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.
July 7, 2008 âCrude oil prices settled-in at a new record of $147 per barrel. The U.S. average price for regular gasoline climbs to an all-time high of $4.11 per gallon. Road trip style vacations are put on hold for many summer travelers.Aug. 5, 2008 âOil prices fall below $120 a barrel.anuary 2, 2008 âThe day after New Years saw crude oil prices at a record $100 per barrel, with regular unleaded fuel costing an average of $3.05 per gallon. January 4, 2008 âGeneral Motors unveils that it has lost an automotive record of approximately $38 billion during the 2007 year.