static void Main(string[] args)
{
/*AesCryptoServiceProvider aes = new AesCryptoServiceProvider();
* ICryptoTransform encryptor = aes.CreateEncryptor();
* MemoryStream ms = new MemoryStream();
* CryptoStream cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write);
*
* cs.Dispose();
*
* try
* {
* ms.Write(new byte[] { 0, 0, 0, 0 }, 0, 4);
* }
* catch (Exception e)
* {
* Console.WriteLine($"1. {e.Message}");
* }
*
* try
* {
* encryptor.TransformFinalBlock(new byte[] { 0, 0, 0, 0 }, 0, 4);
* }
* catch (Exception e)
* {
* Console.WriteLine($"2. {e.Message}");
* }
*
* try
* {
* aes.CreateDecryptor();
* }
* catch (Exception e)
* {
* Console.WriteLine($"3. {e.Message}");
* }*/
byte[] buffer = new byte[81920];
byte[] decrypted;
DateTime printed = DateTime.Now;
TimeSpan printSpan = new TimeSpan(0, 0, 1);
int read;
using (FileStream sStream = File.OpenRead(SEND_PATH))
using (FileStream rStream = File.Create(RECEIVE_PATH))
using (AESManager aes1 = new AESManager())
using (AESManager aes2 = new AESManager(aes1.KeyIVPair))
{
while (sStream.Position != sStream.Length)
{
read = sStream.Read(buffer, 0, 81920);
decrypted = aes2.Decrypt(aes1.Encrypt(buffer));
rStream.Write(decrypted, 0, read);
if (DateTime.Now - printed > printSpan)
{
Console.WriteLine($"{sStream.Position}/{sStream.Length} ({(double)sStream.Position / (double)sStream.Length}) 완료...");
printed = DateTime.Now;
}
}
}
Console.WriteLine("파일이 손상없이 암/복호화되었는지 확인합니다...");
FileInfo sent = new FileInfo(SEND_PATH);
FileInfo received = new FileInfo(RECEIVE_PATH);
if (sent.Length != received.Length)
{
Console.WriteLine($"파일의 길이가 다릅니다. (전송한 파일 : {sent.Length}, 받은 파일 : {received.Length})");
return;
}
byte[] sBuffer = new byte[81920], rBuffer = new byte[81920];
try
{
using (FileStream sStream = sent.OpenRead())
using (FileStream rStream = received.OpenRead())
{
while (sStream.Position != sStream.Length)
{
sStream.Read(sBuffer, 0, 81920);
read = rStream.Read(rBuffer, 0, 81920);
for (int i = 0; i < read; ++i)
{
if (sBuffer[i] != rBuffer[i])
{
throw new Exception($"{(sStream.Position - read + i)}에서 ({sStream.Position - 81920} ~ {sStream.Position}) 불일치를 발견하였습니다. (전체 길이 {sent.Length})");
}
}
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return;
}
Console.WriteLine("파일이 일치합니다.");
Console.ReadKey(false);
}