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/*
* Copyright 2023 Google LLC
*
* 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.
*/
/*
* This Java source file was generated by the Gradle 'init' task.
*/
package com.google.security.cryptauth.lib.securegcm
import java.nio.charset.StandardCharsets
import org.junit.jupiter.api.Assertions.assertArrayEquals
import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.Assertions.assertFalse
import org.junit.jupiter.api.Assertions.assertNotEquals
import org.junit.jupiter.api.Assertions.assertTrue
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.assertDoesNotThrow
import org.junit.jupiter.api.assertThrows
// Driver code
// Tests exception handling and the handshake routine, as well as encrypting/decrypting short message between the server and initiator contexts.
@Suppress("UNUSED_VARIABLE")
class TestUkey2Protocol {
@Test
fun testHandshake() {
val initiatorContext =
D2DHandshakeContext(D2DHandshakeContext.Role.INITIATOR)
assertFalse(initiatorContext.isHandshakeComplete)
val serverContext =
D2DHandshakeContext(D2DHandshakeContext.Role.RESPONDER)
assertFalse(serverContext.isHandshakeComplete)
assertDoesNotThrow {
serverContext.parseHandshakeMessage(initiatorContext.nextHandshakeMessage)
initiatorContext.parseHandshakeMessage(serverContext.nextHandshakeMessage)
serverContext.parseHandshakeMessage(initiatorContext.nextHandshakeMessage)
assertTrue(initiatorContext.isHandshakeComplete)
assertTrue(serverContext.isHandshakeComplete)
}
}
@Test
fun testSendReceiveMessage() {
val initiatorContext =
D2DHandshakeContext(D2DHandshakeContext.Role.INITIATOR)
val serverContext =
D2DHandshakeContext(D2DHandshakeContext.Role.RESPONDER)
assertDoesNotThrow {
serverContext.parseHandshakeMessage(initiatorContext.nextHandshakeMessage)
initiatorContext.parseHandshakeMessage(serverContext.nextHandshakeMessage)
serverContext.parseHandshakeMessage(initiatorContext.nextHandshakeMessage)
val connContext = initiatorContext.toConnectionContext()
val serverConnContext = serverContext.toConnectionContext()
val initialShareString = "Nearby sharing to server"
val encoded = connContext.encodeMessageToPeer(
initialShareString.toByteArray(
StandardCharsets.UTF_8
), null
)
val response =
String(serverConnContext.decodeMessageFromPeer(encoded, null), StandardCharsets.UTF_8)
assertEquals(response, initialShareString)
}
}
@Test
fun testSaveRestoreSession() {
val initiatorContext =
D2DHandshakeContext(D2DHandshakeContext.Role.INITIATOR)
val serverContext =
D2DHandshakeContext(D2DHandshakeContext.Role.RESPONDER)
assertDoesNotThrow {
serverContext.parseHandshakeMessage(initiatorContext.nextHandshakeMessage)
initiatorContext.parseHandshakeMessage(serverContext.nextHandshakeMessage)
serverContext.parseHandshakeMessage(initiatorContext.nextHandshakeMessage)
val connContext = initiatorContext.toConnectionContext()
val serverConnContext = serverContext.toConnectionContext()
val initiatorSavedSession = connContext.saveSession()
val restored = D2DConnectionContextV1.fromSavedSession(initiatorSavedSession)
assertArrayEquals(connContext.sessionUnique, restored.sessionUnique)
val initialShareString = "Nearby sharing to server"
val encoded = serverConnContext.encodeMessageToPeer(
initialShareString.toByteArray(
StandardCharsets.UTF_8
), null
)
val response = String(restored.decodeMessageFromPeer(encoded, null), StandardCharsets.UTF_8)
assertEquals(response, initialShareString)
}
}
@Test
fun testSaveRestoreBadSession() {
val initiatorContext =
D2DHandshakeContext(D2DHandshakeContext.Role.INITIATOR)
val serverContext =
D2DHandshakeContext(D2DHandshakeContext.Role.RESPONDER)
val deriveInitiatorSavedSession = {
assertDoesNotThrow {
serverContext.parseHandshakeMessage(initiatorContext.nextHandshakeMessage)
initiatorContext.parseHandshakeMessage(serverContext.nextHandshakeMessage)
serverContext.parseHandshakeMessage(initiatorContext.nextHandshakeMessage)
val connContext = initiatorContext.toConnectionContext()
val serverConnContext = serverContext.toConnectionContext()
connContext.saveSession()
}
}
assertThrows<SessionRestoreException> {
val unused = D2DConnectionContextV1.fromSavedSession(deriveInitiatorSavedSession().copyOfRange(0, 20))
}
}
@Test
fun tryReuseHandshakeContext() {
val initiatorContext =
D2DHandshakeContext(D2DHandshakeContext.Role.INITIATOR)
val serverContext =
D2DHandshakeContext(D2DHandshakeContext.Role.RESPONDER)
assertDoesNotThrow {
serverContext.parseHandshakeMessage(initiatorContext.nextHandshakeMessage)
initiatorContext.parseHandshakeMessage(serverContext.nextHandshakeMessage)
serverContext.parseHandshakeMessage(initiatorContext.nextHandshakeMessage)
val connContext = initiatorContext.toConnectionContext()
val serverConnContext = serverContext.toConnectionContext()
}
assertThrows<BadHandleException> {
val unused = serverContext.nextHandshakeMessage
}
}
@Test
fun testSendReceiveMessageWithAssociatedData() {
val initiatorContext =
D2DHandshakeContext(D2DHandshakeContext.Role.INITIATOR)
val serverContext =
D2DHandshakeContext(D2DHandshakeContext.Role.RESPONDER)
val associatedData = "Associated data.".toByteArray()
assertDoesNotThrow {
serverContext.parseHandshakeMessage(initiatorContext.nextHandshakeMessage)
initiatorContext.parseHandshakeMessage(serverContext.nextHandshakeMessage)
serverContext.parseHandshakeMessage(initiatorContext.nextHandshakeMessage)
val connContext = initiatorContext.toConnectionContext()
val serverConnContext = serverContext.toConnectionContext()
val initialShareString = "Nearby sharing to server"
val encoded = connContext.encodeMessageToPeer(
initialShareString.toByteArray(
StandardCharsets.UTF_8
), associatedData
)
val response =
String(serverConnContext.decodeMessageFromPeer(encoded, associatedData), StandardCharsets.UTF_8)
assertEquals(response, initialShareString)
}
}
@Test
fun testVerificationString() {
val initiatorContext =
D2DHandshakeContext(D2DHandshakeContext.Role.INITIATOR)
val serverContext =
D2DHandshakeContext(D2DHandshakeContext.Role.RESPONDER)
assertDoesNotThrow {
serverContext.parseHandshakeMessage(initiatorContext.nextHandshakeMessage)
initiatorContext.parseHandshakeMessage(serverContext.nextHandshakeMessage)
serverContext.parseHandshakeMessage(initiatorContext.nextHandshakeMessage)
}
assert(serverContext.isHandshakeComplete)
assert(initiatorContext.isHandshakeComplete)
assertArrayEquals(serverContext.getVerificationString(32), initiatorContext.getVerificationString(32))
}
}
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