public bool encryptrsa(string source, string destination, string key_friend)
{
RSA encryptor = new RSA();
RSA friendEncryptor = new RSA();
if (key_friend.Equals(""))
{
encryptor.SetPubKey(user_public_key);
}
else
{
encryptor.SetPubKey(user_private_key);
friendEncryptor.SetPubKey(key_friend);
}
inputHasher = new hasher();
outputHasher = new hasher();
FileInfo info = new FileInfo(source);
input = new FileIO(source);
output = new FileIO(destination);
output.Open_Writer();
output.Write_line(info.Name);
output.Write_line("CODE:");
int count;
byte[] hulp;
input.OpenRead();
while ((count = input.Read_part()) > 0)
{
inputHasher.Add_part(input.buffer);
hulp = encryptor.run_encrypt(input.buffer);
if (!key_friend.Equals(""))
{
//hulp = friendEncryptor.run_encrypt(hulp);
outputHasher.Add_part(hulp);
}
output.Write_line(hulp);
}
input.close_file();
writeEnd();
output.Writer_close();
return(true);
}
public void Add_user(string name, string password)
{
hashing = new hasher();
password = hashing.Hash_met_salt(Transformer.GetByteValue(password));
RSA rsaencryptor = new RSA();
rsaencryptor.generateNewKeyPair();
bestand.Add_User(name, password, rsaencryptor.privKey, rsaencryptor.pubKey);
}
public bool encryptSym(string source, string destination)
{
AesEncryptie symEncryptor = new AesEncryptie();
inputHasher = new hasher();
outputHasher = new hasher();
FileInfo info = new FileInfo(source);
input = new FileIO(source);
output = new FileIO(destination);
try {
writeBegin(info.Name, program_encryptor.run_encrypt(symEncryptor.KEY), program_encryptor.run_encrypt(symEncryptor.IV));
}
catch (FileNotFoundException ex)
{
throw new Exceptions("File not found:" + ex.FileName, "Encryptie");
}
catch (FileLoadException ex)
{
throw new Exceptions("Geen toegangsrechten:" + ex.FileName, "Encryptie");
}
int count;
byte[] hulp;
input.OpenRead();
while ((count = input.Read_part()) > 0)
{
inputHasher.Add_part(input.buffer);
hulp = symEncryptor.encrypt(input.buffer);
outputHasher.Add_part(hulp);
output.Write_line(hulp);
}
symEncryptor.end_encryption();
input.close_file();
writeEnd();
output.Writer_close();
return(true);
}
public bool checkLogin(string naam, string wachtwoord)
{
hashing = new hasher();
List <string> userValues = get_user(naam);
if (userValues == null)
{
return(false);
}
if (!hashing.check_hash(Transformer.GetByteValue(wachtwoord), userValues[0]))
{
return(false);
}
username = naam;
user_private_key = userValues[1];
user_public_key = userValues[2];
return(true);
}
public bool decryptrsa(string source, string destination, string key_friend)
{
RSA encryptor = new RSA();
RSA friendEncryptor = new RSA();
encryptor.SetPrivKey(user_private_key);
if (!key_friend.Equals(""))
{
friendEncryptor.SetPrivKey(key_friend);
}
inputHasher = new hasher();
outputHasher = new hasher();
input = new FileIO(source);
input.Open_Reader();
string filename = input.read_till("CODE:");
FileInfo info = new FileInfo(filename);
FileInfo infoDestination = new FileInfo(destination);
if (!infoDestination.Extension.Equals(info.Extension))
{
output = new FileIO(destination, info.Extension);
}
else
{
output = new FileIO(destination);
}
byte[] hulp;
output.OpenWrite();
while (input.readCode() > 0)
{
inputHasher.Add_part(input.buffer);
if (!key_friend.Equals(""))
{
hulp = friendEncryptor.run_decrypt(input.buffer);
hulp = encryptor.run_decrypt(hulp);
}
else
{
hulp = encryptor.run_decrypt(input.buffer);
}
outputHasher.Add_part(hulp);
output.Write_part(hulp);
}
Check_Hashes();
output.close_file();
return(true);
}
public bool decryptSym(string source, string destination)
{
AesEncryptie symEncryptor;
inputHasher = new hasher();
outputHasher = new hasher();
string filename = "";
byte[] key = new byte[0];
byte[] IV = new byte[0];
input = new FileIO(source);
try
{
ReadBegin(ref filename, ref key, ref IV);
}
catch (Exceptions ex)
{
throw new Exceptions("Wegschrijven lukte niet:" + ex.Message, "Decryptie");
}
try
{
FileInfo info = new FileInfo(filename);
FileInfo infoDestination = new FileInfo(destination);
if (!infoDestination.Extension.Equals(info.Extension))
{
output = new FileIO(destination, info.Extension);
}
else
{
output = new FileIO(destination);
}
symEncryptor = new AesEncryptie(program_encryptor.run_decrypt(IV), program_encryptor.run_decrypt(key));
byte[] hulp;
output.OpenWrite();
while (input.readCode() > 0)
{
inputHasher.Add_part(input.buffer);
hulp = symEncryptor.encrypt(input.buffer);
outputHasher.Add_part(hulp);
output.Write_part(hulp);
}
symEncryptor.end_encryption();
Check_Hashes();
}
catch (Exceptions ex)
{
throw new Exceptions("Er is geknoeit met de input files:" + ex.Message, "Decryptie");
}
output.close_file();
return(true);
}
