Official cwtch.im peer and server implementations. https://cwtch.im
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syntax = "proto2";
package protocol;
import "ControlChannel.proto";
message CwtchServerPacket {
optional GroupMessage group_message = 1;
optional FetchMessage fetch_message = 2;
}
extend protocol.ChannelResult {
optional bytes server_nonce = 8200; // 32 random bytes
}
message FetchMessage {
}
message GroupMessage {
required bytes ciphertext = 1;
required bytes spamguard = 2;
required bytes signature = 3;
}
// DecryptedGroupMessage is *never* sent in the clear on the wire
// and is only ever sent when encrypted in the ciphertext parameter of
// GroupMessage
message DecryptedGroupMessage {
required string onion = 1;
required int32 timestamp = 2;
required string text = 3;
required bytes signed_group_id = 4;
required bytes previous_message_sig =5;
// Used to prevent analysis on text length, length is 1024 - len(text)
required bytes padding = 6;
}