public static CryptoResult ReadFile(string path, CryptoProvider provider)
{
byte[] buffer;
using (FileStream fileStream = File.OpenRead(path))
{
using (GZipStream gzipStream = new GZipStream((Stream)fileStream, CompressionMode.Decompress, false))
{
using (MemoryStream memoryStream = new MemoryStream())
{
gzipStream.CopyTo((Stream)memoryStream);
buffer = memoryStream.GetBuffer();
}
}
}
string str1 = Encoding.UTF8.GetString(buffer, 0, buffer.Length);
int length = str1.IndexOf("\n", StringComparison.Ordinal);
string str2 = str1.Substring(length + 1);
if (length == -1)
{
return(new CryptoResult(str2, false));
}
string strB = str1.Substring(0, length);
bool isValid = string.Compare(provider.GetSignature(str2, false), strB, StringComparison.Ordinal) == 0;
return(new CryptoResult(str2, isValid));
}
public static void Write(string path, string data, bool overwrite, CryptoProvider provider)
{
FileMode mode = overwrite ? FileMode.Create : FileMode.CreateNew;
string signature = provider.GetSignature(data, false);
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.Append(signature);
stringBuilder.Append('\n');
stringBuilder.Append(data);
byte[] bytes = Encoding.UTF8.GetBytes(stringBuilder.ToString());
using (FileStream fileStream = File.Open(path, mode))
{
using (GZipStream gzipStream = new GZipStream((Stream)fileStream, CompressionMode.Compress, false))
gzipStream.Write(bytes, 0, bytes.Length);
}
}
