Wow On more time we found a good topic for my users that is Random Number Generator in Solidity using keccak256 this is our today topic, I’m sure that you know about the basic info.
Random Number Generator in Solidity using keccak256
The random numbers are numbers that occur in sequence, Here we will cover this with the following two mandatory conditions:
- Anyone cann’t predict future values based on past outputs
- The values distribute after every miny second
So, let’s go and see the code below and if you want to create your own random number then follow below example:
First of all Convert that hash to an uint, and then use % 100 if you want to take only the last 2 digits. This will give us a totally random number between 0 and 99.
For Example:
// Solidity program to // demonstrate on how // to generate a random number pragma solidity ^0.6.6; // Creating a contract contract WholeblogsRandom { // Initializing the state variable uint randNonce = 0; // Defining a function to generate // a random number function randMod(uint _modulus) internal returns(uint) { // increase nonce randNonce++; return uint(keccak256(abi.encodePacked(now, msg.sender, randNonce))) % _ modulus; } }
Output
Read More: Use msg.sender in Solidity Code