In turn, this key contains the âcypherâ, which dictates how the data encryption occurs. What is a cypher? A cypher is an algorithm for performing encryption and decryption â a series of steps to follow as a procedure. There are many different ways in which plaintext can be encrypted, but essentially there are two main processes used: symmetric key algorithms and asymmetric key algorithms . Algorithms . Symmetric key algorithms
The average price of a barrel of crude oil this year is $69.90. Prior to September 11th, 2001, oil cost $23 per barrel.This pricing difference has been attributed to the increasing difficulty to obtain oil from the Middle Eastern region, as well as the increasing shortage of oil supply throughout the world.he average price of a barrel of crude oil this year is $69.90. Prior to September 11th, 2001, oil cost $23 per barrel.
The first 11 months of 2014 had an average price of $89.08 but December's sharp drop will bring the annual average price down a bit. During the previous peak price back in 1979 the nominal monthly average oil price peaked at $38 per barrel (although the intraday prices spiked much higher).The common price quoted is the all time high for Crude Oil prices i.e. the price that the highest barrel ever sold for.he first 11 months of 2014 had an average price of $89.08 but December's sharp drop will bring the annual average price down a bit. During the previous peak price back in 1979 the nominal monthly average oil price peaked at $38 per barrel (although the intraday prices spiked much higher).