is the most effective way to achieve data security. To read an encrypted file,
you must have access to a secret key or password that enables you to decrypt
it. Unencrypted data is called plain text ; encrypted data is referred to as
1. Symmetric key
symmetric-key schemes, the encryption and decryption keys are the same. Thus communicating parties must have
the same key before they can
public-key encryption schemes, the encryption key is published for anyone to
use and encrypt messages. However, only the receiving party has access to the
decryption key that enables messages to be read.
is the process of taking encoded or encrypted text or other data and converting
it back into text that you or the computer are able to read and understand.
term could be used to describe a method of un-encrypting the data
or with un-encrypting the data using the proper codes or keys.
may be encrypted to make it difficult for someone to steal the information.
Some companies also encrypt data for general protection of company data and
trade secrets. If this data needs to be viewable, it may require decryption.