Re: About Guile crypto support

[Noah Lavine <noah.b.lavine@gmail.com>]

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Hello,

I was just thinking about this, and I was wondering, can you hash an
arbitrary Guile object? And if so, what do you hash? (I mean, algorithms
like SHA-1 are defined on sequences of bits, as I understand it. So what
collection of bits do you hash?) And is the hash recursive? (I.e. is it an
equal?-hash, an eqv?-hash, or an eq?-hash.)

If I understand the conversation correctly, the answer is yes, and that you
hash the bit representation that Guile uses internally, and it is an
equal?-hash. Is that accurate?

Thanks,
Noah


On Mon, Feb 4, 2013 at 9:43 PM, Nala Ginrut <nalaginrut@gmail.com> wrote:

> On Tue, 2013-02-05 at 00:03 +0100, Ludovic Courtès wrote:
> > Nala Ginrut <nalaginrut@gmail.com> skribis:
> >
> > > As mentioned in another thread about digest algorithm support in Guile,
> > > my plan is use part of implementation of libgcrypt and make a wrapper,
> > > then put into libguile.
> >
> > We probably don’t want Guile to depend on libgcrypt.
> >
>
> No, I didn't mean to use libgcrypt directly, I just suggested reuse part
> of libgcrypt code(only the common digest algorithm) and make wrapper,
> then put the C code in libguile.
>
> > So, instead, I’d suggest choosing the best of the 10 gcrypt FFI bindings
> > already mentioned ;-), and putting it in the guildhall.
> >
> > If you want to go further, you (or its authors) could submit it for
> > inclusion in libgcrypt proper.
> >
>
> The gcrypt-guile project is doing so, I'll help it if I can.
> But my original thought is orthogonal with gcrypt-guile, just put some
> common digest algorithm in libguile rather than a full-stack crypto-lib.
>
> My suggest opposed by many guys, since they don't think md5/sha are very
> common things. ;-)
> But I'm dealing with server & web framework development, so I need
> digest so much, and maybe it's no so common.
> I'll let this topic alone, till others found they have same
> requirements, or just forget about it. ;-D
>
> > Thanks,
> > Ludo’.
> >
> >
>
>
>
>

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