Saving Data on Android

PBKDF2WtihHmacSHA1
.
7. Pass the 
pbKeySpec
 to the 
secretKeyFactor.generateSecret
 method and 
assign the 
encoded
 property which returns the key in bytes.
8. Finally, 
keySpec
 is produced to use when you initialize the 
Cipher
.
All of these steps seem a bit complex, but it’s the kind of thing that’s always the 
same to use; only the data changes. There are still a few steps to do, so let’s get to it!
Using an ini/aliza/on vector
The recommended mode of encryption when using AES is the 
cipher block 
chaining
, or 
CBC
. This mode takes each next unencrypted block of data and uses the 
XOR
 operation with the previous encrypted block. One problem with this procedure 
is that the first block is less unique as subsequent blocks. If one encrypted message 
started the same as another message, the beginning blocks of the two messages 
would be the same. This would help an attacker to find out what the message(s) are. 
To solve this problem, you’ll create an