74 lines
1.3 KiB
C#
74 lines
1.3 KiB
C#
using System;
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using Org.BouncyCastle.Utilities;
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namespace Org.BouncyCastle.Crypto.Parameters;
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public class HkdfParameters : IDerivationParameters
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{
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private readonly byte[] ikm;
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private readonly bool skipExpand;
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private readonly byte[] salt;
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private readonly byte[] info;
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public virtual bool SkipExtract => skipExpand;
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private HkdfParameters(byte[] ikm, bool skip, byte[] salt, byte[] info)
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{
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if (ikm == null)
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{
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throw new ArgumentNullException("ikm");
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}
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this.ikm = Arrays.Clone(ikm);
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skipExpand = skip;
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if (salt == null || salt.Length == 0)
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{
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this.salt = null;
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}
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else
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{
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this.salt = Arrays.Clone(salt);
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}
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if (info == null)
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{
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this.info = new byte[0];
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}
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else
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{
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this.info = Arrays.Clone(info);
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}
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}
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public HkdfParameters(byte[] ikm, byte[] salt, byte[] info)
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: this(ikm, skip: false, salt, info)
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{
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}
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public static HkdfParameters SkipExtractParameters(byte[] ikm, byte[] info)
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{
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return new HkdfParameters(ikm, skip: true, null, info);
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}
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public static HkdfParameters DefaultParameters(byte[] ikm)
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{
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return new HkdfParameters(ikm, skip: false, null, null);
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}
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public virtual byte[] GetIkm()
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{
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return Arrays.Clone(ikm);
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}
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public virtual byte[] GetSalt()
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{
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return Arrays.Clone(salt);
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}
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public virtual byte[] GetInfo()
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{
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return Arrays.Clone(info);
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}
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}
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