Created
February 28, 2013 23:41
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| using System; | |
| using System.Collections.Generic; | |
| using System.Linq; | |
| using System.Text; | |
| using System.Security.Cryptography; | |
| namespace Octgn.Utils | |
| { | |
| class CryptoRNG | |
| { | |
| RNGCryptoServiceProvider rnd; | |
| Byte[] randomBytes = new Byte[4]; | |
| public CryptoRNG() | |
| { | |
| rnd = new RNGCryptoServiceProvider(); | |
| } | |
| public UInt32 Next() | |
| { | |
| rnd.GetBytes(randomBytes); | |
| return BitConverter.ToUInt32(randomBytes, 0); | |
| } | |
| public int Next(int maxValue) | |
| { | |
| return this.Next(0, maxValue); | |
| } | |
| public int Next(int minValue, int maxValue) | |
| { | |
| if (minValue > maxValue) throw new ArgumentOutOfRangeException(); | |
| if (minValue == maxValue) return minValue; | |
| int diff = maxValue - minValue; | |
| double percent = this.NextDouble(); | |
| return (int) (percent * diff + minValue); | |
| } | |
| public double NextDouble() | |
| { | |
| return this.Next() / ((double)(UInt32.MaxValue) + 1); | |
| } | |
| } | |
| } |
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