[Freedombox-discuss] the FreedomBox 'bump' challenge
On Tue, Jun 14, 2011 at 6:58 PM, anarcat <anarcat at anarcat.ath.cx> wrote:
> On Tue, Jun 14, 2011 at 02:49:19PM -0700, Stefano Maffulli wrote:
>> On Tue, 2011-06-14 at 15:46 -0400, anarcat wrote:
>> > I haven't been able to successfully store and read a complete public key
>> > material on a qrcode, so right now only the fingerprint is stored.
>>
>> What kind of problems did you have? Is it a matter of space or something
>> else?
>
> My attempts at encoding big blobs with the "qrcode" package available
> under Debian were unsuccessful. Either I could write the qrcode and not
> read it back again, or i could just not write it at all.
>
>> IIRC a vcard can store a complete gpg public key: have you tried
>> putting the key there? The advantage of using a vcard is that, once you
>> scan the qrcode you can get not just your contact's email and names, but
>> also SIP address, web url and other things. Plus you can easily store
>> them on the phone's addressbook.
>
> For me the problem is not a matter of format but of data size.
>
What about spliting data in 2 or 3 qrcodes? You read them in secuence
and then verify via checksum or something.
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