cyber security

Part 1

• Input

– A given text file for plaintext or ciphertext (assume only 26 letters, no special

characters, numbers and punctuations)

– 3 substitution ciphers, M1,M2,M3

• M1 – left shift 3 letters

• M2 – Plain: a b c d e f g h i j k l m n o p q r s t u v w x y z

Cipher: D K V Q F I B J W P E S C X H T M Y A U O L R G Z N

• M3 – right shift 5 letters

– cycling pattern

• n=3: M1,M3,M2,M3; M1,M3,M2,M3;

• Output

– Encrypted ciphertext or decrypted plaintext

Part 2

• Input

– A given text file for plaintext or ciphertext

– A given depth of rail fence

• Output

– Encrypted ciphertext or decrypted plaintext

Encryption and Decryption using Polyalphabetic Ciphers by using C++ programming language:

Taidot: C-ohjelmointi, C++ -ohjelmointi, Tietoturva, Salaustekniikat

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Tietoa työnantajasta:
( 0 arvostelua ) United States

Projektin tunnus: #17166571

14 freelanceria on tarjonnut keskimäärin %project_bid_stats_avg_sub_26% %project_currencyDetails_sign_sub_27% tähän työhön


Hi, i can easily do both parts.

$50 USD 1 päivässä
(325 arvostelua)

I am very proficient in c and c++. I have 16 years c++ developing experience now, and have worked for more than 7 years. My work is online game developing, and mainly focus on server side, using c++ under Linux environ Lisää

$100 USD 1 päivässä
(132 arvostelua)
$50 USD 3 päivässä
(83 arvostelua)

Hi! I'm interesting your project very well. I am a full time devloper. I am mastering c++ and I'm a good Mathematician. And also I have many experience and good skill about algorithm development. Let's go ahead w Lisää

$30 USD 1 päivässä
(61 arvostelua)

I have ~7 years of experience in C++ and over 3 in C#. I also write some Python code and recently Haskell, so the task will not be a problem for me. I have experience with ciphers from your description. Please see: Lisää

$30 USD 2 päivässä
(15 arvostelua)

I am a software developer by profession. I mainly work on c++.i can handle this project. Looking forward for a positive reply

$25 USD 1 päivässä
(1 arvostelu)

hello sir/mam your project can be done within 6 to 7hrs, I hope to see you in inbox. kind regards, Niraj. thank you

$25 USD 1 päivässä
(0 arvostelua)

i can do this in either c or using python programming but i cant in c++ since i do not know the basics of c++ ,i guarantee that i can do this work in either c or python for sure give a try with me ,i am a beginner and Lisää

$40 USD 1 päivässä
(0 arvostelua)

hey sir i'm good in c and c++ under windows and lunix and also good in math an cryptography i can easily do both parts. when i complete your project you can check and accept me message me to start

$30 USD 1 päivässä
(0 arvostelua)

I have done many crypto projects in the past in my bachelor. Please don't hesitate to ask me if you are interesting and provide me full details on what you need me to do, because I think something missing from your des Lisää

$88 USD 2 päivässä
(0 arvostelua)
$31 USD 15 päivässä
(0 arvostelua)

Over 8 years of software development experience across various domains. Primary skills include C/C++ on Windows as well as Linux platform. Good at shell scripting. Expert in debugging.

$25 USD 1 päivässä
(0 arvostelua)

Can be easily done with a command line program. C++, did this stuff in my intro to programming class.

$20 USD 1 päivässä
(0 arvostelua)

Hi I can do this work in best minimal charges.I did bachelors in computer sciences.I recently took this course of networks security and [login to view URL] I am also expert in C++.Thanks

$20 USD 2 päivässä
(0 arvostelua)