X-Git-Url: http://www.git.cypherpunks.ru/?a=blobdiff_plain;f=gost3410%2Fcurve.go;h=696beabed9a68889675f9b96237a924fff30ea91;hb=c40d1e5634cf6d540d908a57423f4b504e39f186;hp=47f964b583a66bf9b735b73c671b0ca0e97873e3;hpb=c07494bbd559b9d00f391e28cfd070e18afe9900;p=gogost.git

diff --git a/gost3410/curve.go b/gost3410/curve.go
index 47f964b..696beab 100644
--- a/gost3410/curve.go
+++ b/gost3410/curve.go
@@ -1,5 +1,5 @@
 // GoGOST -- Pure Go GOST cryptographic functions library
-// Copyright (C) 2015-2019 Sergey Matveev <stargrave@stargrave.org>
+// Copyright (C) 2015-2020 Sergey Matveev <stargrave@stargrave.org>
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -79,7 +79,7 @@ func NewCurve(p, q, a, b, x, y, e, d *big.Int) (*Curve, error) {
 	r2.Mod(r2, c.P)
 	c.pos(r2)
 	if r1.Cmp(r2) != 0 {
-		return nil, errors.New("Invalid curve parameters")
+		return nil, errors.New("gogost/gost3410: invalid curve parameters")
 	}
 	if e != nil && d != nil {
 		c.E = e
@@ -131,7 +131,7 @@ func (c *Curve) add(p1x, p1y, p2x, p2y *big.Int) {
 
 func (c *Curve) Exp(degree, xS, yS *big.Int) (*big.Int, *big.Int, error) {
 	if degree.Cmp(zero) == 0 {
-		return nil, nil, errors.New("Bad degree value")
+		return nil, nil, errors.New("gogost/gost3410: zero degree value")
 	}
 	dg := big.NewInt(0).Sub(degree, bigInt1)
 	tx := big.NewInt(0).Set(xS)