133 lines
2.9 KiB
C
133 lines
2.9 KiB
C
/*
|
|
* Copyright (c) 2015 Samsung Electronics Co., Ltd.
|
|
*
|
|
* Sensitive Data Protection
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/stat.h>
|
|
#include <linux/string.h>
|
|
|
|
#include <sdp/dek_common.h>
|
|
|
|
static int g_asym_alg = SDPK_DEFAULT_ALGOTYPE;
|
|
|
|
#define ALG_NAME_RSA_NAME "RSA"
|
|
#define ALG_NAME_DH_NAME "DH"
|
|
#define ALG_NAME_ECDH_NAME "ECDH"
|
|
|
|
static ssize_t dek_show_asym_alg(struct device *dev,
|
|
struct device_attribute *attr, char *buf) {
|
|
|
|
switch (g_asym_alg) {
|
|
case SDPK_ALGOTYPE_ASYMM_RSA:
|
|
return sprintf(buf, "%s\n", ALG_NAME_RSA_NAME);
|
|
case SDPK_ALGOTYPE_ASYMM_DH:
|
|
return sprintf(buf, "%s\n", ALG_NAME_DH_NAME);
|
|
case SDPK_ALGOTYPE_ASYMM_ECDH:
|
|
return sprintf(buf, "%s\n", ALG_NAME_ECDH_NAME);
|
|
default:
|
|
return sprintf(buf, "unknown\n");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t dek_set_asym_alg(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count) {
|
|
if (!strncmp(ALG_NAME_RSA_NAME, buf, strlen(ALG_NAME_RSA_NAME))) {
|
|
g_asym_alg = SDPK_ALGOTYPE_ASYMM_RSA;
|
|
return strlen(ALG_NAME_RSA_NAME);
|
|
}
|
|
|
|
if (!strncmp(ALG_NAME_DH_NAME, buf, strlen(ALG_NAME_DH_NAME))) {
|
|
g_asym_alg = SDPK_ALGOTYPE_ASYMM_DH;
|
|
return strlen(ALG_NAME_DH_NAME);
|
|
}
|
|
|
|
if (!strncmp(ALG_NAME_ECDH_NAME, buf, strlen(ALG_NAME_ECDH_NAME))) {
|
|
g_asym_alg = SDPK_ALGOTYPE_ASYMM_ECDH;
|
|
return strlen(ALG_NAME_ECDH_NAME);
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static DEVICE_ATTR(asym_alg, S_IRUSR | S_IWUSR, dek_show_asym_alg, dek_set_asym_alg);
|
|
|
|
int dek_create_sysfs_asym_alg(struct device *d)
|
|
{
|
|
int error;
|
|
|
|
error = device_create_file(d, &dev_attr_asym_alg);
|
|
if (error)
|
|
return error;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int get_sdp_sysfs_asym_alg(void)
|
|
{
|
|
return g_asym_alg;
|
|
}
|
|
|
|
#ifdef CONFIG_SDP_KEY_DUMP
|
|
static int kek_dump;
|
|
|
|
static ssize_t dek_show_key_dump(struct device *dev,
|
|
struct device_attribute *attr, char *buf) {
|
|
return sprintf(buf, "%d\n", kek_dump);
|
|
}
|
|
|
|
static ssize_t dek_set_key_dump(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count) {
|
|
int flag = simple_strtoul(buf, NULL, 10);
|
|
|
|
kek_dump = flag;
|
|
|
|
return strlen(buf);
|
|
}
|
|
|
|
static DEVICE_ATTR(key_dump, 0664, dek_show_key_dump, dek_set_key_dump);
|
|
|
|
int dek_create_sysfs_key_dump(struct device *d)
|
|
{
|
|
int error;
|
|
|
|
error = device_create_file(d, &dev_attr_key_dump);
|
|
if (error)
|
|
return error;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int get_sdp_sysfs_key_dump(void)
|
|
{
|
|
return kek_dump;
|
|
}
|
|
#else
|
|
int dek_create_sysfs_key_dump(struct device *d)
|
|
{
|
|
printk("key_dump feature not available");
|
|
|
|
return 0;
|
|
}
|
|
|
|
int get_sdp_sysfs_key_dump(void)
|
|
{
|
|
printk("key_dump feature not available");
|
|
|
|
return 0;
|
|
}
|
|
#endif
|