Secrecy Goes Open Source, Assures File Encryption
http://www.xda-developers.com/android/secrecy-open-source-encryption/
http://forum.xda-developers.com/showthread.php?t=2704486&__utma=248941774.1193647227.1365084669.1408930648.1409192535.59&__utmb=248941774.1.10.1409192535&__utmc=248941774&__utmx=-&__utmz=248941774.1409192535.59.56.utmcsr=t.co|utmccn=(referral)|utmcmd=referral|utmcct=/14Npe5aBet&__utmv=-&__utmk=30059452
https://github.com/Doplgangr/secrecy
https://play.google.com/store/apps/details?id=com.doplgangr.secrecy
Androidのファイルを暗号化。