public static void Encrypt(ImageViewModel image, string OutFilePath, string password)
{
int len;
byte[] buffer = new byte[4096];
string originalImagePath = image.AbsoluteMasterPath;
using (FileStream outfs = new FileStream(OutFilePath, FileMode.Create, FileAccess.Write))
{
using (AesManaged aes = new AesManaged())
{
aes.BlockSize = 128;
aes.KeySize = 128;
aes.Mode = CipherMode.CBC;
aes.Padding = PaddingMode.PKCS7;
Rfc2898DeriveBytes deriveBytes = new Rfc2898DeriveBytes(password, 16);
byte[] salt = new byte[16];
salt = deriveBytes.Salt;
byte[] bufferKey = deriveBytes.GetBytes(16);
aes.Key = bufferKey;
aes.GenerateIV();
ICryptoTransform encryptor = aes.CreateEncryptor(aes.Key, aes.IV);
using (CryptoStream cse = new CryptoStream(outfs, encryptor, CryptoStreamMode.Write))
{
outfs.Write(salt, 0, 16);
outfs.Write(aes.IV, 0, 16);
using (FileStream fs = new FileStream(originalImagePath, FileMode.Open, FileAccess.Read))
{
while ((len = fs.Read(buffer, 0, 4096)) > 0)
{
cse.Write(buffer, 0, len);
}
}
}
}
}
EncryptImage encryptImage = new EncryptImage();
encryptImage.ID = Guid.NewGuid();
encryptImage.TargetImageID = image.ID;
encryptImage.EncryptFilePath = OutFilePath;
EncryptImageDao dao = new EncryptImageDao();
dao.InsertOrReplace(encryptImage);
}
