X-Git-Url: http://www.git.cypherpunks.ru/?a=blobdiff_plain;f=gost3410%2Fprivate_test.go;h=6045c1e683c4c7f408ad1b7f78de49117ac1d745;hb=b7f69d1826caacffd042ca8660aba41d0945de0f;hp=7b8e75af12aa8976a80424403bab589db032a60c;hpb=c07494bbd559b9d00f391e28cfd070e18afe9900;p=gogost.git

diff --git a/gost3410/private_test.go b/gost3410/private_test.go
index 7b8e75a..6045c1e 100644
--- a/gost3410/private_test.go
+++ b/gost3410/private_test.go
@@ -1,5 +1,5 @@
 // GoGOST -- Pure Go GOST cryptographic functions library
-// Copyright (C) 2015-2019 Sergey Matveev <stargrave@stargrave.org>
+// Copyright (C) 2015-2023 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
@@ -18,15 +18,75 @@ package gost3410
 import (
 	"crypto"
 	"crypto/rand"
+	"io"
 	"testing"
 )
 
 func TestSignerInterface(t *testing.T) {
-	prvRaw := make([]byte, int(Mode2001))
-	rand.Read(prvRaw)
-	prv, err := NewPrivateKey(CurveIdGostR34102001TestParamSet(), Mode2001, prvRaw)
+	c := CurveIdGostR34102001TestParamSet()
+	prvRaw := make([]byte, c.PointSize())
+	_, err := io.ReadFull(rand.Reader, prvRaw)
 	if err != nil {
-		t.FailNow()
+		t.Fatal(err)
+	}
+	prv, err := NewPrivateKey(c, prvRaw)
+	if err != nil {
+		t.Fatal(err)
 	}
 	var _ crypto.Signer = prv
+	var _ crypto.Signer = &PrivateKeyReverseDigest{prv}
+	var _ crypto.Signer = &PrivateKeyReverseDigestAndSignature{prv}
+}
+
+func TestSignerReverseDigest(t *testing.T) {
+	dgst := make([]byte, 32)
+	_, err := io.ReadFull(rand.Reader, dgst)
+	if err != nil {
+		t.Fatal(err)
+	}
+	prv0, err := GenPrivateKey(CurveIdGostR34102001TestParamSet(), rand.Reader)
+	if err != nil {
+		t.Fatal(err)
+	}
+	pub0 := prv0.Public().(*PublicKey)
+	sign, err := prv0.Sign(rand.Reader, dgst, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	valid, err := pub0.VerifyDigest(dgst, sign)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !valid {
+		t.FailNow()
+	}
+	var _ crypto.PublicKey = pub0
+
+	prv1 := PrivateKeyReverseDigest{prv0}
+	pub1 := PublicKeyReverseDigest{prv1.Public().(*PublicKey)}
+	sign, err = prv1.Sign(rand.Reader, dgst, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	valid, err = pub1.VerifyDigest(dgst, sign)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !valid {
+		t.FailNow()
+	}
+
+	prv2 := PrivateKeyReverseDigestAndSignature{prv0}
+	pub2 := PublicKeyReverseDigestAndSignature{prv2.Public().(*PublicKey)}
+	sign, err = prv2.Sign(rand.Reader, dgst, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	valid, err = pub2.VerifyDigest(dgst, sign)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !valid {
+		t.FailNow()
+	}
 }