Universal keys. fixed bugs with keys serialization and equality

src/commonTest/kotlin/KeysTest.kt

@@ -3,6 +3,7 @@ import com.ionspin.kotlin.crypto.util.encodeToUByteArray
 import kotlinx.coroutines.test.runTest
 import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
+import net.sergeych.bipack.BipackEncoder
 import net.sergeych.crypto2.*
 import net.sergeych.utools.now
 import net.sergeych.utools.pack
@@ -153,6 +154,11 @@ class KeysTest {
             assertContentEquals(plain, m.decrypt(sk1))
         }
 
+        val x1 = BipackEncoder.encode(Asymmetric.createMessage(sk0, pk1, plain))
+        val x2 = BipackEncoder.encode(Asymmetric.createMessage(sk0, pk1, plain))
+
+        assertFalse { x1 contentEquals x2 }
+
     }
     @Test
     fun asymmetricKeySerializationTest() = runTest {