Encryption Algorithm Giving Different Results On Android 2.1 And Versions Above 2.1

I have searched lot before posting this question. Earlier the code was working in non android 4.2/2.1 devices. Then i googled and introduced the below lines of code. That solved it

Solution 1:

You are misusing a pseudo random number generator and it's seed as a key derivation function - this is really really bad style. The pseudo random number generator "SHA1PRNG" is not a standard like AES - therefore you never know what implementation you get. See also Is there a SHA1PRNG standard?

It makes me no wonder that you get different results. Getting a deterministic result based on a given seed is not a property you can expect from a pseudo random number function.

If you want to derive a cryptographic key from a password please use a Key Derivation Function like PKCS #5 / PBKDF2. An implementation of PBKDF2 is AFAIR included in Bouncy Castle.