105 lines
3.0 KiB
C#
105 lines
3.0 KiB
C#
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
|
|
#pragma warning disable
|
|
using System;
|
|
|
|
using Best.HTTP.SecureProtocol.Org.BouncyCastle.Security;
|
|
|
|
namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Prng
|
|
{
|
|
public class X931SecureRandom
|
|
: SecureRandom
|
|
{
|
|
private readonly bool mPredictionResistant;
|
|
private readonly SecureRandom mRandomSource;
|
|
private readonly X931Rng mDrbg;
|
|
|
|
internal X931SecureRandom(SecureRandom randomSource, X931Rng drbg, bool predictionResistant)
|
|
: base(null)
|
|
{
|
|
this.mRandomSource = randomSource;
|
|
this.mDrbg = drbg;
|
|
this.mPredictionResistant = predictionResistant;
|
|
}
|
|
|
|
public override void SetSeed(byte[] seed)
|
|
{
|
|
lock (this)
|
|
{
|
|
if (mRandomSource != null)
|
|
{
|
|
this.mRandomSource.SetSeed(seed);
|
|
}
|
|
}
|
|
}
|
|
|
|
#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
|
|
public override void SetSeed(Span<byte> seed)
|
|
{
|
|
lock (this)
|
|
{
|
|
if (mRandomSource != null)
|
|
{
|
|
this.mRandomSource.SetSeed(seed);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
public override void SetSeed(long seed)
|
|
{
|
|
lock (this)
|
|
{
|
|
// this will happen when SecureRandom() is created
|
|
if (mRandomSource != null)
|
|
{
|
|
this.mRandomSource.SetSeed(seed);
|
|
}
|
|
}
|
|
}
|
|
|
|
public override void NextBytes(byte[] bytes)
|
|
{
|
|
NextBytes(bytes, 0, bytes.Length);
|
|
}
|
|
|
|
public override void NextBytes(byte[] buf, int off, int len)
|
|
{
|
|
#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
|
|
NextBytes(buf.AsSpan(off, len));
|
|
#else
|
|
lock (this)
|
|
{
|
|
// check if a reseed is required...
|
|
if (mDrbg.Generate(buf, off, len, mPredictionResistant) < 0)
|
|
{
|
|
mDrbg.Reseed();
|
|
mDrbg.Generate(buf, off, len, mPredictionResistant);
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
|
|
public override void NextBytes(Span<byte> buffer)
|
|
{
|
|
lock (this)
|
|
{
|
|
// check if a reseed is required...
|
|
if (mDrbg.Generate(buffer, mPredictionResistant) < 0)
|
|
{
|
|
mDrbg.Reseed();
|
|
mDrbg.Generate(buffer, mPredictionResistant);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
public override byte[] GenerateSeed(int numBytes)
|
|
{
|
|
return EntropyUtilities.GenerateSeed(mDrbg.EntropySource, numBytes);
|
|
}
|
|
}
|
|
}
|
|
#pragma warning restore
|
|
#endif
|