34 lines
1.1 KiB
C#
34 lines
1.1 KiB
C#
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#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
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#pragma warning disable
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Multiplier
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{
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public abstract class AbstractECMultiplier
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: ECMultiplier
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{
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public virtual ECPoint Multiply(ECPoint p, BigInteger k)
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{
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int sign = k.SignValue;
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if (sign == 0 || p.IsInfinity)
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return p.Curve.Infinity;
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ECPoint positive = MultiplyPositive(p, k.Abs());
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ECPoint result = sign > 0 ? positive : positive.Negate();
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/*
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* Although the various multipliers ought not to produce invalid output under normal
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* circumstances, a final check here is advised to guard against fault attacks.
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*/
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return CheckResult(result);
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}
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protected abstract ECPoint MultiplyPositive(ECPoint p, BigInteger k);
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protected virtual ECPoint CheckResult(ECPoint p)
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{
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return ECAlgorithms.ImplCheckResult(p);
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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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