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32 lines
813 B
32 lines
813 B
#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 BestHTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Multiplier |
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{ |
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public class MontgomeryLadderMultiplier |
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: AbstractECMultiplier |
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{ |
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/** |
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* Montgomery ladder. |
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*/ |
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protected override ECPoint MultiplyPositive(ECPoint p, BigInteger k) |
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{ |
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ECPoint[] R = new ECPoint[]{ p.Curve.Infinity, p }; |
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int n = k.BitLength; |
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int i = n; |
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while (--i >= 0) |
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{ |
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int b = k.TestBit(i) ? 1 : 0; |
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int bp = 1 - b; |
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R[bp] = R[bp].Add(R[b]); |
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R[b] = R[b].Twice(); |
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} |
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return R[0]; |
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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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