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Is there any fast implementation of cryptographically secure pseudorandom number generator (CSPRNG) for C# 3.0 (.NET Framework 3.5), for authentication tokens?
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A secure block cipher can be converted into a CSPRNG by running it in counter mode. This is done by choosing a random key and encrypting a 0, then encrypting a 1, then encrypting a 2, etc. The counter can also be started at an arbitrary number other than zero.
The secrets module is used for generating cryptographically strong random numbers suitable for managing data such as passwords, account authentication, security tokens, and related secrets.
A PRNG is said to be cryptographically secure if, assuming that it operates over a wide enough unknown n-bit key, its output is computationally indistinguishable from uniformly random bits.
The seed() function will seed the pseudorandom number generator, taking an integer value as an argument, such as 1 or 7.
using System.Security.Cryptography; ... using(RandomNumberGenerator rng = new RNGCryptoServiceProvider()) { byte[] tokenData = new byte[32]; rng.GetBytes(tokenData); string token = Convert.ToBase64String(tokenData); } If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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