public async Task WriteReadData()
{
const string fileName = "hello.txt";
Random rand = new Random(156);
byte[] data = new byte[1024 * 156];
rand.NextBytes(data);
IRsaCryptoAccessor p12CryptoAccessor = this.CreateAccesor();
using MemoryStream writeMs = new MemoryStream();
using (ContainerWriter writer = new ContainerWriter(writeMs, fileName, await p12CryptoAccessor.ExtractPublicCertificate()))
{
await writer.Write(data, 0, data.Length);
}
using MemoryStream readMs = new MemoryStream(writeMs.ToArray());
using (ContainerReader reader = new ContainerReader(readMs, p12CryptoAccessor))
{
string decodedFileName = await reader.ReadFileName();
Assert.AreEqual(fileName, decodedFileName, "Decoded file name");
using Stream contentStream = await reader.GetContentStream();
using MemoryStream buffer = new MemoryStream(data.Length + 10);
await contentStream.CopyToAsync(buffer);
byte[] decryptedData = buffer.ToArray();
Assert.AreEqual(data.Length, decryptedData.Length);
CollectionAssert.AreEquivalent(data, decryptedData);
}
}
public ContainerReader(Stream readStream, IRsaCryptoAccessor cryptoAccessor)
{
if (readStream == null)
{
throw new ArgumentNullException(nameof(readStream));
}
if (cryptoAccessor == null)
{
throw new ArgumentNullException(nameof(cryptoAccessor));
}
this.readerStream = readStream;
this.cryptoAccessor = cryptoAccessor;
this.fileName = null;
this.aes = new AesManaged();
this.aes.Mode = CipherMode.CBC;
this.aes.Padding = PaddingMode.PKCS7;
this.aes.KeySize = 256;
this.aes.BlockSize = 128;
}
