Music as crypto medium
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From: Mok-Kong Shen on 12 Nov 2009 16:42 Mok-Kong Shen wrote: > [snip] > A bit OT: I presume that Pdf, ps, Latex etc. files could also be > modified to contain stego without too much difficulty. ....... There is a recent paper concerning stego with PDF files: I.-S. Lee, W.-H. Tsai, A new approach to covert communication via PDF files. Signal Processing, vol.90, Feb. 2010. (There is no typo above with '2010'. I had the hard copies of the Jan. and the Feb. 2010 issue of the journal in my hand.) M. K. Shen
From: Mok-Kong Shen on 18 Nov 2009 12:26 Milen Rangelov wrote: > MP3-based steganography must be a better idea :) For those interested in MP3: There is now a product MXP4, which seems to be technically an advancement over MP3. See http://mxp4.com/ M. K. Shen
From: Mok-Kong Shen on 27 Nov 2009 10:28 Mok-Kong Shen wrote: [snip] > It seems to me that stego with sound files may have advantages over > stego with image files. For with the modern camera techniques, > pictures have barely random defects and so modifications would be > subject to easier detection, while sound recordings (excepting ones > that are done in special studios for the production of commercial CDs) > contain in general always some ambient noise, which may render the > decision between presence of stego or non-presence rather difficult. I learned however that computer arts, in that no such comparisons can be done, each piece being originally created by the artist/user with (rather arbitrary) creativity, could apparently offer quite some advantages as carriers of stego, since they could easily adapt to external constraints, if required. [1] M. K. Shen ----------------------------------------------------------- [1] Some titles on computer arts: B. Wands, Art of the ditital age. Thomas & Hudson, 2003. C. Mason, Computer in the art room. JJG Publishing, 2008. K. Guminski, Kunst am Computer. Reimer Verlag, 2002. (Thesis, LMU) C. Kl�tsch, Computergraphik. Springer, 2007.
From: Spinner on 27 Nov 2009 14:15 Mok-Kong Shen <mok-kong.shen(a)t-online.de> wrote: >Mok-Kong Shen wrote: >[snip] >> It seems to me that stego with sound files may have advantages over >> stego with image files. For with the modern camera techniques, >> pictures have barely random defects and so modifications would be >> subject to easier detection, while sound recordings (excepting ones >> that are done in special studios for the production of commercial CDs) >> contain in general always some ambient noise, which may render the >> decision between presence of stego or non-presence rather difficult. > >I learned however that computer arts, in that no such comparisons >can be done, each piece being originally created by the artist/user >with (rather arbitrary) creativity, could apparently offer quite >some advantages as carriers of stego, since they could easily adapt >to external constraints, if required. [1] > >M. K. Shen > That's not even english. The words are, but nothing else is. I'm pretty sure our M. Shen is trolling again. -- 2+2!=5 even for extremely large values of 2
From: Mok-Kong Shen on 27 Nov 2009 17:46
Spinner wrote: > That's not even english. I suppose in a group that is not dedicated to discussions on languages one could be a little bit tolerant about foreigners' poor English (if one notes that 'english' is also not English). M. K. Shen |