Quote from: kmfkewm on June 09, 2012, 07:07 amQuote from: vlad1m1r on June 08, 2012, 11:41 pmQuote from: homersimpson on June 08, 2012, 11:27 pmI have been writing a diary for a long time now and I don't intend to stop or miss out information just because it's illegal.However I always prepare for the worst so best to be safe, right? Even though I keep my diary in a safe, if I was ever forced to hand it over I'd like for it not to be used as evidence against me.So what type of stuff can I get away with? Obviously I'm not going to write passwords and shit that actually links to my account or gaining access to create new evidence from my computer.Can I write about ordering things? People that I've taken things with? What things I've taken?I always write trip reports too.If I write at the start of my diary this is all non-fiction and nothing is real does this void it as evidence?Or should I write it with a "swim" approach like forums do? And use codewords and initials for people?I just don't want to drop myself or more importantly my friends in the shit for my carelessness! Thanks :)Hi Homer,If you want to use a diary I suggest you protect your very personal information such as passwords and order ID's with an old fashioned pen and paper cipher. One of my favourite books on this topic is Simon Singh's "The Code Book" which I have made available for download at http://utovvyhaflle76gh.onion/sTORage/vlad1m1r/books/The%20Code%20Book%20%2D%20Simon%20Singh.epubProbably the most secure one is the book cipher where you can choose a key text such as an essay or book and then write down messages to yourself by numbering the words in the book. I have posted about this elsewhere on the forums if you're interested.Hope this helps,V.If each word corresponds to a single number it is just a substitution cipher and very weak to frequency charts and a lot of other attacks.It's true the book cipher like any other is vulnerable to Cryptanalysis but you can use it in a secure way as I do.For instance, you can decide that every fifth character on a certain page of a certain book is going to be the password to decrypt your hard drive. Even if you did find it necessary to write down the page number for instance, only you would know the book and correct sequence. Of course this isn't vulnerable to frequency analysis as you're setting the spacing between words.If you want to encode actual names, places dates and so forth it really comes down to the length of the key text and whether the characters are written in a linear way - firstly there's no requirement that the key text necessarily be in English(!) - For instance in German while the letter E is also the most common as in English on average it makes up a staggering 13% of any average text!You can also make the cipher more secure by writing your own key text. This needn't be anything suspicious - when I was at University for instance I used my dissertation on World War 2 as a key text. The mixture of two languages and the large amounts of citations and serial numbers increases its strength considerably.I don't of course mean to downplay the importance of mastering GPG and disk encryption software like Truecrypt but pen and paper ciphers can be extremely secure if used correctly and in tandem with more modern techniques.V.