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Encryption of different file formats excluding its metadata

We want to develop a project where Freelancer will have to provide dll in C# or C++.

Project information:

We want to encrypt and decrypt different file formats like DOC, DOCX, XLS,XLSX, PPT,PPTX, PDF,

EXE, DLL, JPG, JPEG,PNG,TXT,DWG. When we encrypt except metadata all the other data will be encrypted. However metadata should not be [login to view URL] has to be AES128 or AES256 We need access to metadata even after encryption.

Freelancers who have handled or have knowledge of metadata structure of different file formats can easily do this project.

Kindly note that there will be two milestones.

1) Successful delivery of working dll

2) Transfer of source code

Skills: .NET, C# Programming, C++ Programming

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About the Employer:
( 4 reviews ) Pune, India

Project ID: #17428037

12 freelancers are bidding on average $187 for this job

lillysoft

i can do this i have experience of file encryption

$222 USD in 5 days
(25 Reviews)
5.4
$150 USD in 3 days
(23 Reviews)
5.0
itoasis1

Hi. I have review your project description. I have full experiences in C#/C Development. I am very interested in your project and also ready to start work immediately. Hoping for your soon Reply. Thank You Regard.

$250 USD in 3 days
(19 Reviews)
4.5
$155 USD in 3 days
(12 Reviews)
3.3
waseemsaleemg

Surely, I've given expertise. I'm Microsoft Certified Professional, Senior Software Engineer and Microsoft Certified Trainer with over five Years of Experience. Skills: ASP.NET Core (MVC 6), MVC 5, WCF, N-Tier More

$222 USD in 3 days
(2 Reviews)
2.6
MzHashmi

Hi Respected sir , This is Sumair Hashmi, masters in computer science from NUST. more than 7y Experience in this field. i have done lots of mobile development and web development and i will be happy to hear and wor More

$155 USD in 3 days
(5 Reviews)
2.6
swappitweb

We are a web developing and designing company with various other facilities such as web content and digital marketing related to all types of specializations. Additional considerations and implementations are assisted More

$250 USD in 5 days
(1 Review)
0.7
$277 USD in 3 days
(0 Reviews)
0.0
creativesoft7

Dear Prospect Hiring Manager. Thank you for giving me a chance to bid on your project. i am a serious bidder here and i have already worked on a similar project before and can deliver as u have mentioned I have More

$155 USD in 3 days
(0 Reviews)
0.0
$200 USD in 7 days
(0 Reviews)
0.0
TheLexAllyson

Hello there, I have already made a file encrption program for windows desktop PCs called "Wi9Crpyt0r". I will be using the same code mechanism providing not just AES(128, 256) but also other encryption algorithms. More

$111 USD in 4 days
(0 Reviews)
0.0
$100 USD in 5 days
(0 Reviews)
0.0