public static PasswordRepository Read(
string repositoryFile,
string keyDirectory,
SecureString securePassword,
bool oldFormat)
{
var repository = new PasswordRepository();
using (var rijAlg = new RijndaelManaged())
{
using (var ms = new MemoryStream())
{
ICryptoTransform cryptoTransform;
using (var fs = new FileStream(repositoryFile, FileMode.Open))
{
// read header part of the file
repository.Id = ReadId(fs);
// read encrypted key and vector for the ID
var iv = ReadSecret(keyDirectory, repository.Id, SecretType.IV);
if (oldFormat)
{
var key = Read($"{keyDirectory}\\{repository.Id}.kv");
Mix(key, securePassword);
rijAlg.Key = key;
}
else
{
var encryptedKey = ReadSecret(keyDirectory, repository.Id, SecretType.Key);
rijAlg.Key = TransformKey(encryptedKey, iv, securePassword, TransformType.Decrypt);
}
rijAlg.IV = iv;
cryptoTransform = rijAlg.CreateDecryptor();
// decrypt XML part of the file
Decrypt(cryptoTransform, fs, ms);
}
var xmldoc = new XmlDocument();
xmldoc.LoadXml(Encoding.UTF8.GetString(ms.ToArray()));
var rootElem = xmldoc.DocumentElement;
repository.Name = rootElem["Name"].InnerText;
repository.Description = rootElem["Description"].InnerText;
repository.Version = new Version(rootElem["Version"].InnerText);
var entriesElem = rootElem["Passwords"];
if (entriesElem.HasChildNodes)
{
foreach (XmlNode node in entriesElem.ChildNodes)
{
if (node.Name == "Password")
{
var passwordElem = node as XmlElement;
var pwd = new Password()
{
Name = passwordElem["Name"].InnerText,
Description = passwordElem["Description"].InnerText,
Url = passwordElem["Url"].InnerText
};
if (repository.Version > FILE_FORMAT_050)
{
pwd.Id = passwordElem["Id"].InnerText;
}
// decrypt login and password
var cipherLogin = Convert.FromBase64String(passwordElem["CipherLogin"].InnerText);
pwd.Login = Decrypt(cryptoTransform, cipherLogin);
var cipherPwd = Convert.FromBase64String(passwordElem["CipherPassword"].InnerText);
foreach (var c in Decrypt(cryptoTransform, cipherPwd))
{
pwd.SecurePassword.AppendChar(c);
}
Array.Clear(cipherPwd, 0, cipherPwd.Length);
pwd.SecurePassword.MakeReadOnly();
repository.passwordDict[pwd.Id] = pwd;
}
}
}
}
}
repository.Changed = false;
return(repository);
}
public static PasswordRepository Read(
string repositoryFile,
string keyDirectory,
SecureString securePassword,
bool oldFormat)
{
//Представляет базовый класс, от которого должны наследоваться все реализации алгоритма симметричного шифрования Rijndael .
var repository = new PasswordRepository();
using (var rijAlg = new RijndaelManaged())
{
using (var ms = new MemoryStream())
{
ICryptoTransform cryptoTransform;
using (var fs = new FileStream(repositoryFile, FileMode.Open))
{
// прочитать header part файла
repository.Id = ReadId(fs);
// прочитать зашифрованный ключ и IV для ID
var iv = ReadSecret(keyDirectory, repository.Id, SecretType.IV);
if (oldFormat)
{
var key = Read($"{keyDirectory}\\{repository.Id}.kv");
Mix(key, securePassword);
rijAlg.Key = key;
}
else
{
var encryptedKey = ReadSecret(keyDirectory, repository.Id, SecretType.Key);
rijAlg.Key = TransformKey(encryptedKey, iv, securePassword, TransformType.Decrypt);
}
rijAlg.IV = iv;
cryptoTransform = rijAlg.CreateDecryptor();
// расшифровка XML
Decrypt(cryptoTransform, fs, ms);
}
var xmldoc = new XmlDocument();
xmldoc.LoadXml(Encoding.UTF8.GetString(ms.ToArray()));
var rootElem = xmldoc.DocumentElement;
repository.Name = rootElem["Name"].InnerText;
repository.Description = rootElem["Description"].InnerText;
repository.Version = new Version(rootElem["Version"].InnerText);
var entriesElem = rootElem["Passwords"];
if (entriesElem.HasChildNodes)
{
foreach (XmlNode node in entriesElem.ChildNodes)
{
if (node.Name == "Password")
{
var passwordElem = node as XmlElement;
var pwd = new Password()
{
Name = passwordElem["Name"].InnerText,
Description = passwordElem["Description"].InnerText,
};
if (repository.Version > FILE_FORMAT_050)
{
pwd.Id = passwordElem["Id"].InnerText;
}
// расшифровать логин и пароль
var cipherLogin = Convert.FromBase64String(passwordElem["CipherLogin"].InnerText);
pwd.Login = Decrypt(cryptoTransform, cipherLogin);
var cipherPwd = Convert.FromBase64String(passwordElem["CipherPassword"].InnerText);
foreach (var c in Decrypt(cryptoTransform, cipherPwd))
{
pwd.SecurePassword.AppendChar(c);
}
Array.Clear(cipherPwd, 0, cipherPwd.Length);
pwd.SecurePassword.MakeReadOnly();
repository.passwordDict[pwd.Id] = pwd;
}
}
}
}
}
repository.Changed = false;
return(repository);
}