diff --git a/build.gradle.kts b/build.gradle.kts
index 42e2d2c..7386d7f 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -8,4 +8,5 @@ plugins {
     alias(libs.plugins.kotlin.serialization) apply false
     alias(libs.plugins.hilt) apply false
     alias(libs.plugins.ksp) apply false
+    alias(libs.plugins.protobuf) apply false
 }
\ No newline at end of file
diff --git a/core/data/build.gradle.kts b/core/data/build.gradle.kts
index ee4ccdf..023da1e 100644
--- a/core/data/build.gradle.kts
+++ b/core/data/build.gradle.kts
@@ -3,16 +3,40 @@ import com.yapp.app.setNamespace
 plugins {
     id("yapp.android.library")
     id("yapp.android.hilt")
+    alias(libs.plugins.protobuf)
 }
 
-android{
+android {
     setNamespace("core.data")
 }
 
+protobuf {
+    protoc {
+        artifact = libs.protobuf.protoc.get().toString()
+    }
+    generateProtoTasks {
+        all().forEach { task ->
+            task.builtins {
+                register("java") {
+                    option("lite")
+                }
+            }
+        }
+    }
+}
+
 dependencies {
     implementation(project(":core:model"))
     implementation(project(":core:data-api"))
 
+    implementation(libs.androidx.datastore.core)
+    implementation(libs.androidx.datastore.preferences)
+    implementation(libs.protobuf.kotlin.lite)
+
+    ksp(libs.encrypted.datastore.preference.ksp)
+    implementation(libs.encrypted.datastore.preference.ksp.annotations)
+    implementation(libs.encrypted.datastore.preference.security)
+
     implementation(libs.androidx.core.ktx)
     implementation(libs.retrofit.core)
     implementation(libs.retrofit.kotlin.serialization)
diff --git a/core/data/src/main/java/com/yapp/core/data/local/DataStoreModule.kt b/core/data/src/main/java/com/yapp/core/data/local/DataStoreModule.kt
new file mode 100644
index 0000000..99b9dc7
--- /dev/null
+++ b/core/data/src/main/java/com/yapp/core/data/local/DataStoreModule.kt
@@ -0,0 +1,58 @@
+package com.yapp.core.data.local
+
+import android.content.Context
+import androidx.datastore.core.DataStore
+import androidx.datastore.core.handlers.ReplaceFileCorruptionHandler
+import androidx.datastore.preferences.core.PreferenceDataStoreFactory
+import androidx.datastore.preferences.core.Preferences
+import androidx.datastore.preferences.core.emptyPreferences
+import androidx.datastore.preferences.preferencesDataStoreFile
+import dagger.Module
+import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.android.qualifiers.ApplicationContext
+import dagger.hilt.components.SingletonComponent
+import tech.thdev.useful.encrypted.data.store.preferences.security.generateUsefulSecurity
+import javax.inject.Qualifier
+import javax.inject.Singleton
+
+@InstallIn(SingletonComponent::class)
+@Module
+internal object DataStoreModule {
+
+    @Singleton
+    @Provides
+    fun provideDataStore(@ApplicationContext context: Context): DataStore<Preferences> {
+        return PreferenceDataStoreFactory.create(
+            corruptionHandler = ReplaceFileCorruptionHandler(
+                produceNewData = { emptyPreferences() },
+            ),
+            produceFile = { context.preferencesDataStoreFile(DATASTORE_NAME) },
+        )
+    }
+
+    @EncryptedDataStore
+    @Singleton
+    @Provides
+    fun providedEncryptedDataStore(@ApplicationContext context: Context): DataStore<Preferences> {
+        return PreferenceDataStoreFactory.create(
+            corruptionHandler = ReplaceFileCorruptionHandler(
+                produceNewData = { emptyPreferences() },
+            ),
+            produceFile = { context.preferencesDataStoreFile(ENCRYPTED_DATASTORE_NAME) },
+        )
+    }
+
+    @Singleton
+    @Provides
+    fun provideSecurityPreference(
+        @EncryptedDataStore dataStore: DataStore<Preferences>,
+    ): SecurityPreferences = dataStore.generateSecurityPreferences(generateUsefulSecurity())
+
+    private const val DATASTORE_NAME = "yapp-datastore"
+    private const val ENCRYPTED_DATASTORE_NAME = "yapp-datastore-encrypted"
+}
+
+@Qualifier
+@Retention(AnnotationRetention.BINARY)
+internal annotation class EncryptedDataStore
diff --git a/core/data/src/main/java/com/yapp/core/data/local/SecurityPreferences.kt b/core/data/src/main/java/com/yapp/core/data/local/SecurityPreferences.kt
new file mode 100644
index 0000000..59de5ec
--- /dev/null
+++ b/core/data/src/main/java/com/yapp/core/data/local/SecurityPreferences.kt
@@ -0,0 +1,31 @@
+package com.yapp.core.data.local
+
+import kotlinx.coroutines.flow.Flow
+import tech.thdev.useful.encrypted.data.store.preferences.ksp.annotations.UsefulPreferences
+import tech.thdev.useful.encrypted.data.store.preferences.ksp.annotations.value.ClearValues
+import tech.thdev.useful.encrypted.data.store.preferences.ksp.annotations.value.GetValue
+import tech.thdev.useful.encrypted.data.store.preferences.ksp.annotations.value.SetValue
+
+@UsefulPreferences
+interface SecurityPreferences {
+
+    @GetValue(KEY_ACCESS_TOKEN, defaultValue = "")
+    fun flowAccessToken(): Flow<String>
+
+    @SetValue(KEY_ACCESS_TOKEN)
+    suspend fun setAccessToken(value: String)
+
+    @GetValue(KEY_REFRESH_TOKEN, defaultValue = "")
+    fun flowRefreshToken(): Flow<String>
+
+    @SetValue(KEY_REFRESH_TOKEN)
+    suspend fun setRefreshToken(value: String)
+
+    @ClearValues
+    suspend fun clearAll()
+
+    companion object {
+        private const val KEY_ACCESS_TOKEN = "key-access-token"
+        private const val KEY_REFRESH_TOKEN = "key-refresh-token"
+    }
+}
diff --git a/core/model/src/main/java/com/yapp/model/YappJWT.kt b/core/model/src/main/java/com/yapp/model/YappJWT.kt
deleted file mode 100644
index 3a0b8c7..0000000
--- a/core/model/src/main/java/com/yapp/model/YappJWT.kt
+++ /dev/null
@@ -1,6 +0,0 @@
-package com.yapp.model
-
-data class YappJWT(
-    val accessToken: String,
-    val refreshToken: String,
-)
\ No newline at end of file
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 3642a05..500ca19 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -28,6 +28,11 @@ okhttp = "4.12.0"
 
 timber = "5.0.1"
 
+androidxDatastore = "1.1.2"
+encryptedDatastore = "1.9.25-1.0.20-1.2.0"
+protobuf = "3.24.4"
+protobufPlugin = "0.9.4"
+
 
 [libraries]
 android-gradlePlugin = { group = "com.android.tools.build", name = "gradle", version.ref = "agp" }
@@ -68,6 +73,15 @@ okhttp-logging = { group = "com.squareup.okhttp3", name = "logging-interceptor",
 
 timber = { group = "com.jakewharton.timber", name = "timber", version.ref = "timber" }
 
+androidx-datastore-core = { group = "androidx.datastore", name = "datastore", version.ref = "androidxDatastore" }
+androidx-datastore-preferences = { group = "androidx.datastore", name = "datastore-preferences", version.ref = "androidxDatastore" }
+encrypted-datastore-preference-ksp = { group = "tech.thdev", name = "useful-encrypted-data-store-preferences-ksp", version.ref = "encryptedDatastore" }
+encrypted-datastore-preference-ksp-annotations = { group = "tech.thdev", name = "useful-encrypted-data-store-preferences-ksp-annotations", version.ref = "encryptedDatastore" }
+encrypted-datastore-preference-security = { group = "tech.thdev", name = "useful-encrypted-data-store-preferences-security", version.ref = "encryptedDatastore" }
+
+protobuf-kotlin-lite = { group = "com.google.protobuf", name = "protobuf-kotlin-lite", version.ref = "protobuf" }
+protobuf-protoc = { group = "com.google.protobuf", name = "protoc", version.ref = "protobuf" }
+
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }
 android-library = { id = "com.android.library", version.ref = "agp" }
@@ -77,3 +91,4 @@ kotlin-serialization = { id = "org.jetbrains.kotlin.plugin.serialization", versi
 jetbrains-kotlin-jvm = { id = "org.jetbrains.kotlin.jvm", version.ref = "jetbrainsKotlinJvm" }
 hilt = { id = "com.google.dagger.hilt.android", version.ref = "hilt" }
 ksp = { id = "com.google.devtools.ksp", version.ref = "ksp" }
+protobuf = { id = "com.google.protobuf", version.ref = "protobufPlugin" }