public BadShareProof(int complainingAuthorityIndex, CertificateStorage certificateStorage, Signed<VotingParameters> signedParameters, AllShareParts allShareParts, IDictionary<int, TrapDoor> trapDoors, IDictionary<int, Certificate> authorities)
{
ComplainingAuthorityIndex = complainingAuthorityIndex;
CertificateStorage = certificateStorage;
SignedParameters = signedParameters;
AllShareParts = allShareParts;
TrapDoors = new Dictionary<int, TrapDoor>(trapDoors);
Authorities = new Dictionary<int, Certificate>(authorities);
}
/// <summary>
/// Verifies shares from all authorities.
/// </summary>
/// <param name="allShareParts">All share parts from all authorities.</param>
/// <returns>Signed response.</returns>
public Signed<ShareResponse> VerifyShares(AllShareParts allShareParts)
{
if (allShareParts == null)
throw new ArgumentNullException("allShareParts");
List<Share> shares = new List<Share>();
List<List<VerificationValue>> verificationValuesByAuthority = new List<List<VerificationValue>>();
bool acceptShares = true;
foreach (Signed<SharePart> signedShareParrt in allShareParts.ShareParts)
{
SharePart sharePart = signedShareParrt.Value;
acceptShares &= signedShareParrt.Verify(this.certificateStorage);
acceptShares &= signedShareParrt.Certificate.IsIdentic(this.authorities[sharePart.AuthorityIndex]);
Encrypted<Share> encryptedShare = sharePart.EncryptedShares[this.authority.Index - 1];
shares.Add(encryptedShare.Decrypt(this.certificate));
verificationValuesByAuthority.Add(new List<VerificationValue>());
for (int l = 0; l <= this.parameters.Thereshold; l++)
{
verificationValuesByAuthority[verificationValuesByAuthority.Count - 1].Add(sharePart.VerificationValues[l]);
}
}
acceptShares &= this.authority.VerifySharing(shares, verificationValuesByAuthority);
BigInt publicKeyPart = acceptShares ? this.authority.PublicKeyPart : new BigInt(0);
ShareResponse response = new ShareResponse(allShareParts.VotingId, this.authority.Index, acceptShares, publicKeyPart, this.signedParameters);
return new Signed<ShareResponse>(response, this.certificate);
}
/// <summary>
/// Deserializes binary data to object.
/// </summary>
/// <param name="context">Context for deserialization</param>
protected override void Deserialize(DeserializeContext context, byte version)
{
base.Deserialize(context, version);
AllShareParts = context.ReadObject<AllShareParts>();
}
/// <summary>
/// Creates a proof for bad shares.
/// </summary>
/// <param name="allShareParts">All share parts from all authorities.</param>
/// <returns>Signed proof data.</returns>
public Signed<BadShareProof> CreateBadShareProof(AllShareParts allShareParts)
{
Dictionary<int, TrapDoor> trapDoors = new Dictionary<int, TrapDoor>();
foreach (Signed<SharePart> signedSharePart in allShareParts.ShareParts)
{
SharePart sharePart = signedSharePart.Value;
Encrypted<Share> encryptedShare = sharePart.EncryptedShares[this.authority.Index - 1];
trapDoors.Add(sharePart.AuthorityIndex, encryptedShare.CreateTrapDoor(this.certificate));
}
BadShareProof badShareProof = new BadShareProof(
this.authority.Index,
this.certificateStorage,
this.signedParameters,
allShareParts,
trapDoors,
this.authorities);
return new Signed<BadShareProof>(badShareProof, this.certificate);
}
public FetchAllSharesResponse(Guid requestId, AllShareParts allShareParts)
: base(requestId)
{
AllShareParts = allShareParts;
}