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