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.
From 1974 to 1978, the world crude oil price was relatively flat ranging from $12.52 per barrel to $14.57 per barrel. When adjusted for inflation world oil prices were in a period of moderate decline. during that period OPEC capacity and production was relatively flat near 30 million barrels per day.n the post World War II era, U.S. oil prices at the wellhead averaged $28.52 per barrel adjusted for inflation to 2010 dollars. In the absence of price controls, the U.S. price would have tracked the world price averaging near $30.54.