84 lines
2.1 KiB
C#
84 lines
2.1 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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using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Math;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Parameters
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{
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public class DHPublicKeyParameters
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: DHKeyParameters
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{
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private static BigInteger Validate(BigInteger y, DHParameters dhParams)
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{
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if (y == null)
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throw new ArgumentNullException("y");
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// TLS check
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if (y.CompareTo(BigInteger.Two) < 0 || y.CompareTo(dhParams.P.Subtract(BigInteger.Two)) > 0)
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throw new ArgumentException("invalid DH public key", "y");
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// we can't validate without Q.
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if (dhParams.Q != null
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&& !y.ModPow(dhParams.Q, dhParams.P).Equals(BigInteger.One))
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{
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throw new ArgumentException("y value does not appear to be in correct group", "y");
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}
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return y;
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}
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private readonly BigInteger y;
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public DHPublicKeyParameters(
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BigInteger y,
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DHParameters parameters)
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: base(false, parameters)
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{
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this.y = Validate(y, parameters);
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}
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public DHPublicKeyParameters(
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BigInteger y,
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DHParameters parameters,
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DerObjectIdentifier algorithmOid)
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: base(false, parameters, algorithmOid)
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{
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this.y = Validate(y, parameters);
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}
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public virtual BigInteger Y
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{
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get { return y; }
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}
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public override bool Equals(
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object obj)
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{
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if (obj == this)
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return true;
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DHPublicKeyParameters other = obj as DHPublicKeyParameters;
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if (other == null)
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return false;
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return Equals(other);
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}
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protected bool Equals(
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DHPublicKeyParameters other)
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{
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return y.Equals(other.y) && base.Equals(other);
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}
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public override int GetHashCode()
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{
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return y.GetHashCode() ^ base.GetHashCode();
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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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