diff --git a/ConversationsClassic/AppData/Model/OMEMO.swift b/ConversationsClassic/AppData/Model/OMEMO.swift
new file mode 100644
index 0000000..ff2be0d
--- /dev/null
+++ b/ConversationsClassic/AppData/Model/OMEMO.swift
@@ -0,0 +1,44 @@
+import Foundation
+import GRDB
+import Martin
+
+// MARK: - Session
+struct OMEMOSession: Codable & Equatable, DatabaseValueConvertible {
+    static let databaseTableName = "omemo_sessions"
+
+    let account: String
+    let name: String
+    let deviceId: Int
+    let key: String
+}
+
+// MARK: - Identity
+struct OMEMOIdentity: Codable & Equatable, DatabaseValueConvertible {
+    static let databaseTableName = "omemo_identities"
+
+    let account: String
+    let name: String
+    let deviceId: Int
+    let fingerprint: String
+    let key: Data
+    let own: Bool
+    let status: Int
+}
+
+// MARK: - PreKey
+struct OMEMOPreKey: Codable & Equatable, DatabaseValueConvertible {
+    static let databaseTableName = "omemo_pre_keys"
+
+    let account: String
+    let id: Int
+    let key: Data
+}
+
+// MARK: - SignedPreKey
+struct OMEMOSignedPreKey: Codable & Equatable, DatabaseValueConvertible {
+    static let databaseTableName = "omemo_signed_pre_keys"
+
+    let account: String
+    let id: Int
+    let key: Data
+}