cosmetics on SigningKey

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

@@ -11,7 +11,7 @@ import net.sergeych.crypto2.SigningKey.Secret
  * Keys could be compared to each other for equality and used
  * as a Map keys (not sure about js).
  *
- * Use [Secret.pair] to create new keys.
+ * Use [pair] to create new keys.
  */
 @Serializable
 sealed class SigningKey {
@@ -63,13 +63,14 @@ sealed class SigningKey {
         fun seal(message: UByteArray): Seal = Seal(this.publicKey, sign(message))
         override fun toString(): String = "Sct:${super.toString()}"
 
-        companion object {
-            data class Pair(val signing: Secret, val aPublic: Public)
+    }
 
-            fun pair(): Pair {
-                val p = Signature.keypair()
-                return Pair(Secret(p.secretKey), Public(p.publicKey))
-            }
+    companion object {
+        data class Pair(val secretKey: Secret, val publicKey: Public)
+
+        fun pair(): Pair {
+            val p = Signature.keypair()
+            return Pair(Secret(p.secretKey), Public(p.publicKey))
         }
     }
 }