diff --git a/matrix-sdk-android/src/androidTest/java/org/matrix/android/sdk/common/CryptoTestHelper.kt b/matrix-sdk-android/src/androidTest/java/org/matrix/android/sdk/common/CryptoTestHelper.kt
index 0e83cbba0c..89751d26e8 100644
--- a/matrix-sdk-android/src/androidTest/java/org/matrix/android/sdk/common/CryptoTestHelper.kt
+++ b/matrix-sdk-android/src/androidTest/java/org/matrix/android/sdk/common/CryptoTestHelper.kt
@@ -44,7 +44,7 @@ import org.matrix.android.sdk.api.session.room.roomSummaryQueryParams
 import org.matrix.android.sdk.api.util.Optional
 import org.matrix.android.sdk.api.crypto.MXCRYPTO_ALGORITHM_MEGOLM
 import org.matrix.android.sdk.api.crypto.MXCRYPTO_ALGORITHM_MEGOLM_BACKUP
-import org.matrix.android.sdk.internal.crypto.keysbackup.model.MegolmBackupAuthData
+import org.matrix.android.sdk.api.session.crypto.keysbackup.MegolmBackupAuthData
 import org.matrix.android.sdk.api.session.crypto.keysbackup.MegolmBackupCreationInfo
 import java.util.UUID
 import kotlin.coroutines.Continuation
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/keysbackup/model/MegolmBackupAuthData.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/keysbackup/MegolmBackupAuthData.kt
similarity index 79%
rename from matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/keysbackup/model/MegolmBackupAuthData.kt
rename to matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/keysbackup/MegolmBackupAuthData.kt
index 17c895762c..9cf02ca22e 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/keysbackup/model/MegolmBackupAuthData.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/keysbackup/MegolmBackupAuthData.kt
@@ -14,11 +14,12 @@
  * limitations under the License.
  */
 
-package org.matrix.android.sdk.internal.crypto.keysbackup.model
+package org.matrix.android.sdk.api.session.crypto.keysbackup
 
 import com.squareup.moshi.Json
 import com.squareup.moshi.JsonClass
 import org.matrix.android.sdk.api.util.JsonDict
+import org.matrix.android.sdk.internal.crypto.keysbackup.model.SignalableMegolmBackupAuthData
 import org.matrix.android.sdk.internal.di.MoshiProvider
 
 /**
@@ -54,7 +55,7 @@ data class MegolmBackupAuthData(
         val signatures: Map<String, Map<String, String>>? = null
 ) {
 
-    fun toJsonDict(): JsonDict {
+    internal fun toJsonDict(): JsonDict {
         val moshi = MoshiProvider.providesMoshi()
         val adapter = moshi.adapter(Map::class.java)
 
@@ -67,7 +68,7 @@ data class MegolmBackupAuthData(
                 }
     }
 
-    fun signalableJSONDictionary(): JsonDict {
+    internal fun signalableJSONDictionary(): JsonDict {
         return SignalableMegolmBackupAuthData(
                 publicKey = publicKey,
                 privateKeySalt = privateKeySalt,
@@ -77,19 +78,3 @@ data class MegolmBackupAuthData(
     }
 }
 
-internal data class SignalableMegolmBackupAuthData(
-        val publicKey: String,
-        val privateKeySalt: String? = null,
-        val privateKeyIterations: Int? = null
-) {
-    fun signalableJSONDictionary(): JsonDict = HashMap<String, Any>().apply {
-        put("public_key", publicKey)
-
-        privateKeySalt?.let {
-            put("private_key_salt", it)
-        }
-        privateKeyIterations?.let {
-            put("private_key_iterations", it)
-        }
-    }
-}
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/keysbackup/MegolmBackupCreationInfo.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/keysbackup/MegolmBackupCreationInfo.kt
index 07dd18d1f1..0d708b8d73 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/keysbackup/MegolmBackupCreationInfo.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/keysbackup/MegolmBackupCreationInfo.kt
@@ -16,8 +16,6 @@
 
 package org.matrix.android.sdk.api.session.crypto.keysbackup
 
-import org.matrix.android.sdk.internal.crypto.keysbackup.model.MegolmBackupAuthData
-
 /**
  * Data retrieved from Olm library. algorithm and authData will be send to the homeserver, and recoveryKey will be displayed to the user
  */
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/keysbackup/DefaultKeysBackupService.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/keysbackup/DefaultKeysBackupService.kt
index 824dfc53f5..f2c6bbd05a 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/keysbackup/DefaultKeysBackupService.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/keysbackup/DefaultKeysBackupService.kt
@@ -49,11 +49,11 @@ import org.matrix.android.sdk.api.util.awaitCallback
 import org.matrix.android.sdk.api.util.fromBase64
 import org.matrix.android.sdk.api.crypto.MXCRYPTO_ALGORITHM_MEGOLM_BACKUP
 import org.matrix.android.sdk.api.session.crypto.keysbackup.KeysBackupVersionTrustSignature
+import org.matrix.android.sdk.api.session.crypto.keysbackup.MegolmBackupAuthData
 import org.matrix.android.sdk.internal.crypto.MXOlmDevice
 import org.matrix.android.sdk.internal.crypto.MegolmSessionData
 import org.matrix.android.sdk.internal.crypto.ObjectSigner
 import org.matrix.android.sdk.internal.crypto.actions.MegolmSessionDataImporter
-import org.matrix.android.sdk.internal.crypto.keysbackup.model.MegolmBackupAuthData
 import org.matrix.android.sdk.internal.crypto.keysbackup.model.SignalableMegolmBackupAuthData
 import org.matrix.android.sdk.internal.crypto.keysbackup.model.rest.BackupKeysResult
 import org.matrix.android.sdk.internal.crypto.keysbackup.model.rest.CreateKeysBackupVersionBody
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/keysbackup/model/SignalableMegolmBackupAuthData.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/keysbackup/model/SignalableMegolmBackupAuthData.kt
new file mode 100644
index 0000000000..85f75a61e2
--- /dev/null
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/keysbackup/model/SignalableMegolmBackupAuthData.kt
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2020 The Matrix.org Foundation C.I.C.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.matrix.android.sdk.internal.crypto.keysbackup.model
+
+import org.matrix.android.sdk.api.util.JsonDict
+
+internal data class SignalableMegolmBackupAuthData(
+        val publicKey: String,
+        val privateKeySalt: String? = null,
+        val privateKeyIterations: Int? = null
+) {
+    fun signalableJSONDictionary(): JsonDict = HashMap<String, Any>().apply {
+        put("public_key", publicKey)
+
+        privateKeySalt?.let {
+            put("private_key_salt", it)
+        }
+        privateKeyIterations?.let {
+            put("private_key_iterations", it)
+        }
+    }
+}
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/keysbackup/model/rest/KeysAlgorithmAndData.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/keysbackup/model/rest/KeysAlgorithmAndData.kt
index 51a0556d87..d6e0a2f6b2 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/keysbackup/model/rest/KeysAlgorithmAndData.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/keysbackup/model/rest/KeysAlgorithmAndData.kt
@@ -18,7 +18,7 @@ package org.matrix.android.sdk.internal.crypto.keysbackup.model.rest
 
 import org.matrix.android.sdk.api.util.JsonDict
 import org.matrix.android.sdk.api.crypto.MXCRYPTO_ALGORITHM_MEGOLM_BACKUP
-import org.matrix.android.sdk.internal.crypto.keysbackup.model.MegolmBackupAuthData
+import org.matrix.android.sdk.api.session.crypto.keysbackup.MegolmBackupAuthData
 import org.matrix.android.sdk.internal.di.MoshiProvider
 
 /**