X-Git-Url: http://www.git.cypherpunks.ru/?a=blobdiff_plain;f=src%2Fcypherpunks.ru%2Fgogost%2Fgost28147%2Fctr.go;h=19564f9ddb0595afee0aaa8d66ee730da618837c;hb=69e668f3499122e0b1140f3bd927de41ad279b94;hp=1008707862d32f7d0b7cc530b99d995122202f62;hpb=9be6f384bae8ebeabc129ede9f8a597de12835d3;p=gogost.git

diff --git a/src/cypherpunks.ru/gogost/gost28147/ctr.go b/src/cypherpunks.ru/gogost/gost28147/ctr.go
index 1008707..19564f9 100644
--- a/src/cypherpunks.ru/gogost/gost28147/ctr.go
+++ b/src/cypherpunks.ru/gogost/gost28147/ctr.go
@@ -22,8 +22,11 @@ type CTR struct {
 	n2 nv
 }
 
-func (c *Cipher) NewCTR(iv [BlockSize]byte) *CTR {
-	n1, n2 := block2nvs(iv[:])
+func (c *Cipher) NewCTR(iv []byte) *CTR {
+	if len(iv) != BlockSize {
+		panic("iv length is not equal to blocksize")
+	}
+	n1, n2 := block2nvs(iv)
 	n2, n1 = c.xcrypt(SeqEncrypt, n1, n2)
 	return &CTR{c, n1, n2}
 }