dumbwallet: better error messages for generating key

terrop · rustyrussell · commit a2548a2d94b5 · 2014-08-21T00:07:25.000+09:30
Running 'dumbwallet setup' on Fedora 21 gave me error
"Coud not generate key". The reason is that Fedora's
OpenSSL does not currently support secp256k1.

This patch fixes the above typo and explains the user
why the key generation failed.

Signed-off-by: Tero Roponen &lt;tero.roponen@gmail.com&gt;
Signed-off-by: Rusty Russell &lt;rusty@rustcorp.com.au&gt;
diff --git a/dumbwallet.c b/dumbwallet.c
@@ -68,8 +68,10 @@ static void create_wallet(const char *privkey)
 		EC_KEY_set_conv_form(priv, POINT_CONVERSION_COMPRESSED);
 	} else {
 		priv = EC_KEY_new_by_curve_name(NID_secp256k1);
+		if (!priv)
+			errx(1, "OpenSSL in use misses support for secp256k1");
 		if (EC_KEY_generate_key(priv) != 1)
-			errx(1, "Coud not generate key");
+			errx(1, "Could not generate key");
 	}
 	keystr = key_to_base58(NULL, true, priv, false);
 
