The following patch includes the necessary kernel configuration option.
--
Andreas Steinmetz SPAMmers use [email protected]
--- linux-2.6.11.2/kernel/power/Kconfig.ast 2005-04-10 20:44:48.000000000 +0200
+++ linux-2.6.11.2/kernel/power/Kconfig 2005-04-10 21:01:36.000000000 +0200
@@ -72,3 +72,14 @@
suspended image to. It will simply pick the first available swap
device.
+config SWSUSP_ENCRYPT
+ bool "Encrypt suspend image"
+ depends on SOFTWARE_SUSPEND && CRYPTO=y && (CRYPTO_AES=y || CRYPTO_AES_586=y)
+ default ""
+ ---help---
+ To prevent data gathering from swap after resume you can encrypt
+ the suspend image with a temporary key that is deleted on
+ resume.
+
+ Note that the temporary key is stored unencrypted on disk while the
+ system is suspended.
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