43 lines
1.1 KiB
C#
43 lines
1.1 KiB
C#
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
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#pragma warning disable
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using System;
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namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Modes.Gcm
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{
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public class BasicGcmExponentiator
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: IGcmExponentiator
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{
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private GcmUtilities.FieldElement x;
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public void Init(byte[] x)
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{
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GcmUtilities.AsFieldElement(x, out this.x);
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}
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public void ExponentiateX(long pow, byte[] output)
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{
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GcmUtilities.FieldElement y;
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GcmUtilities.One(out y);
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if (pow > 0)
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{
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GcmUtilities.FieldElement powX = x;
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do
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{
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if ((pow & 1L) != 0)
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{
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GcmUtilities.Multiply(ref y, ref powX);
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}
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GcmUtilities.Square(ref powX);
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pow >>= 1;
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}
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while (pow > 0);
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}
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GcmUtilities.AsBytes(ref y, output);
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}
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}
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}
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#pragma warning restore
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#endif
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