4 encryption
.Data encryption (Encryption). As main mechanism for data protection in live during the communication. If there is a good encryption information will also be prevent can be read from the author.The system to encrypt and decrypt cannot distinguish between the permitted use, or the attack if the offense that has water (Key) for decrypting data so. Data encryption.Stealing the key used to decrypt And there must be protection system as a whole, by a process called this the encrypt and decrypt "The principle of the data (Cryptography
.)"
4.1 benefits of encryption
.Data confidentiality is regarded as one of the important elements. Security of information. The data encryption is to make the information.In practice, we use the program on the encryption and decryption, which most of the time, to use the code in the process. Here, for example, you can encrypt data. The document is simple with the program Microsoft Word 2007.Window) > arrange > encrypt documents, as shown at the 4.1 then filling the password required. Then save the file the document again. And when can open a file the documents. Need to enter a password correctly. The caution is that if the password will make.
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