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Encryption/Decryption function

$30-250 USD

In Progress
Posted about 10 years ago

$30-250 USD

Paid on delivery
I need two functions for encrypting and decrypting a string. The function format will be as follows: encryptedstring = encript(input,key); decryptedstring = decript(encriptedstring,key); In the two lines of code above, the input string and the decryptedstring must be the same as long as the value of key is the same for both the encrypt and decrypt file. input, key, encryptedstring and decryptedstring must all be of type wstring. A string encripted with the encript function must be recovered by using the decrypt function and the same key that was used to encrypt. If the wrong key is used, the wrong output will be generated without any error message. The method used for encryption must be secure and use a current/industry standard encryption algorithm. The project must be done using Visual Studio 2010. All source code must be supplied. The result must be able to be compiled without using any non free addons or libraries. A sample program must be supplied to test the functions.
Project ID: 5318518

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15 proposals
Remote project
Active 10 yrs ago

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15 freelancers are bidding on average $142 USD for this job
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Hello. I have done something similar in the past, maybe even exactly same: https://www.freelancer.com/projects/C-Programming-Software-Architecture/Decrypt-Encrypt-CString.html
$35 USD in 1 day
4.9 (1495 reviews)
7.8
7.8
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Hi, this is pretty easy task. I suggest using AES + BASE64 encoding for string representation. Both algos are approved by US government and widely used. Regards, Dmitry
$105 USD in 3 days
5.0 (50 reviews)
7.3
7.3
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HI Contact me for an efficient, well documented and perfect solution and development of your project. I ensure quality work with always on time delivery of project and dedicated support and follow up. Thanks Farah Saif
$53 USD in 1 day
5.0 (337 reviews)
6.9
6.9
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I am very proficient in c, c++. I have 15 years c++ developing experience now, and I have worked for 5 years. My work is online game developing, and mainly focus on server side, the lauguage is c++ under linux os. So, programming in c++ is never a problem. I used c++ to make many great projects, for example, I made the tools which can convert java files to c++ with the same meaning, of course garbage collection included. I made our own mobile game using c++, I even can show you the demo of client. Trust me, please let expert help you.
$111 USD in 0 day
4.9 (111 reviews)
6.9
6.9
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Hi, the project that I am currently working on is about encrypting the file system. I have those two function almost ready for you. The algo is AES-128 with CBC. This means your key will be 16 bytes long.
$35 USD in 1 day
4.9 (48 reviews)
5.5
5.5
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Hello, I am C++ developer, I can do your project as you request, just one question, Do you want console app, static library or dynamic library for it, or just the function? I think the function is something like this: string encript(input,key) { ..... return FinalString; } string decript(encriptedstring,key) { ..... return FinalString; }
$223 USD in 5 days
4.9 (18 reviews)
4.9
4.9
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Hi, I have done a similar project recently, you can check it in the following link: https://www.freelancer.com/projects/Software-Architecture-Excel/Design-implement-new-encryption.html So I guess I can complete your job quickly. Thanks.
$35 USD in 3 days
5.0 (4 reviews)
4.6
4.6
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Hi, I am a graduate in CS and working as a C++ programmer for 3+ years. My major was networking and security, also I am working in the same field. So I have implemented a good number of encryption/decryption algorithms both in course work and professional projects. I assure you of clean, efficient code with proper comment and documentation. thanks
$222 USD in 7 days
4.4 (24 reviews)
4.8
4.8
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A proposal has not yet been provided
$147 USD in 3 days
4.2 (6 reviews)
3.2
3.2
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Sir, I am well skilled c++ developer and I am ready to do the job using c++. I can use industry standard encryption and decryption algorithms for the function and can provide on time. Please share me details. I can start immedaitly. Thanks Rode
$88 USD in 3 days
5.0 (4 reviews)
2.7
2.7
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A proposal has not yet been provided
$166 USD in 3 days
5.0 (7 reviews)
2.9
2.9
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Hi, In my recent project I was using strong encryption algorithm like the one you are requesting. You choose how strong will it be, how big is the key, etc. Best regards, Mladen
$111 USD in 1 day
5.0 (1 review)
2.6
2.6

About the client

Flag of AUSTRALIA
Brisbane, Australia
5.0
6
Member since May 24, 2011

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