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C# ENCRYPTION AND DECRYPTION USING AES 256

$30-250 USD

In Progress
Posted over 6 years ago

$30-250 USD

Paid on delivery
We need to be able to match the attached java encryption algorithm in C#. The attached java files have AES 256 algorithm with some modifications. We need a C# algorithm with the same logic in the java files. To confirm that you have accomplished the task, you'll need to send us a corresponding C# code that you have written and subsequently provide a guide on how to generate sample cipher texts using the code. We shall then decrypt the cipher texts using the java files. POINTS TO NOTE: [login to view URL] 256 AES with some modifications. The magic is in the modification of the encryption.. [login to view URL] the server side we used a function that took into account the time of creation and some random things we inserted on the servers side. so it could only be replicated on that machine... private static byte[] getRawKey(byte[] seed) throws Exception { KeyGenerator kgen = [login to view URL]("AES"); SecureRandom sr = [login to view URL]("SHA1PRNG","Crypto"); [login to view URL](seed); [login to view URL](128, sr); // 192 and 256 bits may not be available SecretKey skey = [login to view URL](); byte[] raw = [login to view URL](); return raw; } 3. mostly there... its gets a key for the encryption using Secure Random instance
Project ID: 15664542

About the project

8 proposals
Remote project
Active 6 yrs ago

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Hello? I am very interesting in your project I have read your description carefully and i can do this in a short time with high quality Please contact me Let discuss more details together on chat I will try my best for you I will wait you Best regards
$100 USD in 3 days
4.9 (138 reviews)
7.1
7.1
8 freelancers are bidding on average $131 USD for this job
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i worked on 256 aes before too and i am good in java too Relevant Skills and Experience jaca, c, python Proposed Milestones $196 USD - 196
$196 USD in 4 days
5.0 (7 reviews)
5.3
5.3
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Hi, I can build corresponding C# version for your JAVA implementation. I have worked on encryption using AES in .Net and Android ( Java) both so i think i can do it very well. Relevant Skills and Experience ​I am ex-Microsoft employee and ​have 8+ years exp in ​​software development and customization using Microsoft technologies (​​C#,​VB.net ,​ ASP.NET, MVC,WPF, Sql Databases, Azure) and Android. Proposed Milestones $100 USD - fees ​ ​​Please visit my profile to see feedback from previous clients
$67 USD in 2 days
4.9 (32 reviews)
5.2
5.2
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Hello! I have read your project description carefully. I am really interested in your project as C# expert. Relevant Skills and Experience I have rich experiences in C#, .NET, WPF, AES 256 encryption and decryption, and so on. Please feel free to discuss with me Best Regards Proposed Milestones $150 USD - Excellent Result
$150 USD in 3 days
5.0 (10 reviews)
4.2
4.2
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I can help you with this. Message me . Relevant Skills and Experience more than 5 years experience in c# .net project development Proposed Milestones $250 USD - code
$250 USD in 1 day
5.0 (6 reviews)
3.8
3.8
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I've designed and written a lib for encryption and decryption in C#.I understand that in Java code you have a custom AES algorithm and that also need to be accommodated in the C# code. We can do that. Relevant Skills and Experience Experienced in image processing algorithms, architecture and written SWs in both conventional and modern paradigms using C, C++, C#, .NET framework, WPF, WCF, Telerik, Java, Win API, MFC, Algorithms. Proposed Milestones $222 USD - Analsyis, design, coding, and testing Please ping me and let us discuss your requirement. Thank you!
$222 USD in 3 days
5.0 (2 reviews)
1.0
1.0
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Hey ! I'm SAYAN PROGRAMMER I've reviewed your complete job description, and I fulfill all the qualifications required for this project. I always try to provide good quality work to my clients. I have more than 15 years of experience in this field. I have completed 200 projects with clients 100% satisfaction and I am sure if you will respond me then I will be able to explain my skills as well. My key skills are: Algorithm, C #, C + +, C programming ,JAVA, Software Development, Software Architecture, PHP, Java script and much more. Looking forward to work with you on this project. THANKS Regards SAYAN PROGRAMMER
$30 USD in 2 days
0.0 (0 reviews)
0.0
0.0

About the client

Flag of RWANDA
Midrand, Rwanda
4.9
17
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Member since Feb 17, 2014

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