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.
Prices of WTI per barrel during the period considered above were lower than those of the two other crude oils, with the price of OPEC basket oil reaching 104.45 U.S. dollars per barrel in July 2013, and the UK Brent crude oil price at 107.93 U.S. dollars per barrel in July 2013.his statistic depicts the price of West Texas Intermediate (WTI) crude oil from August 2014 to August 2015. WTI is also known as Texas light sweet and is a grade of crude oil, often used as a benchmark for oil pricing.