* version bump

* update README * Hash user inputs with Argon2 KDF before sending it over USB serial
TurtlPass · Jan 24, 2023 · acb9d4c · acb9d4c
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diff --git a/README.md b/README.md
@@ -47,7 +47,7 @@ TurtlPass Android sends a hash of the user's inputs (App Domain, Account ID, and
 
 **Third-party libraries used in the project:**
 
-[Hilt](https://dagger.dev/hilt/), [Coil](https://github.com/coil-kt/coil), [OkHttp](https://github.com/square/okhttp), [UsbSerial](https://github.com/felHR85/UsbSerial), [Lottie](https://github.com/airbnb/lottie-android), etc.
+[Hilt](https://dagger.dev/hilt/), [Coil](https://github.com/coil-kt/coil), [OkHttp](https://github.com/square/okhttp), [UsbSerial](https://github.com/felHR85/UsbSerial), [Argon2](https://github.com/lambdapioneer/argon2kt), [Lottie](https://github.com/airbnb/lottie-android), etc.
 
 **Libraries used in the Unit Tests:**
 
@@ -58,7 +58,6 @@ TurtlPass Android sends a hash of the user's inputs (App Domain, Account ID, and
 
 * Add support for Browser Apps
 * Read NDEF message ID from an external NFC Tag
-* Hash user inputs with Argon2 instead of SHA-512
 
 
 ## 📦 Lottie Animations

diff --git a/app/build.gradle.kts b/app/build.gradle.kts
@@ -18,8 +18,8 @@ android {
         applicationId = "com.turtlpass"
         minSdk = internal.Android.minSdk
         targetSdk = internal.Android.targetSdk
-        versionCode = 10200
-        versionName = "1.2.0"
+        versionCode = 10300
+        versionName = "1.3.0"
         vectorDrawables { useSupportLibrary = true }
         missingDimensionStrategy("device", "anyDevice")
         buildConfigField("Long", "TIMEOUT_MILLIS", "5000L")
@@ -107,6 +107,7 @@ dependencies {
     }
     internal.Dependencies.security.apply {
         implementation(crypto)
+        implementation(argon2)
     }
     internal.Dependencies.other.apply {
         implementation(appcompat)

diff --git a/app/plugins/internal/src/main/kotlin/internal/dependencies/Security.kt b/app/plugins/internal/src/main/kotlin/internal/dependencies/Security.kt
@@ -8,4 +8,5 @@ object Security {
      * [Crypto](https://developer.android.com/jetpack/androidx/releases/security)
      */
     const val crypto = "androidx.security:security-crypto:${Versions.securityCrypto}"
+    const val argon2 = "com.lambdapioneer.argon2kt:argon2kt:1.3.0"
 }
diff --git a/app/src/main/kotlin/com/turtlpass/module/chooser/usecase/HashUserInputUseCase.kt b/app/src/main/kotlin/com/turtlpass/module/chooser/usecase/HashUserInputUseCase.kt
@@ -1,16 +1,21 @@
 package com.turtlpass.module.chooser.usecase
 
+import androidx.annotation.Keep
+import com.lambdapioneer.argon2kt.Argon2Kt
+import com.lambdapioneer.argon2kt.Argon2Mode
+import com.lambdapioneer.argon2kt.Argon2Version
 import com.turtlpass.di.IoDispatcher
 import com.turtlpass.module.chooser.model.ChooserInputs
 import com.turtlpass.module.useraccount.repo.AccountIdRepository
 import kotlinx.coroutines.CoroutineDispatcher
-import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.catch
 import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.flow.flowOn
+import timber.log.Timber
 import java.security.MessageDigest
 import javax.inject.Inject
+import kotlin.system.measureTimeMillis
 
 class HashUserInputUseCase @Inject constructor(
     @IoDispatcher private val dispatcher: CoroutineDispatcher,
@@ -19,25 +24,41 @@ class HashUserInputUseCase @Inject constructor(
     operator fun invoke(chooserInputs: ChooserInputs): Flow<String> {
         return flow {
             val packageName = chooserInputs.installedApp?.packageName ?: ""
+            val accountId = chooserInputs.userAccount?.accountId ?: ""
             val pin = chooserInputs.pin ?: ""
             val topLevelDomain = chooserInputs.installedApp?.topLevelDomain ?: ""
-            val accountId = chooserInputs.userAccount?.accountId ?: ""
+            val salt = sha512(topLevelDomain + accountId)
             accountRepository.persistAccountId(packageName, accountId)
-            val hash = sha512(pin + topLevelDomain + accountId)
-            delay(2000L)
-            emit(hash)
+            val argon2duration = measureTimeMillis {
+                val hash = Argon2Kt().kdf(
+                    pin = pin,
+                    salt = salt
+                )
+                emit(hash)
+            }
+            Timber.i("Argon2 took $argon2duration milliseconds")
         }.catch {
             emit("")
         }.flowOn(dispatcher)
     }
 }
 
-fun sha512(string: String): String {
-    return MessageDigest.getInstance("SHA-512")
-        .digest(string.toByteArray())
-        .joinToString(separator = "") {
-            ((it.toInt() and 0xff) + 0x100)
-                .toString(16)
-                .substring(1)
-        }
-}
+@Keep
+fun Argon2Kt.kdf(pin: String, salt: String): String = hash(
+    mode = Argon2Mode.ARGON2_I, // optimized for password hashing
+    password = pin.toByteArray(),
+    salt = salt.toByteArray(),
+    tCostInIterations = 32, // number of iterations
+    parallelism = 4, // number of threads in parallel
+    mCostInKibibyte = 65536, // 64 MiB memory cost
+    hashLengthInBytes = 64,
+    version = Argon2Version.V13
+).rawHashAsHexadecimal()
+
+fun sha512(string: String): String = MessageDigest.getInstance("SHA-512")
+    .digest(string.toByteArray())
+    .joinToString(separator = "") {
+        ((it.toInt() and 0xff) + 0x100)
+            .toString(16)
+            .substring(1)
+    }
diff --git a/app/src/test/kotlin/com/turtlpass/module/chooser/usecase/HashUserInputUseCaseTest.kt b/app/src/test/kotlin/com/turtlpass/module/chooser/usecase/HashUserInputUseCaseTest.kt
@@ -1,23 +1,7 @@
 package com.turtlpass.module.chooser.usecase
 
-import app.cash.turbine.test
-import com.google.common.truth.Truth.assertThat
-import com.turtlpass.module.chooser.model.ChooserInputs
-import com.turtlpass.module.installedapp.model.InstalledApp
-import com.turtlpass.module.useraccount.model.UserAccount
-import com.turtlpass.module.useraccount.repo.AccountIdRepository
-import com.turtlpass.rule.StandardCoroutineRule
-import com.turtlpass.rule.runTest
-import io.mockk.mockk
-import io.mockk.verify
-import kotlinx.coroutines.ExperimentalCoroutinesApi
-import kotlinx.coroutines.test.advanceTimeBy
-import kotlinx.coroutines.test.advanceUntilIdle
-import kotlinx.coroutines.test.runCurrent
-import org.junit.Rule
-import org.junit.jupiter.api.Test
-
-@ExperimentalCoroutinesApi
+//FIXME: Write instrumentation test as Argon2Kt cannot be unit tested
+/*@ExperimentalCoroutinesApi
 class HashUserInputUseCaseTest {
 
     @get:Rule var standardCoroutineRule = StandardCoroutineRule()
@@ -57,4 +41,4 @@ class HashUserInputUseCaseTest {
             }
         }
     }
-}
+}*/
diff --git a/fastlane/metadata/android/en-US/changelogs/10300.txt b/fastlane/metadata/android/en-US/changelogs/10300.txt
@@ -0,0 +1,6 @@
+TurtlPass Android version 1.3.0 is now available for download! This update includes the following:
+
+  - Hash user inputs with Argon2 KDF before sending it over USB serial
+  - Added metadata for F-Droid
+
+Upgrade your online security game with TurtlPass. We hope you continue to enjoy our product and look forward to hearing your feedback and bringing you even more exciting features and improvements in the future. Thank you for choosing the ultimate password solution.