71 lines
1.8 KiB
C#
71 lines
1.8 KiB
C#
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
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#pragma warning disable
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#if !(NETCF_1_0 || PORTABLE || NETFX_CORE)
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using System;
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using System.Security.Cryptography;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Prng
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{
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/// <summary>
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/// Uses RandomNumberGenerator.Create() to get randomness generator
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/// </summary>
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public class CryptoApiRandomGenerator
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: IRandomGenerator
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{
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private readonly RandomNumberGenerator rndProv;
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public CryptoApiRandomGenerator()
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: this(RandomNumberGenerator.Create())
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{
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}
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public CryptoApiRandomGenerator(RandomNumberGenerator rng)
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{
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this.rndProv = rng;
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}
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#region IRandomGenerator Members
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public virtual void AddSeedMaterial(byte[] seed)
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{
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// We don't care about the seed
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}
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public virtual void AddSeedMaterial(long seed)
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{
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// We don't care about the seed
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}
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public virtual void NextBytes(byte[] bytes)
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{
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rndProv.GetBytes(bytes);
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}
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public virtual void NextBytes(byte[] bytes, int start, int len)
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{
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if (start < 0)
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throw new ArgumentException("Start offset cannot be negative", "start");
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if (bytes.Length < (start + len))
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throw new ArgumentException("Byte array too small for requested offset and length");
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if (bytes.Length == len && start == 0)
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{
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NextBytes(bytes);
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}
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else
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{
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byte[] tmpBuf = new byte[len];
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NextBytes(tmpBuf);
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Array.Copy(tmpBuf, 0, bytes, start, len);
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}
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}
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#endregion
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}
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}
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#endif
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#pragma warning restore
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#endif
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