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Reverse encryption algorithm used in POST form

I have client native app (vc++), it is packed by themida. Each time this app client send POST form data to server, data is encrypted with random key. Here is 1 example

plain_text: hello

data after encrypted something like:

encrypted_text = 6NTkCAvY7NqYFz5lU1JjNQ==

EncKey = ZCj35hEvmxMOQPrzYzov8CsOpKJayFoRUoc98FGTnnkUi+YZW5pzNHXhCuvKKqq4RAATdn1qSsZ558i2cS2ClfvXvfb3OQEgBj9+GcdMMBasdKGYu88hxFfELkqWKxyZijY+UCVvE8KLv0+65nMzbvQ12OJGRhE1JJd1FCtW+qU=

(EncKey is random and always 172 characters).

I want to have algorithm to gen EncKey and algorythm to encrypt/decrypt data

code should be .NET or PHP

Skills: C# Programming, C++ Programming, Software Architecture

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About the Employer:
( 0 reviews ) Ho Chi Minh City, Vietnam

Project ID: #17825785

15 freelancers are bidding on average $1086 for this job

mingxiao2008

Hello , Dear How are you? I am very interested in your project and am ready for discussing with you about project. I have experienced in developing C# Programming, C++ Programming, Software Architecture. I will wo More

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(39 Reviews)
6.9
bianyunzhi95

Nice to meet you. I've read your project description carefully and I can do exactly what you want. I am a heavily experienced C/C++ developer with strong backgrounds in Algorithm and Data Structure. I also have lots More

$1000 USD in 30 days
(36 Reviews)
5.4
Artopix

Hi there, I can create a dll for you using c# where you can encrypt or decrypt the data and get the text. I am very much sure that the Algorithm is AES but I need to find the bit then I can create the same for you. So More

$833 USD in 20 days
(15 Reviews)
5.5
kipdev13

Hello, I am very interested encryption and decryption project. My major is mathematics and Cryptography. We can discuss about your project in chat. Thanks.

$1250 USD in 20 days
(35 Reviews)
5.1
schoudhary1553

Hello! This is Vibrant Webtech and I was glad to see that you're looking for help for project C# Programming, C++ Programming, Software Architecture. I've delivered more than 400 + projects in the last 5 years and More

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5.4
shiningdevelopor

Hello How are you I read your description carefully I have many good experiences in C++ and web developing So I can finish your project quickly and perfectly If you hire me, I will do my best and make you satisfie More

$1000 USD in 20 days
(8 Reviews)
4.7
malbui

Hi, I'm a reverse engineer with experience in packed software (Themida, VMProtect...). Can you share the software? Then I can check it and see how it works inside. The Key should be no random because the server need More

$1500 USD in 10 days
(7 Reviews)
4.7
aleemakhtar1

hi, I am security expert. working in security implementation on various levels. For your requirements here is my proposal: assymetric key exchange algo for key sharing encryption algo with shared key Code wi More

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(9 Reviews)
4.4
naishodayo

How are you today? I am very interested in your project. I am a super reverse engineering expert. If you contact me, we can discuss more in detail. Thank you.

$1250 USD in 20 days
(2 Reviews)
3.7
bengalTIGER1106

⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐ I read through the job details extremely carefully and I am absolutely sure that I can do the project very well. i have many experience in PHP, Vc++, encryption and decryption, algorithm development etc More

$1111 USD in 20 days
(3 Reviews)
3.1
squilla

So you want a system where you put encryption key and encrypted phrase and it will get you the original word/phrase?

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(7 Reviews)
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RiccardoSottini

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kb88313

Hello. I am reverse engineer and security developer. I can do something what you want asap. I want to work with you. Thanks.

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heruxie

Whats encryption methods? I can make json web token generator c#. Api traffic request response encrypted. You can see at my porfolios pictures.

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0.0