97 lines
3.0 KiB
C#
97 lines
3.0 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.Utilities;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Parameters
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{
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public class KdfCounterParameters : IDerivationParameters
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{
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private byte[] ki;
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private byte[] fixedInputDataCounterPrefix;
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private byte[] fixedInputDataCounterSuffix;
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private int r;
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/// <summary>
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/// Base constructor - suffix fixed input data only.
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/// </summary>
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/// <param name="ki">the KDF seed</param>
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/// <param name="fixedInputDataCounterSuffix">fixed input data to follow counter.</param>
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/// <param name="r">length of the counter in bits</param>
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public KdfCounterParameters(byte[] ki, byte[] fixedInputDataCounterSuffix, int r) : this(ki, null, fixedInputDataCounterSuffix, r)
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{
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}
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/// <summary>
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/// Base constructor - prefix and suffix fixed input data.
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/// </summary>
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/// <param name="ki">the KDF seed</param>
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/// <param name="fixedInputDataCounterPrefix">fixed input data to precede counter</param>
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/// <param name="fixedInputDataCounterSuffix">fixed input data to follow counter.</param>
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/// <param name="r">length of the counter in bits.</param>
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public KdfCounterParameters(byte[] ki, byte[] fixedInputDataCounterPrefix, byte[] fixedInputDataCounterSuffix, int r)
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{
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if (ki == null)
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{
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throw new ArgumentException("A KDF requires Ki (a seed) as input");
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}
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this.ki = Arrays.Clone(ki);
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if (fixedInputDataCounterPrefix == null)
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{
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this.fixedInputDataCounterPrefix = new byte[0];
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}
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else
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{
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this.fixedInputDataCounterPrefix = Arrays.Clone(fixedInputDataCounterPrefix);
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}
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if (fixedInputDataCounterSuffix == null)
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{
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this.fixedInputDataCounterSuffix = new byte[0];
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}
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else
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{
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this.fixedInputDataCounterSuffix = Arrays.Clone(fixedInputDataCounterSuffix);
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}
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if (r != 8 && r != 16 && r != 24 && r != 32)
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{
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throw new ArgumentException("Length of counter should be 8, 16, 24 or 32");
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}
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this.r = r;
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}
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public byte[] Ki
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{
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get { return ki; }
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}
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public byte[] FixedInputData
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{
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get { return Arrays.Clone(fixedInputDataCounterSuffix); }
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}
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public byte[] FixedInputDataCounterPrefix
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{
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get { return Arrays.Clone(fixedInputDataCounterPrefix); }
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}
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public byte[] FixedInputDataCounterSuffix
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{
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get { return Arrays.Clone(fixedInputDataCounterSuffix); }
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}
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public int R
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{
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get { return r; }
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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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