X-Git-Url: http://www.git.cypherpunks.ru/?a=blobdiff_plain;f=gost28147%2Fmac.go;h=b49bc7d305f67f720f2cb0cfc2d37cc0bb3795c7;hb=0da4d634ac5368d024489baf4bdd5d422b84dd84;hp=bcfd52c5ed5044d5eee3f08524e5d5bd588e498b;hpb=c07494bbd559b9d00f391e28cfd070e18afe9900;p=gogost.git

diff --git a/gost28147/mac.go b/gost28147/mac.go
index bcfd52c..b49bc7d 100644
--- a/gost28147/mac.go
+++ b/gost28147/mac.go
@@ -42,10 +42,10 @@ type MAC struct {
 // following ones are fed to Write function.
 func (c *Cipher) NewMAC(size int, iv []byte) (*MAC, error) {
 	if size == 0 || size > 8 {
-		return nil, errors.New("Invalid tag size")
+		return nil, errors.New("gogost/gost28147: invalid tag size")
 	}
 	if len(iv) != BlockSize {
-		return nil, errors.New("iv length is not equal to blocksize")
+		return nil, errors.New("gogost/gost28147: len(iv) != 8")
 	}
 	m := MAC{c: c, size: size, iv: iv}
 	n2, n1 := block2nvs(iv)