/*
 * card-sc-hsm.c
 *
 * Driver for the SmartCard-HSM, a light-weight hardware security module
 *
 * Copyright (C) 2012 Andreas Schwier, CardContact, Minden, Germany, and others
 *
 * 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
 */

#if HAVE_CONFIG_H
#include "config.h"
#endif

#include <string.h>
#include <stdlib.h>
#include <ctype.h>

#include "internal.h"
#include "asn1.h"
#include "cardctl.h"
#include "types.h"

#include "card-sc-hsm.h"


/* Static reference to ISO driver */
static const struct sc_card_operations *iso_ops = NULL;

/* Our operations */
static struct sc_card_operations sc_hsm_ops;

/* Our driver description */
static struct sc_card_driver sc_hsm_drv = {
	"SmartCard-HSM",
	"sc-hsm",
	&sc_hsm_ops,
	NULL,
	0,
	NULL
};



/* Our AID */
struct sc_aid sc_hsm_aid = { { 0xE8,0x2B,0x06,0x01,0x04,0x01,0x81,0xC3,0x1F,0x02,0x01 }, 11 };



/* Known ATRs for SmartCard-HSMs */
const struct sc_atr_table sc_hsm_atrs[] = {
	/* standard version */
	{"3B:FE:18:00:00:81:31:FE:45:80:31:81:54:48:53:4D:31:73:80:21:40:81:07:FA", NULL, NULL, SC_CARD_TYPE_SC_HSM, 0, NULL},
	{"3B:8E:80:01:80:31:81:54:48:53:4D:31:73:80:21:40:81:07:18", NULL, NULL, SC_CARD_TYPE_SC_HSM, 0, NULL},
	{"3B:DE:18:FF:81:91:FE:1F:C3:80:31:81:54:48:53:4D:31:73:80:21:40:81:07:1C", NULL, NULL, SC_CARD_TYPE_SC_HSM, 0, NULL},
	{"3B:DE:96:FF:81:91:FE:1F:C3:80:31:81:54:48:53:4D:31:73:80:21:40:81:07:92", NULL, NULL, SC_CARD_TYPE_SC_HSM, 0, NULL},

	{"3B:80:80:01:01", NULL, NULL, SC_CARD_TYPE_SC_HSM_SOC, 0, NULL},	// SoC Sample Card
	{
		"3B:84:80:01:47:6f:49:44:00",
		"FF:FF:FF:FF:FF:FF:FF:FF:00",
		"GoID", SC_CARD_TYPE_SC_HSM_GOID, 0, NULL
	},
	{
		"3B:85:80:01:47:6f:49:44:00:00",
		"FF:FF:FF:FF:FF:FF:FF:FF:00:00",
		"GoID", SC_CARD_TYPE_SC_HSM_GOID, 0, NULL
	},
	{
		"3B:86:80:01:47:6f:49:44:00:00:00",
		"FF:FF:FF:FF:FF:FF:FF:FF:00:00:00",
		"GoID", SC_CARD_TYPE_SC_HSM_GOID, 0, NULL
	},
	{
		"3B:87:80:01:47:6f:49:44:00:00:00:00",
		"FF:FF:FF:FF:FF:FF:FF:FF:00:00:00:00",
		"GoID", SC_CARD_TYPE_SC_HSM_GOID, 0, NULL
	},
	{
		"3B:88:80:01:47:6f:49:44:00:00:00:00:00",
		"FF:FF:FF:FF:FF:FF:FF:FF:00:00:00:00:00",
		"GoID", SC_CARD_TYPE_SC_HSM_GOID, 0, NULL
	},
	{
		"3B:89:80:01:47:6f:49:44:00:00:00:00:00:00",
		"FF:FF:FF:FF:FF:FF:FF:FF:00:00:00:00:00:00",
		"GoID", SC_CARD_TYPE_SC_HSM_GOID, 0, NULL
	},
	{
		"3B:8a:80:01:47:6f:49:44:00:00:00:00:00:00:00",
		"FF:FF:FF:FF:FF:FF:FF:FF:00:00:00:00:00:00:00",
		"GoID", SC_CARD_TYPE_SC_HSM_GOID, 0, NULL
	},
	{
		"3B:8b:80:01:47:6f:49:44:00:00:00:00:00:00:00:00",
		"FF:FF:FF:FF:FF:FF:FF:FF:00:00:00:00:00:00:00:00",
		"GoID", SC_CARD_TYPE_SC_HSM_GOID, 0, NULL
	},
	{
		"3B:8c:80:01:47:6f:49:44:00:00:00:00:00:00:00:00:00",
		"FF:FF:FF:FF:FF:FF:FF:FF:00:00:00:00:00:00:00:00:00",
		"GoID", SC_CARD_TYPE_SC_HSM_GOID, 0, NULL
	},
	{
		"3B:8d:80:01:47:6f:49:44:00:00:00:00:00:00:00:00:00:00",
		"FF:FF:FF:FF:FF:FF:FF:FF:00:00:00:00:00:00:00:00:00:00",
		"GoID", SC_CARD_TYPE_SC_HSM_GOID, 0, NULL
	},
	{
		"3B:8e:80:01:47:6f:49:44:00:00:00:00:00:00:00:00:00:00:00",
		"FF:FF:FF:FF:FF:FF:FF:FF:00:00:00:00:00:00:00:00:00:00:00",
		"GoID", SC_CARD_TYPE_SC_HSM_GOID, 0, NULL
	},
	{
		"3B:8f:80:01:47:6f:49:44:00:00:00:00:00:00:00:00:00:00:00:00",
		"FF:FF:FF:FF:FF:FF:FF:FF:00:00:00:00:00:00:00:00:00:00:00:00",
		"GoID", SC_CARD_TYPE_SC_HSM_GOID, 0, NULL
	},
	{NULL, NULL, NULL, 0, 0, NULL}
};



static int sc_hsm_select_file_ex(sc_card_t *card,
			       const sc_path_t *in_path, int forceselect,
			       sc_file_t **file_out)
{
	int rv;
	sc_hsm_private_data_t *priv = (sc_hsm_private_data_t *) card->drv_data;
	sc_file_t *file = NULL;
	sc_path_t cpath;

	if (file_out == NULL) {				// Versions before 0.16 of the SmartCard-HSM do not support P2='0C'
		rv = sc_hsm_select_file_ex(card, in_path, forceselect, &file);
		if (file != NULL) {
			sc_file_free(file);
		}
		return rv;
	}

	if ((in_path->type == SC_PATH_TYPE_FILE_ID) && in_path->aid.len) {
		// Split applet selection and file selection into two separate calls
		cpath = *in_path;
		cpath.len = 0;
		cpath.type = SC_PATH_TYPE_DF_NAME;
		rv = sc_hsm_select_file_ex(card, &cpath, forceselect, NULL);
		LOG_TEST_RET(card->ctx, rv, "Could not select SmartCard-HSM application");

		if (in_path->len) {
			cpath = *in_path;
			cpath.aid.len = 0;
			rv = sc_hsm_select_file_ex(card, &cpath, forceselect, file_out);
		}
		return rv;
	}

	// Prevent selection of applet unless this is the first time, selection is forced or the device is not authenticated
	if (in_path->type == SC_PATH_TYPE_DF_NAME
			|| (in_path->type == SC_PATH_TYPE_PATH
				&& in_path->len == sc_hsm_aid.len
				&& !memcmp(in_path->value, sc_hsm_aid.value, sc_hsm_aid.len))
			|| (in_path->type == SC_PATH_TYPE_PATH
				&& in_path->len == 0
				&& in_path->aid.len == sc_hsm_aid.len
				&& !memcmp(in_path->aid.value, sc_hsm_aid.value, sc_hsm_aid.len))) {
		if (!priv || (priv->dffcp == NULL) || forceselect) {
			rv = (*iso_ops->select_file)(card, in_path, file_out);
			LOG_TEST_RET(card->ctx, rv, "Could not select SmartCard-HSM application");

			if (priv) {
				if (priv->dffcp != NULL) {
					sc_file_free(priv->dffcp);
				}
				// Cache the FCP returned when selecting the applet
				sc_file_dup(&priv->dffcp, *file_out);
			}
		} else {
			sc_file_dup(file_out, priv->dffcp);
			rv = SC_SUCCESS;
		}
		return rv;
	}

	if ((in_path->len >= 2) && (in_path->value[0] == 0x3F) && (in_path->value[1] == 0x00)) {
		// The SmartCard-HSM is an applet that is not default selected. Simulate selection of the MF
		if (in_path->len == 2) {
			file = sc_file_new();
			if (file == NULL)
				LOG_FUNC_RETURN(card->ctx, SC_ERROR_OUT_OF_MEMORY);
			file->path = *in_path;
			file->id = 0x3F00;
			file->type = SC_FILE_TYPE_DF;
			file->magic = SC_FILE_MAGIC;

			*file_out = file;
			return SC_SUCCESS;
		} else {
			sc_path_t truncated;
			memcpy(&truncated, in_path, sizeof truncated);
			truncated.len = in_path->len - 2;
			memcpy(truncated.value, in_path->value+2, truncated.len);
			return (*iso_ops->select_file)(card, &truncated, file_out);
		}
	}
	return (*iso_ops->select_file)(card, in_path, file_out);
}



static int sc_hsm_select_file(sc_card_t *card,
			       const sc_path_t *in_path,
			       sc_file_t **file_out)
{
	return sc_hsm_select_file_ex(card, in_path, 0, file_out);
}



static int sc_hsm_get_challenge(struct sc_card *card, unsigned char *rnd, size_t len)
{
	LOG_FUNC_CALLED(card->ctx);

	if (len > 1024) {
		len = 1024;
	}

	LOG_FUNC_RETURN(card->ctx, iso_ops->get_challenge(card, rnd, len));
}



static int sc_hsm_match_card(struct sc_card *card)
{
	sc_path_t path;
	int i, r, type = 0;
	sc_file_t *file = NULL;

	i = _sc_match_atr(card, sc_hsm_atrs, &type);
	if (i >= 0 && type != SC_CARD_TYPE_SC_HSM_SOC) {
		card->type = type;
		return 1;
	}

	sc_path_set(&path, SC_PATH_TYPE_DF_NAME, sc_hsm_aid.value, sc_hsm_aid.len, 0, 0);
	r = sc_hsm_select_file(card, &path, &file);
	LOG_TEST_RET(card->ctx, r, "Could not select SmartCard-HSM application");

	// Validate that card returns a FCP with a proprietary tag 85 with value longer than 2 byte (Fixes #1377)
	if (file != NULL) {
		i = file->prop_attr_len;
		sc_file_free(file);
		if (i < 2) {
			return 0;
		}
	}

	if (type == SC_CARD_TYPE_SC_HSM_SOC) {
		card->type = SC_CARD_TYPE_SC_HSM_SOC;
	} else {
		card->type = SC_CARD_TYPE_SC_HSM;
	}

	return 1;
}



/*
 * Encode 16 hexadecimals of SO-PIN into binary form
 * Caller must check length of sopin and provide an 8 byte buffer
 */
static int sc_hsm_encode_sopin(const u8 *sopin, u8 *sopinbin)
{
	int i;
	char digit;

	memset(sopinbin, 0, 8);
	for (i = 0; i < 16; i++) {
		*sopinbin <<= 4;
		digit = *sopin++;

		if (!isxdigit(digit))
			return SC_ERROR_PIN_CODE_INCORRECT;
		digit = toupper(digit);

		if (digit >= 'A')
			digit = digit - 'A' + 10;
		else
			digit = digit & 0xF;

		*sopinbin |= digit & 0xf;
		if (i & 1)
			sopinbin++;
	}
	return SC_SUCCESS;
}


static int sc_hsm_soc_select_minbioclient(sc_card_t *card)
{
	sc_apdu_t apdu;
	struct sc_aid minBioClient_aid = {
		{ 0xFF,'m','i','n','B','i','o','C','l','i','e','n','t',0x01 }, 14
	};

	/* Select MinBioClient */
#ifdef ENABLE_SM
	sc_sm_stop(card);
#endif
	sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0xA4, 0x04, 0x0C);
	apdu.data = minBioClient_aid.value;
	apdu.datalen = minBioClient_aid.len;
	apdu.lc = minBioClient_aid.len;
	LOG_TEST_RET(card->ctx,
			sc_transmit_apdu(card, &apdu),
			"APDU transmit failed");

	return sc_check_sw(card, apdu.sw1, apdu.sw2);
}

static int sc_hsm_soc_change(sc_card_t *card, struct sc_pin_cmd_data *data,
			   int *tries_left)
{
	sc_apdu_t apdu;
	sc_path_t path;
	int r;

	if (card->type == SC_CARD_TYPE_SC_HSM_SOC) {
		/* Select MinBioClient */
		r = sc_hsm_soc_select_minbioclient(card);
		LOG_TEST_RET(card->ctx, r, "Could not select MinBioClient application");

		/* verify PIN */
		sc_format_apdu(card, &apdu, SC_APDU_CASE_1, 0x20, 0x00, 0x80);
		r = sc_transmit_apdu(card, &apdu);
		LOG_TEST_GOTO_ERR(card->ctx, r, "APDU transmit failed");
		r = sc_check_sw(card, apdu.sw1, apdu.sw2);
		LOG_TEST_GOTO_ERR(card->ctx, r, "Could not verify PIN");

		/* change PIN */
		sc_format_apdu(card, &apdu, SC_APDU_CASE_1, 0x24, 0x01, 0x80);
		r = sc_transmit_apdu(card, &apdu);
		LOG_TEST_GOTO_ERR(card->ctx, r, "APDU transmit failed");
		r = sc_check_sw(card, apdu.sw1, apdu.sw2);
		LOG_TEST_GOTO_ERR(card->ctx, r, "Could not change PIN");
	} else {
#ifdef ENABLE_SM
		unsigned sm_mode = card->sm_ctx.sm_mode;
#endif

		/* verify PIN */
		sc_format_apdu(card, &apdu, SC_APDU_CASE_1, 0x20, 0x00, 0x85);
		apdu.cla = 0x80;
		r = sc_transmit_apdu(card, &apdu);
		LOG_TEST_GOTO_ERR(card->ctx, r, "APDU transmit failed");

#ifdef ENABLE_SM
		/* temporary disable SM, change reference data does not reach the applet */
		card->sm_ctx.sm_mode = SM_MODE_NONE;
#endif

		/* change PIN */
		sc_format_apdu(card, &apdu, SC_APDU_CASE_1, 0x24, 0x01, 0x85);
		apdu.cla = 0x80;
		r = sc_transmit_apdu(card, &apdu);
#ifdef ENABLE_SM
		/* restore SM if possible */
		card->sm_ctx.sm_mode = sm_mode;
#endif
		LOG_TEST_GOTO_ERR(card->ctx, r, "APDU transmit failed");
		r = sc_check_sw(card, apdu.sw1, apdu.sw2);
		LOG_TEST_GOTO_ERR(card->ctx, r, "Could not change PIN");
	}

err:
	if (card->type == SC_CARD_TYPE_SC_HSM_SOC) {
		/* Select SC-HSM */
		sc_path_set(&path, SC_PATH_TYPE_DF_NAME,
			   	sc_hsm_aid.value, sc_hsm_aid.len, 0, 0);
		LOG_TEST_RET(card->ctx,
				sc_hsm_select_file_ex(card, &path, 1, NULL),
				"Could not select SmartCard-HSM application");
	}

	return r;
}

static int sc_hsm_soc_unblock(sc_card_t *card, struct sc_pin_cmd_data *data,
			   int *tries_left)
{
	sc_apdu_t apdu;
	sc_path_t path;
	int r;

	if (card->type == SC_CARD_TYPE_SC_HSM_GOID) {
		return SC_ERROR_NOT_SUPPORTED;
	}

	/* Select MinBioClient */
	r = sc_hsm_soc_select_minbioclient(card);
	LOG_TEST_RET(card->ctx, r, "Could not select MinBioClient application");

	/* verify PUK */
	sc_format_apdu(card, &apdu, SC_APDU_CASE_1, 0x20, 0x00, 0x81);
	r = sc_transmit_apdu(card, &apdu);
	LOG_TEST_GOTO_ERR(card->ctx, r, "APDU transmit failed");
	r = sc_check_sw(card, apdu.sw1, apdu.sw2);
	LOG_TEST_GOTO_ERR(card->ctx, r, "Could not verify PUK");

	/* reset retry counter */
	sc_format_apdu(card, &apdu, SC_APDU_CASE_1, 0x2c, 0x03, 0x00);
	r = sc_transmit_apdu(card, &apdu);
	LOG_TEST_GOTO_ERR(card->ctx, r, "APDU transmit failed");
	r = sc_check_sw(card, apdu.sw1, apdu.sw2);
	LOG_TEST_GOTO_ERR(card->ctx, r, "Could not unblock PIN");

err:
	/* Select SC-HSM */
	sc_path_set(&path, SC_PATH_TYPE_DF_NAME, sc_hsm_aid.value, sc_hsm_aid.len, 0, 0);
	LOG_TEST_RET(card->ctx,
			sc_hsm_select_file_ex(card, &path, 1, NULL),
			"Could not select SmartCard-HSM application");

	return r;
}

static int sc_hsm_soc_biomatch(sc_card_t *card, struct sc_pin_cmd_data *data,
			   int *tries_left)
{
	sc_apdu_t apdu;
	u8 rbuf[SC_MAX_APDU_BUFFER_SIZE];
	int r;

	if (card->type == SC_CARD_TYPE_SC_HSM_SOC) {
		sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0x20, 0x00, 0x85);
		apdu.cla = 0x80;
		apdu.data = (unsigned char*)"\x7F\x24\x00";
		apdu.datalen = 3;
		apdu.lc = 3;
		apdu.resplen = 0;

		r = sc_transmit_apdu(card, &apdu);
		LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
		/* ignore the actual status bytes */
	}

	/* JCOP's SM accelerator is incapable of using case 1 APDU in SM */
	sc_format_apdu(card, &apdu, SC_APDU_CASE_2, 0x20, 0x00, 0x81);
	if (card->type == SC_CARD_TYPE_SC_HSM_GOID) {
		apdu.cla = 0x80;
	}
	apdu.resp = rbuf;
	apdu.resplen = sizeof rbuf;
	r = sc_transmit_apdu(card, &apdu);
	LOG_TEST_RET(card->ctx, r, "APDU transmit failed");

	/* now check the status bytes */
	r =  sc_check_sw(card, apdu.sw1, apdu.sw2);
	if (r == SC_SUCCESS) {
		LOG_FUNC_RETURN(card->ctx, r);
	}

	LOG_FUNC_RETURN(card->ctx, SC_ERROR_PIN_CODE_INCORRECT);
}



#ifdef ENABLE_SM
#ifdef ENABLE_OPENPACE
#include "sm/sm-eac.h"
#include <eac/cv_cert.h>
#include <eac/eac.h>
#include <eac/ta.h>
#include <openssl/bio.h>
#include <openssl/crypto.h>

static int sc_hsm_perform_chip_authentication(sc_card_t *card)
{
	int r, protocol;
	sc_path_t path;
	u8 all_certs[1024];
	EAC_CTX *ctx = NULL;
	size_t all_certs_len = sizeof all_certs, left, device_cert_len, issuer_cert_len;
	const unsigned char *cert = all_certs, *device_cert, *issuer_cert;
	BUF_MEM *comp_pub_key = NULL;
	sc_cvc_t cvc_device, cvc_issuer;
	/* this is only needed to call sc_pkcs15emu_sc_hsm_decode_cvc */
	sc_pkcs15_card_t p15card;
	sc_hsm_private_data_t *priv = (sc_hsm_private_data_t *) card->drv_data;
	/* we know that sc_pkcs15emu_sc_hsm_decode_cvc does not require anything
	 * else to be initialized than p15card->card */
	p15card.card = card;

	memset(&cvc_device, 0, sizeof(cvc_device));
	memset(&cvc_issuer, 0, sizeof(cvc_issuer));


	if (priv->EF_C_DevAut && priv->EF_C_DevAut_len) {
		all_certs_len = priv->EF_C_DevAut_len;
		cert = priv->EF_C_DevAut;
	} else {
		/* get issuer and device certificate from the card */
		r = sc_path_set(&path, SC_PATH_TYPE_FILE_ID, (u8 *) "\x2F\x02", 2, 0, 0);
		if (r < 0)
			goto err;
		r = sc_select_file(card, &path, NULL);
		if (r < 0)
			goto err;
		r = sc_read_binary(card, 0, all_certs, all_certs_len, 0);
		if (r < 0)
			goto err;
		if (r == 0) {
			r = SC_ERROR_FILE_NOT_FOUND;
			goto err;
		}

		all_certs_len = r;

		/* save EF_C_DevAut for further use */
		cert = realloc(priv->EF_C_DevAut, all_certs_len);
		if (cert) {
			memcpy((unsigned char *) cert, all_certs, all_certs_len);
			priv->EF_C_DevAut = (unsigned char *) cert;
			priv->EF_C_DevAut_len = all_certs_len;
		}

		cert = all_certs;
	}
	left = all_certs_len;

	device_cert = cert;
	r = sc_pkcs15emu_sc_hsm_decode_cvc(&p15card, &cert, &left, &cvc_device);
	if (r < 0)
		goto err;
	device_cert_len = all_certs_len - left;

	issuer_cert = cert;
	r = sc_pkcs15emu_sc_hsm_decode_cvc(&p15card, &cert, &left, &cvc_issuer);
	if (r < 0)
		goto err;
	issuer_cert_len = all_certs_len - device_cert_len - left;

	ctx = EAC_CTX_new();
	if (!ctx) {
		r = SC_ERROR_INTERNAL;
		goto err;
	}


	/* check all CVCs given of the document's pki */
	if (!TA_STEP2_import_certificate(ctx, issuer_cert, issuer_cert_len)
			|| !TA_STEP2_import_certificate(ctx, device_cert, device_cert_len)) {
		r = SC_ERROR_INTERNAL;
		goto err;
	}

	/* XXX on older JCOPs only NID_id_CA_ECDH_3DES_CBC_CBC may be
	 * supported. The card does not export its capabilities. We hardcode
	 * NID_id_CA_ECDH_AES_CBC_CMAC_128 here, because we don't have the older
	 * cards in production. */
	protocol = NID_id_CA_ECDH_AES_CBC_CMAC_128;

	/* initialize CA domain parameter with the document's public key */
	if (!EAC_CTX_init_ca(ctx, protocol, 8)) {
		r = SC_ERROR_INTERNAL;
		goto err;
	}
	EVP_PKEY_free(ctx->ca_ctx->ka_ctx->key);
	EVP_PKEY_up_ref(ctx->ta_ctx->pub_key);
	ctx->ca_ctx->ka_ctx->key = ctx->ta_ctx->pub_key;

	/* generate keys for CA */
	comp_pub_key = TA_STEP3_generate_ephemeral_key(ctx);
	r = perform_chip_authentication_ex(card, ctx,
			cvc_device.publicPoint, cvc_device.publicPointlen);

err:
	if (r < 0)
		EAC_CTX_clear_free(ctx);
	if (comp_pub_key)
		BUF_MEM_free(comp_pub_key);
	sc_pkcs15emu_sc_hsm_free_cvc(&cvc_device);
	sc_pkcs15emu_sc_hsm_free_cvc(&cvc_issuer);

	return r;
}

#else

static int sc_hsm_perform_chip_authentication(sc_card_t *card)
{
	return SC_ERROR_NOT_SUPPORTED;
}
#endif
#endif



static int sc_hsm_pin_cmd(sc_card_t *card, struct sc_pin_cmd_data *data,
			   int *tries_left)
{
	sc_hsm_private_data_t *priv = (sc_hsm_private_data_t *) card->drv_data;
	sc_apdu_t apdu;
	u8 cmdbuff[16];
#ifdef ENABLE_SM
	u8 rbuf[SC_MAX_APDU_BUFFER_SIZE];
#endif
	int r;
	int cmd = data->cmd;
	size_t pin2_len = data->pin2.len;

	if (cmd == SC_PIN_CMD_GET_SESSION_PIN) {
		/* First, perform a standard VERIFY */
		data->cmd = SC_PIN_CMD_VERIFY;
		/* we assign pin2.len to 0 early on so that in case of an error we are
		 * not exiting with an undefined session PIN */
		data->pin2.len = 0;
	}

	if ((card->caps & SC_CARD_CAP_PROTECTED_AUTHENTICATION_PATH)
		   	&& (data->cmd == SC_PIN_CMD_CHANGE)
		   	&& (data->pin_reference == 0x81)
			&& (!data->pin1.data || data->pin1.len <= 0)) {
		return sc_hsm_soc_change(card, data, tries_left);
	} else if ((card->caps & SC_CARD_CAP_PROTECTED_AUTHENTICATION_PATH)
		   	&& (data->cmd == SC_PIN_CMD_UNBLOCK)
		   	&& (data->pin_reference == 0x81)
			&& (!data->pin1.data || data->pin1.len <= 0)) {
		return sc_hsm_soc_unblock(card, data, tries_left);
	}

#ifdef ENABLE_SM
	/* For contactless cards always establish a secure channel before PIN
	 * verification. Also, Session PIN generation requires SM. */
	if ((card->type == SC_CARD_TYPE_SC_HSM_SOC
				|| card->type == SC_CARD_TYPE_SC_HSM_GOID
				|| card->reader->uid.len || cmd == SC_PIN_CMD_GET_SESSION_PIN)
			&& (data->cmd != SC_PIN_CMD_GET_INFO)) {
		struct sc_pin_cmd_data check_sm_pin_data;
		memset(&check_sm_pin_data, 0, sizeof(check_sm_pin_data));
		check_sm_pin_data.cmd = SC_PIN_CMD_GET_INFO;
		check_sm_pin_data.pin_type = data->pin_type;
		check_sm_pin_data.pin_reference = data->pin_reference;

		r = SC_ERROR_NOT_ALLOWED;
		if (card->sm_ctx.sm_mode == SM_MODE_TRANSMIT) {
			/* check if the existing SM channel is still valid */
			r = sc_pin_cmd(card, &check_sm_pin_data, NULL);
		}
		if (r == SC_ERROR_ASN1_OBJECT_NOT_FOUND || r == SC_ERROR_NOT_ALLOWED) {
			/* need to establish a new SM channel */
			LOG_TEST_RET(card->ctx,
					sc_hsm_perform_chip_authentication(card),
					"Could not perform chip authentication");
		}
	}
#endif

	if ((card->caps & SC_CARD_CAP_PROTECTED_AUTHENTICATION_PATH)
			&& (data->cmd == SC_PIN_CMD_VERIFY)
			&& (data->pin_reference == 0x81)
			&& (!data->pin1.data || data->pin1.len <= 0)) {
		r = sc_hsm_soc_biomatch(card, data, tries_left);
	} else {
		if ((data->cmd == SC_PIN_CMD_VERIFY) && (data->pin_reference == 0x88)) {
			if (data->pin1.len != 16)
				return SC_ERROR_INVALID_PIN_LENGTH;

			// Save SO PIN for later use in sc_hsm_init_pin()
			r = sc_hsm_encode_sopin(data->pin1.data, priv->sopin);
			LOG_TEST_RET(card->ctx, r, "APDU transmit failed");

			LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
		}

		if ((data->cmd == SC_PIN_CMD_CHANGE) && (data->pin_reference == 0x88)) {
			if ((data->pin1.len != 16) || (data->pin2.len != 16))
				return SC_ERROR_INVALID_PIN_LENGTH;

			r = sc_hsm_encode_sopin(data->pin1.data, cmdbuff);
			LOG_TEST_RET(card->ctx, r, "APDU transmit failed");

			r = sc_hsm_encode_sopin(data->pin2.data, cmdbuff + 8);
			LOG_TEST_RET(card->ctx, r, "APDU transmit failed");

			sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0x24, 0x00, data->pin_reference);
			apdu.data = cmdbuff;
			apdu.datalen = sizeof(cmdbuff);
			apdu.lc = 16;
			apdu.resplen = 0;
			data->apdu = &apdu;
		}

#ifdef ENABLE_SM
		if ((data->cmd == SC_PIN_CMD_GET_INFO)
				&& (card->sm_ctx.sm_mode == SM_MODE_TRANSMIT)) {
			/* JCOP's SM accelerator is incapable of using case 1 APDU in SM */
			sc_format_apdu(card, &apdu, SC_APDU_CASE_2, 0x20, 0x00, data->pin_reference);
			apdu.resp = rbuf;
			apdu.resplen = sizeof rbuf;
			data->apdu = &apdu;
		}
#endif

		data->pin1.offset = 5;
		data->pin1.length_offset = 4;
		data->pin2.offset = 5;
		data->pin2.length_offset = 4;

		r = (*iso_ops->pin_cmd)(card, data, tries_left);
	}
	LOG_TEST_RET(card->ctx, r, "Verification failed");

	if (cmd == SC_PIN_CMD_GET_SESSION_PIN) {
		/* reset data->cmd to its original value */
		data->cmd = SC_PIN_CMD_GET_SESSION_PIN;
		if (data->pin_reference == 0x81) {
			u8 recvbuf[SC_MAX_APDU_BUFFER_SIZE];
#ifdef ENABLE_SM
			if (card->sm_ctx.sm_mode != SM_MODE_TRANSMIT) {
				sc_log(card->ctx, 
						"Session PIN generation only supported in SM");
				LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
			}
#else
			sc_log(card->ctx, 
					"Session PIN generation only supported in SM");
			LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
#endif
			sc_format_apdu(card, &apdu, SC_APDU_CASE_2_SHORT, 0x5A, 0x01, data->pin_reference);
			apdu.cla = 0x80;
			apdu.resp = recvbuf;
			apdu.resplen = sizeof recvbuf;
			apdu.le = 0;
			if (sc_transmit_apdu(card, &apdu) != SC_SUCCESS
					|| sc_check_sw(card, apdu.sw1, apdu.sw2) != SC_SUCCESS) {
				sc_log(card->ctx, 
						"Generating session PIN failed");
				LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
			}
			if (data->pin2.data && pin2_len > 0) {
				if (pin2_len >= apdu.resplen) {
					memcpy((unsigned char *) data->pin2.data, apdu.resp,
							apdu.resplen);
					data->pin2.len = apdu.resplen;
				} else {
					sc_log(card->ctx, 
							"Buffer too small for session PIN");
				}
			}
		} else {
			sc_log(card->ctx, 
					"Session PIN not supported for this PIN (0x%02X)",
					data->pin_reference);
		}
	}
	LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
}



static int sc_hsm_logout(sc_card_t * card)
{
	sc_path_t path;
	sc_hsm_private_data_t *priv = (sc_hsm_private_data_t *) card->drv_data;
	memset(priv->sopin, 0, sizeof(priv->sopin));
#ifdef ENABLE_SM
	sc_sm_stop(card);
#endif

	sc_path_set(&path, SC_PATH_TYPE_DF_NAME, sc_hsm_aid.value, sc_hsm_aid.len, 0, 0);

	return sc_hsm_select_file_ex(card, &path, 1, NULL);
}



static int sc_hsm_read_binary(sc_card_t *card,
			       unsigned int idx, u8 *buf, size_t count,
			       unsigned long flags)
{
	sc_context_t *ctx = card->ctx;
	sc_apdu_t apdu;
	u8 cmdbuff[4];
	int r;

	if (idx > 0xffff) {
		sc_log(ctx,  "invalid EF offset: 0x%X > 0xFFFF", idx);
		return SC_ERROR_OFFSET_TOO_LARGE;
	}

	cmdbuff[0] = 0x54;
	cmdbuff[1] = 0x02;
	cmdbuff[2] = (idx >> 8) & 0xFF;
	cmdbuff[3] = idx & 0xFF;

	assert(count <= sc_get_max_recv_size(card));
	sc_format_apdu(card, &apdu, SC_APDU_CASE_4, 0xB1, 0x00, 0x00);
	apdu.data = cmdbuff;
	apdu.datalen = 4;
	apdu.lc = 4;
	apdu.le = count;
	apdu.resplen = count;
	apdu.resp = buf;

	r = sc_transmit_apdu(card, &apdu);
	LOG_TEST_RET(ctx, r, "APDU transmit failed");

	r =  sc_check_sw(card, apdu.sw1, apdu.sw2);
	if (r != SC_ERROR_FILE_END_REACHED) {
		LOG_TEST_RET(ctx, r, "Check SW error");
	}

	LOG_FUNC_RETURN(ctx, apdu.resplen);
}



static int sc_hsm_write_ef(sc_card_t *card,
			       int fid,
			       unsigned int idx, const u8 *buf, size_t count)
{
	sc_context_t *ctx = card->ctx;
	sc_apdu_t apdu;
	u8 *cmdbuff, *p;
	size_t len;
	int r;

	if (idx > 0xffff) {
		sc_log(ctx,  "invalid EF offset: 0x%X > 0xFFFF", idx);
		return SC_ERROR_OFFSET_TOO_LARGE;
	}

	cmdbuff = malloc(8 + count);
	if (!cmdbuff) {
		LOG_FUNC_RETURN(card->ctx, SC_ERROR_OUT_OF_MEMORY);
	}

	p = cmdbuff;
	*p++ = 0x54;
	*p++ = 0x02;
	*p++ = (idx >> 8) & 0xFF;
	*p++ = idx & 0xFF;
	*p++ = 0x53;
	if (count < 128) {
		*p++ = (u8) count;
		len = 6;
	} else if (count < 256) {
		*p++ = 0x81;
		*p++ = (u8) count;
		len = 7;
	} else {
		*p++ = 0x82;
		*p++ = (count >> 8) & 0xFF;
		*p++ = count & 0xFF;
		len = 8;
	}

	if (buf != NULL)
		memcpy(p, buf, count);
	len += count;

	sc_format_apdu(card, &apdu, SC_APDU_CASE_3, 0xD7, fid >> 8, fid & 0xFF);
	apdu.data = cmdbuff;
	apdu.datalen = len;
	apdu.lc = len;

	r = sc_transmit_apdu(card, &apdu);
	free(cmdbuff);
	LOG_TEST_RET(ctx, r, "APDU transmit failed");

	r =  sc_check_sw(card, apdu.sw1, apdu.sw2);
	LOG_TEST_RET(ctx, r, "Check SW error");

	LOG_FUNC_RETURN(ctx, count);
}



static int sc_hsm_update_binary(sc_card_t *card,
			       unsigned int idx, const u8 *buf, size_t count,
			       unsigned long flags)
{
	return sc_hsm_write_ef(card, 0, idx, buf, count);
}



static int sc_hsm_list_files(sc_card_t *card, u8 * buf, size_t buflen)
{
	sc_apdu_t apdu;
	u8 recvbuf[MAX_EXT_APDU_LENGTH];
	sc_hsm_private_data_t *priv = (sc_hsm_private_data_t *) card->drv_data;
	int r;

	if (priv->noExtLength) {
		sc_format_apdu(card, &apdu, SC_APDU_CASE_2, 0x58, 0, 0);
	} else {
		sc_format_apdu(card, &apdu, SC_APDU_CASE_2_EXT, 0x58, 0, 0);
	}
	apdu.cla = 0x80;
	apdu.resp = recvbuf;
	apdu.resplen = sizeof(recvbuf);
	apdu.le = 0;
	r = sc_transmit_apdu(card, &apdu);

	if ((r == SC_ERROR_TRANSMIT_FAILED) && (!priv->noExtLength)) {
		sc_log(card->ctx, "No extended length support ? Trying fall-back to short APDUs, probably breaking support for RSA 2048 operations");
		priv->noExtLength = 1;
		card->max_send_size = 248;		// 255 - 7 because of TLV in odd ins UPDATE BINARY
		return sc_hsm_list_files(card, buf, buflen);
	}
	LOG_TEST_RET(card->ctx, r, "ENUMERATE OBJECTS APDU transmit failed");

	memcpy(buf, recvbuf, buflen);

	LOG_FUNC_RETURN(card->ctx, apdu.resplen);
}



static int sc_hsm_create_file(sc_card_t *card, sc_file_t *file)
{
	int r;

	r = sc_hsm_write_ef(card, file->id, 0, NULL, 0);
	LOG_TEST_RET(card->ctx, r, "Create file failed");

	LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
}



static int sc_hsm_delete_file(sc_card_t *card, const sc_path_t *path)
{
	sc_context_t *ctx = card->ctx;
	sc_apdu_t apdu;
	u8 sbuf[2];
	int r;

	if ((path->type != SC_PATH_TYPE_FILE_ID) || (path->len != 2)) {
		sc_log(card->ctx,  "File type has to be SC_PATH_TYPE_FILE_ID");
		LOG_FUNC_RETURN(card->ctx, SC_ERROR_INVALID_ARGUMENTS);
	}

	sbuf[0] = path->value[0];
	sbuf[1] = path->value[1];

	sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0xE4, 0x02, 0x00);
	apdu.data = sbuf;
	apdu.datalen = sizeof(sbuf);
	apdu.lc = sizeof(sbuf);

	r = sc_transmit_apdu(card, &apdu);
	LOG_TEST_RET(ctx, r, "APDU transmit failed");

	r =  sc_check_sw(card, apdu.sw1, apdu.sw2);
	LOG_TEST_RET(ctx, r, "Check SW error");

	LOG_FUNC_RETURN(ctx, SC_SUCCESS);
}


static int sc_hsm_set_security_env(sc_card_t *card,
				   const sc_security_env_t *env,
				   int se_num)
{
	sc_hsm_private_data_t *priv = (sc_hsm_private_data_t *) card->drv_data;

	priv->env = env;

	switch(env->algorithm) {
	case SC_ALGORITHM_RSA:
		if (env->algorithm_flags & SC_ALGORITHM_RSA_PAD_PKCS1) {
			if (env->algorithm_flags & SC_ALGORITHM_RSA_HASH_SHA1) {
				priv->algorithm = ALGO_RSA_PKCS1_SHA1;
			} else if (env->algorithm_flags & SC_ALGORITHM_RSA_HASH_SHA256) {
				priv->algorithm = ALGO_RSA_PKCS1_SHA256;
			} else {
				priv->algorithm = ALGO_RSA_PKCS1;
			}
		} else if (env->algorithm_flags & SC_ALGORITHM_RSA_PAD_PSS) {
			priv->algorithm = ALGO_RSA_PSS;
		} else {
			if (env->operation == SC_SEC_OPERATION_DECIPHER) {
				priv->algorithm = ALGO_RSA_DECRYPT;
			} else {
				priv->algorithm = ALGO_RSA_RAW;
			}
		}
		break;
	case SC_ALGORITHM_EC:
		if (env->operation == SC_SEC_OPERATION_DERIVE) {
			priv->algorithm = ALGO_EC_DH;
		} else if (env->algorithm_flags & SC_ALGORITHM_ECDSA_HASH_NONE) {
			priv->algorithm = ALGO_EC_RAW;
		} else if (env->algorithm_flags & SC_ALGORITHM_ECDSA_HASH_SHA1) {
			priv->algorithm = ALGO_EC_SHA1;
		} else if (env->algorithm_flags & SC_ALGORITHM_ECDSA_HASH_SHA224) {
			priv->algorithm = ALGO_EC_SHA224;
		} else if (env->algorithm_flags & SC_ALGORITHM_ECDSA_HASH_SHA256) {
			priv->algorithm = ALGO_EC_SHA256;
		} else if (env->algorithm_flags & SC_ALGORITHM_ECDSA_RAW) {
			priv->algorithm = ALGO_EC_RAW;
		} else {
			LOG_FUNC_RETURN(card->ctx, SC_ERROR_INVALID_ARGUMENTS);
		}
		break;
	default:
		LOG_FUNC_RETURN(card->ctx, SC_ERROR_INVALID_ARGUMENTS);
		break;
	}
	LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
}



static int sc_hsm_decode_ecdsa_signature(sc_card_t *card,
					const u8 * data, size_t datalen,
					u8 * out, size_t outlen) {

	int i, r;
	size_t fieldsizebytes;
	const u8 *body, *tag;
	size_t bodylen, taglen;

	// Determine field size from length of signature
	if (datalen <= 58) {			// 192 bit curve = 24 * 2 + 10 byte maximum DER signature
		fieldsizebytes = 24;
	} else if (datalen <= 66) {		// 224 bit curve = 28 * 2 + 10 byte maximum DER signature
		fieldsizebytes = 28;
	} else if (datalen <= 74) {		// 256 bit curve = 32 * 2 + 10 byte maximum DER signature
		fieldsizebytes = 32;
	} else if (datalen <= 90) {		// 320 bit curve = 40 * 2 + 10 byte maximum DER signature
		fieldsizebytes = 40;
	} else if (datalen <= 106) {		// 384 bit curve = 48 * 2 + 10 byte maximum DER signature
		fieldsizebytes = 48;
	} else if (datalen <= 138) {		// 512 bit curve = 64 * 2 + 10 byte maximum DER signature
		fieldsizebytes = 64;
	} else {
		fieldsizebytes = 66;
	}

	sc_log(card->ctx,
	       "Field size %"SC_FORMAT_LEN_SIZE_T"u, signature buffer size %"SC_FORMAT_LEN_SIZE_T"u",
	       fieldsizebytes, outlen);

	if (outlen < (fieldsizebytes * 2)) {
		LOG_TEST_RET(card->ctx, SC_ERROR_INVALID_DATA, "output too small for EC signature");
	}
	memset(out, 0, outlen);

	// Copied from card-piv.c. Thanks
	body = sc_asn1_find_tag(card->ctx, data, datalen, 0x30, &bodylen);

	for (i = 0; i<2; i++) {
		if (body) {
			tag = sc_asn1_find_tag(card->ctx, body,  bodylen, 0x02, &taglen);
			if (tag) {
				bodylen -= taglen - (tag - body);
				body = tag + taglen;

				if (taglen > fieldsizebytes) { /* drop leading 00 if present */
					if (*tag != 0x00) {
						r = SC_ERROR_INVALID_DATA;
						goto err;
					}
					tag++;
					taglen--;
				}
				memcpy(out + fieldsizebytes*i + fieldsizebytes - taglen , tag, taglen);
			} else {
				r = SC_ERROR_INVALID_DATA;
				goto err;
			}
		} else  {
			r = SC_ERROR_INVALID_DATA;
			goto err;
		}
	}
	r = 2 * fieldsizebytes;
err:
	LOG_FUNC_RETURN(card->ctx, r);
}



static int sc_hsm_compute_signature(sc_card_t *card,
				     const u8 * data, size_t datalen,
				     u8 * out, size_t outlen)
{
	int r;
	sc_apdu_t apdu;
	u8 rbuf[514];
	sc_hsm_private_data_t *priv;

	if (card == NULL || data == NULL || out == NULL) {
		return SC_ERROR_INVALID_ARGUMENTS;
	}
	priv = (sc_hsm_private_data_t *) card->drv_data;

	if (priv->env == NULL) {
		LOG_FUNC_RETURN(card->ctx, SC_ERROR_OBJECT_NOT_FOUND);
	}

	sc_format_apdu(card, &apdu, SC_APDU_CASE_4_EXT, 0x68, priv->env->key_ref[0], priv->algorithm);
	apdu.cla = 0x80;
	apdu.resp = rbuf;
	apdu.resplen = sizeof(rbuf);
	apdu.le = 512;

	apdu.data = data;
	apdu.lc = datalen;
	apdu.datalen = datalen;
	r = sc_transmit_apdu(card, &apdu);

	LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
	if (apdu.sw1 == 0x90 && apdu.sw2 == 0x00) {
		int len;

		if ((priv->algorithm & 0xF0) == ALGO_EC_RAW) {
			len = sc_hsm_decode_ecdsa_signature(card, apdu.resp, apdu.resplen, out, outlen);
			if (len < 0) {
				LOG_FUNC_RETURN(card->ctx, len);
			}
		} else {
			len = apdu.resplen > outlen ? outlen : apdu.resplen;
			memcpy(out, apdu.resp, len);
		}
		LOG_FUNC_RETURN(card->ctx, len);
	}
	LOG_FUNC_RETURN(card->ctx, sc_check_sw(card, apdu.sw1, apdu.sw2));
}



static int sc_hsm_decipher(sc_card_t *card, const u8 * crgram, size_t crgram_len, u8 * out, size_t outlen)
{
	int r;
	size_t len;
	sc_apdu_t apdu;
	u8 rbuf[514];
	sc_hsm_private_data_t *priv;

	if (card == NULL || crgram == NULL || out == NULL) {
		return SC_ERROR_INVALID_ARGUMENTS;
	}
	LOG_FUNC_CALLED(card->ctx);
	priv = (sc_hsm_private_data_t *) card->drv_data;

	sc_format_apdu(card, &apdu, SC_APDU_CASE_4_EXT, 0x62, priv->env->key_ref[0], priv->algorithm);
	apdu.cla = 0x80;
	apdu.resp = rbuf;
	apdu.resplen = sizeof(rbuf);
	apdu.le = 512;

	apdu.data = (u8 *)crgram;
	apdu.lc = crgram_len;
	apdu.datalen = crgram_len;

	r = sc_transmit_apdu(card, &apdu);

	LOG_TEST_RET(card->ctx, r, "APDU transmit failed");
	if (apdu.sw1 == 0x90 && apdu.sw2 == 0x00) {
		if (priv->algorithm == ALGO_EC_DH) {
			//
			// The SmartCard-HSM returns the point result of the DH operation
			// with a leading '04'
			assert(apdu.resplen > 0);
			len = apdu.resplen - 1 > outlen ? outlen : apdu.resplen - 1;
			memcpy(out, apdu.resp + 1, len);
			LOG_FUNC_RETURN(card->ctx, len);
		} else {
			len = apdu.resplen > outlen ? outlen : apdu.resplen;
			memcpy(out, apdu.resp, len);
			LOG_FUNC_RETURN(card->ctx, len);
		}
	}
	else
		LOG_FUNC_RETURN(card->ctx, sc_check_sw(card, apdu.sw1, apdu.sw2));
}



void sc_hsm_set_serialnr(sc_card_t *card, char *serial)
{
	sc_hsm_private_data_t *priv = (sc_hsm_private_data_t *) card->drv_data;

	if (priv->serialno) {
		free(priv->serialno);
	}

	priv->serialno = strdup(serial);
}



static int sc_hsm_get_serialnr(sc_card_t *card, sc_serial_number_t *serial)
{
	sc_hsm_private_data_t *priv = (sc_hsm_private_data_t *) card->drv_data;

	LOG_FUNC_CALLED(card->ctx);

	if (!priv->serialno) {
		return SC_ERROR_OBJECT_NOT_FOUND;
	}

	serial->len = strlen(priv->serialno);
	if (serial->len > sizeof(serial->value))
		serial->len = sizeof(serial->value);

	memcpy(serial->value, priv->serialno, serial->len);

	LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
}



static int sc_hsm_initialize(sc_card_t *card, sc_cardctl_sc_hsm_init_param_t *params)
{
	sc_context_t *ctx = card->ctx;
	sc_pkcs15_tokeninfo_t ti;
	struct sc_pin_cmd_data pincmd;
	int r;
	size_t tilen;
	sc_apdu_t apdu;
	u8 ibuff[64+0xFF], *p;

	LOG_FUNC_CALLED(card->ctx);

	p = ibuff;
	*p++ = 0x80;	// Options
	*p++ = 0x02;
	memcpy(p, params->options, 2);
	p += 2;

	if (params->user_pin_len > 0xFF) {
		return SC_ERROR_INVALID_ARGUMENTS;
	}
	*p++ = 0x81;	// User PIN
	*p++ = (u8) params->user_pin_len;
	memcpy(p, params->user_pin, params->user_pin_len);
	p += params->user_pin_len;

	*p++ = 0x82;	// Initialization code
	*p++ = 0x08;
	memcpy(p, params->init_code, 8);
	p += 8;

	*p++ = 0x91;	// User PIN retry counter
	*p++ = 0x01;
	*p++ = params->user_pin_retry_counter;

	if (params->dkek_shares >= 0) {
		*p++ = 0x92;	// Number of DKEK shares
		*p++ = 0x01;
		*p++ = (u8)params->dkek_shares;
	}

	if (params->bio1.len) {
		*p++ = 0x95;
		*p++ = params->bio1.len;
		memcpy(p, params->bio1.value, params->bio1.len);
		p += params->bio1.len;
	}
	if (params->bio2.len) {
		*p++ = 0x96;
		*p++ = params->bio2.len;
		memcpy(p, params->bio2.value, params->bio2.len);
		p += params->bio2.len;
	}

	sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0x50, 0x00, 0x00);
	apdu.cla = 0x80;
	apdu.data = ibuff;
	apdu.datalen = p - ibuff;
	apdu.lc = apdu.datalen;

	r = sc_transmit_apdu(card, &apdu);
	LOG_TEST_RET(ctx, r, "APDU transmit failed");

	r =  sc_check_sw(card, apdu.sw1, apdu.sw2);

	if (r == SC_ERROR_NOT_ALLOWED) {
		r = SC_ERROR_PIN_CODE_INCORRECT;
	}

	LOG_TEST_RET(ctx, r, "Check SW error");

	if (params->label) {
		memset(&ti, 0, sizeof(ti));

		ti.label = params->label;
		ti.flags = SC_PKCS15_TOKEN_PRN_GENERATION;

		r = sc_pkcs15_encode_tokeninfo(ctx, &ti, &p, &tilen);
		LOG_TEST_RET(ctx, r, "Error encoding tokeninfo");

		memset(&pincmd, 0, sizeof(pincmd));
		pincmd.cmd = SC_PIN_CMD_VERIFY;
		pincmd.pin_type = SC_AC_CHV;
		pincmd.pin_reference = 0x81;
		pincmd.pin1.data = params->user_pin;
		pincmd.pin1.len = params->user_pin_len;

		r = (*iso_ops->pin_cmd)(card, &pincmd, NULL);
		LOG_TEST_RET(ctx, r, "Could not verify PIN");

		r = sc_hsm_write_ef(card, 0x2F03, 0, p, tilen);
		LOG_TEST_RET(ctx, r, "Could not write EF.TokenInfo");
	}

	LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
}



static int sc_hsm_import_dkek_share(sc_card_t *card, sc_cardctl_sc_hsm_dkek_t *params)
{
	sc_context_t *ctx = card->ctx;
	sc_apdu_t apdu;
	u8 status[SC_MAX_APDU_BUFFER_SIZE];
	int r;

	LOG_FUNC_CALLED(card->ctx);

	if (params->importShare) {
		sc_format_apdu(card, &apdu, SC_APDU_CASE_4_SHORT, 0x52, 0x00, 0x00);
		apdu.cla = 0x80;
		apdu.data = params->dkek_share;
		apdu.datalen = sizeof(params->dkek_share);
		apdu.lc = apdu.datalen;
	} else {
		sc_format_apdu(card, &apdu, SC_APDU_CASE_2_SHORT, 0x52, 0x00, 0x00);
	}
	apdu.cla = 0x80;
	apdu.le = 0;
	apdu.resp = status;
	apdu.resplen = sizeof(status);

	r = sc_transmit_apdu(card, &apdu);
	LOG_TEST_RET(ctx, r, "APDU transmit failed");

	r =  sc_check_sw(card, apdu.sw1, apdu.sw2);

	LOG_TEST_RET(ctx, r, "Check SW error");

	assert(apdu.resplen >= (sizeof(params->key_check_value) + 2));

	params->dkek_shares = status[0];
	params->outstanding_shares = status[1];
	memcpy(params->key_check_value, status + 2, sizeof(params->key_check_value));

	LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
}



static int sc_hsm_wrap_key(sc_card_t *card, sc_cardctl_sc_hsm_wrapped_key_t *params)
{
	sc_context_t *ctx = card->ctx;
	sc_apdu_t apdu;
	u8 data[1500];
	int r;

	LOG_FUNC_CALLED(card->ctx);

	sc_format_apdu(card, &apdu, SC_APDU_CASE_2_EXT, 0x72, params->key_id, 0x92);
	apdu.cla = 0x80;
	apdu.le = 0;
	apdu.resp = data;
	apdu.resplen = sizeof(data);

	r = sc_transmit_apdu(card, &apdu);
	LOG_TEST_RET(ctx, r, "APDU transmit failed");

	r =  sc_check_sw(card, apdu.sw1, apdu.sw2);

	LOG_TEST_RET(ctx, r, "Check SW error");

	if (params->wrapped_key == NULL) {
		params->wrapped_key_length = apdu.resplen;
		params->wrapped_key = malloc(apdu.resplen);
		if (params->wrapped_key == NULL) {
			LOG_FUNC_RETURN(card->ctx, SC_ERROR_OUT_OF_MEMORY);
		}
	} else {
		if (apdu.resplen > params->wrapped_key_length) {
			LOG_FUNC_RETURN(card->ctx, SC_ERROR_BUFFER_TOO_SMALL);
		}
		params->wrapped_key_length = apdu.resplen;
	}
	memcpy(params->wrapped_key, data, apdu.resplen);
	LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
}



static int sc_hsm_unwrap_key(sc_card_t *card, sc_cardctl_sc_hsm_wrapped_key_t *params)
{
	sc_context_t *ctx = card->ctx;
	sc_apdu_t apdu;
	int r;

	LOG_FUNC_CALLED(card->ctx);

	sc_format_apdu(card, &apdu, SC_APDU_CASE_3_EXT, 0x74, params->key_id, 0x93);
	apdu.cla = 0x80;
	apdu.lc = params->wrapped_key_length;
	apdu.data = params->wrapped_key;
	apdu.datalen = params->wrapped_key_length;

	r = sc_transmit_apdu(card, &apdu);
	LOG_TEST_RET(ctx, r, "APDU transmit failed");

	r =  sc_check_sw(card, apdu.sw1, apdu.sw2);

	LOG_TEST_RET(ctx, r, "Check SW error");

	LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
}



static int sc_hsm_init_token(sc_card_t *card, sc_cardctl_pkcs11_init_token_t *params)
{
	sc_context_t *ctx = card->ctx;
	sc_cardctl_sc_hsm_init_param_t ip;
	int r;
	char label[33],*cpo;

	LOG_FUNC_CALLED(ctx);

	if (params->so_pin_len != 16) {
		LOG_TEST_RET(ctx, SC_ERROR_INVALID_DATA, "SO PIN wrong length (!=16)");
	}

	memset(&ip, 0, sizeof(ip));
	ip.dkek_shares = -1;
	ip.options[0] = 0x00;
	ip.options[1] = 0x01;

	r = sc_hsm_encode_sopin(params->so_pin, ip.init_code);
	LOG_TEST_RET(ctx, r, "SO PIN wrong format");

	ip.user_pin = ip.init_code;		// Use the first 6 bytes of the SO-PIN as initial User-PIN value
	ip.user_pin_len = 6;
	ip.user_pin_retry_counter = 3;

	if (params->label) {
		// Strip trailing spaces
		memcpy(label, params->label, 32);
		label[32] = 0;
		cpo = label + 31;
		while ((cpo >= label) && (*cpo == ' ')) {
			*cpo = 0;
			cpo--;
		}
		ip.label = label;
	}

	r = sc_hsm_initialize(card, &ip);
	LOG_TEST_RET(ctx, r, "Check SW error");

	LOG_FUNC_RETURN(ctx, SC_SUCCESS);
}



static int sc_hsm_init_pin(sc_card_t *card, sc_cardctl_pkcs11_init_pin_t *params)
{
	sc_hsm_private_data_t *priv = (sc_hsm_private_data_t *) card->drv_data;
	sc_context_t *ctx = card->ctx;
	int r;
	sc_apdu_t apdu;
	u8 ibuff[50], *p;

	LOG_FUNC_CALLED(card->ctx);

	if (params->pin_len > 16) {
		LOG_TEST_RET(card->ctx, SC_ERROR_INVALID_DATA, "User PIN too long");
	}

	p = ibuff;

	memcpy(p, priv->sopin, sizeof(priv->sopin));
	p += sizeof(priv->sopin);

	memcpy(p, params->pin, params->pin_len);
	p += params->pin_len;

	sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0x2C, 0x00, 0x81);
	apdu.data = ibuff;
	apdu.datalen = p - ibuff;
	apdu.lc = apdu.datalen;

	r = sc_transmit_apdu(card, &apdu);
	LOG_TEST_RET(ctx, r, "APDU transmit failed");

	r =  sc_check_sw(card, apdu.sw1, apdu.sw2);

	// Cards before version 1.0 do not implement RESET_RETRY_COUNTER
	// For those cards the CHANGE REFERENCE DATA command is used instead
	if (r == SC_ERROR_INS_NOT_SUPPORTED) {
		p = ibuff;
		memcpy(p, priv->sopin, 6);
		p += 6;

		memcpy(p, params->pin, params->pin_len);
		p += params->pin_len;

		sc_format_apdu(card, &apdu, SC_APDU_CASE_3_SHORT, 0x24, 0x00, 0x81);
		apdu.data = ibuff;
		apdu.datalen = p - ibuff;
		apdu.lc = apdu.datalen;

		r = sc_transmit_apdu(card, &apdu);
		LOG_TEST_RET(ctx, r, "APDU transmit failed");

		r =  sc_check_sw(card, apdu.sw1, apdu.sw2);
	}

	LOG_TEST_RET(ctx, r, "Check SW error");

	memset(priv->sopin, 0, sizeof(priv->sopin));

	LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
}



static int sc_hsm_generate_keypair(sc_card_t *card, sc_cardctl_sc_hsm_keygen_info_t *keyinfo)
{
	u8 rbuf[1200];
	int r;
	sc_apdu_t apdu;

	LOG_FUNC_CALLED(card->ctx);

	sc_format_apdu(card, &apdu, SC_APDU_CASE_4_EXT, 0x46, keyinfo->key_id, keyinfo->auth_key_id);
	apdu.cla = 0x00;
	apdu.resp = rbuf;
	apdu.resplen = sizeof(rbuf);
	apdu.le = 0;

	apdu.data = keyinfo->gakprequest;
	apdu.lc = keyinfo->gakprequest_len;
	apdu.datalen = keyinfo->gakprequest_len;

	r = sc_transmit_apdu(card, &apdu);
	LOG_TEST_RET(card->ctx, r, "APDU transmit failed");

	r =  sc_check_sw(card, apdu.sw1, apdu.sw2);
	LOG_TEST_RET(card->ctx, r, "Check SW error");

	keyinfo->gakpresponse_len = apdu.resplen;
	keyinfo->gakpresponse = malloc(apdu.resplen);

	if (keyinfo->gakpresponse == NULL) {
		LOG_FUNC_RETURN(card->ctx, SC_ERROR_OUT_OF_MEMORY);
	}

	memcpy(keyinfo->gakpresponse, apdu.resp, apdu.resplen);

	LOG_FUNC_RETURN(card->ctx, SC_SUCCESS);
}



static int sc_hsm_card_ctl(sc_card_t *card, unsigned long cmd, void *ptr)
{
	switch (cmd) {
	case SC_CARDCTL_GET_SERIALNR:
		return sc_hsm_get_serialnr(card, (sc_serial_number_t *)ptr);
	case SC_CARDCTL_PKCS11_INIT_TOKEN:
		return sc_hsm_init_token(card, (sc_cardctl_pkcs11_init_token_t *)ptr);
	case SC_CARDCTL_PKCS11_INIT_PIN:
		return sc_hsm_init_pin(card, (sc_cardctl_pkcs11_init_pin_t *)ptr);
	case SC_CARDCTL_SC_HSM_GENERATE_KEY:
		return sc_hsm_generate_keypair(card, (sc_cardctl_sc_hsm_keygen_info_t *)ptr);
	case SC_CARDCTL_SC_HSM_INITIALIZE:
		return sc_hsm_initialize(card, (sc_cardctl_sc_hsm_init_param_t *)ptr);
	case SC_CARDCTL_SC_HSM_IMPORT_DKEK_SHARE:
		return sc_hsm_import_dkek_share(card, (sc_cardctl_sc_hsm_dkek_t *)ptr);
	case SC_CARDCTL_SC_HSM_WRAP_KEY:
		return sc_hsm_wrap_key(card, (sc_cardctl_sc_hsm_wrapped_key_t *)ptr);
	case SC_CARDCTL_SC_HSM_UNWRAP_KEY:
		return sc_hsm_unwrap_key(card, (sc_cardctl_sc_hsm_wrapped_key_t *)ptr);
	}
	return SC_ERROR_NOT_SUPPORTED;
}



static int sc_hsm_init(struct sc_card *card)
{
#if defined(ENABLE_OPENPACE) && defined(_WIN32)
	char expanded_val[PATH_MAX];
	size_t expanded_len = PATH_MAX;
#endif
	int flags,ext_flags;
	sc_file_t *file = NULL;
	sc_path_t path;
	sc_hsm_private_data_t *priv = card->drv_data;

	LOG_FUNC_CALLED(card->ctx);

	if (!priv) {
		priv = calloc(1, sizeof(sc_hsm_private_data_t));
		if (!priv)
			LOG_FUNC_RETURN(card->ctx, SC_ERROR_OUT_OF_MEMORY);
		card->drv_data = priv;
	}

	flags = SC_ALGORITHM_RSA_RAW|SC_ALGORITHM_RSA_PAD_PSS|SC_ALGORITHM_ONBOARD_KEY_GEN;

	_sc_card_add_rsa_alg(card, 1024, flags, 0);
	_sc_card_add_rsa_alg(card, 1536, flags, 0);
	_sc_card_add_rsa_alg(card, 2048, flags, 0);
	_sc_card_add_rsa_alg(card, 3072, flags, 0);
	_sc_card_add_rsa_alg(card, 4096, flags, 0);

	flags = SC_ALGORITHM_ECDSA_RAW|
		SC_ALGORITHM_ECDH_CDH_RAW|
		SC_ALGORITHM_ECDSA_HASH_NONE|
		SC_ALGORITHM_ECDSA_HASH_SHA1|
		SC_ALGORITHM_ECDSA_HASH_SHA224|
		SC_ALGORITHM_ECDSA_HASH_SHA256|
		SC_ALGORITHM_ONBOARD_KEY_GEN;

	ext_flags = SC_ALGORITHM_EXT_EC_F_P|
			SC_ALGORITHM_EXT_EC_ECPARAMETERS|
			SC_ALGORITHM_EXT_EC_NAMEDCURVE|
			SC_ALGORITHM_EXT_EC_UNCOMPRESES|
			SC_ALGORITHM_ONBOARD_KEY_GEN;
	_sc_card_add_ec_alg(card, 192, flags, ext_flags, NULL);
	_sc_card_add_ec_alg(card, 224, flags, ext_flags, NULL);
	_sc_card_add_ec_alg(card, 256, flags, ext_flags, NULL);
	_sc_card_add_ec_alg(card, 320, flags, ext_flags, NULL);
	_sc_card_add_ec_alg(card, 384, flags, ext_flags, NULL);
	_sc_card_add_ec_alg(card, 512, flags, ext_flags, NULL);
	_sc_card_add_ec_alg(card, 521, flags, ext_flags, NULL);

	card->caps |= SC_CARD_CAP_RNG|SC_CARD_CAP_APDU_EXT|SC_CARD_CAP_ISO7816_PIN_INFO;

	sc_path_set(&path, SC_PATH_TYPE_DF_NAME, sc_hsm_aid.value, sc_hsm_aid.len, 0, 0);
	if (sc_hsm_select_file_ex(card, &path, 0, &file) == SC_SUCCESS
			&& file && file->prop_attr && file->prop_attr_len >= 2) {
		static char card_name[SC_MAX_APDU_BUFFER_SIZE];
		u8 type = 0xFF;
		u8 major = file->prop_attr[file->prop_attr_len - 2];
		u8 minor = file->prop_attr[file->prop_attr_len - 1];
		char p00[] = "SmartCard-HSM Applet for JCOP";
		char p01[] = "SmartCard-HSM Demo Applet for JCOP";
		char *p = "SmartCard-HSM";
		if (file->prop_attr_len >= 3) {
			type = file->prop_attr[file->prop_attr_len - 3];
		}
		switch (type) {
			case 0x00:
				p = p00;
				break;
			case 0x01:
				p = p01;
				break;
			default:
				break;
		}
		snprintf(card_name, sizeof card_name, "%s version %u.%u", p, major, minor);
		card->name = card_name;

		if (file->prop_attr[1] & 0x04) {
			card->caps |= SC_CARD_CAP_SESSION_PIN;
		}
	}
	sc_file_free(file);

	// APDU Buffer limits
	//   JCOP 2.4.1r3           1462
	//   JCOP 2.4.2r3           1454
	//   JCOP 3                 1232
	//   MicroSD with JCOP 3    478 / 506
	//   Reiner SCT             1014

	card->max_send_size = 1232 - 17;	// 1232 buffer size - 17 byte header and TLV because of odd ins in UPDATE BINARY

	if (!strncmp("Secure Flash Card", card->reader->name, 17)) {
		card->max_send_size = 478 - 17;
		card->max_recv_size = 506 - 2;
	} else if (card->type == SC_CARD_TYPE_SC_HSM_SOC
			|| card->type == SC_CARD_TYPE_SC_HSM_GOID) {
		card->max_recv_size = 0x0630;	// SoC Proxy forces this limit
	} else {
		card->max_recv_size = 0;		// Card supports sending with extended length APDU and without limit
	}

	priv->EF_C_DevAut = NULL;
	priv->EF_C_DevAut_len = 0;

#ifdef ENABLE_OPENPACE
	EAC_init();
#ifdef _WIN32
	expanded_len = ExpandEnvironmentStringsA(CVCDIR, expanded_val, sizeof expanded_val);
	if (0 < expanded_len && expanded_len < sizeof expanded_val)
		EAC_set_cvc_default_dir(expanded_val);
#else
	EAC_set_cvc_default_dir(CVCDIR);
#endif
#endif

	return 0;
}



static int sc_hsm_finish(sc_card_t * card)
{
	sc_hsm_private_data_t *priv = (sc_hsm_private_data_t *) card->drv_data;
#ifdef ENABLE_SM
	sc_sm_stop(card);
#endif
	if (priv->serialno) {
		free(priv->serialno);
	}
	if (priv->dffcp) {
		sc_file_free(priv->dffcp);
	}
	free(priv->EF_C_DevAut);
	free(priv);

	return SC_SUCCESS;
}



static struct sc_card_driver * sc_get_driver(void)
{
	struct sc_card_driver *iso_drv = sc_get_iso7816_driver();

	if (iso_ops == NULL)
		iso_ops = iso_drv->ops;

	sc_hsm_ops                   = *iso_drv->ops;
	sc_hsm_ops.match_card        = sc_hsm_match_card;
	sc_hsm_ops.select_file       = sc_hsm_select_file;
	sc_hsm_ops.get_challenge     = sc_hsm_get_challenge;
	sc_hsm_ops.read_binary       = sc_hsm_read_binary;
	sc_hsm_ops.update_binary     = sc_hsm_update_binary;
	sc_hsm_ops.list_files        = sc_hsm_list_files;
	sc_hsm_ops.create_file       = sc_hsm_create_file;
	sc_hsm_ops.delete_file       = sc_hsm_delete_file;
	sc_hsm_ops.set_security_env  = sc_hsm_set_security_env;
	sc_hsm_ops.compute_signature = sc_hsm_compute_signature;
	sc_hsm_ops.decipher          = sc_hsm_decipher;
	sc_hsm_ops.init              = sc_hsm_init;
	sc_hsm_ops.finish            = sc_hsm_finish;
	sc_hsm_ops.card_ctl          = sc_hsm_card_ctl;
	sc_hsm_ops.pin_cmd           = sc_hsm_pin_cmd;
	sc_hsm_ops.logout            = sc_hsm_logout;

	/* no record oriented file services */
	sc_hsm_ops.read_record       = NULL;
	sc_hsm_ops.write_record      = NULL;
	sc_hsm_ops.append_record     = NULL;
	sc_hsm_ops.update_record     = NULL;

	return &sc_hsm_drv;
}



struct sc_card_driver * sc_get_sc_hsm_driver(void)
{
	return sc_get_driver();
}

