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Thread ID: 86034	2007-12-31 23:21:00	Challenge to break my code	andrew93 (249)	PC World Chat

Post ID	Timestamp	Content	User
626374	2008-01-03 08:27:00	Doesn't work for me. More details? After you get the email "Ctrl+U" = View / Message source, will give you a view of the image in hex mode.	mikebartnz (21)
626375	2008-01-03 08:57:00	It's not hex. It's mime64/base64 encoding. If it was hex it would contain no symbols, no uppercase letters and no letters higher than 'f'. Not to mention that viewing it this way gets you nowhere.	Erayd (23)
626376	2008-01-03 09:07:00	Not to mention that viewing it this way gets you nowhere. Correct!	andrew93 (249)
626377	2008-01-03 09:14:00	Have a read of these pages. Should help a bit email.about.com email.about.com And from another site I came up with this lol. 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626378	2008-01-03 09:19:00	If you decode this to the original text without resorting to any illegal activities then I'll give you a thousand dollars: -----BEGIN PGP MESSAGE----- Version: GnuPG v1.4.6 (GNU/Linux) hQIOA/DgnQaY0i3TEAf+PWJmE/9GPHZMA8c95ZbJ4SPNE9DbODfoXoqX0C/l+kCy mvT+lyPx4+kHkSoQOdBBTRwUGB5cKzJdf7MVfYW9yalC6iHwtt SAyFjHWtfl3qDZ 6c+hZcb+97AHp4ssvn/VhyrGR9DEbjZJGDh0psYlj8SFit5t5NVzNhbcNm4cD6Cj OjZ/kpvX7c43UDMTZ+R5d/tcbJUxTZ5quY6z3qeSDluCnllhLsnV7ZnPosAdGPaJ pMswRYYYHsa1ZIg4A0jBIRLto1vgr2NY9lOuobEm79Du0bQy6G eneNwJDVqhHoT4 B5Eet0H6QusSSpg53fmdPKGf97Nqy+/wVRpyQUcTugf+Mf1XYhplUpRu7QWsdPVM QBG2KT+qwr2aaApKnmheG5kATk6zydZGNLJdLasUmnVOu9i6zh w/XmYy+cQYcGgz cH3gZwV5Ed8TfqP5cfMblZVMMuq0ht9GAiaR3XlIUf2Jkxl1LH kUaLycqLkcs3b3 NCkQF1g7o1F7xCf5pkQc5eFgvzzjoFpIsxg95aFFqpxmOMg7dY ZfI80OHEkCD1mu 21PpIcw7SFVh2PS9sBD61Kj7J5xJKcNlcXlW2PjBto8vzKcKN+ 5sQG1QbNTjxinV XU6CmaERONorMjZDNMUQQxXo6NhxxUVnptSqxaBxOrwBMw4IYw VV/nlY8ZMeGzSW vNKDAcxtUtukaXDCToFipK5w0rvRuqhnFKD0ZTbasjW7HSJvUI 0JyvXTgzWsGn0Q 4gDonaUIrz5CfYzKnbwDekkxLFFxP6mO1c/PwIftPAq4YSidkMsm7OpwcAGQnkB9 rv8dcZZZE58pyfN9hcMbq7DpkAhlqdvzd2V58nj8t/sCslBzQWU= =b2fE -----END PGP MESSAGE----- This is encrypted to my PGP key and is stored in an OpenPGP container (tools.ietf.org). All algorithms and encoding methods are publicly specified. The asymmetric cipher is 2048-bit ELG-E, the symmetric cipher is AES256 and the sequence begins "HelloHelloHelloHello", just to give you a bit of a start and a way to validate it. Here's my public key: -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.4.6 (GNU/Linux) mQGiBEdT19gRBAClsB22bHE9t27Ha2vIgx+/CbfRAn5bANg7riIB9A/fy19sxJ8D KAYYHZsXqSDWI0foTmYRUH/W7RUsqvP81YyBYDRwJhcH/l0tg3bWqr+W8YTiixmJ bB4esDmkEKzw9y+1yiBNRnmg12pyub5Xzyk0oSULePe6DYT6dV Mk9h4xPwCg9S45 vcggV+VHdJPGGt4d4OgeT70D/3WQSJc9oisVTt9Ipp+WIllP/ghW/SHcRdZQS7RN XkOJ72KtjE7b7yNpmU0D62Oxj/BP/BNbiI999i2jstlDO+zvOfSPiLr6dIkpDdX/ joUfbU3eI6a1RelCdxROI9f8oLT2SqeJUD3ZDwhb3JXldBdYiD 8OX68lq7Ctqv+M NPePA/43JBeauZM5RdtcA/pH94MqGfTa53oJpAoBXif2GlU1cKyIa6UTyJKTMsoA PHLQ2t4WsRYg3gTnTdxgQW21oblHmNj1KDfrGl42j4ciAFjpJP hc/smpXMZLolvO 9xY+GOPj754g/kXBXNr61YZdAcoD8yc2J/PMNJX8v2DFQco5oLQkVGltb3RoeSBH b2RkYXJkIDx0aW1AZ29kZGFyZC5uZXQubno+iGAEExECACAFAk dT19gCGyMGCwkI BwMCBBUCCAMEFgIDAQIeAQIXgAAKCRA5pp7atsj27J7rAJ450Q 1LdmL1rI98n7mA qaEyEajvRwCg6vFDZS7BRonLwVubvo2r6ao0dTWIRgQQEQIABg UCR1PYEAAKCRAj 8gTuj9lsdxRWAJ9zRKCuXdnrJJtygHSlMKJM+143ggCguxyZe2 1+Uwj/mq7nCZ/s ytBZg0C5Ag0ER1PX4RAIAJOF21mebDEHLmRzOKtM+m07UBThVY os8BuJ0FUSHgQu t9Nv8ZNseZCMgvG02iCOhWC9SbsqnS2X1VhTWuyjfnsGOJuOc+ BfXytq+K7Nj5gP gbkDNEjIU4AJiKb6MkVhRasvP5J8m3vhX6iWEyA8ZwQF2kZTLr hcPMWFQpsFs1+L nlKoK22nI/uuoFiUTn2ThnqZ+z3Cyv3dnGC2c1SaoN728v0DggO4YksXYAXU jzC/ dkJnl+r6HiJ4Dd56rLm4RnfQW8ajzNSBw9YvPS7ktAn/cq0bdmt0B7Mf882XEcFW NvQvlMQ8uzeoWzzp4PjUM4R/yBHg4KX8CFxzxIzx1W8AAwUH/RAfSGy9KrIbS7eZ TlP4G+DoTTP/zKJm+bcCpIZc7k1w3mUKQxxfMNdFQL90WCV7eMupruenSC/hNpOO fFKRgHrJqOMFSgafIO6zWsDk8Wd7hvDuI5La8GAjnZzytV0c9F uH2/dDG2tUd+Z7 lEgNVhGzAuwgXPLkDlTY/C0bwyKkzjEJoJ9d/91QN+eKf8DBAFUifodHmBOTV8Bp NreVxyK1eQKQZy5HoBGP2Sq5Xr5p+kPplEA91gEVX6tH4Ypxlt dN6Znzm1mKIGzk I65yNUhiPUYD2dvSLm7sPTBhdLNfzHqaslpGcqKUeXa/veaeQy6G1pQ1AX8oViP4 Wlb5CAOISQQYEQIACQUCR1PX4QIbDAAKCRA5pp7atsj27CxZAK CQovlt/h29WUvo pVnFJ+v0U7eyZQCeIqA1pKJdIzFq3iEiKA0ZbBvk300= =tKJo -----END PGP PUBLIC KEY BLOCK----- The point of this is that all modern cryptography must obey Kerckhoffs' principle. In other words, it must remain infeasible for the ciphertext to be decoded even when all pieces of the system but a single key are known to your opponent. Until your system meets these criteria I would be happy to offer you $0.00 for your IP. P.S. AES256 is cleared for US Military encryption of "TOP SECRET" information. You could get a lot better deal than my thousand by selling the technique to a foreign government. P.P.S I do realise that this is probably just for amusement. Giving people no clues, however, does not make for amusing hackery. P.P.P.S I'm adding a time limit of 10 years to this. You will also have to describe your method.	TGoddard (7263)
626379	2008-01-03 09:33:00	You will also have to describe your method.Bring on quantum computing... current PKI algorithms (of which PGP is one) rely on current computers being unable to factor large numbers in a timely fashion. I'm willing to bet that readily available computing power will outstrip current algorithms within the next decade :D.	Erayd (23)
626380	2008-01-03 10:08:00	Bring on quantum computing... current PKI algorithms (of which PGP is one) rely on current computers being unable to factor large numbers in a timely fashion. I'm willing to bet that readily available computing power will outstrip current algorithms within the next decade :D. I'm betting (literally) inflation will keep it not worth your time :D	TGoddard (7263)
626381	2008-01-03 10:25:00	The point of this is that all modern cryptography must obey Kerckhoffs' principle. In other words, it must remain infeasible for the ciphertext to be decoded even when all pieces of the system but a single key are known to your opponent. I agree the security of the encoded messages absolutely depend on the keys (as it does with my cipher) but Kerckhoffs principle doesn't mean one has to disclose the methodology. As I have stated, the process won't be released until I have a couple of legal IP issues resolved. I had expected to see the reactions seen so far, which is encouraging. P.P.S I do realise that this is probably just for amusement. Giving people no clues, however, does not make for amusing hackery. Quite the opposite. It is a genuine challenge with a genuine reward if it can be cracked. If it doesn't amuse or challenge you then, no offence taken or intended, but you don't have to participate. I expected to be inundated with 'show us your code' requests and as I have said this will come, given time. I will go one better and release a working version of the cipher, once I have the issue of a restricted export resolved. Andrew	andrew93 (249)
626382	2008-01-03 10:28:00	Bring on quantum computing... current PKI algorithms (of which PGP is one) rely on current computers being unable to factor large numbers in a timely fashion. I'm willing to bet that readily available computing power will outstrip current algorithms within the next decade :D. I agree completely. I have been working on how to break the PKI algorithms (albeit very slowly) and this cipher of mine is trying to get one step ahead of a) the break in public key security and b) quantum computing. I have written factorisation and prime number routines but I need to get them to work smarter to speed up the process....it may take a while. Andrew	andrew93 (249)
626383	2008-01-03 18:40:00	Realistically, to present someone with a image as you have, and give absolutaly no reference AT ALL as to how its encoded is going to make it difficult and make people who know the logistics of it simply not bother even trying, you provide a little bit of information about how the cipher itself is encrypted, but nothing at all about the image representation of it - ive had a little play, but without knowing even for a start in which order one should try and derive values(eg, left to right, 1 line at a time, or top to bottem) from the pixels its just silly, any real cipher challange you are usually provided with atleast ciphertext.. For example one could do something as simple as output charactor values straight to pixels with some padding and simply mirror/flip..change the hue, invert the colors, write the pixels out in some random positioning and even that'd take 6 months for you to even scratch the surface lawl - ESPECIALLY when you dont know what the heck the output is ment be :) So perhaps supply the ciphertext derived from the image, but NOT the solution, then one can work on trying to produce the ciphertext from the image, then work on decoding the 'unbreakable' ciphertext.	ELiTeHaYDeN (13237)
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