private byte[] BuildKey(RsaKey key)
{
byte[] buffer1 = key.FirstPart.ToByteArray();
byte[] buffer2 = key.SecondPart.ToByteArray();
int sizePart = 0;
if ((Math.Log(buffer2.Length, 2) % 1) == 0)
{
sizePart = buffer2.Length;
}
else
{
sizePart = buffer2.Length + 1;
}
var beginList = new List <byte>(buffer1);
for (int i = 0; i < sizePart - buffer1.Length; i++)
{
beginList.Add(0);
}
var endList = new List <byte>(buffer2);
for (int i = 0; i < sizePart - buffer2.Length; i++)
{
endList.Add(0);
}
var result = beginList.Concat(endList);
return(result.ToArray());
}
public override void Decrypt(string inputPath, string outputPath)
{
var file = ReadFile(inputPath);
RsaKey decryptKey = RsaKeyManager.GetRsaKey(rsaKeyPath);
BigInteger _d = decryptKey.FirstPart;
BigInteger _n = decryptKey.SecondPart;
int sizePart = GetPartKeyLength(_n);
IncreaseByteArray(ref file, sizePart);
RunDecrypt(outputPath, file.Length, sizePart, ref file, _d, _n);
}
public override void Encrypt(string inputPath, string outputPath)
{
byte[] file = ReadFile(inputPath);
RsaKey encryptKey = RsaKeyManager.GetRsaKey(rsaKeyPath);
BigInteger _e = encryptKey.FirstPart;
BigInteger _n = encryptKey.SecondPart;
int sizePart = GetPartKeyLength(_n);
IncreaseByteArray(ref file, sizePart - 1);
RunEncrypt(outputPath, file.Length, sizePart, ref file, _e, _n);
}
private void WriteKey(string filePath, KeyType type)
{
RsaKey key;
using (var fStream = new FileStream(filePath, FileMode.Create))
{
BigInteger firstNumber = 0;
if ((int)type == 0)
{
key = new RsaKey(NumberE, NumberN);
}
else
{
key = new RsaKey(NumberD, NumberN);
}
var fileKay = BuildKey(key);
fStream.Write(fileKay, 0, fileKay.Length);
}
}
