I would say 2 things, to be confirmed by some expert :
1) In systems like NT4, only the 8 first digits are encrypted, the rest of
the password is stored in the clear. In your case VX.97tf is then much
secured than theusgot (68^7 compared to (8digits words number) + (7digits
word number + 68) +
The first half of the book is boring; there is nothing new compared to what
one can learn in school, and one can imagine by himself. But I agree that
the second part, which explains clearly how and why we are using today's
cryptography systems, is quite interesting.
Hopefully the book is so
