Encrytion is a mehod of scxrambling messages and oter data so that it can not be read by an unauthorized peerson. Unfortunately, it has becoome too easy to intercept messsages and use them for illegal purposes. Encryption protects the data.
Simple encrytpion coyuld be to use the aphabet in reverse:
ABCD EFGH IJKL MNOPQRST UVWX YZ
ZYXW VUTS RQPO NMLK JIHG FEDC B.
'Please repy to this mesage beomes KOVZHV IVKOB GL NVHHZV
Unfortunately, this code will be broken very easily. A more secure system will use the shift method, whiich uses a table, but each letter is shifted to the right by 3 windows.
'Please rply to this messaeg "Now it becoms SOSWVS FSHgLE D. DPOE KSEEWQS. That's better, but relies on the persopn receiving the message know the key (what method was used). This type of encryption will be broken for a second experienced attacker.
Modetrn computers rely on more secure methods:
The first is a symmetric key, where the sender and the recipient knows the key and decrypt the message. Others will see a hodfge-poidge of letters.
The second method is known as public key, a typical system uses PGP (Pretty Good Privacy), based on public key, which is available in the message and sewcret key, I only know the sender and the recipient. Again, someone else mind delirium.
The third method is known as a digittal certificate if the certfiicate acts as an intermediary, verification of idenitty of the sender and the recipient, if both are authentic certificate allows the message to be decrypted.
In addition to financial transactions ussing a secure system know as SSL (Secure Sockets Lyer) the user will notie that the ussual http:// replaced HTTPS: / / and a smalll castle, as a rule, there is a website to show that it is in SSL use. Payments by credit card to use this very secure encryption mehod.
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Learn more about GSM Encryption Thank You
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