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.
WTI has declined to $30 per barrel, the lowest level in more than 12 years. But heavy oil producers in Canada would love to have $30 oil. The price for a barrel of bitumen, the tar-like oil sands that comes from Alberta, fell to just over $8 per barrel this week. That is not a typo. Bitumen traded at $8.35 per barrel on Tuesday. In fact, Amazon.com sells oil drums â just the barrel, not the oil â for $78, almost ten times the cost of the actual bitumen.