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using System;
using Org.BouncyCastle.Crypto.Utilities;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Pqc.Crypto.SphincsPlus
{
internal class Adrs
{
public static uint WOTS_HASH = 0;
public static uint WOTS_PK = 1;
public static uint TREE = 2;
public static uint FORS_TREE = 3;
public static uint FORS_PK = 4;
public static uint WOTS_PRF = 5;
public static uint FORS_PRF = 6;
internal static int OFFSET_LAYER = 0;
internal static int OFFSET_TREE = 4;
static int OFFSET_TREE_HGT = 24;
static int OFFSET_TREE_INDEX = 28;
internal static int OFFSET_TYPE = 16;
static int OFFSET_KP_ADDR = 20;
static int OFFSET_CHAIN_ADDR = 24;
static int OFFSET_HASH_ADDR = 28;
internal byte[] value = new byte[32];
internal Adrs()
{
}
internal Adrs(Adrs adrs)
{
Array.Copy(adrs.value, 0, this.value, 0, adrs.value.Length);
}
public void SetLayerAddress(uint layer)
{
Pack.UInt32_To_BE(layer, value, OFFSET_LAYER);
}
public uint GetLayerAddress()
{
return Pack.BE_To_UInt32(value, OFFSET_LAYER);
}
public void SetTreeAddress(ulong tree)
{
// tree address is 12 bytes
Pack.UInt64_To_BE(tree, value, OFFSET_TREE + 4);
}
public ulong GetTreeAddress()
{
return Pack.BE_To_UInt64(value, OFFSET_TREE + 4);
}
public void SetTreeHeight(uint height)
{
Pack.UInt32_To_BE(height, value, OFFSET_TREE_HGT);
}
public uint GetTreeHeight()
{
return Pack.BE_To_UInt32(value, OFFSET_TREE_HGT);
}
public void SetTreeIndex(uint index)
{
Pack.UInt32_To_BE(index, value, OFFSET_TREE_INDEX);
}
public uint GetTreeIndex()
{
return Pack.BE_To_UInt32(value, OFFSET_TREE_INDEX);
}
// resets part of value to zero in line with 2.7.3
public void SetType(uint type)
{
Pack.UInt32_To_BE(type, value, OFFSET_TYPE);
Arrays.Fill(value, 20, value.Length, (byte) 0);
}
public void ChangeType(uint type)
{
Pack.UInt32_To_BE(type, value, OFFSET_TYPE);
}
public new uint GetType()
{
return Pack.BE_To_UInt32(value, OFFSET_TYPE);
}
public void SetKeyPairAddress(uint keyPairAddr)
{
Pack.UInt32_To_BE(keyPairAddr, value, OFFSET_KP_ADDR);
}
public uint GetKeyPairAddress()
{
return Pack.BE_To_UInt32(value, OFFSET_KP_ADDR);
}
public void SetHashAddress(uint hashAddr)
{
Pack.UInt32_To_BE(hashAddr, value, OFFSET_HASH_ADDR);
}
public void SetChainAddress(uint chainAddr)
{
Pack.UInt32_To_BE(chainAddr, value, OFFSET_CHAIN_ADDR);
}
}
}
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