In　forensic　investigations,　it　is　vital　that　the　authenticity　of　digital　evidence　should　be　ensured.　In　addition,　technical　means　should　be　provided　to　ensure　that　digital　evidence　collected　cannot　be　misused　for　the　purpose　of　perjury.　In　this　paper,　we　present　a　method　to　ensure　both　authenticity　and　non-misuse　of　data　extracted　from　wireless　mobile　devices.　In　the　method,　the　device　ID　and　a　timestamp　become　a　part　of　the　original　data　and　the　Hash　function　is　used　to　bind　the　data　together.　Encryption　is　applied　to　the　data,　which　includes　the　digital　evidence,　the　device　ID　and　the　timestamp.　Both　symmetric　and　asymmetric　encryption　systems　are　employed　in　the　proposed　method　where　a　random　session　key　is　used　to　encrypt　the　data　while　the　public　key　of　the　forensic　server　is　used　to　encrypt　the　session　key　to　ensure　security　and　efficiency.　With　the　several　security　mechanisms　that　we　show　are　supported　or　can　be　implemented　in　wireless　mobile　devices　such　as　the　Android,　we　can　ensure　the　authenticity　and　non-misuse　of　data　evidence　in　digital　forensics.　©,　2015,　Harbin　Institute　of　Technology.　All　right　reserved.