本文整理汇总了C#中CryptoStream.WriteAsync方法的典型用法代码示例。如果您正苦于以下问题：C# CryptoStream.WriteAsync方法的具体用法？C# CryptoStream.WriteAsync怎么用？C# CryptoStream.WriteAsync使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CryptoStream的用法示例。
在下文中一共展示了CryptoStream.WriteAsync方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Roundtrip
public static void Roundtrip(int inputBlockSize, int outputBlockSize, bool canTransformMultipleBlocks)
{
ICryptoTransform encryptor = new IdentityTransform(inputBlockSize, outputBlockSize, canTransformMultipleBlocks);
ICryptoTransform decryptor = new IdentityTransform(inputBlockSize, outputBlockSize, canTransformMultipleBlocks);
var stream = new MemoryStream();
using (CryptoStream encryptStream = new CryptoStream(stream, encryptor, CryptoStreamMode.Write))
{
Assert.True(encryptStream.CanWrite);
Assert.False(encryptStream.CanRead);
Assert.False(encryptStream.CanSeek);
Assert.False(encryptStream.HasFlushedFinalBlock);
Assert.Throws<NotSupportedException>(() => encryptStream.SetLength(1));
Assert.Throws<NotSupportedException>(() => encryptStream.Length);
Assert.Throws<NotSupportedException>(() => encryptStream.Position);
Assert.Throws<NotSupportedException>(() => encryptStream.Position = 0);
Assert.Throws<NotSupportedException>(() => encryptStream.Seek(0, SeekOrigin.Begin));
Assert.Throws<NotSupportedException>(() => encryptStream.Read(new byte[0], 0, 0));
Assert.Throws<NullReferenceException>(() => encryptStream.Write(null, 0, 0)); // No arg validation on buffer?
Assert.Throws<ArgumentOutOfRangeException>(() => encryptStream.Write(new byte[0], -1, 0));
Assert.Throws<ArgumentOutOfRangeException>(() => encryptStream.Write(new byte[0], 0, -1));
Assert.Throws<ArgumentOutOfRangeException>(() => encryptStream.Write(new byte[0], 0, -1));
Assert.Throws<ArgumentException>(() => encryptStream.Write(new byte[3], 1, 4));
byte[] toWrite = Encoding.UTF8.GetBytes(LoremText);
// Write it all at once
encryptStream.Write(toWrite, 0, toWrite.Length);
Assert.False(encryptStream.HasFlushedFinalBlock);
// Write in chunks
encryptStream.Write(toWrite, 0, toWrite.Length / 2);
encryptStream.Write(toWrite, toWrite.Length / 2, toWrite.Length - (toWrite.Length / 2));
Assert.False(encryptStream.HasFlushedFinalBlock);
// Write one byte at a time
for (int i = 0; i < toWrite.Length; i++)
{
encryptStream.WriteByte(toWrite[i]);
}
Assert.False(encryptStream.HasFlushedFinalBlock);
// Write async
encryptStream.WriteAsync(toWrite, 0, toWrite.Length).GetAwaiter().GetResult();
Assert.False(encryptStream.HasFlushedFinalBlock);
// Flush (nops)
encryptStream.Flush();
encryptStream.FlushAsync().GetAwaiter().GetResult();
encryptStream.FlushFinalBlock();
Assert.Throws<NotSupportedException>(() => encryptStream.FlushFinalBlock());
Assert.True(encryptStream.HasFlushedFinalBlock);
Assert.True(stream.Length > 0);
}
// Read/decrypt using Read
stream = new MemoryStream(stream.ToArray()); // CryptoStream.Dispose disposes the stream
using (CryptoStream decryptStream = new CryptoStream(stream, decryptor, CryptoStreamMode.Read))
{
Assert.False(decryptStream.CanWrite);
Assert.True(decryptStream.CanRead);
Assert.False(decryptStream.CanSeek);
Assert.False(decryptStream.HasFlushedFinalBlock);
Assert.Throws<NotSupportedException>(() => decryptStream.SetLength(1));
Assert.Throws<NotSupportedException>(() => decryptStream.Length);
Assert.Throws<NotSupportedException>(() => decryptStream.Position);
Assert.Throws<NotSupportedException>(() => decryptStream.Position = 0);
Assert.Throws<NotSupportedException>(() => decryptStream.Seek(0, SeekOrigin.Begin));
Assert.Throws<NotSupportedException>(() => decryptStream.Write(new byte[0], 0, 0));
Assert.Throws<NullReferenceException>(() => decryptStream.Read(null, 0, 0)); // No arg validation on buffer?
Assert.Throws<ArgumentOutOfRangeException>(() => decryptStream.Read(new byte[0], -1, 0));
Assert.Throws<ArgumentOutOfRangeException>(() => decryptStream.Read(new byte[0], 0, -1));
Assert.Throws<ArgumentOutOfRangeException>(() => decryptStream.Read(new byte[0], 0, -1));
Assert.Throws<ArgumentException>(() => decryptStream.Read(new byte[3], 1, 4));
using (StreamReader reader = new StreamReader(decryptStream))
{
Assert.Equal(
LoremText + LoremText + LoremText + LoremText,
reader.ReadToEnd());
}
}
// Read/decrypt using ReadToEnd
stream = new MemoryStream(stream.ToArray()); // CryptoStream.Dispose disposes the stream
using (CryptoStream decryptStream = new CryptoStream(stream, decryptor, CryptoStreamMode.Read))
using (StreamReader reader = new StreamReader(decryptStream))
{
Assert.Equal(
LoremText + LoremText + LoremText + LoremText,
reader.ReadToEndAsync().GetAwaiter().GetResult());
}
// Read/decrypt using a small buffer to force multiple calls to Read
stream = new MemoryStream(stream.ToArray()); // CryptoStream.Dispose disposes the stream
using (CryptoStream decryptStream = new CryptoStream(stream, decryptor, CryptoStreamMode.Read))
using (StreamReader reader = new StreamReader(decryptStream, Encoding.UTF8, true, bufferSize: 10))
{
//.........这里部分代码省略.........
示例2: FlushAsync
public static void FlushAsync()
{
ICryptoTransform encryptor = new IdentityTransform(1, 1, true);
using (MemoryStream output = new MemoryStream())
using (CryptoStream encryptStream = new CryptoStream(output, encryptor, CryptoStreamMode.Write))
{
encryptStream.WriteAsync(new byte[] { 1, 2, 3, 4, 5 }, 0, 5);
Task waitable = encryptStream.FlushAsync(new Threading.CancellationToken(false));
Assert.False(waitable.IsCanceled);
encryptStream.WriteAsync(new byte[] { 1, 2, 3, 4, 5 }, 0, 5);
waitable = encryptStream.FlushAsync(new Threading.CancellationToken(true));
Assert.True(waitable.IsCanceled);
}
}