130 lines
3.2 KiB
C
130 lines
3.2 KiB
C
/*
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* Copyright (c) 2015 Samsung Electronics Co., Ltd.
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*
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* Sensitive Data Protection
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <linux/kernel.h>
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#include <linux/stat.h>
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#include <linux/string.h>
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#include <sdp/dek_common.h>
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static int g_asym_alg = SDPK_DEFAULT_ALGOTYPE;
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#define ALG_NAME_RSA_NAME "RSA"
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#define ALG_NAME_DH_NAME "DH"
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#define ALG_NAME_ECDH_NAME "ECDH"
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static ssize_t dek_show_asym_alg(struct device *dev,
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struct device_attribute *attr, char *buf) {
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switch(g_asym_alg) {
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case SDPK_ALGOTYPE_ASYMM_RSA:
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return sprintf(buf, "%s\n", ALG_NAME_RSA_NAME);
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case SDPK_ALGOTYPE_ASYMM_DH:
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return sprintf(buf, "%s\n", ALG_NAME_DH_NAME);
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case SDPK_ALGOTYPE_ASYMM_ECDH:
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return sprintf(buf, "%s\n", ALG_NAME_ECDH_NAME);
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default:
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return sprintf(buf, "unknown\n");
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}
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return 0;
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}
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static ssize_t dek_set_asym_alg(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count) {
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if(!strncmp(ALG_NAME_RSA_NAME, buf, strlen(ALG_NAME_RSA_NAME))) {
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g_asym_alg = SDPK_ALGOTYPE_ASYMM_RSA;
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return strlen(ALG_NAME_RSA_NAME);
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}
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if(!strncmp(ALG_NAME_DH_NAME, buf, strlen(ALG_NAME_DH_NAME))) {
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g_asym_alg = SDPK_ALGOTYPE_ASYMM_DH;
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return strlen(ALG_NAME_DH_NAME);
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}
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if(!strncmp(ALG_NAME_ECDH_NAME, buf, strlen(ALG_NAME_ECDH_NAME))) {
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g_asym_alg = SDPK_ALGOTYPE_ASYMM_ECDH;
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return strlen(ALG_NAME_ECDH_NAME);
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}
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return -1;
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}
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static DEVICE_ATTR(asym_alg, S_IRUSR | S_IWUSR, dek_show_asym_alg, dek_set_asym_alg);
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int dek_create_sysfs_asym_alg(struct device *d) {
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int error;
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if((error = device_create_file(d, &dev_attr_asym_alg)))
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return error;
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return 0;
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}
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int get_sdp_sysfs_asym_alg(void) {
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return g_asym_alg;
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}
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#ifdef CONFIG_SDP_KEY_DUMP
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static int kek_dump = 0;
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static ssize_t dek_show_key_dump(struct device *dev,
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struct device_attribute *attr, char *buf) {
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return sprintf(buf, "%d\n", kek_dump);
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}
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static ssize_t dek_set_key_dump(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count) {
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int flag = simple_strtoul(buf, NULL, 10);
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kek_dump = flag;
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return strlen(buf);
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}
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static DEVICE_ATTR(key_dump, S_IRUGO | S_IWUGO, dek_show_key_dump, dek_set_key_dump);
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int dek_create_sysfs_key_dump(struct device *d) {
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int error;
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if((error = device_create_file(d, &dev_attr_key_dump)))
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return error;
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return 0;
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}
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int get_sdp_sysfs_key_dump(void) {
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return kek_dump;
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}
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#else
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int dek_create_sysfs_key_dump(struct device *d) {
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printk("key_dump feature not available\n");
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return 0;
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}
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int get_sdp_sysfs_key_dump(void) {
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printk("key_dump feature not available\n");
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return 0;
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}
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#endif
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