Entropy is used to calculate random data that the system uses in cryptographic operations.
kernel.random.entropy_availin the configuration file /etc/sysctl.conf.
To increase system entropy on a Windows system, move the mouse pointer in circles or type characters randomly into an empty text document.
On a UNIX or Linux system, ensure that
rng-toolsis installed and run the following command.
sudo rngd -r /dev/urandom -o /dev/random
To check the level of a system entropy on a UNIX or Linux system, run the following
Values smaller than 3200 are considered too low to generate a certificate and might cause the system to hang indefinitely.