Skype stores database in plaintext in your profile. It is a SQLite
database with lots of data. SKrYPtEd just encrypts the text of the
messages so every metadata is kept.
It protects from local or remote attacks if an attacker would be interested in
conversations by grabbing or sending this database somewhere.
Just install it. It will ask for a password that is not stored in your system. Everytime Skype starts up, it will ask for the password, but introducing it is not required. Just use it when you need to get your old messages back. SKrYPtEd allows you to keep your database transparently encrypted while you use the program and comunicate with your contacts.
|With SKrYPtEd, meesages are encrypted|
The Skype database is stored locally in whatever device Skype is used, so take into account that this program only provides protection for a local storage of the database and conversations.
It allows to decrypt as many days back as you want to, but it will always allow to use Skype “normally” if no password for SKrYPtEd is provided. It does not work for Skype for Business version.
This video shows an example of how an attacker could just grab the Skype database using a simple malicios document with a specially crafted macro and how SKrYPtEd could help.
You can download SKrYPtEd (there is a 32 and 64 bit version) from here.