This commit is contained in:
Bob Mottram 2017-06-24 12:18:48 +01:00
parent b91c85eaa2
commit e77cb551ea
2 changed files with 87 additions and 84 deletions

View File

@ -13,7 +13,7 @@
# License
# =======
#
# Copyright (C) 2016 Bob Mottram <bob@freedombone.net>
# Copyright (C) 2016-2017 Bob Mottram <bob@freedombone.net>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
@ -28,6 +28,87 @@
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
function gpg_delete_key {
key_username=$1
key_id=$2
su -c "gpg --batch --quiet --homedir=/home/$key_username/.gnupg --delete-secret-key $key_id" - $key_username
su -c "gpg --batch --quiet --homedir=/home/$key_username/.gnupg --delete-key $key_id" - $key_username
}
function gpg_set_permissions {
key_username=$1
if [[ "$key_username" != 'root' ]]; then
chmod 700 /home/$key_username/.gnupg
chmod -R 600 /home/$key_username/.gnupg/*
chown -R $key_username:$key_username /home/$key_username/.gnupg
else
chmod 700 /root/.gnupg
chmod -R 600 /root/.gnupg/*
chown -R $key_username:$key_username /root/.gnupg
fi
}
function gpg_reconstruct_key {
key_username=$1
key_interactive=$2
if [ ! -d /home/$key_username/.gnupg_fragments ]; then
return
fi
cd /home/$key_username/.gnupg_fragments
no_of_shares=$(ls -afq keyshare.asc.* | wc -l)
if (( no_of_shares < 4 )); then
if [ $key_interactive ]; then
dialog --title $"Recover Encryption Keys" --msgbox $'Not enough fragments to reconstruct the key' 6 70
else
echo $'Not enough fragments to reconstruct the key'
fi
exit 7348
fi
gfcombine /home/$key_username/.gnupg_fragments/keyshare*
if [ ! "$?" = "0" ]; then
if [ $key_interactive ]; then
dialog --title $"Recover Encryption Keys" --msgbox $'Unable to reconstruct the key' 6 70
else
echo $'Unable to reconstruct the key'
fi
exit 7348
fi
KEYS_FILE=/home/$key_username/.gnupg_fragments/keyshare.asc
if [ ! -f $KEYS_FILE ]; then
if [ $key_interactive ]; then
dialog --title $"Recover Encryption Keys" --msgbox $'Unable to reconstruct the key' 6 70
else
echo $'Unable to reconstruct the key'
fi
exit 52852
fi
gpg --homedir=/home/$key_username/.gnupg --allow-secret-key-import --import $KEYS_FILE
if [ ! "$?" = "0" ]; then
shred -zu $KEYS_FILE
rm -rf /home/$key_username/.tempgnupg
if [ $key_interactive ]; then
dialog --title $"Recover Encryption Keys" --msgbox $'Unable to import gpg key' 6 70
else
echo $'Unable to import gpg key'
fi
exit 96547
fi
shred -zu $KEYS_FILE
gpg_set_permissions $key_username
if [ $key_interactive ]; then
dialog --title $"Recover Encryption Keys" --msgbox $'Key has been reconstructed' 6 70
else
echo $'Key has been reconstructed'
fi
}
function gpg_agent_setup {
gpg_username=$1

View File

@ -28,85 +28,6 @@
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
function gpg_delete_key {
key_username=$1
key_id=$2
su -c "gpg --batch --quiet --homedir=/home/$key_username/.gnupg --delete-secret-key $key_id" - $key_username
su -c "gpg --batch --quiet --homedir=/home/$key_username/.gnupg --delete-key $key_id" - $key_username
}
function gpg_set_permissions {
key_username=$1
if [[ "$key_username" != 'root' ]]; then
chmod 700 /home/$key_username/.gnupg
chmod -R 600 /home/$key_username/.gnupg/*
chown -R $key_username:$key_username /home/$key_username/.gnupg
else
chmod 700 /root/.gnupg
chmod -R 600 /root/.gnupg/*
chown -R $key_username:$key_username /root/.gnupg
fi
}
function reconstruct_key {
key_username=$1
key_interactive=$2
if [ ! -d /home/$key_username/.gnupg_fragments ]; then
return
fi
cd /home/$key_username/.gnupg_fragments
no_of_shares=$(ls -afq keyshare.asc.* | wc -l)
if (( no_of_shares < 4 )); then
if [ $key_interactive ]; then
dialog --title $"Recover Encryption Keys" --msgbox $'Not enough fragments to reconstruct the key' 6 70
else
echo $'Not enough fragments to reconstruct the key'
fi
exit 7348
fi
gfcombine /home/$key_username/.gnupg_fragments/keyshare*
if [ ! "$?" = "0" ]; then
if [ $key_interactive ]; then
dialog --title $"Recover Encryption Keys" --msgbox $'Unable to reconstruct the key' 6 70
else
echo $'Unable to reconstruct the key'
fi
exit 7348
fi
KEYS_FILE=/home/$key_username/.gnupg_fragments/keyshare.asc
if [ ! -f $KEYS_FILE ]; then
if [ $key_interactive ]; then
dialog --title $"Recover Encryption Keys" --msgbox $'Unable to reconstruct the key' 6 70
else
echo $'Unable to reconstruct the key'
fi
exit 52852
fi
gpg --homedir=/home/$key_username/.gnupg --allow-secret-key-import --import $KEYS_FILE
if [ ! "$?" = "0" ]; then
shred -zu $KEYS_FILE
rm -rf /home/$key_username/.tempgnupg
if [ $key_interactive ]; then
dialog --title $"Recover Encryption Keys" --msgbox $'Unable to import gpg key' 6 70
else
echo $'Unable to import gpg key'
fi
exit 96547
fi
shred -zu $KEYS_FILE
if [ $key_interactive ]; then
dialog --title $"Recover Encryption Keys" --msgbox $'Key has been reconstructed' 6 70
else
echo $'Key has been reconstructed'
fi
}
function interactive_gpg_from_usb {
dialog --title $"Recover Encryption Keys" \
--msgbox $'Plug in a USB keydrive containing a copy of your full key or key fragment' 6 70
@ -121,7 +42,7 @@ function interactive_gpg_from_usb {
if [ ! -b $USB_DRIVE ]; then
if (( GPG_CTR > 0 )); then
reconstruct_key $MY_USERNAME interactive
gpg_reconstruct_key $MY_USERNAME interactive
return 0
fi
dialog --title $"Recover Encryption Keys" --msgbox $'No USB drive found' 6 30
@ -133,7 +54,7 @@ function interactive_gpg_from_usb {
if [ ! -d $USB_MOUNT ]; then
if (( GPG_CTR > 0 )); then
backup_unmount_drive ${USB_DRIVE}
reconstruct_key $MY_USERNAME interactive
gpg_reconstruct_key $MY_USERNAME interactive
return 0
fi
dialog --title $"Recover Encryption Keys" \
@ -146,7 +67,7 @@ function interactive_gpg_from_usb {
if [ ! -d $USB_MOUNT/.gnupg_fragments ]; then
if (( GPG_CTR > 0 )); then
backup_unmount_drive ${USB_DRIVE}
reconstruct_key $MY_USERNAME interactive
gpg_reconstruct_key $MY_USERNAME interactive
return 0
fi
dialog --title $"Recover Encryption Keys" \
@ -209,8 +130,9 @@ function interactive_gpg_from_usb {
cp -r $USB_MOUNT/.gnupg/* $HOME_DIR/.gnupg
GPG_LOADING="no"
dialog --title $"Recover Encryption Keys" \
--msgbox $"GPG Keyring loaded to $HOME_DIR" 6 70
--msgbox $"GPG Keyring directory loaded to $HOME_DIR" 6 70
else
# Collect fragments from the USB drive
if [ ! -d $HOME_DIR/.gnupg_fragments ]; then
mkdir $HOME_DIR/.gnupg_fragments
fi