PBKD with tests. Some improvements in keys listing

src/commonTest/kotlin/PBKDTest.kt

@@ -1,9 +1,36 @@
+import kotlinx.coroutines.test.runTest
+import net.sergeych.crypto2.PBKD
+import net.sergeych.crypto2.initCrypto
 import kotlin.test.Test
+import kotlin.test.assertEquals
 
 class PBKDTest {
 
     @Test
-    fun testDerive() {
+    fun testDerive() = runTest {
+        initCrypto()
+        val (k1, k2, k3) = PBKD.deriveMultipleKeys("foobar", 3)
+        PBKD.clearCache()
+        println(k1)
+        println(k2)
+        println(k3)
+//        println("------------------- Secret ket encryption!")
+//        val s = UniversalKey.newSecretKey()
+//        println(s)
+//        println(s.publicKey)
+//        println("------------------- public key signing")
+//        val i = UniversalKey.newSigningKey()
+//        println(i)
+//        println(i.verifyingKey)
+//        println("------------------- symmetric")
+//        println(UniversalKey.newSymmetricKey())
+        for( k in listOf(k1,k2,k3)) {
+            val i = k.id
+            val kx = i.kdp!!.deriveKey("foobar")
+            assertEquals(k, kx)
+            assertEquals(i, kx.id)
+            assertEquals(i.kdp, kx.id.kdp)
 
+        }
     }
 }