Delphi pincode generator 2

$30-250 USD

Завершено

Опублікований

about 13 years ago

$30-250 USD

Оплачується при отриманні

I require a funtion that creates a pseudo random 6 decimal digit pincode using the date as a seed. A maximum of 1000 codes should be valid for any one day meaning the chance of guessing the correct code is 1 in 1000. It should not be possible to generate the same code twice on the same day. The date seed should be the current date as the code should only be valid for the current day. When decoded and validated against the date, the code should contain information pertaining to a size (small, medium or large). The code generator should be written in Delphi and the decoder to be written in C as it will be decoded on a microcontroller.

C Programming

Delphi

ID проекту: 1059470

Про проект

5 пропозицій(-ї)

Дистанційний проект

Активність 13 yrs ago

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Доручений:

@cnut17

I often made such encoders. I'm rather good at C and Delphi. mockup provided. with 6 digits, that give almost an address space of 20 bits so I would make a reversible binary encryption of the date and a sequence number. resulting values greater than 999999 (about 10%; 2^20 minus one million) should be rejected. you'll have to explain more about the size parameter. will it be 333 pins in each size each day, or 1000 pins per size, or custom arrangement (one selected size for each pin)

$90 USD за 1 день

5,0

(5 відгуки(-ів))

4,2

5 фрілансерів(-и) готові виконати цю роботу у середньому за $278 USD

@AlosDeveloper

Hello, please check PMB

$550 USD за 15 дні(-в)

5,0

(40 відгуки(-ів))

6,5

@DamithaKD

HI THIS IS A SIMPLE PROJECT FOR ME :) TEL ME IF YOU LIKE TO SEE A DEMO :)

$250 USD за 5 дні(-в)

5,0

(53 відгуки(-ів))

6,4

@charlie2002

Expert in Delphi as well as Embedded programming. The above price is for both the Delphi program and the direct decoder in HITECH-C for Microchip micro controllers. -> PMB

$350 USD за 7 дні(-в)