SHA1 collision finder

From a generated SHA1 string (like 769b87a24a8a5f25dcec396dc6a66ee82fa2ccb1 ) we need find a collisions.

The original string can be variable size (from 32KB up to 512KB), you will have this original string to find a collision.

The objective is give two strings of same size that generates the same SHA1 hash.


-Developed in python or C

-We can use GPU to process data.

Habilidades: Programación en C, Linux, Python, Arquitectura de software, Verificación de software

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Información del empleador:
( 58 comentarios ) Manacor, Spain

Nº del proyecto: #5878577

13 freelancers están ofertando el promedio de $1174 para este trabajo


hi, We have reviewed all your project feature and we can do your job through our experienced team. Project Requirement Understanding : We can o this very well an can make you happy. We want to share some questi Más

$902 USD en 10 días
(120 comentarios)

[login to view URL] Dear Client I hope you are doing well! We have gone through your requirement and we understand that you are looking for highly skilled, qualified, and experience Más

$1237 USD en 10 días
(18 comentarios)

Hello. I can make a program that tries to find collisions but I cannot assure it will actually find one. The likelihood of two equal sized strings to share the same SHA1 string is in the order of 10^-45. That is... Más

$900 USD en 10 días
(7 comentarios)

A proposal has not yet been provided

$947 USD en 10 días
(75 comentarios)

A proposal has not yet been provided

$972 USD en 10 días
(5 comentarios)

Will be using openssl with engine support for GPU. I have vast experience with C and openssl. Let me know if this suites you.

$1500 USD en 10 días
(9 comentarios)

Предложение еще не подано

$2842 USD en 20 días
(1 comentario)

Sounds like a cool project! If you are interested, I'd like to implement it in julia's CUDA library [login to view URL] and at the same time I am advertising julia as language for number crunching Más

$701 USD en 10 días
(4 comentarios)

Hola olvidese de la GPU, yo usaria FPGA, o ASics para implementar su codigo, soy desarrollador de prototipos electronicos y hice otro trabajo para buscar colisiones en sha-256 para mining con bitcoin, y encima soy espa Más

$1000 USD en 14 días
(0 comentarios)

A proposal has not yet been provided

$902 USD en 10 días
(0 comentarios)

A proposal has not yet been provided

$1234 USD en 10 días
(0 comentarios)

I can make a program that tries to achieve your goal. But you should know it probably won't work. The same is valid for any other applicant's solution. You should read [login to view URL] Más

$833 USD en 10 días
(0 comentarios)

Thanks for your post on Freelancer, firstly I would like to say that we DO NOT ASK TO RELEASE PAYMENT till the entire project is complete. Only thing that we request is that you put in an escrow deposit that you do no Más

$1288 USD en 30 días
(1 comentario)