40 lines
1.2 KiB
C#
40 lines
1.2 KiB
C#
using System;
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using System.Security.Cryptography;
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namespace SmallInjectorDemo
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{
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/// <summary>
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/// Static helper class for generating random numbers.
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/// </summary>
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public static class RandomHelper
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{
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/// <summary>
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/// Return cryptographic stable random integer.
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/// </summary>
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/// <param name="min">Lower border of result.</param>
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/// <param name="max">Upper border of result.</param>
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/// <returns>Random integer.</returns>
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public static int NewRandomInteger(int min, int max)
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{
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// The random number provider.
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using (var rand = new RNGCryptoServiceProvider())
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{
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uint scale = uint.MaxValue;
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while (scale == uint.MaxValue)
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{
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// Get four random bytes.
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var four_bytes = new byte[4];
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rand.GetBytes(four_bytes);
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// Convert that into an uint.
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scale = BitConverter.ToUInt32(four_bytes, 0);
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}
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// Add min to the scaled difference between max and min.
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return (int)(min + (max - min) *
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(scale / (double)uint.MaxValue));
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}
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}
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}
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} |