Optional password file when splitting gpg key

src/freedombone-base-email

 function split_gpg_key_into_fragments {
     # split the gpg key into fragments if social key management is enabled
     if [[ $ENABLE_SOCIAL_KEY_MANAGEMENT == "yes" ]]; then
+
+        if [ $IMAGE_PASSWORD_FILE ]; then
+            if [ -f $IMAGE_PASSWORD_FILE ]; then
+                ${PROJECT_NAME}-splitkey -u $MY_USERNAME -e $MY_EMAIL_ADDRESS --fullname "$MY_NAME" --passwordfile $IMAGE_PASSWORD_FILE
+                return
+            fi
+        fi
+
         echo 'Splitting GPG key. You may need to enter your passphrase.'
         ${PROJECT_NAME}-splitkey -u $MY_USERNAME -e $MY_EMAIL_ADDRESS --fullname "$MY_NAME"
         if [ ! -d /home/$MY_USERNAME/.gnupg_fragments ]; then

src/freedombone-splitkey

 MY_USERNAME=
 MY_EMAIL_ADDRESS=
 MY_NAME=
+PASSWORD_FILE=
 
 function show_help {
     echo ''
     shift
     MY_NAME=$1
     ;;
+    --passwordfile)
+    shift
+    PASSWORD_FILE=$1
+    ;;
     *)
     # unknown option
     ;;
     exit 5393
 fi
 
+if [ $PASSWORD_FILE ]; then
+    if [ ! -f $PASSWORD_FILE ]; then
+        echo $'Password file not found'
+        exit 62952
+    fi
+fi
+
 FRAGMENTS_DIR=/home/$MY_USERNAME/.gnupg_fragments
 if [ -d $FRAGMENTS_DIR ]; then
     exit 0
     echo $"Unable to extract public key for $KEYID"
     exit 7835
 fi
-gpg --output $FRAGMENTS_DIR/privkey.txt \
-    --armor --export-secret-key $KEYID
+if [ ! $PASSWORD_FILE ]; then
+    gpg --output $FRAGMENTS_DIR/privkey.txt \
+        --armor --export-secret-key $KEYID
+else
+    echo "$(printf `cat $PASSWORD_FILE`)" | \
+        gpg --batch --passphrase-fd 0 \
+        --output $FRAGMENTS_DIR/privkey.txt \
+        --armor --export-secret-key $KEYID
+fi
 if [ ! "$?" = "0" ]; then
     echo $"Unable to extract private key for $KEYID"
     exit 7823
 fi
 echo '$BACKUP_DUMMY_PASSWORD' | \
     gpg --output $FRAGMENTS_DIR/backup_privkey.txt \
-    --batch --passphrase-fd 0 \
-    --armor --export-secret-key $MY_BACKUP_KEY_ID
+        --batch --passphrase-fd 0 \
+        --armor --export-secret-key $MY_BACKUP_KEY_ID
 if [ ! "$?" = "0" ]; then
     echo $"Unable to extract backup private key for $MY_BACKUP_KEY_ID"
     exit 13783