Not sure, probably need to reverse engineer the sdb file it's seem to be in binary format..
Simon might know how to conver SDB file to key file for FTK.
If you have MEE manager maybe can import then used sbdamcl.exe to extract it out as guide from http://digfor.blogspot.com/2011/07/safeboot-with-encase-or-ftk_18.html
Access to the SafeBoot server is requred when working with both EnCase and FTK.There is no need to export/copy out any files for decrypting with FTK. For Safeboot versions 4.x and 5.x the decryption key can be obtained by runing SbAdmCl.exe command line tool. It's location can vary from version to version on the Safeboot server.
SbAdmCl.exe -AdminUser:admin -AdminPwd:password -command:GetMachineKey -Machine:Machinename
To extract decryption keys for a group of computers the same command can be issued with -Group:* instead of -Machine:Machinename
The command should return 32 bit Encryption Key(s) that can be entered in FTK when the encrypted evidence files are added to the case.
In McAfee Endpoint Encryption Version 6.x the key is exported from the server by using ePO (ePolicy Orchestrator). Check "Exporting the recovery information file from ePO" section of McAfee EETech User Guide for details. Once the .xml file is exported, a base64 key located between < key > and < / key > needs to be copied, decoded and converted to hex. The easiest way to accomplish the task is to utilise this online "Base64 -> hexadecimal string decoder", which should produce the decryption key required by FTK.