/
static int
setcos_create_pin_internal(sc_profile_t *profile, sc_pkcs15_card_t *p15card,
int ignore_ac, sc_pkcs15_auth_info_t *auth_info,
const u8 *pin, size_t pin_len,
const u8 *puk, size_t puk_len)
{
struct sc_context *ctx = p15card->card->ctx;
u8 data[32];
int r;
struct sc_cardctl_setcos_data_obj data_obj;
sc_file_t *pinfile = NULL;
SC_FUNC_CALLED(ctx, SC_LOG_DEBUG_VERBOSE);
if (auth_info->auth_type != SC_PKCS15_PIN_AUTH_TYPE_PIN)
return SC_ERROR_OBJECT_NOT_VALID;
if (auth_info->attrs.pin.reference >= SETCOS_MAX_PINS)
return SC_ERROR_INVALID_ARGUMENTS;
if (pin == NULL || puk == NULL || pin_len < 4 || puk_len < 4)
return SC_ERROR_INVALID_PIN_LENGTH;
/* Verify required access rights if needed (i.e. if the
* pin file isn't in the CREATE life cycle state). */
if (!ignore_ac) {
r = sc_profile_get_file(profile, "pinfile", &pinfile);
if (r >= 0)
r = sc_pkcs15init_authenticate(profile, p15card, pinfile, SC_AC_OP_UPDATE);
sc_file_free(pinfile);
if (r < 0)
return r;
}
/* Make command to add a pin-record */
data_obj.P1 = 01;
data_obj.P2 = 01;
/* setcos pin number */
data[0] = auth_info->attrs.pin.reference;
memset(&data[1], auth_info->attrs.pin.pad_char, 16); /* padding */
memcpy(&data[1], (u8 *)pin, pin_len); /* copy pin*/
memcpy(&data[9], (u8 *)puk, puk_len); /* copy puk */
data[17] = auth_info->tries_left & 0x0F;
data[18] = auth_info->tries_left & 0x0F;
/* 0xF0: unlimited unblock tries */
data[19] = 0xF0 | setcos_puk_retries(profile, auth_info->attrs.pin.reference);
/* Allow an unlimited number of signatures after a pin verification.
* If set to 1 or so, we would have a UserConsent PIN. */
data[20] = 0x00;
if (auth_info->attrs.pin.type == 0)
data[21] = 0x01; /* BCD */
else
data[21] = 0x00; /* ASCII */
if ((auth_info->attrs.pin.flags & 0x010) == 0) /* test for initial pin */
data[21] |= 0x80;
data[22] = 0x00; /* not used */
data[23] = 0x00; /* not used */
data_obj.Data = data;
data_obj.DataLen = 24;
r = sc_card_ctl(p15card->card, SC_CARDCTL_SETCOS_PUTDATA, &data_obj);
SC_FUNC_RETURN(ctx, SC_LOG_DEBUG_VERBOSE, r);
}
static struct sc_pkcs15init_operations sc_pkcs15init_setcos_operations = {
setcos_erase_card, /* erase_card */
setcos_init_card, /* init_card */
setcos_create_dir, /* create_dir */
NULL, /* create_domain */
setcos_select_pin_reference, /* select_pin_reference */
setcos_create_pin, /* create_pin */
NULL, /* select_key_reference */
setcos_create_key, /* create_key */
setcos_store_key, /* store_key */
setcos_generate_key, /* generate_key */
setcos_encode_private_key, /* encode_private_key */
setcos_encode_public_key, /* encode_public_key */
NULL, /* finalize_card */
NULL, /* delete_object */
NULL, /* emu_update_dir */
NULL, /* emu_update_any_df */
NULL, /* emu_update_tokeninfo */
NULL, /* emu_write_info */
NULL, /* emu_store_data */
NULL /* sanity_check */
};
struct sc_pkcs15init_operations *
sc_pkcs15init_get_setcos_ops(void)
{
return &sc_pkcs15init_setcos_operations;
}
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