Additional NKey Tests (#1154)

Author: scottf

src/test/java/io/nats/client/NKeyTests.java

@@ -15,9 +15,11 @@
 
 import org.junit.jupiter.api.Test;
 
+import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Paths;
+import java.security.GeneralSecurityException;
 import java.security.SecureRandom;
 import java.util.Arrays;
 import java.util.List;
@@ -587,12 +589,43 @@ public void testEquals() throws Exception {
     }
 
     @Test
-    public void testClear() throws Exception {
+    public void testClear() {
         assertThrows(IllegalArgumentException.class, () -> {
             NKey key = NKey.createServer(null);
             key.clear();
             key.getPrivateKey();
 
         }, "Invalid encoding");
     }
+
+    @Test
+    public void testPublicKeyFromSeed() throws Exception {
+        // using nsc generated seeds for testing
+        NKey pk = NKey.fromSeed("SOAELH6NJCEK4HST5644G4HK7TOAFZGRRJHNM4EUKUY7PPNDLIKO5IH4JM".toCharArray());
+        assertEquals("ODPWIBQJVIQ42462QAFI2RKJC4RZHCQSIVPRDDHWFCJAP52NRZK6Z2YC", new String(pk.getPublicKey()));
+
+        pk = NKey.fromSeed("SAANWFZ3JINNPERWT3ALE45U7GYT2ZDW6GJUIVPDKUF6GKAX6AISZJMAS4".toCharArray());
+        assertEquals("AATEJXG7UX4HFJ6ZPRTP22P6OYZER36YYD3GVBOVW7QHLU32P4QFFTZJ", new String(pk.getPublicKey()));
+
+        pk = NKey.fromSeed("SUAGDLNBWI2SGHDRYBHD63NH5FGZSVJUW2J7GAJZXWANQFLDW6G5SXZESU".toCharArray());
+        assertEquals("UBICBTHDKQRB4LIYA6BMIJ7EA2G7YS7FIWMMVKZJE6M3HS5IVCOLKDY2", new String(pk.getPublicKey()));
+    }
+
+    @Test
+    public void testFromPublicKey() throws Exception {
+        _testFromPublicKey("SUAHBVFYZF3DIEO4UIHIZMJICVLURLBM5JJPK7GSVGP2QUC3NZ323BRE6A", "UCM5BG6AAZSEGREBCLG7PG4GFQNJABSAVIXC6VWS7TDHZFPIYFVYHIDG");
+        _testFromPublicKey("SAADARCQJ3JA737Z443YNAZBNJNTFP7YNAF4QFUXKTBFBS4KAVK55DGSOQ", "AD2HQTUKOPBUGOPHA6KFRE6ZW5TH43D7P7E56OAQBZQLW2ECMNML6MVA");
+        _testFromPublicKey("SNAH645525YA4PNXHWWS46VNXXQTYAXOPKGHXYAHXZZ43XTDDG2ZQAX7LY", "NBZCD2OSMSDRVYCAI77HUN6A2WNDWNT2DMVVEW66DHNWCDXVOUWRCCK7");
+        _testFromPublicKey("SOAF5OP7UPK6XJCMNRYEJRET6YQSOE3FD4I4ERSN6WKHLYUC5AQDCOAFVY", "OA6SJACXYP2QGNLU4QYLJTVRVZPCZEEUNO2UQOVNGXYUPUJJHCVZIZQ2");
+        _testFromPublicKey("SCAP4LGVURDWVL37AZIM5O47UKANFI6FKBY77HMYF55CKW2XFKLNUBTTFE", "CAO36T42KFA2LMIZ6YHJKPQEJWT5ULYSV633FWBCEJ7MREZPHHC56BSC");
+    }
+
+    private static void _testFromPublicKey(String userEncodedSeed, String userEncodedPubKey) throws GeneralSecurityException, IOException {
+        NKey fromSeed = NKey.fromSeed(userEncodedSeed.toCharArray());
+        NKey fromKey = NKey.fromPublicKey(fromSeed.getPublicKey());
+
+        assertArrayEquals(fromSeed.getPublicKey(), fromKey.getPublicKey());
+        assertArrayEquals(userEncodedPubKey.toCharArray(), fromSeed.getPublicKey());
+        assertArrayEquals(userEncodedPubKey.toCharArray(), fromKey.getPublicKey());
+    }
 }