Re: [PATCH] Use kzfree in crypto API context initialization and key/ivhandling

[Rik van Riel]

Larry H. wrote:
> [PATCH] Use kzfree in crypto API context initialization and key/iv handling
>
> This patch replaces the kfree() calls within the crypto API (algorithms,
> key setup and handling, etc) with kzfree(), to enforce sanitization of
> the allocated memory.
>
> This prevents such information from persisting on memory and eventually
> leak to other kernel users or during coldboot attacks.
>
> This patch replaces kfree() for context (algorithm meta-data) structures
> too. Those are initialized or released once, and remain in use during the
> lifetime of the cipher/algorithm instance, therefore no performance impact
> exists for those specific changes.
>
> This patch doesn't affect fastpaths.
>
> Signed-off-by: Larry Highsmith <research@xxxxxxxxxxxxxx>

Acked-by: Rik van Riel <riel@xxxxxxxxxx>

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