Encryption Algorithm

I need to create a encryption algorithm for a project I am working on, below are the requirements:

Cannot use any commercially avaliable standard encryption algorithm. This algorithm doesn't need to be anymore secure than commercially avaliable ones. So DES, AES, RSA etc CANNOT be used.

Must generate a key (or key pair) values from a password, this password will be between 10 and 40 characters long. This key must be used to encrypt and decrypt files.

Software should be invoked from a command line with the following options:

-e Encrypt File

-d Decrypt File

The encryption itself must a product cipher using substitution and permutation, the types used are at your discretion to create an algorithm that is secure.

ANY language can be used as long as the final program can be used from an executable file.

code must be fully commented to ensure it can be understood by others. I also require a user guide on how to use the program, a document justifying the methods used and why and a code design diagram.

Feel free to contact me if you have any questions.

Habilidades: Programação C, Programação C#, Programação C++ , Java, Python

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Acerca do Empregador:
( 1 comentário ) Crewe, United Kingdom

ID do Projeto: #6818780

26 freelancers are bidding on average £165 for this job


Hello I am Java and C++ expert and interested in this project. I have reviewed your requirements and confident to handle this project. Please communicate to discuss further. Regards Anshu

£125 GBP in 3 dias
(378 Comentários)

10+ years experience. 600+ projects completed successfully. I am very interested in the assignment. Ready to start ASAP.

£52 GBP in 3 dias
(377 Comentários)

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£157 GBP in 3 dias
(32 Comentários)

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£210 GBP in 3 dias
(52 Comentários)

A proposal has not yet been provided

£247 GBP in 5 dias
(10 Comentários)

Hi, would you be interested in using Blowfish and/or XTEA? (i have an idea about multiple rounds of encryption). I will be using C#.

£110 GBP em 1 dia
(17 Comentários)

Hi sir, I will use RC4 algorithm , I look forward to work for you and I will do my best . Thank you .

£55 GBP em 1 dia
(9 Comentários)

I'm a Java expert and familiar with encryption/decryption. I'm a Java expert and familiar with encryption/decryption.

£100 GBP in 3 dias
(28 Comentários)

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£222 GBP in 3 dias
(8 Comentários)

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£100 GBP in 3 dias
(11 Comentários)

I have MS in Information Security with research interest of Cryptography. I have implemented Cryptography algorithms in Java and C, written security solutions in J2EE and Java, have implemented datastructures in Ja Mais

£526 GBP in 20 dias
(5 Comentários)

Hey! I have a java implementation of the Rabbit Algorithm i recently did for someone. Would you be interested? Just buy it from me for 100 pounds

£100 GBP in 3 dias
(6 Comentários)

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£150 GBP in 3 dias
(17 Comentários)

Hi, I'm interested working on this project, didn't you post it already earlier? I can provide you a Python 3 (or Python 2) CLI program that does encryption and decryption of binary files with a custom product cipher Mais

£98 GBP in 3 dias
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Предложение еще не подано

£138 GBP in 2 dias
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£142 GBP in 3 dias
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£250 GBP in 7 dias
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£50 GBP in 3 dias
(1 Comentário)

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£150 GBP in 10 dias
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