Detailed Resources about bitcoin and its security

[tutak]

Hello everybody,
I am a newbie to the idea of Bitcoin. I want to write my bachelors in computer science thesis regarding Bitcoin, regarding how it works and the security part of bitcoin transaction. I have done some preliminary reading about the subject but it has been more general information. Could somebody tell me resources where i could read regarding what kind of Cryptographic Hash Functions are used in transaction and also more details about the digital signature.

Thank you.

[jackjack]

The wiki is full of ressources
https://bitcoin.it/wiki/