more tests!

test.js

@@ -8,6 +8,46 @@ var Alice_public = Nacl.util.encodeBase64(Alice.publicKey);
 var Bob = Nacl.box.keyPair();
 var Bob_public = Nacl.util.encodeBase64(Bob.publicKey);
 
+(function  () {
+var Curve = Crypto.Curve;
+
+// Basic one to one curve encryption used in CryptPad's chat
+
+// Alice and Bob can use their own private keys and the other's public key
+// to derive some shared values for their pairwise-encrypted channel
+// that includes a pre-computed secret key for curve encryption, a signing key, and a validate key
+
+// Alice derives the keys
+var Alice_set = Curve.deriveKeys(Bob_public, Nacl.util.encodeBase64(Alice.secretKey));
+
+// Bob does the same
+var Bob_set = Curve.deriveKeys(Alice_public, Nacl.util.encodeBase64(Bob.secretKey));
+
+['cryptKey', 'signKey', 'validateKey'].forEach(function (k) {
+    // these should all be strings
+    Assert.equal('string', typeof(Alice_set[k]));
+    Assert.equal('string', typeof(Bob_set[k]));
+
+    // and Alice and Bob should have exactly the same values
+    Assert.equal(Alice_set[k], Bob_set[k]);
+});
+
+var Alice_cryptor = Curve.createEncryptor(Alice_set);
+var Bob_cryptor = Curve.createEncryptor(Bob_set);
+
+// Now Alice should be able to send Bob a message
+
+var message = 'pewpewpew';
+
+var Alice_ciphertext = Alice_cryptor.encrypt(message);
+
+var Bob_plaintext = Bob_cryptor.decrypt(Alice_ciphertext);
+
+Assert.equal(message, Bob_plaintext);
+}());
+
+// Mailbox stuff
+
 /*
 (function () {
     // validate internal methods