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I'm looking for an expert in Excel and RSA encryption to create a tool for me. The primary purpose of this tool is to encrypt and decrypt messages. Key Requirements: - Development of a form-based user interface within Excel for inputs and outputs. - Implementing RSA encryption within the tool. - Incorporate key generation functionality for RSA encryption. - Implement secure key storage for RSA private and public keys. - Add robust error handling to manage invalid inputs or decryption failures. - Allow users to export and import RSA keys. - Support different RSA encryption modes, such as OAEP. An example will be provided. Please have a strong command of Excel programming and RSA encryption before applying. The project should be completed within 1-2 days. Create an excel sheet that uses one time pad encryption to encrypted your full name. Using the following formulas · Lookup table Formula : =CODE(cell number)-65 · Convert text to decimal= =HLOOKUP( cell number, lookup table,2) · Random key generation o Using RAND function RANDBETWEEN(0,26) o Using VB script Function RNDINT(lowerbound As Integer, upperbound As Integer) As Integer Randomize RNDINT = Int(lowerbound + Rnd() * (upperbound - lowerbound + 1)) End Function · Encryption formula : MOD(key cell number+ decimal value for input text cell number,26) · Convert decimal to text formula: =LOOKUP(cell number, lookup table, lookup table first raw range)
Project ID: 38858245
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Active 1 yr ago
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6 freelancers are bidding on average $23 USD for this job

Top 1% in Freelancer.com Hi, Greetings! ✅checked your project details: ✅Completed Time: In project deadline We have worked on 900 + Projects. I have 6 + years of the experience in same kind of projects. If you are looking for a true Freelancer, I am the Right person for you. I am available almost 24-7 and am very responsive. I feel proud that I am a trusted Freelancer who pleases almost every single client. You can rest assure, your work will be delivered well in advance of others, with passion and accuracy. I guarantee you instant communication & responses when you need me. Why choose me? I think every client is the reason for my success. I only take projects which I am sure I can do quickly. My Portfolio Items: https://www.freelancer.com/u/schoudhary1553 I would really like to work with you on this project. If interested, Kindly contact me via chat for further details and discussion. Thank you Sandeep
$50 USD in 1 day
8.5
8.5

Dedicated Freelancer Ready to Elevate Your Project for Excel-Based RSA Encryption Tool Development. I have a solid background in Encryption and Excel, I bring valuable expertise to your project. I have successfully completed many projects with 100% client satisfaction. Clear and timely communication is my priority. I believe in keeping you informed throughout the project lifecycle. I am available for a discussion at your earliest convenience. Please feel free to contact me to further discuss your project details. Thank you for considering my bid. I am excited about the opportunity to contribute to the success of your project. Please visit my portfolio to check my previous work samples, here - https://www.freelancer.com/u/GraphicsHub2k24?page=portfolio&w=f&ngsw-bypass= Best regards, Muhammad Asim Khan
$10 USD in 1 day
3.8
3.8

Hi, We would like to grab this opportunity and will work till you get 100% satisfied with our work. We are an expert team which have many years of experience on Excel, Encryption Please come over chat and discuss your requirement in a detailed way. Thank You
$20 USD in 7 days
0.0
0.0

Hi, I'm Rahayu Ramadani. I'm interested in this job because I'm sure I can do it well. Thank you for your time. I hope I can join you, sir/madam. Thank you so much.
$20 USD in 7 days
0.0
0.0

I'm the best candidate for this data scraping job due to my strong technical skills, attention to detail, and ability to work independently. Proficient in web scraping tools and techniques, I have experience working with Excel. My analytical mindset and problem-solving skills enable me to navigate complex websites and extract accurate data. With a strong work ethic and reliability, I ensure timely delivery of high-quality results.
$20 USD in 7 days
0.0
0.0

Here is a refined and concise version of your bid proposal that meets the 100-character minimum requirement: Proposal for RSA Encryption Tool in Excel Dear Client, I am excited to propose creating your Excel-based RSA encryption and decryption tool. With expertise in Excel programming and cryptographic algorithms, I will deliver a secure, user-friendly solution meeting all specified requirements within 1-2 days. Key Features: Form-based UI for input and output. Robust RSA encryption and decryption functionality. Secure RSA key generation, storage, export, and import. Support for Optimal Asymmetric Encryption Padding (OAEP). Comprehensive error handling. Approach and Plan: Analyze requirements and design the user interface. Develop RSA encryption and decryption algorithms with VBA. Implement random key generation, following provided examples. Perform thorough testing and include error-handling mechanisms. Deliver a polished tool with a detailed user guide. Skills and Experience: Extensive experience with Excel VBA and cryptographic solutions. Proven ability to deliver secure and efficient tools within tight deadlines. Strong understanding of encryption mechanisms like RSA and OAEP. Timeline: 1-2 days. Budget: $25 USD. Thank you for the opportunity. I look forward to discussing how my expertise aligns with your needs. Best regards, Fanuel Musotsi
$20 USD in 7 days
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