Help with JPEG Stego app?

[Romana Machado]

Awesome, thanks! Why was old school F5 chosen vs QIM or others? 

Romana Machado
310-940-7888


On Sep 2, 2013, at 12:38 PM, Lee Azzarello <lee at guardianproject.info> wrote:

> Pixelknot. Android stego app with source.
> 
> https://github.com/guardianproject/pixelknot
> 
> On Sep 2, 2013 2:45 PM, "Romana Machado" <romanafirst at gmail.com> wrote:
>> Here's the Javascript PGP library I've chosen. I expect the 128 bit setting will be sufficient. Comments welcome as always. 
>> 
>> http://crypto.stanford.edu/sjcl/
>> 
>> Romana Machado
>> 310-940-7888
>> 
>> 
>> On Sep 2, 2013, at 11:18 AM, Adam Back <adam at cypherspace.org> wrote:
>> 
>>> PGP stealth by Henry Hastur has the stego support for pgp2 formats and RSA. (Aside from stripping boiler plate Hal Finney had observed that you have to
>>> make sure the RSA encryption part doesnt narrow down which key it could be
>>> addressed to.  (A message m > user A's n public value could not be addressed
>>> to A (as m is computed mod n, it is always < n)).
>>> 
>>> Its C code, quite old and not really maintained but perhaps you could use it
>>> for comparison or ideas.
>>> 
>>> http://www.cypherspace.org/adam/stealth/
>>> 
>>> Adam
>>> 
>>> On Mon, Sep 02, 2013 at 11:04:05AM -0700, Romana Machado wrote:
>>>>  I've decided to upgrade my project, Stego, conceived as  an
>>>>  easy-to-use, near-universally available, maximally browser compliant,
>>>>  message PGP encrypted, steganography web app, to encode JPEGs, the most
>>>>  universal image format today (in cell phone cameras, and all over the
>>>>  web). Which means I have to decipher information-dense papers, pick a
>>>>  suitable algorithm, and code it up in client-side Javascript. Which
>>>>  greatly increases the workload, but I expect I'll be a better engineer
>>>>  for it. It also means that I'll be reusing none of the original code.
>>>>  Fortunately there are a few open source Javascript JPEG libraries. I'm
>>>>  writing to ask for help with picking the stego algorithm, hoping that
>>>>  someone here has a knowledgable opinion.
>>>>  Romana Machado
>>>>  310-940-7888
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