cryptoctx.c

来自「一个免费的SMART CARD OS系统。」· C语言 代码 · 共 77 行

/* ============================================================================
   Project Name : jayaCard
   Module Name  : proto/bios/crypto/cryptoctx.c
   Version : $Id: cryptoctx.c,v 1.1 2004/03/24 21:25:50 dgil Exp $

	Description: Crypto Context Management

    The Original Code is jayaCard code.

    The Initial Developer of the Original Code is Gilles Dumortier.

	Portions created by the Initial Developer are Copyright (C) 2002-2004 the
    Initial Developer. All Rights Reserved.

    Contributor(s):

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; see http://www.gnu.org/licenses/gpl.html

   History Rev	Description
   021504 dgil	wrote it from bios/init/initbios.c
   ============================================================================
*/

#include "precomp.h"

/* =========================================================================
	__bios_reset_context()

	Reset the context:
		- during BIOS initialisation
		- after an explicit request from the COS

	What to do ?
		- default cipher algo
		- deselect currentkey
		- set lasterr
		- reset seqval process if lasterr
   ========================================================================= */

void __bios_reset_context(jbyte err)
{
	/* reset cipher algo, current key, ... */
	BIOS_SETCIPHERALGO(JAYACFG_CIPHER_ALGO_DEFAULT);
    BIOS_SETPADDING(JAYACFG_CIPHER_PAD_DEFAULT);
	#ifdef JAYA_MAC
	BIOS_SETMACALGO(JAYACFG_CIPHER_MAC_DEFAULT);
	#endif
	currentkey_type = KEY_TYPE_NOKEY;

    /* set error and reset SeqVal process only if it is a real error ! */
    if (err != SUCCESS) {
		BIOS_SETERR(err);
        if (err != PENDING) {
            LOG1("BIOS","__bios_reset_context() err = %d / reset authentification process",err);
            BIOS_SET_SEQVAL(SEQVAL_NOPROCESS);
        }
    }

	/* cleanup the crypto context itself ... just in case its not already done */
	BIOS_CRYPTO_CLEANUP();
}

/* =========================================================================
	That's all folks !
   ========================================================================= */