Ji O
27 lines
745 B
C#
27 lines
745 B
C#
using System.IO;
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public class UmaAssetBundleStream : FileStream
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{
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private const int headerSize = 256;
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private readonly byte[] baseKeys = Config.Instance.ABKey;
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private readonly byte[] keys;
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public UmaAssetBundleStream(string filename, byte[] keys) : base(filename, FileMode.Open, FileAccess.Read)
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{
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this.keys = keys;
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}
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public override int Read(byte[] buffer, int offset, int count)
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{
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long StartPosition = Position;
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int res = base.Read(buffer, offset, count);
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for (long i = (StartPosition < headerSize ? headerSize - StartPosition : 0); i < count; i++)
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{
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buffer[i] ^= keys[(StartPosition + i) % (baseKeys.Length * 8)];
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}
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return res;
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}
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}
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