Security software program

已完成 已发布的 6 年前 货到付款
已完成 货到付款

I need you to develop some software for me. I would like this software to be developed for Windows . Create a program to encrypt and decrypt binary files using S-DES (Simplified DES) in the Cipher Block Chaining mode. The program takes the input of an initial key and an initial vector, reads the plaintext or ciphertext from a file, conducts the encryption or decryption, and writes the resulting ciphertext or plaintext into a second file. Input Format: The program should take a command in the following format. *(java) mycipher -m mode -k initial_key -i initial_vector -p plaintext_file -c ciphertext_file *mode: can be only encrypt or decrypt *initial_key: 10-bit initial key *initial_vector: 8-bit initial vector *plaintext_file: a binary (not text) file to store the plaintext cipher *text_file: a binary (not text) file to store the ciphertext Output Format: The program should print output in the following format. k1=subkey 1 k2=subkey 2 plaintext=all bytes of the plaintext separated by blanks, starting from the first byte ciphertext= all bytes of the ciphertext separated by blanks, starting from the first byte

C 编程 C++编程 密码学 Java

项目ID: #15381129

关于项目

10个方案 远程项目 活跃的6 年前

授予:

$133 USD 在3天内
(9条评论)
3.8

有10名威客正在参与此工作的竞标,均价$115/小时

liveexperts123

please ignore the bid amount we will discuss the price later in the chat after we have discussed the project thoroughly Relevant Skills and Experience: . Proposed Milestones: 190 - . Hi remy17! Please drop a message to 更多

$190 USD 在2天内
(48条评论)
6.8
hawkscodeaus

I have 7+ years in software design & development with very good experience. Relevant Skills and Experience I am good in C Programming, C++ Programming, Cryptography, Java Proposed Milestones $200 USD - Cost

$200 USD 在3天内
(3条评论)
5.6
sunbrek

You didn't mention C# as a possible solution, but if you are interested, your project can be easily implemented using C#. And if you are worried about cross platform, mono is a great solution. Relevant Skills and Expe 更多

$100 USD 在2天内
(13条评论)
5.8
freelancerkpis

We are happy to bid on this project. ***** We provides dedicate developers and Development and design services as well. ***** We are having a great team of Mobile developers with 7-8 years of expe Relevant Skills a 更多

$277 USD 在3天内
(5条评论)
3.2
michaelgevans

A proposal has not yet been provided

$45 USD 在2天内
(2条评论)
2.3
rizwanhamidkhan

Hi, I am intrested in your project and I would like to know more details. Kindly drop a message so we can discuss. I can provide you my work samples as well and that will be a confidence boosting initiative. Good Luck 更多

$40 USD 在5天内
(0条评论)
0.0
junaidmir527

Hi, I am interested in your project and I would like to know more details. Kindly drop a message so we can discuss. Good luck!

$55 USD 在3天内
(0条评论)
0.0
bikramkpanda

I have prior experience in developing java application for encryption using RSA logic. So I would be a suitable candidate for your requirement. Relevant Skills and Experience Java core and RSA implementation Proposed 更多

$55 USD 在5天内
(0条评论)
0.0