Cryptography algorithms

$50-100 USD

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投稿日:

9年以上前

$50-100 USD

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Two cryptography algorithms DES(Not 3DES) and AES algorithms should be implemented in four modes Electronic Code Book(ECB), Cipher block Chaining(CBC),Output feedback mode(OFB), Counter Mode(CTR). Initially when executing program the user gives message from the command prompt [login to view URL] program should allow the user to select one of the two algorithms and after selecting it should ask for the mode. Then for the given input message it should give the Encrypted and decrypted message. Key is randomly generated by the program. Requirements: 1) No need of GUI. 2) InitializationVector(IV) is also randomly generated by program. 3) Cryptography related libraries can't used as the user need to change the S-BOX values

Java

Python

プロジェクト ID: 6515603

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9個の提案

リモートプロジェクト

アクティブ 10年前

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この仕事に9人のフリーランサーが、平均$86 USDで入札しています

@samitXI

Hi Sir, I am ready to work for you.I have 9 years of experience in C/C++, python , java, PHP and, MySQL. please see some of my works also check my reviews you will get better idea about my skill.I deliver quality work within time frame. Please visit my profile once. Thanks with regards, Amit

$105 USD 3日以内

4.9

(149 レビュー)

7.2

@jasqwerty

I can write a DES and AES encryption routine from scratch for you, and annotate important algorithm points like sboxes. Should have it done within a day or two.

$111 USD 1日以内

4.9

(33 レビュー)

5.3

@innovativementis

Hi, I'm interested. I can delivery in 3 days and I will fulfill all your requirement. Thanks, Howie

$83 USD 3日以内

5.0

(10 レビュー)

3.6

@jap2013

A proposal has not yet been provided

$100 USD 3日以内

5.0

(5 レビュー)

3.0

@titan6

Hi, I'm a very experienced developer. Studied high school for gifted students in math & university in computer science, I know what I should do. Just give me the job and get it done.

$50 USD 3日以内

5.0

(1 レビュー)

0.6

@Excellentlancer

Đề xuất vẫn chưa được gửi

$70 USD 3日以内

0.0

(0 レビュー)

1.6

@idlywadasambar

hello sir, I will be able to do the project in given time . Please do consider the bid. With regards, N L Ramachandrachudamani

$77 USD 3日以内

0.0

(0 レビュー)

0.0

@ahmedur

As a student of Information Technology I've completed full time course on Cryptography and Computer Security. I am also good at Python and Java/ I've already done similar works for my projects. So I think I am perfect for this job.

$55 USD 2日以内