关于加密：如何在C＃中生成加密安全的伪随机数？

How can I generate a cryptographically secure pseudorandom number in C#?

对于认证令牌，是否有针对C_3.0(.NET Framework 3.5)的加密安全伪随机数生成器(CSPRNG)的快速实现？

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using System.Security.Cryptography;
...
using(RandomNumberGenerator rng = new RNGCryptoServiceProvider())
{
byte[] tokenData = new byte[32];
rng.GetBytes(tokenData);

string token = Convert.ToBase64String(tokenData);
}