Re: [Qemu-devel] [PATCH v2 05/17] crypto: add support for anti-forensic split algorithm

[Daniel P. Berrange]

On Thu, Jan 21, 2016 at 04:37:28PM +0800, Fam Zheng wrote:
> 
> > +
> > +/**
> > + * qcrypto_afsplit_encode:
> > + * @hash: the hash algorithm to use for data expansion
> > + * @blocklen: the size of @in in bytes
> > + * @stripes: the number of times to expand @in in size
> > + * @in: the master key to be expanded in size
> > + * @out: preallocted buffer to hold the split key
> > + * @errp: pointer to a NULL-initialized error object
> > + *
> > + * Split the data in @in, which is @blocklen bytes in
> > + * size, to form a larger piece of data @out, which is
> > + * @blocklen * @stripes bytes in size.
> > + *
> > + * Returns: 0 on success, -1 on error;
> > + */
> > +int qcrypto_afsplit_encode(QCryptoHashAlgorithm hash,
> > +                           size_t blocklen,
> > +                           uint32_t stripes,
> > +                           const uint8_t *in,
> > +                           uint8_t *out,
> > +                           Error **errp);
> > +
> > +/**
> > + * qcrypto_afsplit_decode:
> > + * @hash: the hash algorithm to use for data compression
> > + * @blocklen: the size of @out in bytes
> > + * @stripes: the number of times to decrease @in in size
> > + * @in: the master key to be expanded in size
> > + * @out: preallocted buffer to hold the split key
> 
> I think the descriptions for @in and @out are wrong.

Yeah, got them the wrong way around

> 
> > + * @errp: pointer to a NULL-initialized error object
> > + *
> > + * Join the data in @in, which is @blocklen * @stripes
> > + * bytes in size, to form the original small piece o
> 
> piece of
> 
> > + * data @out, which is @blocklen bytes in size.
> > + *
> > + * Returns: 0 on success, -1 on error;
> > + */
> > +int qcrypto_afsplit_decode(QCryptoHashAlgorithm hash,
> > +                           size_t blocklen,
> > +                           uint32_t stripes,
> > +                           const uint8_t *in,
> > +                           uint8_t *out,
> > +                           Error **errp);
> > +
> > +#endif /* QCRYPTO_AFSPLIT_H__ */
> 
> Fam

Regards,
Daniel
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