[12000] in cryptography@c2.net mail archive
Re: Did you *really* zeroize that key?
daemon@ATHENA.MIT.EDU (Rich Salz)
Thu Nov 7 13:29:52 2002
Date: Wed, 6 Nov 2002 23:21:02 -0500 (EST)
From: Rich Salz <rsalz@datapower.com>
To: Marc Branchaud <marcnarc@rsasecurity.com>
Cc: "cryptography@wasabisystems.com" <cryptography@wasabisystems.com>
In-Reply-To: <3DC9A3D6.2010601@rsasecurity.com>
Probably moving out of the domain of the crypto list.
> volatile char *foo;
volatile, like const, is a storage-class modifier. As written, it
means a pointer to memory that is volatile; this means, in particular,
that you can't optimize away dereferences. If you wrote
char * volatile foo;
That means that foo itself is volatile, and you must fetch it from
memory whenever you want its value.
You might find the cdecl program useful...
; cdecl
Type `help' or `?' for help
cdecl> explain volatile void* vp
declare vp as pointer to volatile void
cdecl> explain void * volatile vp
declare vp as volatile pointer to void
cdecl> explain volatile void * volatile vp
declare vp as volatile pointer to volatile void
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