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author | Dongsun Lee <ds73.lee@samsung.com> | 2015-05-26 09:42:38 +0900 |
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committer | Dongsun Lee <ds73.lee@samsung.com> | 2015-07-24 10:58:41 +0900 |
commit | 7abaa019637e0a534969d304cae7f7f43c4ab0a6 (patch) | |
tree | 9a2bb4f95b6c50ac39394abf87022d4a1a95fef2 /srcs/key_handler.c | |
parent | d6556f8d8b13aadc9907b6609b773e29d2e22e7a (diff) | |
download | libwebappenc-7abaa019637e0a534969d304cae7f7f43c4ab0a6.tar.gz libwebappenc-7abaa019637e0a534969d304cae7f7f43c4ab0a6.tar.bz2 libwebappenc-7abaa019637e0a534969d304cae7f7f43c4ab0a6.zip |
initial version
Change-Id: Ibb7891bee67bdd82f34187f5da2fc3c4bbfa8fcd
Signed-off-by: Dongsun Lee <ds73.lee@samsung.com>
Diffstat (limited to 'srcs/key_handler.c')
-rw-r--r-- | srcs/key_handler.c | 744 |
1 files changed, 744 insertions, 0 deletions
diff --git a/srcs/key_handler.c b/srcs/key_handler.c new file mode 100644 index 0000000..4ec4e5c --- /dev/null +++ b/srcs/key_handler.c @@ -0,0 +1,744 @@ +/* + * Copyright (c) 2000 - 2015 Samsung Electronics Co., Ltd All Rights Reserved + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License + * + * + * @file key_handler.c + * @author Dongsun Lee (ds73.lee@samsung.com) + * @version 1.0 + * @brief a header for key manupulatation. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <dirent.h> +#include <unistd.h> +#include <ckmc/ckmc-manager.h> +#include "wae_log.h" +#include "web_app_enc.h" +#include "key_handler.h" +#include "crypto_service.h" + +#include <tzplatform_config.h> + +#define APP_DEK_KEK_PRIKEY_PASSWORD "wae_appdek_kek_1q2w3e4r" + + +typedef struct _dek_cache_element{ + char pkgId[MAX_PKGID_LEN]; + unsigned char dek[DEK_LEN]; +} dek_cache_element; + +dek_cache_element APP_DEK_CACHE[MAX_CACHE_SIZE]; +int NEXT_CACHE_IDX = -1; + +void _initialize_cache() +{ + NEXT_CACHE_IDX = 0; + memset(APP_DEK_CACHE, 0, sizeof(dek_cache_element)*MAX_CACHE_SIZE); +} + +unsigned char* _get_app_dek_from_cache(const char* pkgId) +{ + int i = 0; + + if(NEXT_CACHE_IDX < 0) + _initialize_cache(); + + for(i =0; i<MAX_CACHE_SIZE; i++) { + //WAE_SLOGI("CACHED APP_DEK[%d]=%s", i, APP_DEK_CACHE[i].pkgId); + if( strlen(APP_DEK_CACHE[i].pkgId) == strlen(pkgId) && + strncmp(pkgId, APP_DEK_CACHE[i].pkgId, strlen(pkgId)) == 0) { + return APP_DEK_CACHE[i].dek; + } + } + return NULL; +} + +void _add_app_dek_to_cache(const char* pkgId, unsigned char* dek) +{ + int i = 0; + + if(NEXT_CACHE_IDX < 0) + _initialize_cache(); + + // if existing one has the same pkgid + for(i =0; i<MAX_CACHE_SIZE; i++) { + if( strlen(APP_DEK_CACHE[i].pkgId) == strlen(pkgId) && + strncmp(pkgId, APP_DEK_CACHE[i].pkgId, strlen(pkgId)) == 0) { + memcpy(APP_DEK_CACHE[i].dek, dek, DEK_LEN); + return; + } + } + + // for new pkgid + strncpy(APP_DEK_CACHE[NEXT_CACHE_IDX].pkgId, pkgId, strlen(pkgId)); + memcpy(APP_DEK_CACHE[NEXT_CACHE_IDX].dek, dek, DEK_LEN); + + NEXT_CACHE_IDX++; + if(NEXT_CACHE_IDX >= MAX_CACHE_SIZE) + NEXT_CACHE_IDX = 0; +} + +void _remove_app_dek_from_cache(const char* pkgId) +{ + int i = 0; + + for(i =0; i<MAX_CACHE_SIZE; i++) { + if( strlen(APP_DEK_CACHE[i].pkgId) == strlen(pkgId) && + strncmp(pkgId, APP_DEK_CACHE[i].pkgId, strlen(pkgId)) == 0) { + memset(APP_DEK_CACHE[i].pkgId, 0, sizeof(APP_DEK_CACHE[i].pkgId)); + return; + } + } + +} + +int _to_wae_error(int key_manager_error) +{ + switch(key_manager_error) { + case CKMC_ERROR_NONE: return WAE_ERROR_NONE; + case CKMC_ERROR_INVALID_PARAMETER: return WAE_ERROR_INVALID_PARAMETER; + case CKMC_ERROR_PERMISSION_DENIED: return WAE_ERROR_PERMISSION_DENIED; + case CKMC_ERROR_DB_ALIAS_UNKNOWN: return WAE_ERROR_NO_KEY; + case CKMC_ERROR_DB_ALIAS_EXISTS: return WAE_ERROR_KEY_EXISTS; + default: return WAE_ERROR_KEY_MANAGER; + } +} + +int _get_random(size_t length, unsigned char* random) +{ + FILE* f = NULL; + size_t i = 0; + int ch = 0; + //read random file + if((f = fopen(RANDOM_FILE, "r")) != NULL){ + while( i < length){ + if((ch = fgetc(f)) == EOF){ + break; + } + random[i] = (unsigned char) ch; + i++; + } + } + if(f != NULL) + fclose(f); + return WAE_ERROR_NONE; +} + +void _get_alias(const char* pPkgId, char* alias, size_t buff_len) +{ + snprintf(alias, buff_len, "%s%s%s%s", + ckmc_label_shared_owner, + ckmc_label_name_separator, + APP_DEK_ALIAS_PFX, + pPkgId); +} + +void _get_dek_kek_alias(char* alias, size_t buff_len) +{ + snprintf(alias, buff_len, "%s%s%s", + ckmc_label_shared_owner, + ckmc_label_name_separator, + APP_DEK_KEK_ALIAS); +} + +void _get_dek_loading_done_alias(char* alias, size_t buff_len) +{ + snprintf(alias, buff_len, "%s%s%s", + ckmc_label_shared_owner, + ckmc_label_name_separator, + APP_DEK_LOADING_DONE_ALIAS); +} + +const char* _get_dek_kek_pub_key_path() +{ + return tzplatform_mkpath4(TZ_SYS_SHARE, "wae", "app_dek", "WAE_APPDEK_KEK_PublicKey.pem"); +} + +const char* _get_dek_kek_pri_key_path() +{ + return tzplatform_mkpath4(TZ_SYS_SHARE, "wae", "app_dek", "WAE_APPDEK_KEK_PrivateKey.pem"); +} + +const char* _get_dek_store_path() +{ + return tzplatform_mkpath3(TZ_SYS_SHARE, "wae", "app_dek"); +} + +int _add_dek_to_key_manager(const char* pPkgId, const unsigned char* pDek, size_t len) +{ + int ret = WAE_ERROR_NONE; + char alias[MAX_ALIAS_LEN] = {0,}; + ckmc_raw_buffer_s buff; + ckmc_policy_s policy; + + buff.data = (unsigned char *)pDek; + buff.size = len; + + policy.password = NULL; + policy.extractable = true; + + // save app_dek in key_manager + _get_alias(pPkgId, alias, sizeof(alias)); + + // even if it fails to remove, ignore it. + ret = _to_wae_error( ckmc_remove_alias(alias)); + + ret = _to_wae_error(ckmc_save_data(alias, buff, policy)); + if(ret != WAE_ERROR_NONE) { + WAE_SLOGE("Fail to add APP_DEK to key-manager. pkgId=%s, ret=%d", pPkgId, ret); + goto error; + } + + // share app_dek for web app laucher to use app_dek + ret = _to_wae_error(ckmc_set_permission(alias, pPkgId, CKMC_PERMISSION_READ)); + if(ret != WAE_ERROR_NONE) { + WAE_SLOGE("Fail to set_permission to APP_DEK. pkgId=%s, ret=%d", pPkgId, ret); + goto error; + } + WAE_SLOGI("Success to add APP_DEK to key-manager. pkgId=%s", pPkgId); +error: + return ret; +} + + +int _get_preloaded_app_dek_file_path(const char* pPkgId, char *path) +{ + sprintf(path, "%s/%s_%s.adek", _get_dek_store_path(), APP_DEK_FILE_PFX, pPkgId); + return WAE_ERROR_NONE; +} + +int _extract_pkg_id_from_file_name(const char* fileName, char* pkgId) +{ + char* start = strstr(fileName, APP_DEK_FILE_PFX); + if(start == NULL){ + WAE_SLOGE("Fail to extract pkgid from APP_DEK file. fileName=%s", fileName); + return WAE_ERROR_FILE; + } + start = start + strlen(APP_DEK_FILE_PFX) + 1; + char* end = strstr(fileName, ".adek"); + if(start == NULL){ + WAE_SLOGE("Fail to extract pkgid from APP_DEK file. fileName=%s", fileName); + return WAE_ERROR_FILE; + } + strncpy(pkgId, start, end-start); + pkgId[end-start] = 0;//terminate string + return WAE_ERROR_NONE; +} + +int _read_encrypted_app_dek_from_file(const char* pPkgId, unsigned char** encrypted_app_dek, size_t *len) +{ + char path[MAX_PATH_LEN] = {0,}; + _get_preloaded_app_dek_file_path(pPkgId, path); + return _read_from_file(path, encrypted_app_dek, len); +} + +int _write_encrypted_app_dek_to_file(const char* pPkgId, const unsigned char* encrypted_app_dek, size_t len) +{ + char path[MAX_PATH_LEN] = {0,}; + _get_preloaded_app_dek_file_path(pPkgId, path); + return _write_to_file( path, encrypted_app_dek, len); +} + +int _read_from_file(const char* path, unsigned char** data, size_t* len) +{ + int ret = WAE_ERROR_NONE; + FILE* f = NULL; + int file_len = -1; + unsigned char* file_contents = NULL; + int ch = 0; + int i = 0; + + f = fopen(path, "r"); + if( f == NULL) { + WAE_SLOGE("Fail to open a file. file=%s", path); + ret = WAE_ERROR_FILE; + goto error; + } + + fseek(f, 0, SEEK_END); // move to the end of a file + file_len = ftell(f); + fseek(f, 0, SEEK_SET); // move to the start of a file + + file_contents = (unsigned char*) malloc(file_len); + if(file_contents == NULL) { + WAE_SLOGE("Fail to allocate memory for encrypted_app_dek"); + ret = WAE_ERROR_MEMORY; + goto error; + } + memset(file_contents, 0x00, file_len); + + while( (ch = fgetc(f)) != EOF) { + file_contents[i++]=(char)ch; + } + + *data = file_contents; + *len = file_len; + +error: + if(f != NULL) + fclose(f); + if(ret != WAE_ERROR_NONE && file_contents != NULL) + free(file_contents); + + return ret; +} + +int _write_to_file(const char* path, const unsigned char* data, size_t len) +{ + int ret = WAE_ERROR_NONE; + + FILE* f = NULL; + int write_len = -1; + + f = fopen(path, "w"); + if( f == NULL) { + WAE_SLOGE("Fail to open a file. file=%s", path); + ret = WAE_ERROR_FILE; + goto error; + } + + write_len = fwrite(data, 1, len, f); + if(write_len != (int) len) { + WAE_SLOGE("Fail to write a file. file=%s", path); + ret = WAE_ERROR_FILE; + goto error; + } +error: + if(f != NULL) + fclose(f); + + return ret; +} + +int get_app_dek(const char* pPkgId, unsigned char** ppDek, size_t* dekLen) +{ + int ret = WAE_ERROR_NONE; + + char* password = NULL; + ckmc_raw_buffer_s *pDekBuffer = NULL; + char alias[MAX_ALIAS_LEN] = {0,}; + unsigned char* pDek = NULL; + unsigned char* cached_dek = NULL; + + // get dek from cache + cached_dek = _get_app_dek_from_cache(pPkgId); + if(cached_dek == NULL) { + // get APP_DEK from system database + _get_alias(pPkgId, alias, sizeof(alias)); + + ret = _to_wae_error(ckmc_get_data(alias, password, &pDekBuffer)); + if(ret != WAE_ERROR_NONE) { + WAE_SLOGE("Fail to get APP_DEK from key-manager. alias=%s, ret=%d", alias, ret); + goto error; + } + } + + pDek = (unsigned char*) malloc(DEK_LEN); + if(pDek == NULL) { + WAE_SLOGE("Fail to allocate a memory"); + ret = WAE_ERROR_MEMORY; + goto error; + } + memcpy(pDek, (cached_dek != NULL) ? cached_dek : pDekBuffer->data, DEK_LEN); + + *ppDek = pDek; + *dekLen = DEK_LEN; + WAE_SLOGI("Success to get APP_DEK from key-manager. pkgId=%s", pPkgId); +error: + if(pDekBuffer != NULL) + ckmc_buffer_free(pDekBuffer); + if(ret != WAE_ERROR_NONE && pDek != NULL) + free(pDek); + + return ret; +} + +int create_app_dek(const char* pPkgId, unsigned char** ppDek, size_t* dekLen) +{ + int ret = WAE_ERROR_NONE; + unsigned char *dek= NULL; + + dek = (unsigned char*) malloc(DEK_LEN); + if(dek == NULL) { + ret = WAE_ERROR_MEMORY; + goto error; + } + + ret = _get_random(DEK_LEN, dek); + if(ret != WAE_ERROR_NONE) { + WAE_SLOGE("Fail to get random for APP_DEK. pkgId=%s, ret=%d", pPkgId, ret); + goto error; + } + + // save app_dek in key_manager + ret = _add_dek_to_key_manager(pPkgId, dek, DEK_LEN); + if(ret != WAE_ERROR_NONE) { + goto error; + } + + // store APP_DEK in cache + _add_app_dek_to_cache(pPkgId, dek); + + *ppDek = dek; + *dekLen = DEK_LEN; + + WAE_SLOGI("Success to create APP_DEK and store it in key-manager. pkgId=%s", pPkgId); +error: + if(ret != WAE_ERROR_NONE && dek != NULL) + free(dek); + + return ret; +} + +int get_preloaded_app_dek(const char* pPkgId, unsigned char** ppDek, size_t* dekLen) +{ + int ret = WAE_ERROR_NONE; + unsigned char* cached_dek= NULL; + unsigned char* dek = NULL; + + // get dek from cache + cached_dek = _get_app_dek_from_cache(pPkgId); + if(cached_dek == NULL) { + WAE_SLOGE("Fail to get APP_DEK from cache for preloaded app"); + ret = WAE_ERROR_NO_KEY; + goto error; + } + + dek = (unsigned char*) malloc(DEK_LEN); + if(dek == NULL) { + WAE_SLOGE("Fail to allocate memory for preloaded app dek"); + ret = WAE_ERROR_MEMORY; + goto error; + } + memcpy(dek, cached_dek, DEK_LEN); + + *ppDek = dek; + *dekLen = DEK_LEN; +error: + if(ret != WAE_ERROR_NONE && dek != NULL) + free(dek); + + return ret; +} + +int create_preloaded_app_dek(const char* pPkgId, unsigned char** ppDek, size_t* dekLen) +{ + int ret = WAE_ERROR_NONE; + unsigned char* dek = NULL; + unsigned char* encrypted_app_dek = NULL; + size_t encrypted_app_dek_len = 0; + unsigned char* pubKey = NULL; + size_t pubKeyLen = 0; + + // create APP_DEK + dek = (unsigned char*) malloc(DEK_LEN); + if(dek == NULL) { + ret = WAE_ERROR_MEMORY; + goto error; + } + + ret = _get_random(DEK_LEN, dek); + if(ret != WAE_ERROR_NONE) { + goto error; + } + + // encrypt APP_DEK with APP_DEK_KEK + ret = _read_from_file(_get_dek_kek_pub_key_path(), &pubKey, &pubKeyLen); + if(ret != WAE_ERROR_NONE) { + WAE_SLOGE("Fail to read APP_DEK_KEK Public Key"); + goto error; + } + + ret = encrypt_app_dek(pubKey, pubKeyLen, dek, DEK_LEN, &encrypted_app_dek, &encrypted_app_dek_len); + if(ret != WAE_ERROR_NONE) { + WAE_SLOGE("Fail to encrypt APP_DEK with APP_DEK_KEK"); + goto error; + } + + // write APP_DEK in a file + ret = _write_encrypted_app_dek_to_file(pPkgId, encrypted_app_dek, encrypted_app_dek_len); + if(ret != WAE_ERROR_NONE) { + WAE_SLOGE("Fail to write encrypted APP_DEK. pkgId=%s", pPkgId); + goto error; + } + + // store APP_DEK in cache + _add_app_dek_to_cache(pPkgId, dek); + + *ppDek = dek; + *dekLen = DEK_LEN; + WAE_SLOGI("Success to create preleaded APP_DEK and write it in initail value file. pkgId=%s", pPkgId); + +error: + if(pubKey != NULL) + free(pubKey); + if(encrypted_app_dek != NULL) + free(encrypted_app_dek); + if(ret != WAE_ERROR_NONE && dek != NULL) + free(dek); + return ret; +} + + +int _get_app_dek_kek(unsigned char** ppDekKek, size_t* kekLen) +{ + int ret = WAE_ERROR_NONE; + + ret = _read_from_file(_get_dek_kek_pri_key_path(), ppDekKek, kekLen); + if(ret != WAE_ERROR_NONE) { + WAE_SLOGE("Fail to read APP_DEK_KEK Private Key"); + return ret; + } +/* + char* password = NULL; + ckmc_raw_buffer_s *pKekBuffer = NULL; + unsigned char* pKek = NULL; + + char dek_kek_alias[MAX_ALIAS_LEN] = {0, }; + _get_dek_kek_alias(dek_kek_alias, sizeof(dek_kek_alias)); + + ret = _to_wae_error(ckmc_get_data(dek_kek_alias, password, &pKekBuffer)); + if(ret != WAE_ERROR_NONE) { + WAE_SLOGE("Fail to get APP_DEK_KEK from key-manager. alias=%s, ret=%d", APP_DEK_KEK_ALIAS, ret); + goto error; + } + + pKek = (unsigned char*) malloc(pKekBuffer->size); + if(pKek == NULL) { + WAE_SLOGE("Fail to allocate a memory"); + ret = WAE_ERROR_MEMORY; + goto error; + } + memcpy(pKek, pKekBuffer->data, pKekBuffer->size); + + *ppDekKek = pKek; + *kekLen = pKekBuffer->size; + WAE_SLOGI("Success to get APP_DEK_KEK from key-manager."); +error: + if(pKekBuffer != NULL) + ckmc_buffer_free(pKekBuffer); + if(ret != WAE_ERROR_NONE && pKek != NULL) + free(pKek); +*/ + return ret; +} + + +int _get_app_deks_loaded() +{ + int ret = WAE_ERROR_NONE; + + ckmc_raw_buffer_s *pBuffer = NULL; + char loading_done_alias[MAX_ALIAS_LEN] = {0, }; + + _get_dek_loading_done_alias(loading_done_alias, sizeof(loading_done_alias)); + + ret = _to_wae_error(ckmc_get_data(loading_done_alias, NULL, &pBuffer)); + if(ret == WAE_ERROR_NO_KEY) { + WAE_SLOGI("APP_DEK_LOADING was not done"); + } else if(ret == WAE_ERROR_NONE) { + WAE_SLOGI("APP_DEK_LOADING was already done"); + } else { + WAE_SLOGE("Fail to get information from key-manager about APP_DEK_LOADING_DONE_ALIAS. ret=%d", ret); + goto error; + } + +error: + if(pBuffer != NULL) + ckmc_buffer_free(pBuffer); + + return ret; +} + +int _set_app_deks_loaded() +{ + int ret = WAE_ERROR_NONE; + ckmc_raw_buffer_s buff; + ckmc_policy_s policy; + unsigned char dummyData[1] = {0}; + + buff.data = dummyData; + buff.size = sizeof(dummyData); + + policy.password = NULL; + policy.extractable = true; + + char loading_done_alias[MAX_ALIAS_LEN] = {0, }; + _get_dek_loading_done_alias(loading_done_alias, sizeof(loading_done_alias)); + + ret = _to_wae_error(ckmc_save_data(loading_done_alias, buff, policy)); + if(ret == WAE_ERROR_KEY_EXISTS) { + WAE_SLOGI("APP_DEK_LOADING was already done"); + ret = WAE_ERROR_NONE; + } else if(ret != WAE_ERROR_NONE) { + WAE_SLOGE("Fail to set APP_DEK_LOADING_DONE_ALIAS to key-manager. ret=%d", ret); + goto error; + } + + WAE_SLOGI("Success to set APP_DEK_LOADING_DONE_ALIAS to key-manager."); +error: + return ret; +} + +int _clear_app_deks_loaded() +{ + int ret = WAE_ERROR_NONE; + char loading_done_alias[MAX_ALIAS_LEN] = {0, }; + _get_dek_loading_done_alias(loading_done_alias, sizeof(loading_done_alias)); + + ret = _to_wae_error(ckmc_remove_alias(loading_done_alias)); + if(ret == WAE_ERROR_NO_KEY) { + WAE_SLOGI("APP_DEK_LOADING_DONE_ALIAS was not set to key-manager before."); + ret = WAE_ERROR_NONE; + }else if(ret != WAE_ERROR_NONE) { + WAE_SLOGE("Fail to clear APP_DEK_LOADING_DONE_ALIAS to key-manager. ret=%d", ret); + } + + return ret; +} + +int load_preloaded_app_deks(int reload) +{ + int ret = WAE_ERROR_NONE; + + char pkgId[MAX_PKGID_LEN] = {0, }; + + DIR *dir = NULL; + struct dirent entry; + struct dirent *result; + int error; + char file_path_buff[MAX_PATH_LEN]; + unsigned char* encrypted_app_dek = NULL; + size_t encrypted_app_dek_len = 0; + unsigned char* app_dek = NULL; + size_t app_dek_len = 0; + unsigned char* priKey = NULL; + size_t priKeyLen = 0; + + int error_during_loading = 0; + + if(reload != WAE_TRUE) { + // check if all deks were already loaded into key-manager. + ret = _get_app_deks_loaded(); + if(ret == WAE_ERROR_NONE) { + return ret; + } + } + + ret = _get_app_dek_kek(&priKey, &priKeyLen); + if(ret != WAE_ERROR_NONE) { + WAE_SLOGE("Fail to get APP_DEK_KEK Private Key"); + return ret; + } + + dir = opendir(_get_dek_store_path()); + if(dir == NULL) { + WAE_SLOGE("Fail to open dir. dir=%s", _get_dek_store_path()); + ret = WAE_ERROR_FILE; + goto error; + } + + for(;;) { + error = readdir_r(dir, &entry, &result); + if( error != 0 ) { + ret = WAE_ERROR_FILE; + goto error; + } + // readdir_r returns NULL in *result if the end + // of the directory stream is reached + if(result == NULL) + break; + + // regular file && start with KEY_MANAGER_INITIAL_VALUE_FILE_PFX + if(entry.d_type == DT_REG && strstr(entry.d_name, APP_DEK_FILE_PFX) != NULL) { + memset(file_path_buff, 0, sizeof(file_path_buff)); + sprintf(file_path_buff, "%s/%s", _get_dek_store_path(), entry.d_name); + + ret = _extract_pkg_id_from_file_name(entry.d_name, pkgId); + if(ret != WAE_ERROR_NONE) { + WAE_SLOGW("Fail to extract pkgid from file. It will be ignored. file=%s",file_path_buff); + continue; + } + + ret = _read_from_file(file_path_buff, &encrypted_app_dek, &encrypted_app_dek_len); + if(ret != WAE_ERROR_NONE || encrypted_app_dek == NULL) { + error_during_loading++; + WAE_SLOGW("Fail to read file. It will be ignored. file=%s",file_path_buff); + continue; + } + + ret = decrypt_app_dek(priKey, priKeyLen, APP_DEK_KEK_PRIKEY_PASSWORD, + encrypted_app_dek, encrypted_app_dek_len, + &app_dek, &app_dek_len); + if(ret != WAE_ERROR_NONE || app_dek == NULL) { + error_during_loading++; + WAE_SLOGW("Fail to decrypt APP DEK. It will be ignored. file=%s",file_path_buff); + continue; + } + + // save app_dek in key_manager + ret = _add_dek_to_key_manager(pkgId, app_dek, app_dek_len); + // free temp objects + free(app_dek); + free(encrypted_app_dek); + app_dek = NULL; + encrypted_app_dek = NULL; + + if(ret == WAE_ERROR_KEY_EXISTS) { + WAE_SLOGI("Key Manager already has APP_DEK. It will be ignored. file=%s",file_path_buff); + continue; + }else if(ret != WAE_ERROR_NONE) { + error_during_loading++; + WAE_SLOGW("Fail to add APP DEK to key-manager. file=%s",file_path_buff); + continue; + } + } + } + + ret = _set_app_deks_loaded(); + if(ret == WAE_ERROR_NONE) { + WAE_SLOGI("Success to load_preloaded_app_deks"); + ret = WAE_ERROR_NONE; + }else { + WAE_SLOGW("Fail to _set_app_deks_loaded to key-manager. ret=%d", ret); + } +error: + if(priKey != NULL) + free(priKey); + + return ret; +} + + +int remove_app_dek(const char* pPkgId) +{ + int ret = CKMC_ERROR_NONE; + char alias[MAX_ALIAS_LEN] = {0,}; + + _get_alias(pPkgId, alias,sizeof(alias)); + + ret = _to_wae_error(ckmc_remove_alias(alias)); + if(ret != WAE_ERROR_NONE) { + WAE_SLOGE("Fail to remove APP_DEK from key-manager. pkgId=%s, alias=%s, ret=%d", pPkgId, alias, ret); + goto error; + } + + _remove_app_dek_from_cache(pPkgId); + WAE_SLOGI("Success to remove APP_DEK from key-manager. pkgId=%s", pPkgId); +error: + return WAE_ERROR_NONE; +} |