如何在 C# 中生成加密安全的伪随机数？
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How can I generate a cryptographically secure pseudorandom number in C#?
提问by Alon Gubkin
Is there any fast implementation of cryptographically secure pseudorandom number generator(CSPRNG) for C# 3.0 (.NET Framework 3.5), for authentication tokens?
C# 3.0 (.NET Framework 3.5)的加密安全伪随机数生成器(CSPRNG)是否有任何快速实现，用于身份验证令牌？
采纳答案by John Gietzen
using System.Security.Cryptography;
...
using(RandomNumberGenerator rng = new RNGCryptoServiceProvider())
{
byte[] tokenData = new byte[32];
rng.GetBytes(tokenData);
string token = Convert.ToBase64String(tokenData);
}
回答by stuartd
The RNGCryptoServiceProviderclass
回答by Guffa
That depends on what you mean by fast...
这取决于你所说的快速是什么意思......
There is no really fast secure random generator. If you want fast, you should use the regular Random class. If you want secure you should use the random generator in the Cryptography namespace, but that is significantly slower. You simply can't have both.
没有真正快速安全的随机生成器。如果你想快速，你应该使用常规的 Random 类。如果你想要安全，你应该在 Cryptography 命名空间中使用随机生成器，但那会慢得多。你不能两者兼得。
