public static UpdateMemberRequest ToUpdateMemberRequest(
ProtoMember member,
IList <MemberOperation> operations,
ISigner signer)
{
return(ToUpdateMemberRequest(member, operations, signer, new List <MemberOperationMetadata>()));
}
public static UpdateMemberRequest ToUpdateMemberRequest(
ProtoMember member,
IList <MemberOperation> operations,
ISigner signer,
IList <MemberOperationMetadata> metadata)
{
var update = new MemberUpdate
{
MemberId = member.Id,
PrevHash = member.LastHash,
Operations = { operations }
};
return(new UpdateMemberRequest
{
Update = update,
UpdateSignature = new Signature
{
MemberId = member.Id,
KeyId = signer.GetKeyId(),
Signature_ = signer.Sign(update)
},
Metadata = { metadata }
});
}
/// <summary>
/// Updates member by applying the specified operations.
/// </summary>
/// <param name="member">the member to update, which should be the member that the
/// client is bond to</param>
/// <param name="operations">the operations to apply</param>
/// <param name="metadata">the updated member</param>
/// <returns></returns>
public Task <ProtoMember> UpdateMember(
ProtoMember member,
IList <MemberOperation> operations,
IList <MemberOperationMetadata> metadata)
{
var signer = cryptoEngine.CreateSigner(Level.Privileged);
var request = Util.ToUpdateMemberRequest(member, operations, signer, metadata);
return(gateway(authenticationContext()).UpdateMemberAsync(request)
.ToTask(response => response.Member));
}
public static void VerifySignature(
ProtoMember member,
IMessage payload,
Signature signature)
{
Key key;
try
{
key = member.Keys.Single(k => k.Id.Equals(signature.KeyId));
}
catch (InvalidOperationException)
{
throw new CryptoKeyNotFoundException(signature.KeyId);
}
var verifier = new Ed25519Veifier(key.PublicKey);
verifier.Verify(payload, signature.Signature_);
}