How to convert plain text string variable to bytes32 variable? And how to store bytes32 in one variable after converting? [duplicate]

Question

pragma solidity ^0.4.25;

contract Purchase {
    address public sellerAddress;

    constructor (address _sellerAddress) {
        sellerAddress = _sellerAddress;
    }
}

contract Buyer is Purchase {
    address public buyerAddress;
    string pass;
    bytes32 hashpass;

    modifier onlyBuyer() {
        require(msg.sender == buyerAddress);
        _;
    }

    constructor(string _pass) {
        buyerAddress = msg.sender;
        pass = _pass;
    }

    function stringToBytes32(string pass) returns (bytes32 hashpass) {
        hashpass = bytes32(pass);
    }

    function generateHashPass() public {

    }
}

Answer 1

If you want to convert a string to a bytes32, you can use the method described in this post: How to convert a string to bytes32?

However, it looks like you're trying to take a hash of the string, which can be done with a hashing function such as keccak256.

hashpass = keccak256(pass);