How to create a .Gzip file in android, as well as encrypt and decrypt this file?

Question

Do I have an application in which I want to create a .Gzip file and save it in sdacrd? After that, for security reasons, I want to encrypt this .Gzip file, and also decrypt.

How to do it?

Answer 1

You can take a look at gzip api here: http://developer.android.com/reference/java/util/zip/GZIPOutputStream.html

And also this question: http://developer.android.com/reference/java/util/zip/GZIPOutputStream.html

And you can encrypt / decrypt using the following API: http://developer.android.com/reference/javax/crypto/package-summary.html

And here are examples: http://www.androidsnippets.com/encryptdecrypt-strings