How many weeks' holiday a year are there? <a href=" http://tamarabaranova.com/can-u-buy-zithromax-online.pdf ">buy zithromax 1000mg</a> Proud tinfoil-hat-wearers among us will point out that these encryption standards may have been molested by the NSA at some point, perhaps to introduce weaknesses that can be exploited to easily crack encrypted data. Putting aside the fact that these algorithms have faced intense public scrutiny before their deployment, if the spooks had nobbled the maths, one wonders why the cops are so keen to extract decryption keys from suspects (or even perfectly innocent people) ... though perhaps that's what they want us to think.