/// <exception cref="ArgumentNullException">any argument is null</exception>
/// <exception cref="ArgumentException">sourceFileName is empty or destinationFileName is empty</exception>
/// <exception cref="SourceFileNotFoundException">Исходный файл не найден.</exception>
/// <exception cref="UnauthorizedAccessSourceFileException">Ошибка при доступе к исходному файлу.</exception>
/// <exception cref="DestinationFileException">Ошибка при сохранении зашифрованного файла.</exception>
public void Cipher(PublicKey key, string sourceFileName, string destinationFileName)
{
Status = ProcessStatus.Processing;
CurrentBlock = 0;
try {
var rsa = new RsaCipher(key);
using (var reader = CreateFileReader(sourceFileName, key)) {
TotalBlocks = Convert.ToInt32(Math.Ceiling((double)reader.Length / (key.N.Digit - 1)));
using (var writter = factory.CreateRsaFileWriter(destinationFileName, (short)key.N.Digit)) {
writter.WriteHeader(reader.Length, reader.HashCode);
while (!reader.IsDone && Status != ProcessStatus.Stopped)
{
var number = reader.ReadNextBlock();
writter.WriteNextBlock(rsa.Cipher(number));
++CurrentBlock;
OnBlockCompleted();
}
}
}
} catch (Exception) {
Status = ProcessStatus.Stopped;
throw;
}
if (Status == ProcessStatus.Processing)
{
Status = ProcessStatus.Complete;
}
}
public void Cipher3()
{
// p = 17
// q = 23
// n = p * q = 391
// e = 3
var data = BigNumber.FromBytes(new[] { 14, 1 });
var n = BigNumber.FromBytes(new[] { 135, 1 });
var e = BigNumber.FromBytes(new[] { 3 });
var key = new PublicKey(e, n);
var rsa = new RsaCipher(key);
var result = rsa.Cipher(data);
CheckNumber(result, 60);
}