Can You Break The Unbreakabe?

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Can You Break The Unbreakabe?; The best cipher of mine....
Topic Started: Mar 30 2008, 02:09 PM (280 Views)
Paarth Dave	Mar 30 2008, 02:09 PM Post #1
Advanced Member Posts: 70 Group: Members Member #2,712 Joined: March 26, 2008	This cipher has all in it - alphabets, numbers & symbols....Let's see if anyone can break it... :II<<:<>I:I:I<>>:>><:<<<>:>>>:I>>><:>><<I:>>I No hints for this one....
	Cryptography Vanquished....


jdege	Mar 30 2008, 07:10 PM Post #2
Elite member Posts: 263 Group: Admin Member #246 Joined: December 7, 2006	Paarth Dave Mar 30 2008, 08:09 AM This cipher has all in it - alphabets, numbers & symbols....Let's see if anyone can break it... :II<<:<>I:I:I<>>:>><:<<<>:>>>:I>>><:>><<I:>>I No hints for this one.... According to Kerckhoff's Principle, a cryptosystem that works is one about which everything except for the key can be known, without jeopardizing its security. In other words, Security through obscurity isn't. If you want us to evaluate a new cipher, describe in detail how it works. Provide us with samples - plaintext+key+ciphertext, so we can test our understanding of how the system works. Then provide us with a dozen or so samples of plaintext+ciphertext, encrypted with the same key, so we can see if we can recover said key. If you don't trust your system sufficiently to offer it up to a known-plaintext challenge, you clearly don't trust it very much.
	When cryptography is outlawed, bayl bhgynjf jvyy unir cevinpl.


Paarth Dave	Apr 1 2008, 01:39 PM Post #3
Advanced Member Posts: 70 Group: Members Member #2,712 Joined: March 26, 2008	This cipher is first made into a 6*6 grid including all alphabets and numbers from 0-9..... 5 4 1 6 3 2 - These numbers are arranged alphabetically 1 e d a f c b - Let's put a in 1, b in 2, c in 3..... 2 n o r m p q - The III set is arranged from 6-1 3 3 2 y 4 1 z The V set is again arranged from 1 - 6 4 6 7 0 5 8 9 The IV set is arranged from 6-1 5 t u x s v w - The IV set is similar to that of the III 6 k j g l i h - The II set from downwards..... Hence, if I want to convert a plaintext to ciphertext, it will be as follows:- Plaintext:- SMILE Converting it into numbers through their locations: 56 26 63 66 15 Now, taking alternate digits, reverse them.... 56 -> 65 26 remains same 63 -> 36 66 remains same 15 -> 51 Hence the modified digits will be... 65 26 36 66 51 Now reverse the whole order.... 15 66 63 62 56 I will explain the symbols part in my next post....
	Cryptography Vanquished....


jdege	Apr 1 2008, 03:01 PM Post #4
Elite member Posts: 263 Group: Admin Member #246 Joined: December 7, 2006	Paarth Dave Apr 1 2008, 07:39 AM This cipher is first made into a 6*6 grid including all alphabets and numbers from 0-9..... The 6x6 grid is usually called a Polybius square, after the ancient Greek historian who first described it. There have been many ciphers over the years that have used these. The most historically significant may be the WWI German ADFGVX cipher, which used a 6x6 Polybius square, followed by a transposition. A couple of points: 1. The system as you describe it has only a single square. Most of these systems relied on some sort of keyword shuffle of the alphabet to populate the square. It's easier to remember a keyword than a complete alphabet. 2. If you're shuffling the contents of the square, you get no additional benefit from shuffling the indices. 3. Swapping the indices within each pair gains you nothing. Swapping the indices in every other pair does gain you some. But swapping indices between pairs gives you a fractionated transposition, which makes things considerably more difficult. Are you familiar with the bifid cipher? It's the simplest of the fractionating transpositions: Wikipedia - Bifid cipher American Cryptogram Association - Bifid Cipher Try to visualize how you'd break it. And recognize - it can be broken. All of the ACA ciphers can be broken by dedicated amateurs. It's what the ACA is and what the ACA does.
	When cryptography is outlawed, bayl bhgynjf jvyy unir cevinpl.


Paarth Dave	Apr 2 2008, 07:45 AM Post #5
Advanced Member Posts: 70 Group: Members Member #2,712 Joined: March 26, 2008	Mr. jdege, What you have said is completely correct....I value your suggestions a lot... Had my example been a huge sentence, the swapping of the indices would have made some difference..... Anyways, i'll explain the symbols part to you all.... I have taken only 3 symbols for my convenience.. They are '>','<' and 'I' So let's convert the numbers into symbols.... The numerical text was 15 66 63 62 56 Let's take the first number i.e 15 15 is 1 & 5 Thus 1 can be represented as > < or I 5 can be represented as >>>>> <<<<< or IIIII This is very long so I have introduced dots in it.. Hence, 5 -> >>>>> or :>:>> where dots precede the symbol and indicate the number of times the symbol occurs... Therefore, 15 is represented as I:>:>> So the conversion of all numbers into symbols will be as follows: I:>:>><:<:<<II:I:I>:>:>><:<IIII:I:<>>:>>I:I:II A change in symbol indicates a change in the number as well.... I hope you all liked my new cipher... Now, let's see if you can solve the ciphertext which I posted earlier... When you decrypt it, you will get the name of my cipher.....
	Cryptography Vanquished....


jdege	Apr 2 2008, 12:23 PM Post #6
Elite member Posts: 263 Group: Admin Member #246 Joined: December 7, 2006	Paarth Dave Apr 2 2008, 01:45 AM Now, let's see if you can solve the ciphertext which I posted earlier... When you decrypt it, you will get the name of my cipher..... :) :) Odd symbols can be fun to play with, sometimes, but they don't add to security in any way. Have you tried to decrypt this yourself? I get "crypuxer", which may be a name, or may be simply an transcription error somewhere in the process.
	When cryptography is outlawed, bayl bhgynjf jvyy unir cevinpl.


Paarth Dave	Apr 3 2008, 06:56 AM Post #7
Advanced Member Posts: 70 Group: Members Member #2,712 Joined: March 26, 2008	It's not an error.... The actual word is "Cryptex2" Try again, buddy....you may get it... And do tell me ..how do you get that text in white??? I tried but of no use....Please tell me..
	Cryptography Vanquished....


jdege	Apr 3 2008, 12:16 PM Post #8
Elite member Posts: 263 Group: Admin Member #246 Joined: December 7, 2006	Paarth Dave Apr 3 2008, 12:56 AM And do tell me ..how do you get that text in white??? I tried but of no use....Please tell me.. Yep. My fault, got some numbers transposed in decrypting. As for colors, colors are marked off by the color tag. You can either use the color dropdown, then edit the color to change it to white, or you can enter the BBCode tag directly: Code: `[COLOR=white]This is white[/COLOR]`
	When cryptography is outlawed, bayl bhgynjf jvyy unir cevinpl.


Paarth Dave	Apr 4 2008, 06:26 AM Post #9
Advanced Member Posts: 70 Group: Members Member #2,712 Joined: March 26, 2008	Thanks a lot...... Does it work???
	Cryptography Vanquished....


Paarth Dave	Apr 4 2008, 06:27 AM Post #10
Advanced Member Posts: 70 Group: Members Member #2,712 Joined: March 26, 2008	Yeah it does.....Thanks a million, bro
	Cryptography Vanquished....


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