Slightly refactored error messages

[gogost.git] / gost3410 / vko2001.go

diff --git a/gost3410/vko2001.go b/gost3410/vko2001.go
index 6d8fbf67d8d17c5be920601783e09198c641ffdb..fd944b17c8cbb90ed03bf974ae0a437cc8b987fa 100644 (file)
--- a/gost3410/vko2001.go
+++ b/gost3410/vko2001.go
@@ -17,6 +17,7 @@ package gost3410
 
 import (
        "errors"
+       "fmt"
        "math/big"
 
        "go.cypherpunks.ru/gogost/v5/gost28147"
@@ -31,11 +32,11 @@ func (prv *PrivateKey) KEK2001(pub *PublicKey, ukm *big.Int) ([]byte, error) {
        }
        key, err := prv.KEK(pub, ukm)
        if err != nil {
-               return nil, err
+               return nil, fmt.Errorf("gogost/gost3410.PrivateKey.KEK2001: %w", err)
        }
        h := gost341194.New(&gost28147.SboxIdGostR341194CryptoProParamSet)
        if _, err = h.Write(key); err != nil {
-               return nil, err
+               return nil, fmt.Errorf("gogost/gost3410.PrivateKey.KEK2001: %w", err)
        }
        return h.Sum(key[:0]), nil
 }