Help with JPEG Stego app?

[Lee Azzarello]

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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