ENCRYPTION
Encryption is the conversion of data into a form, called a cipher text, that cannot be easily understood by unauthorized people. Decryption is the process of converting encrypted data back into its original form, so it can be understood.
The use of encryption/decryption is as old as the art of communication. In wartime, a cipher, often incorrectly called a code, can be employed to keep the enemy from obtaining the contents of transmissions. “Technically, a code is a means of representing a signal without the intent of keeping it secret; examples are Morse code and ASCII.” Simple ciphers include the substitution of letters for numbers, the rotation of letters in the alphabet, and the "scrambling" of voice signals by inverting the sideband frequencies.
More complex ciphers work according to sophisticated computer algorithms that rearrange the data bits in digital signals.
In order to easily recover the contents of an encrypted signal, the correct decryption key is required.
The key is an algorithm that undoes the work of the encryption algorithm. Alternatively, a computer can be used in an attempt to break the cipher. The more complex the encryption algorithm, the more difficult it becomes to eavesdrop on the communications without access to the key.
Encryption/decryption is especially important in wireless communications. This is because wireless circuits are easier to tap than their hard-wired counterparts.
However, as the strength of encryption/decryption increases, so does the cost.
Decryption keys would be stored in a supposedly secure place, used only by authorities, and used only if backed up by a court order.
Opponents of this scheme argue that criminals could hack into the key-escrow database and illegally obtain, steal, or alter the keys. Supporters claim that while this is a possibility, implementing the key escrow scheme would be better than doing nothing to prevent criminals from freely using encryption/decryption
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What is “Law”?
It is possible to describe law as the body of official rules and regulations,
generally found in constitutions, legislation, judicial opinions,
and the like, that is used to govern a society and to control the behaviour of its members, so Law is a formal mechanism of social control.
Legal systems are particular ways of establishing and maintaining social order.
Defining Ethics
I have been blogging about ethics for some time so it is reasonable to ask what is my perspective on ethics? The term ethics is derived from the Greek word ethikos which itself is derived from the
Greek word ethos, meaning custom or character.
In philosophy, ethical behavior is that which is “good.”
The field of ethics or moral philosophy involves developing, defending, and recommending concepts of right and wrong behavior. These concepts do not change as one’s desires and motivations change. They are not relative to the situation. They are immutable.
In a general sense, ethics (or moral philosophy) addresses fundamental questions such as: How should I live my life? That question leads to others such as: What sort of person should I strive to be? What values are important? What standards or principles should I live by? There are various ways to define “ethics.” The simplest may be to say that ethics deals with “right” and “wrong.” However, it is diffi cult to judge what may be right or wrong in a particular situation without some frame of reference.
Computer technology
There is no doubt that computer technology has had a great impact on society and also brought many technical developments with it. It has brought many changes to the way we live as individual as well as members of societies and organizations. It has had major effects and changes on the economy, health, education, industry, agriculture and many other fields. The ability of computers in gathering, processing, presenting and sending large amount of information has had major changes in the way large organizations as well individuals organize their lives. Computers are at work, in schools and hospitals and many other places. We therefore need to have some basic understanding of how they function and the language associated with them.
For people with not enough technical knowledge on computers, the amount of technical knowledge involved in the field of computer technology is overwhelming. It is also a field that changes fast enough for people to keep pace with. This site has been organized to help you understand, in a simple way, the concepts involved and language used in computer technology.