I ran across this new app called “Wickr,” available from the iTunes store. I haven’t tested it yet, but it sounds amazing. It is supposed to be available for Android soon. Best of all, the basic version is FREE.
What does Wickr do? It’s an app that sends encrypted communications—photos, video, texts, email—to people you trust. Then, at a predetermined time, that communication will self destruct. It uses Advanced Encryption Standard (AES), Elliptic Curve Diffie-Hellman (ECDH), and Transport Layer Security (TLS) algorithms for encryption, which Wickr talks about here https://www.mywickr.com/en/downloads/RSA_Security_Announcement.pdf
Caveat: Don’t lose your password! You lose access to your account. Also, make sure that you read the “Frequently Asked Support Questions” before you install the app, so that you understand how it works.
More stories about Wickr:
http://news.cnet.com/8301-1009_3-57462189-83/wickr-an-iphone-encryption-app-a-3-year-old-can-use/
http://www.npr.org/2012/12/04/166464858/online-privacy-fix
http://bits.blogs.nytimes.com/2012/06/27/an-app-that-encrypts-shreds-hashes-and-salts/
Intentional Privacy 