private static RsaSecurityKey Create()
{
RsaSecurityKey key;
var rsa = RSA.Create();
if (rsa is RSACryptoServiceProvider)
{
rsa.Dispose();
using (var cng = new RSACng(2048))
{
var parameters = cng.ExportParameters(includePrivateParameters: true);
key = new RsaSecurityKey(parameters);
}
}
else
{
rsa.KeySize = 2048;
key = new RsaSecurityKey(rsa);
}
var buffer = RandomUtility.GenerateByteArray(16);
key.KeyId = buffer.AsBase64String();
return(key);
}
/// <summary>
/// 生成标识核心。
/// </summary>
/// <param name="timestampBytes">给定的时间戳字节数组。</param>
/// <returns>返回 <see cref="Guid"/>。</returns>
protected virtual Guid GenerateIdCore(byte[] timestampBytes)
{
return(ExtensionSettings.Preference.RunLocker(() =>
{
var randomBytes = RandomUtility.GenerateByteArray(10);
var guidBytes = new byte[16];
switch (Generation)
{
case CombIdentificationGeneration.AsString:
case CombIdentificationGeneration.AsBinary:
Buffer.BlockCopy(timestampBytes, 2, guidBytes, 0, 6);
Buffer.BlockCopy(randomBytes, 0, guidBytes, 6, 10);
// If formatting as a string, we have to reverse the order
// of the Data1 and Data2 blocks on little-endian systems.
if (Generation == CombIdentificationGeneration.AsString && BitConverter.IsLittleEndian)
{
Array.Reverse(guidBytes, 0, 4);
Array.Reverse(guidBytes, 4, 2);
}
break;
case CombIdentificationGeneration.AtEnd:
Buffer.BlockCopy(randomBytes, 0, guidBytes, 0, 10);
Buffer.BlockCopy(timestampBytes, 2, guidBytes, 10, 6);
break;
}
return new Guid(guidBytes);
}));
}
public void GenerateByteArrayTest()
{
var buffer = RandomUtility.GenerateByteArray(16);
Assert.NotEmpty(buffer);
var g = new Guid(buffer);
Assert.NotEmpty(g.ToString());
}
private Task <string> GenerateTokenAsync(string idTraceName, CancellationToken cancellationToken)
{
return(cancellationToken.RunOrCancelAsync(() =>
{
var buffer = RandomUtility.GenerateByteArray(32);
var token = buffer.AsBase64String();
Logger.LogTrace($"Generate {idTraceName}: {token}");
return token;
}));
}
