More easy reads for the middle of the night

High Lord by Trudi Canavan

I have reached the end of the Black Magician trilogy! Finally I have closure and Trudgy Caravan and I can go our separate ways! In this final instalment it turns out (rather disappointingly) that the High Lord is not in fact evil. He has been practising black magic but only because it was necessary to protect the kingdom from a bunch of evil, foreign magicians. Sonea choses to help him, but they are caught practising black magic and drummed out of the guild leaving the country undefended with evil magicians marching towards it...

Tithe by Holly Black

Now this was good fun! 16 year old Kaye Fierch was able to see fairies as a little girl. When her mother's latest relationship breaks down they move back to the town she grew up in. The fairies are still there but now they seem to be involved in very adult machinations...

Escardy Gap - Peter Crowther and James Lovegrove

Basically this book is Something Wicked This Way Comes by Ray Bradbury rewritten in the style of Stephen King with added postmodern wankery of an author trying to write a horor novel as the wraparound story. The sad thing is that I read it from cover to cover, more fool me! Going to try to ebay it to buy stuff for Tiny Daughter...

The Eclipse of the Century by Jan Mark

When 20 year old student Keith Chapman is involved in a car crash he has a near death experience, but rather than seeing a vision of heaven and speaking to his dead relatives he sees a town square and hears a woman's voice telling him that they will meet again in Qantoum, under a black sun at the end of a thousand years. Keith does some research and discovers that Qantoum is a real place; a town which sprang up round an oasis on the silk road it has been conquered by Alexander the Great,the mongols and Russia but with the collapse of the Soviet Union it is now in a disputed territory on the boader of Tajikistan. He determins to visit to see whether it is anything like his vision. Years of fighting have left Qantoum a wreck without power and miles from any kind of authority. It has two distinct populations: the Sturyat, descendants of a tribe of nomads who settled there a thousand years ago and a motley collection of westerners living in and around the town museum. Feeling very pleased with his own political correctness, Keith moves in with the natives, but are they Sturyat as peaceful as they first appear? Why is everyone who crosses them "taken by the sand" and is there any truth to their bizzare assertion that their race comes from space and will be heading back there soon?

I really enjoyed this book; once again there was an upside to being hauled out of my lovely bed! My favourite character was the phlegmatic Russian Lt Kije. I can still see the image of him that built up in my head, sardonic, unshaven and with a filthy Russian cigarette on the go (the text never really describes him, this is just how I think he ought to look).

The Code Book by Simon Singh

Hurray! I think my brain is finally beginning to recover!

I've had this book on my shelf for years, but while I was going to work programming everyday it just looked like more work. Maternity leave was the right time to read it. Either my brain is starting to work properly again or Singh writes with enough clarity to penetrate the mum-fog. Probably a bit of both.

The code book is a history of cryptography from the Ceasar cypher (good enough for 1000 years then broken by Arab scholars) through to quantum cryptography. The Caesar cipher was followed by polyalphabetic ciphers (in the case of the one time pad the key is as long as msg therefore unbreakable but logistical problems distributing keys mean this method must be used sparingly). We then come to the mechanisation of encoding and the Enigma machine. The section on the breaking of the Enigma cipher was especially interesting as I had never realised the contribution made by the Polish secret service as well as the more familiar story of Bletchly Park. In many cases it was human weaknesses that made the messages decodeable ( for example, the choice of 3 letter day codes was left to the individual operators who would sometimes get lazy and use their own initials, or letters which were next to one another on the Enigma machine keyboard). Another trick was to realise that a certain message at 6am was always a weather report, so you could expect the word "wetter" near the beginning. We then move on to RSA and PGP. For the future we have the possibility of quantum cryptography. There are also interesting asides on the translation of the Rosetta Stone and linear b.

Great stuff. I feel enthused to have a go at the cyphers in the back. Then I'm going to decode the Voynich manuscript, solve the travelling salesman problem and sort out 3 body physics before the end of maternity leave...