| 词条 | Draft:Aircrack Caesar Cipher using Baiji algorithm | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 释义 |
{{COI}}Aircrack Caesar Cipher using Baiji algorithmIntroduction: This algorithm breaks the cipher Text Written in English(only English language). This method was invented by Researcher Abdulwahab Mahdi Saleh.[1] This algorithm Called Baiji relative to his city. This algorithm reveals the key to Caesar's algorithm. Which can be decoded the cipher Text and get the plaintext . Because the known cryptographic algorithm is known. The key is secret. This method is not allowed to be named in another named.
inventor method Abdulwahab Mahdi Saleh Baiji Algorithm:1- Chose the letter that has the must frequency in cipher text. 2- Find the sequence of letter (letter from step 1) Start count letters sequence from 0 ->'a' to 25->'z' 3- The number of letter sequence from step 2 called x 4- Key=x-4 5- Using the caser algorithm to decryption the cipher text[2] Di=(Ci-Key)%26 where i is counter of text. Example1: if you have the following cipher text how you can get the plain text using Baiji algorithm (attack)?Cipher text: XLILSYWIMWRSAJSVWEPIJSVJSYVQMPPMSRHSPPEVWMXMWASVXLQDVILYVVCFIJSVIXLIWIPPIVVIGIMZIWQSVISJJIVWSOL:the letter that has the must frequency in cipher text = "I" =14 the sequence of letter:
the sequence of letter "I" is 8 --->X=8 Key=X-4 Key=8-4-->Key=4 Di=(Ci-Key)%26 D(X)=(23-4) %26 = 19--> T D(L)=(11-4)%26=7-->H D(I)=(8-4)%26=4--> E . . . D(W)=(22-4)%26=18--> S Plain Text:[3] The house is now for sale for four million dollars it is worth more hurry before the seller receives more offers Example2: if you have the following cipher text how you can get the plain text using Baiji algorithm (attack)?Cipher text[4]: UVACLYFZLJBYLSOL:the letter that has the must frequency in cipher text = "L" =3 the sequence of letter:
the sequence of letter "L" is 11 --->X=11 Key=X-4 Key=11-4--> Key=7 Di=(Ci-Key)%26 [5] D(U)=(20-7)%26=13--> N D(V)=(21-7)%26=14-->O D(A)=(0-7)%26=19-->T D(C)=(2-7)%26=21-->V D(L)=(11-7)%26=4-->E D(Y)=(24-7)%26=17-->R D(F)=(5-7)%26=24-->Y D(Z)=(25-7)%26=18-->S D(L)=(11-7)%26=4-->E D(J)=(9-7)%26=2-->C D(B)=(1-7)%26=20-->U D(Y)=(24-7)%26=17-->R D(L)=(11-7)%26=4-->E PlainText[6]: NOT VERY SECUREReferences1. ^{{Cite web|url=https://www.facebook.com/prog.abd|title=Abdulwahab Aljumaili|website=www.facebook.com|language=en|access-date=2019-02-11}} Category:Computer Security articles by qualityCategory:Computer scienceCategory:CryobiologyCategory:Cryptographic algorithms2. ^{{Cite book|url=http://cache3.pdfdrive.com/dl.php?id=18720918&h=10331c4d4f428e4a8649579dea520999&u=cache|title=Cryptography and Network Security Principles and Practices|last=Stallings|first=William|publisher=Prentice Hall|year=November 16, 2005|isbn=10: 0-13-187316-4|location=|pages=592}} 3. ^{{Citation|title=Plaintext|date=2018-09-20|url=https://en.wikipedia.org/w/index.php?title=Plaintext&oldid=860344378|work=Wikipedia|language=en|access-date=2019-02-11}} 4. ^{{Citation|title=Ciphertext|date=2019-01-24|url=https://en.wikipedia.org/w/index.php?title=Ciphertext&oldid=879925877|work=Wikipedia|language=en|access-date=2019-02-11}} 5. ^{{Citation|title=Caesar cipher|date=2019-01-17|url=https://en.wikipedia.org/w/index.php?title=Caesar_cipher&oldid=878872957|work=Wikipedia|language=en|access-date=2019-02-11}} 6. ^{{Citation|title=Plaintext|date=2018-09-20|url=https://en.wikipedia.org/w/index.php?title=Plaintext&oldid=860344378|work=Wikipedia|language=en|access-date=2019-02-11}} |
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