From 866f75e49a3f1a83ad937acb6dd66f84fe422d8e Mon Sep 17 00:00:00 2001
From: weidai <weidai@57ff6487-cd31-0410-9ec3-f628ee90f5f0>
Date: Mon, 16 Apr 2007 00:34:13 +0000
Subject: rename STRUCTURED_IV to UNIQUE_IV. assert correct cipher direction

git-svn-id: svn://svn.code.sf.net/p/cryptopp/code/trunk/c5@311 57ff6487-cd31-0410-9ec3-f628ee90f5f0
---
 modes.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'modes.cpp')

diff --git a/modes.cpp b/modes.cpp
index 295fc34..b51afe9 100644
--- a/modes.cpp
+++ b/modes.cpp
@@ -61,6 +61,7 @@ inline void CTR_ModePolicy::ProcessMultipleBlocks(byte *output, const byte *inpu
 
 void CTR_ModePolicy::OperateKeystream(KeystreamOperation operation, byte *output, const byte *input, size_t iterationCount)
 {
+	assert(m_cipher->IsForwardTransformation());	// CTR mode needs the "encrypt" direction of the underlying block cipher, even to decrypt
 	unsigned int maxBlocks = m_cipher->OptimalNumberOfParallelBlocks();
 	if (maxBlocks == 1)
 	{
-- 
cgit v1.2.1