diff --git a/lib/krb5/krb5_locl.h b/lib/krb5/krb5_locl.h
index 0d19595fe..ad087a073 100644
--- a/lib/krb5/krb5_locl.h
+++ b/lib/krb5/krb5_locl.h
@@ -95,6 +95,12 @@ krb5_create_checksum (krb5_context context,
 		      size_t len,
 		      Checksum *result);
 
+krb5_error_code
+krb5_verify_checksum (krb5_context context,
+		      void *ptr,
+		      size_t len,
+		      Checksum *sum);
+
 #define ALLOC(N, X) ((X*)malloc((N) * sizeof(X)))
 #define FREE(X) do{if(X)free(X);}while(0)