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// From https://github.com/signalapp/libsignal-protocol-c/blob/master/protobuf/LocalStorageProtocol.proto
syntax = "proto2";
package textsecure;
option java_package = "org.whispersystems.libsignal.state";
option java_outer_classname = "StorageProtos";
message SessionStructure {
message Chain {
optional bytes senderRatchetKey = 1;
optional bytes senderRatchetKeyPrivate = 2;
message ChainKey {
optional uint32 index = 1;
optional bytes key = 2;
}
optional ChainKey chainKey = 3;
message MessageKey {
optional uint32 index = 1;
optional bytes cipherKey = 2;
optional bytes macKey = 3;
optional bytes iv = 4;
}
repeated MessageKey messageKeys = 4;
}
message PendingKeyExchange {
optional uint32 sequence = 1;
optional bytes localBaseKey = 2;
optional bytes localBaseKeyPrivate = 3;
optional bytes localRatchetKey = 4;
optional bytes localRatchetKeyPrivate = 5;
optional bytes localIdentityKey = 7;
optional bytes localIdentityKeyPrivate = 8;
}
message PendingPreKey {
optional uint32 preKeyId = 1;
optional int32 signedPreKeyId = 3;
optional bytes baseKey = 2;
}
optional uint32 sessionVersion = 1;
optional bytes localIdentityPublic = 2;
optional bytes remoteIdentityPublic = 3;
optional bytes rootKey = 4;
optional uint32 previousCounter = 5;
optional Chain senderChain = 6;
repeated Chain receiverChains = 7;
optional PendingKeyExchange pendingKeyExchange = 8;
optional PendingPreKey pendingPreKey = 9;
optional uint32 remoteRegistrationId = 10;
optional uint32 localRegistrationId = 11;
optional bool needsRefresh = 12;
optional bytes aliceBaseKey = 13;
}
message RecordStructure {
optional SessionStructure currentSession = 1;
repeated SessionStructure previousSessions = 2;
}
message PreKeyRecordStructure {
optional uint32 id = 1;
optional bytes publicKey = 2;
optional bytes privateKey = 3;
}
message SignedPreKeyRecordStructure {
optional uint32 id = 1;
optional bytes publicKey = 2;
optional bytes privateKey = 3;
optional bytes signature = 4;
optional fixed64 timestamp = 5;
}
message IdentityKeyPairStructure {
optional bytes publicKey = 1;
optional bytes privateKey = 2;
}
message SenderKeyStateStructure {
message SenderChainKey {
optional uint32 iteration = 1;
optional bytes seed = 2;
}
message SenderMessageKey {
optional uint32 iteration = 1;
optional bytes seed = 2;
}
message SenderSigningKey {
optional bytes public = 1;
optional bytes private = 2;
}
optional uint32 senderKeyId = 1;
optional SenderChainKey senderChainKey = 2;
optional SenderSigningKey senderSigningKey = 3;
repeated SenderMessageKey senderMessageKeys = 4;
}
message SenderKeyRecordStructure {
repeated SenderKeyStateStructure senderKeyStates = 1;
}
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