How does http basic auth work?

Question

Nginx

With this script I generate htpasswd for Nginx:

#!/bin/bash

set -e

echo "**********************************************"
echo ".htpasswd file for JSDocs protection generated"
echo "**********************************************"

read -p 'Login: ' uservar

if [ -z "$uservar" ]; then
    echo "Login must by non empty string!"
    exit 1
fi

HTPASWD_LOGIN="$uservar"

HTPASWD_PASSWORD=$(openssl passwd)

str="${HTPASWD_LOGIN}:${HTPASWD_PASSWORD}"

echo $str > ./.htpasswd
sudo cp ./.htpasswd /var/www/html/
rm -f ./.htpasswd

The output line is:
login:4sdf56TUYTU.JK I start
the generation again and enter the same password. The output string is:
login:oyUYIUY4654HJH
Attention, question! And how then does Nginx know that the password is correct if the hashes are different?

Answer 1

man7.org/linux/man-pages/man3/crypt.3.html