The ongoing dilemma of digital age is balancing convenience against
security. Security is a system safeguards for protecting information
technology against disasters, system failure, and an unauthorized access
that can result in damage, loss or exposure. There are several reports
of spammers, crawlers and hackers who break into people’s privacy to
gain illegal access to their data. This has posed greater challenges on
people who use database, transact online, and internet users.
Information is a valuable and costly asset that must be presented,
controlled and planned just like other valuable assets within an
organization. This work is designed to provide a security mechanism
using a computerized data encryption system, readable data is altered
into unreadable form to prevent unauthorized access. Encryption is able
to use powerful mathematical concept to create coded message that is
virtually impossible to break. It is easy to encrypt a message on a
simple personal computer so that the biggest computer in the world could
not decipher without spending for more time on the problem that exists
in the life span of the entire universe.
There are two basic forms of encryption; private key encryption and
public key encryption, the same secret key is used by the sender and
receiver to encrypt and decrypt message. Public key encryption also
known as asymmetric key encryption uses two different keys at once, a
combination of a private key and public key, the private key is known
only to your personal computer, while the public key is given by your
computer to any computer that wants to communicate securely with it. To
decode an encrypted message, a computer must use the public key,
provided by the originating computer, and its own private key.
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