0.7.1 started. fixed secret key serialization excessive size for signing/verifying keys

src/commonMain/kotlin/net/sergeych/crypto2/SigningSecretKey.kt

@@ -30,6 +30,7 @@ class SigningSecretKey(
     override fun seal(message: UByteArray, expiresAt: Instant?): Seal =
         Seal.create(this, message, now(), expiresAt)
 
+    @Transient
     override val id: KeyId = verifyingKey.id
 
     override val label: String

src/commonTest/kotlin/KeysTest.kt

@@ -3,6 +3,8 @@ 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.BipackDecoder
+import net.sergeych.bipack.BipackEncoder
 import net.sergeych.crypto2.*
 import net.sergeych.tools.bipack
 import net.sergeych.tools.biunpack
@@ -390,4 +392,28 @@ class KeysTest {
         assertNull(Container.decrypt<String>(bytes, kr1))
         assertEquals(data, Container.decrypt<String>(bytes, kr2))
     }
+
+    @Test
+    fun testEncodedSizes() = runTest {
+        initCrypto()
+        val x = SigningSecretKey.new()
+//        println("key bytes: ${x.keyBytes.size}:\n${x.keyBytes.toDump()}")
+        val y = BipackEncoder.encode(x)
+//        println("packed: ${y.size}: ${y.toDump()}")
+        assertTrue { x.keyBytes.size + 5 > y.size }
+        assertEquals(x, BipackDecoder.decode<SigningSecretKey>(y))
+        assertContentEquals(x.keyBytes, BipackDecoder.decode<SigningSecretKey>(y).keyBytes)
+    }
+
+    @Test
+    fun testEncodedSizes2() = runTest {
+        initCrypto()
+        val x = SecretKey.new()
+//        println("key bytes: ${x.keyBytes.size}:\n${x.keyBytes.toDump()}")
+        val y = BipackEncoder.encode(x)
+//        println("packed: ${y.size}: ${y.toDump()}")
+        assertTrue { x.keyBytes.size + 5 > y.size }
+        assertEquals(x, BipackDecoder.decode<SecretKey>(y))
+        assertContentEquals(x.keyBytes, BipackDecoder.decode<SecretKey>(y).keyBytes)
+    }
 }