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InvalidBlockSignatureException.cs
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InvalidBlockSignatureException.cs
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using System;
using System.Collections.Immutable;
using System.Diagnostics.Contracts;
using System.Runtime.Serialization;
using Libplanet.Crypto;
using Libplanet.Serialization;
using static Libplanet.ByteUtil;
namespace Libplanet.Blocks
{
/// <summary>
/// An exception thrown when a block's signature is invalid.
/// </summary>
[Serializable]
public class InvalidBlockSignatureException : InvalidBlockException
{
/// <summary>
/// Creates a new <see cref="InvalidBlockPublicKeyException"/> instance.
/// </summary>
/// <param name="publicKey">The public key used for signing the block.</param>
/// <param name="invalidSignature">The block signature which is invalid.</param>
/// <param name="message">A message that describes the error.</param>
public InvalidBlockSignatureException(
PublicKey? publicKey,
ImmutableArray<byte>? invalidSignature,
string message
)
: base(
message +
(publicKey is { } pubKey ? $"\nPublic key: {pubKey}" : string.Empty) +
(invalidSignature is { } sig ? $"\nInvalid signature: {Hex(sig)}" : string.Empty)
)
{
PublicKey = publicKey;
InvalidSignature = invalidSignature;
}
protected InvalidBlockSignatureException(
SerializationInfo info,
StreamingContext context
)
: base(info, context)
{
byte[]? pubKeyBytes;
try
{
pubKeyBytes = info.GetValue<byte[]>(nameof(PublicKey));
}
catch (SerializationException)
{
pubKeyBytes = null;
}
byte[]? sig;
try
{
sig = info.GetValue<byte[]>(nameof(InvalidSignature));
}
catch (SerializationException)
{
sig = null;
}
PublicKey = pubKeyBytes is { } p ? new PublicKey(p) : null;
InvalidSignature = sig is { } s
? ImmutableArray.Create(s)
: (ImmutableArray<byte>?)null;
}
/// <summary>
/// The public key used for signing the block.
/// </summary>
[Pure]
public PublicKey? PublicKey { get; }
/// <summary>
/// The block signature which is invalid.
/// </summary>
[Pure]
public ImmutableArray<byte>? InvalidSignature { get; }
public override void GetObjectData(SerializationInfo info, StreamingContext context)
{
base.GetObjectData(info, context);
if (PublicKey is { } pubKey)
{
info.AddValue(nameof(PublicKey), pubKey.Format(true));
}
if (InvalidSignature is { } sig)
{
info.AddValue(nameof(InvalidSignature), sig.ToBuilder().ToArray());
}
}
}
}