they don't gain access to your bank account and your money as well. But, on the other hand, who would like to remember dozens and dozens of different passwords?
`scat` is the solution to this problem. It allows you to safely generate for each website or service you suscribe to a unique password. All you have to do is remember a single, as strong as possible, password.
Given the same service and password, `scat` will always generate the same password, so you don't have to remember them or note them down!
Passwords generated by `scat` are very secure and independant of each others. If by misfortune one of the generated password is compromised, all other passwords are still safe, and so is the password you used to generate them.
However, as `scat` is fully deterministic, you can simply call it once more, to generate once again the exact same password, this time from another computer.
> **CAUTION** `scat` is not an excuse to use a weak password such as `pony1234`. Always use a strong password (that you can remember) with `scat`.
## Security
By default, `scat` will generate password of length 18, using a mix of lower case letters, upper case letters, digits and various ascii symbols.
This leads to a password entropy of about 115 bits. Meaning that an attacker
knowing which schema you used and able to test a billion password per second would have to wait approximately 50 million times *the age of the universe* to
guess your password correctly. So it's pretty safe.
Now, let's imagine for a second that an attacker gets to know one of your generated password.
This is pretty bad, but not as bad as having a single password. Imagine for a second the disaster if your attacker could directly access all your accounts!
Knowing a single generated password won't help your attacker much, it is still practically infeasable for him to get to your original password, so all of your other accounts are safe!
## Password schemas
As we have just seen, `scat` generates by default password of length 18. But, it also provides other schemas!
This integer seed will be consumed by `scat` to generate deterministically a new password from a schema.
## Installing
For now, `scat` is only distributed as a Haskell source code.
1. If you do not have Haskell and Cabal installed, please visit [the Haskell website and download the Haskell platform][haskell-platform].
2. Once this is done, download the `scat` code and place yourself in the root directory of the project (in which you should find a file named `snap.cabal`).
3. Run the command `cabal configure && cabal install` to install `scat`.
