public static void Encrypt(byte[] source)
{
if (!GetPublicKey())
{
return;
}
StringBuilder bits = new StringBuilder(source.ToBitsString());
StringBuilder result = new StringBuilder();
int rsaBlockSize = blockSize;
int addBitsCount = rsaBlockSize - (bits.Length % rsaBlockSize);
bits.Append(Extensions.GetRandomString(addBitsCount));
string add = Convert.ToString(addBitsCount, 2);
bits.Append(add.PadLeftRandom(blockSize));
for (int i = 0; i < bits.Length; i += rsaBlockSize)
{
string blockMessage = bits.ToString(i, rsaBlockSize);
result.Append(EncryptBlock(blockMessage));
}
byte[] encrypted = result.ToString().ToBytes().ToArray();
CustomFile.WriteAllBytes(encrypted, "C:\\Users\\vlady\\Desktop\\result.txt");
}
public static void Decrypt(byte[] source)
{
if (source.Length <= TRASH_BLOCK)
{
ShowErrorMessage();
return;
}
if (!GetPrivateKey())
{
return;
}
StringBuilder result = new StringBuilder();
int rsaBlockSize = Generate.KEY_LENGT_BITS;
StringBuilder bits = new StringBuilder(source.ToBitsString());
if (bits.Length % rsaBlockSize != 0)
{
ShowErrorMessage();
return;
}
for (int i = 0; i < bits.Length; i += rsaBlockSize)
{
string blockMessage = bits.ToString(i, rsaBlockSize);
result.Append(DecryptBlock(blockMessage));
}
int tempSize = (int)(result.ToString().Substring(result.Length - 16).ToBigInteger());
int addBitsCount = tempSize + blockSize;
string resultString = result.ToString().Substring(0, result.Length - addBitsCount);
CustomFile.WriteAllBytes(resultString.ToBytes());
}