#include <dpl/exception.h>
namespace {
-inline std::string GetDefaultEncryptKeyPath() {
- return "/opt/share/widget/data/";
-}
+#define BITS_SIZE 128
+#define KEY_SIZE 16
}
namespace WRTDecryptor{
-ResourceDecryptor::ResourceDecryptor() :
- m_decKey(NULL)
+ResourceDecryptor::ResourceDecryptor()
{
LogDebug("Started Decryption");
}
-ResourceDecryptor::ResourceDecryptor(std::string userKey) :
- m_decKey(NULL)
+ResourceDecryptor::ResourceDecryptor(std::string userKey)
{
LogDebug("Finished Decryption");
SetDecryptionKey(userKey);
ResourceDecryptor::~ResourceDecryptor()
{
- delete m_decKey;
}
void ResourceDecryptor::SetDecryptionKey(std::string userKey)
{
- /* TODO : get key from secure storage */
- std::string keyPath = GetDefaultEncryptKeyPath() + userKey + "_dec";
- LogDebug("Description Key path : " << keyPath);
-
- FILE* fp = fopen(keyPath.c_str(), "rb");
- if (fp == NULL) {
- ThrowMsg(ResourceDecryptor::Exception::GetDecKeyFailed,
- "Failed to get decryption key");
+ if (userKey.empty()) {
+ return;
}
- m_decKey = new AES_KEY;
- size_t resultSize =fread(m_decKey, 1, sizeof(AES_KEY),fp);
- if (resultSize!= sizeof(AES_KEY))
- ThrowMsg(ResourceDecryptor::Exception::GetDecKeyFailed,
- "Failed to get AES key");
+ char **duk = calculate(const_cast<char*>(userKey.c_str()), userKey.size(), KEY_SIZE);
+ unsigned char *key = reinterpret_cast<unsigned char*>(*duk);
- fclose(fp);
+ if ( 0 > AES_set_decrypt_key(key, BITS_SIZE, &m_decKey)) {
+ ThrowMsg(ResourceDecryptor::Exception::GetDecKeyFailed,
+ "Failed to create decryption key");
+ }
}
AES_KEY* ResourceDecryptor::GetDecryptionKey()
{
- return m_decKey;
+ return &m_decKey;
}
void ResourceDecryptor::GetDecryptedChunk(unsigned char*
inBuf, unsigned char* decBuf, size_t inBufSize)
{
Assert(decBuf);
- Assert(m_decKey);
- if (decBuf == NULL || m_decKey == NULL) {
+ if (decBuf == NULL) {
ThrowMsg(ResourceDecryptor::Exception::EncryptionFailed,
"Failed to Get Decryption Chunk");
}
unsigned char ivec[16] = {0, };
- AES_cbc_encrypt(inBuf, decBuf, inBufSize, m_decKey, ivec, AES_DECRYPT);
+ AES_cbc_encrypt(inBuf, decBuf, inBufSize, &m_decKey, ivec, AES_DECRYPT);
LogDebug("Success decryption");
}
namespace {
#define BITS_SIZE 128
-const char* ENCRYPTION_FILE = "_enc";
-const char* DECRYPTION_FILE = "_dec";
-
-inline std::string GetDefaultEncryptKeyPath() {
- return "/opt/share/widget/data";
-}
+#define KEY_SIZE 16
}
namespace WRTEncryptor{
ResourceEncryptor::ResourceEncryptor()
return;
}
- AES_KEY decKey;
- const unsigned char* key = reinterpret_cast<unsigned char*>(
- const_cast<char*>(userKey.c_str()));
+ char **duk = calculate(const_cast<char*>(userKey.c_str()), userKey.size(), KEY_SIZE);
+ unsigned char *key = reinterpret_cast<unsigned char*>(*duk);
if ( 0 > AES_set_encrypt_key(key, BITS_SIZE, &m_encKey)) {
ThrowMsg(ResourceEncryptor::Exception::CreateEncKeyFailed,
"Failed to create encryption key");
}
- if ( 0 > AES_set_decrypt_key(key, BITS_SIZE, &decKey)) {
- ThrowMsg(ResourceEncryptor::Exception::CreateDecKeyFailed,
- "Failed to create decryption key");
- }
-
- std::string encPath, decPath;
-
- encPath = GetDefaultEncryptKeyPath() + "/" + userKey + ENCRYPTION_FILE;
- decPath = GetDefaultEncryptKeyPath() + "/" + userKey + DECRYPTION_FILE;
-
- /* TODO : save keys to secure storage */
- LogDebug("Encryption Key path " << encPath);
- LogDebug("Decryption Key path " << decPath);
-
- FILE* encFp = fopen(encPath.c_str(), "wb");
- if (encFp == NULL) {
- ThrowMsg(ResourceEncryptor::Exception::CreateEncKeyFileFailed,
- "Failed to save encryption key");
- }
- fwrite(&m_encKey, 1, sizeof(m_encKey), encFp);
- fclose(encFp);
-
- FILE* decFp = fopen(decPath.c_str(), "wb");
- if (decFp == NULL) {
- ThrowMsg(ResourceEncryptor::Exception::CreateDecKeyFileFailed,
- "Failed to save decryption key");
- }
-
- fwrite(&decKey, 1, sizeof(decKey), decFp);
- fclose(decFp);
LogDebug("Success to create ecryption and decryption key");
}