nixpkgs/nixos/modules/installer/tools/nixos-gen-seccure-keys.sh

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#! @shell@ -e
mkdir -p /var/elliptic-keys
chmod 0755 /var/elliptic-keys
cd /var/elliptic-keys
touch private
chmod 0700 private
dd if=/dev/urandom bs=128 count=1 of=private
chmod 0500 private
public=$(seccure-key -F private 2>&1)
echo ${public#*The public key is: } > public
chmod 0555 public