Change file architecture

2 files changed, 280 insertions, 0 deletions

diff --git a/src/IOFileClass/FileManIOFile.cpp b/src/IOFileClass/FileManIOFile.cpp
new file mode 100644
index 0000000..ea49201
--- /dev/null
+++ b/src/IOFileClass/FileManIOFile.cpp
@@ -0,0 +1,147 @@
+/**
+ * @file FileManIOFile.cpp
+ * @brief FileManIOFile class definitions
+ * @author manzerbredes
+ * @date 9 Mars 2015
+ *
+ * Contain all definitions of FileManIOFile class.
+ *
+ */
+
+
+#include "FileManIOFile.hpp"
+
+//Constructor with filename
+FileManIOFile::FileManIOFile(std::string filename){
+    this->filename=filename;
+    this->readable=false;
+    this->data="";
+    this->key;
+}
+
+//Destructor
+FileManIOFile::~FileManIOFile(){
+}
+
+
+
+//Read the filename with a key
+void FileManIOFile::read(std::string key){
+
+    //create file object
+    std::ifstream file;
+
+    //Clear data
+    this->data.clear();
+
+    //Open file
+    file.open (this->filename, std::ios::in | std::ios::binary);
+
+    //Get MD5 of decrypted data
+    byte fileMD5[16];
+    file.read((char*) fileMD5, sizeof(fileMD5));
+
+    //Read all data
+    char car;
+    file.read(&car, sizeof(car));
+
+    while(file){
+        this->data+=car,
+        file.read(&car, sizeof(car));
+
+    }
+
+    //Decrypt data
+    this->data=this->aes.decrypt(key, this->data);
+
+    //Get current MD5 of decrypted data
+    byte currentMD5[16];
+    this->hash.getMD5_128(this->data, currentMD5, sizeof(currentMD5));
+
+    //Compare the 2 MD5 to find if file is fully decrypted
+    if(this->hash.compareDigest(fileMD5, currentMD5, sizeof(currentMD5))){
+        //Set readable
+        this->readable=true;
+        //Save the key
+        this->hash.getSHA_256(key, this->key, 32);
+    }
+    else{
+        this->readable=false;
+    }
+
+    //Close file
+    file.close();
+
+
+}
+
+
+
+//Write file with key
+void FileManIOFile::write(std::string key,std::string data){
+
+    std::string dataEncrypted;
+
+    dataEncrypted=this->aes.encrypt(key, data);
+
+    this->writeRoutine(data, dataEncrypted);
+
+
+}
+
+//Write file without key
+void FileManIOFile::write(std::string data){
+    if(not(this->readable)){
+        std::cout << "Can't write data without key (read it before) !" << std::endl;
+        std::exit(EXIT_FAILURE);
+    }
+
+    std::string dataEncrypted;
+
+    dataEncrypted=this->aes.encrypt(this->key, data);
+    this->writeRoutine(data, dataEncrypted);
+
+
+}
+
+
+
+//Get readable attribute
+bool FileManIOFile::isReadable(){
+    return this->readable;
+}
+
+
+
+//Write file
+void FileManIOFile::writeRoutine(std::string data, std::string dataEncrypted){
+
+    //Save MD5 of decrypted data
+    byte digest[16];
+    this->hash.getMD5_128(data, digest, sizeof(digest));
+
+    //Create file instance
+    std::ofstream file;
+
+    //Open it
+    file.open(this->filename, std::ios::out | std::ios::binary);
+
+    //Write MD5 on 16 first bytes
+    file.write((char *) digest,sizeof(digest));
+
+    //Write data
+    file.write(dataEncrypted.c_str(), dataEncrypted.size());
+
+    //Close file
+    file.close();
+
+    //Save data to attribute
+    this->data=data;
+}
+
+
+
+//Get data
+std::string FileManIOFile::getData(){
+    return this->data;
+}
diff --git a/src/IOFileClass/FileManIOFile.hpp b/src/IOFileClass/FileManIOFile.hpp
new file mode 100644
index 0000000..221cf13
--- /dev/null
+++ b/src/IOFileClass/FileManIOFile.hpp
@@ -0,0 +1,133 @@
+/**
+ * @file FileManIOFile.hpp
+ * @brief FileManIOFile class definitions
+ * @author manzerbredes
+ * @date 9 Mars 2015
+ *
+ * Contain all definitions of FileManIOFile class.
+ *
+ */
+
+
+#ifndef __FileManIOFile__
+#define __FileManIOFile__
+
+
+//----- std -----
+#include <iostream>
+#include <string>
+#include <fstream>
+
+
+//----- class -----
+#include "HASHCrypt.hpp"
+#include "AESCrypt.hpp"
+
+
+
+
+/**
+ * @class FileManIOFile FileManIOFile.hpp "/CryptClass/FileManIOFile.hpp"
+ * @brief Class for quick open and close encrypted files.
+ * @author manzerbredes
+ *
+ * -----File organisation-----
+ *
+ * 16 first bytes : md5 of decrypted data
+ * Rest of the file : data encrypted (ASE for now)
+ *
+ * \bug Need check if file exist and can be opened
+ */
+class FileManIOFile {
+
+    public:
+
+        //Constructor
+        FileManIOFile(std::string filename);
+
+        //Destructor
+        ~FileManIOFile();
+
+
+        /**
+        * @brief Read encrypted file.
+        *
+        * @param key : key to encrypt data
+        *
+        * Read data from "filename" attribute.
+        * If file fully decrypted, readable var switch to true,
+        * and key saved in key attribute (before been crypted with SHA-256 algorithm).
+        *
+        */
+        void read(std::string key);
+
+
+        /**
+        * @brief Write data in encrypted file.
+        *
+        * @param key : key to encrypt data
+        * @param data : data to write
+        *
+        * Write the file with or without key.
+        * To write data without key, you need to read it before (to save the key
+        * in attribute key).
+        *
+        */
+        void write(std::string key, std::string data);
+        void write(std::string data);
+
+
+        /**
+        * @brief True if file fully decrypted.
+        *
+        * @return readable attribute
+        *
+        * Return "readable" attribute.
+        *
+        */
+        bool isReadable();
+
+
+        /**
+        * @brief Get data attribute.
+        *
+        * @return data attribute.
+        *
+        * **Warning** if data not fully decrypted (readable!=true),
+        * data will be unreadable (unparsable).
+        *
+        */
+        std::string getData();
+
+
+    private:
+
+        /**
+        * @brief Write data in encrypted file.
+        *
+        * @param data : data to write (for MD5)
+        * @param dataEncrypted : data to write
+        *
+        * Write encryptedData to filename
+        *
+        */
+        void writeRoutine(std::string data, std::string dataEncrypted);
+
+
+        //Attributes:
+
+        AESCrypt aes; ///< AES instance
+
+        HASHCrypt hash; ///< HASH instance
+
+        std::string filename; ///< Filename attribute
+
+        std::string data; ///< Data attribute
+
+        bool readable; ///< Readable attribute
+
+        byte key[32]; ///< Key in SHA-256
+
+};
+
+#endif