EncrypDroid в Android Market

EncrypDroid (v. 1.3.1) Разработано TAD Labs

Simple text encryption/decryption utility.
You can communicate with friends in secrecy or save sensitive data you don't want others to read.

Features include:
-Optional password protection
-Automatic password detection when decrypting
-Saving encrypted text to file
-Support for sending encrypted text via e-mail or SMS