public void HelixFileDecryptor_DecryptHeaderOnlyLargeFile()
{
byte[] b = new byte[50000];
System.Security.Cryptography.RandomNumberGenerator.Create().GetBytes(b);
byte[] enc;
using (MemoryStream originalContent = new MemoryStream(b, 0, b.Length))
using (MemoryStream encryptedStream = new MemoryStream())
using (var encryptor = new HelixFileEncryptor(encryptedStream, DerivedBytesProvider.FromPassword("password"), HelixFileVersion.UnitTest))
{
encryptor.WriteHeader(new FileEntry());
encryptor.WriteContent(originalContent);
encryptor.FlushFinalBlock();
enc = encryptedStream.ToArray();
Assert.IsTrue(enc.Length > 50000);
}
using (MemoryStream encryptedStream = new MemoryStream(enc, true))
using (var decryptor = new HelixFileDecryptor(encryptedStream))
{
decryptor.Initialize(DerivedBytesProvider.FromPassword("password"));
var header = decryptor.ReadHeader();
Assert.IsNotNull(header);
decryptor.Dispose();
}
}
