/etc/grub.d/00_header:
cat << EOF
set superusers="user1"
password user1 password1
EOF
/etc/grub.d/10_linux:
printf "menuentry --users user1 '${title}' ${CLASS} {
" "${os}" "${version}" {
Password Encryption:
# grub-mkpasswd-pbkdf2
Enter password:
Reenter password:
Your PBKDF2 is grub.pbkdf2.sha512.10000.27E7570538711F871060082CBD21E0B06F464064
65E07E49B4959746BA80C522E1E8C6941D7BE109846A01ADD52148EAC4B358A43916BCC2456EE2FB
C47DEAF1.1CB35090D35B44AB599FD0EEAF53F84C5F95BFC9741BFFE9609348DD50174B9E865C956
5F014EA8DBD94DCC6CD5C9CEEE1592267D32D4D647A9DCE20B94187BF
cat << EOF
set superusers="user1"
password_pbkdf2 user1 grub.pbkdf2.sha512.10000.27E7570538711F871060082CBD21E0B06
F46406465E07E49B4959746BA80C522E1E8C6941D7BE109846A01ADD52148EAC4B358A43916BCC24
56EE2FBC47DEAF1.1CB35090D35B44AB599FD0EEAF53F84C5F95BFC9741BFFE9609348DD50174B9E
865C9565F014EA8DBD94DCC6CD5C9CEEE1592267D32D4D647A9DCE20B94187BF
EOF