From 99ab2db6ad3f79c4e3a7287f4c724d1c635ebd2f Mon Sep 17 00:00:00 2001
From: Ingo Franzki <ifranzki@linux.ibm.com>
Date: Thu, 25 Jul 2019 12:33:23 +0200
Subject: [PATCH] zkey: Fix auto-detection of clear key bitsize for XTS keys
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When 'zkey generate' is used with options '--clearkey <file>' and
'--xts', but without the '--keybits <bitsize>' option, then the
auto-detection of the bitsize of the specified clear key fails.

Signed-off-by: Ingo Franzki <ifranzki@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
---
 zkey/pkey.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/zkey/pkey.c b/zkey/pkey.c
index a88c4e90..046a2ba9 100644
--- a/zkey/pkey.c
+++ b/zkey/pkey.c
@@ -267,7 +267,7 @@ static u8 *read_clear_key(const char *keyfile, size_t keybits, bool xts,
 			return NULL;
 		}
 	} else {
-		keybits = DOUBLE_KEYSIZE_FOR_XTS(size * 8, xts);
+		keybits = HALF_KEYSIZE_FOR_XTS(size * 8, xts);
 	}
 
 	switch (keybits) {