FileVault 2 - Dealing with users who enabled FileVault on their own

You can try this.. I can't remember where I got this script from. But this prompts user's for their current password they used to enabled FileVault2.. This redirects a new FileVault2 key to Casper..

#!/bin/bash

####################################################################################################
#
# Copyright (c) 2013, JAMF Software, LLC.  All rights reserved.
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####################################################################################################
#
# Description
#
#   The purpose of this script is to allow a new individual recovery key to be issued
#   if the current key is invalid and the management account is not enabled for FV2,
#   or if the machine was encrypted outside of the JSS.
#
#   First put a configuration profile for FV2 recovery key redirection in place.
#   Ensure keys are being redirected to your JSS.
#
#   This script will prompt the user for their password so a new FV2 individual
#   recovery key can be issued and redirected to the JSS.
#
####################################################################################################
# 
# HISTORY
#
#   -Created by Sam Fortuna on Sept. 5, 2014
#   -Updated by Sam Fortuna on Nov. 18, 2014
#       -Added support for 10.10
#       -Updated by Sam Fortuna on June 23, 2015
#           -Properly escapes special characters in user passwords
#
####################################################################################################
#
## Get the logged in user's name
userName=$(/usr/bin/stat -f%Su /dev/console)

## Get the OS version
OS=`/usr/bin/sw_vers -productVersion | awk -F. {'print $2'}`

## This first user check sees if the logged in account is already authorized with FileVault 2
userCheck=`fdesetup list | awk -v usrN="$userName" -F, 'index($0, usrN) {print $1}'`
if [ "${userCheck}" != "${userName}" ]; then
    echo "This user is not a FileVault 2 enabled user."
    exit 3
fi

## Check to see if the encryption process is complete
encryptCheck=`fdesetup status`
statusCheck=$(echo "${encryptCheck}" | grep "FileVault is On.")
expectedStatus="FileVault is On."
if [ "${statusCheck}" != "${expectedStatus}" ]; then
    echo "The encryption process has not completed."
    echo "${encryptCheck}"
    exit 4
fi

## Get the logged in user's password via a prompt
echo "Prompting ${userName} for their login password."
userPass="$(/usr/bin/osascript -e 'Tell application "System Events" to display dialog "Enter your computer login password to unlock FileVault2 (Casper Admin):" default answer "" with title "Login Password" with text buttons {"Ok"} default button 1 with hidden answer' -e 'text returned of result')"

echo "Issuing new recovery key"

if [[ $OS -ge 9  ]]; then
    ## This "expect" block will populate answers for the fdesetup prompts that normally occur while hiding them from output
    expect -c "
    log_user 0
    spawn fdesetup changerecovery -personal
    expect "Enter a password for '/', or the recovery key:"
    send "{${userPass}}"
    send 
    log_user 1
    expect eof
    "
else
    echo "OS version not 10.9+ or OS version unrecognized"
    echo "$(/usr/bin/sw_vers -productVersion)"
    exit 5
fi

exit 0