diff --git a/MagickCore/cipher.c b/MagickCore/cipher.c
index f006526..314e83a 100644
--- a/MagickCore/cipher.c
+++ b/MagickCore/cipher.c
@@ -641,7 +641,7 @@
*/
quantum_type=GetQuantumType(image,exception);
pixels=GetQuantumPixels(quantum_info);
- image_view=AcquireCacheView(image);
+ image_view=AcquireAuthenticCacheView(image,exception);
for (y=0; y < (ssize_t) image->rows; y++)
{
register ssize_t
@@ -847,7 +847,7 @@
*/
quantum_type=GetQuantumType(image,exception);
pixels=GetQuantumPixels(quantum_info);
- image_view=AcquireCacheView(image);
+ image_view=AcquireAuthenticCacheView(image,exception);
for (y=0; y < (ssize_t) image->rows; y++)
{
register ssize_t