I am struggling with this message. Can someone break it?
TSRBROMEJYESKONLLUAKEDODBYYCTBIYLUYSODLBYKTSCNSAIIDLYNPENIOMTOAPSJMSYOEAULTNNEUOAEKJRKEMUODDKOYPNINRATDYINTEXXEOXSPEAXXLJXXXXS
It is probably transposition cipher and it can be in English, German, Slovak or Czech language. According to index of coincidence, it is probably Czech.
Thanks for any help
Related
I am searching for a simple code that encrypt a random number and letters with cipher shift. Example: -3 abcdefghijklmnopqrstuvwxyz output xyzabcdefghijklmnopqrstuvw
Be aware, that this is no encryption.
You are simply obfuscating the input. But this is being revealed quite easily.
Your question itself is very ambiguous. In what language do you want to look for? Please ask questions more specific.
Furthermore you could have look onto wikipedia:
https://en.wikipedia.org/wiki/Caesar_cipher
This is what you want to do. The code itself comes with the language.
Best,
Bent
I'm currently working a project where I use MARIE Assembly Language to create a version of Hamming code. My initial work has been to first have the user input the 8 bits for the data bits, and to then have the program output the correct 12-bit code word.
In order to find the correct values for the parity bits, I thought that the easiest way might be to load each data bit, which corresponds to a certain parity bit, and to count the number of 1s. However, I have yet to have found a way to have Marie count bits. I know there is no direct instruction to make Marie count bits, but does anyone have any advice on which instruction(s) might lead me towards an answer? I apologize in advance if clarity is lacking, and if it is please let me know so I can edit my question accordingly.
Hello everyone,
In one of projects I've found that data encrypts with algorithm I have never meet before. It converts input string to 10-symbol numeric string. It's definitely not one of popular hashes (md5, sha1, etc) or check sums (crc16, crc32, etc), I've checked all I known.
Example:
Input string: "davidc"; Output string: "2172453193".
Length of output string is fixed - 10 symbols. It contains only digits ("0123456789"). This is all details i can add =/
Maybe someone met something similar to that or maybe know algorithm - You'll economy lot of my time.
With love <3
I have heard about octal number system lately and i wanna learn about it.
My dumb teacher that i asked for it. Told me "its no more used, u dont need to learn" but no sire im pretty sure its still in use so i need to know!
If there is someone who can explain me the octal number system and show me a way to convert it to Decimal(number system that we use in life) "it would help me to learn about it a lot" and where i can use it in life so i can show smt to that dumb teacher that he is wrong, that he must do his job on teaching..
i wanna do it on vb6, cause my teacher works on vb6 usually.
You can get more about Octal from Wiki - http://en.wikipedia.org/wiki/Octal
The octal, or base 8, number system is a common system used with computers. Because of its relationship with the binary system, it is useful in programming some types of computers.
Decimal, hexadecimal, and octal representations are straightforward. To read a string in these formats, use CLng.
Dim value As Long
value = CLng(Text1.Text)
Hexadecimal strings should begin with &H and octal strings should begin with &O.
To convert a value into a decimal, hexadecimal, or octal string representation, use Format$, Hex$, and Oct$ respectively. For example, Oct$(256) returns the octal representation of the value 256 (which is "400").
Well I have been working on an assigment and it states:
A program has to be developed, and coded in C language, to decipher a document written
in Italian that is encoded using a secret key. The secret key is obtained as random
permutation of all the uppercase letters, lowercase letters, numbers and blank space. As
an example, let us consider the following two strings:
Plain: “ABCDEFGHIJKLMNOPQRSTUVXWYZabcdefghijklmnopqrstuvwxyz0123456789 ”
Code: “BZJ9y0KePWopxYkQlRjhzsaNTFAtM7H6S24fC5mcIgXbnLOq8Uid 3EDv1ruVGw”
The secret key modifies only letters, numbers, and spaces of the original document, while
the remaining characters are left unchanged. The document is stored in a text file whose
length is unknown.
The program has to read the document, find the secret key (which by definition is
unknown; the above table is just an example and it is not the key used for preparing the
sample files available on the web course) using a suitable decoding algorithm, and write
the decoded document to a new text file.
And I know that I have to upload an English dictionary into the program but I don't why it has been asked (may be not in that statement but I have to do THAT). My question is, while I can do that program using simple encryption/decryption algorithm then what's the use of uploading the English dictionary in our program? So is there any decryption algorithm that uses a dictionary to decrypt an encrypted algorithm? Or can somebody tell me what approach or algorithm should I use to solve that problem???
An early reply (and also authentic one) will be highly appreciated from you.
Thank you guys.
This is a simple substitution cipher. It can be broken using frequency analysis. The Wikipedia articles explain both concepts thoroughly. What you need to do is:
Find the statistical frequency of characters in Italian texts. If you can't find this published anywhere, you can build it yourself by analyzing a large corpus of Italian texts.
Analyze the frequency of characters in the cipher text, and match it to the statistical data.
The first Wikipedia article links to a set of tools that implement all of the above. You just need to use and possibly adapt it to your use case.
Your cipher is a substitution cipher. That is it substitutes one letter for another.
consider the cipher text
"yjr,1drv2ry1od1q1..."
We can use a dictionary to find the plaintext.
Find punctuation, since a space always follows a comma, you can find the substitution rule for spaces.
which gives you.
"yjr, drv2ry od q..."
Notice the word lengths. Since there only two 1 letter words in the english language the q is probably i or a. "yjr" is probably "why", "the", "how" etc.
We try why with the result
"why, dyv2yw od q..."
There are no english words with two y's, and end in w.
So we try "the" and get
"the, dev2et od q..."
We conclude that the is a likely answer.
Now we search our dictionary for words that start look like ?e??et.
rinse repeat.
That is, find some set of words which fit into the lengths available and do not break each others substitution rules.
Personally I just do the frequency analysis suggested above.
Frequency analysis, as both other respondents said, is the way to go, and you can use digrams and trigrams to make it much stronger. Just grab tons of Italian text from the web and churn ahead! It's really pretty simple programming.