The first thing will come to your mind is what does encryption means? Encryption means securing information by transforming it with an algorithm into a form that can only be readily translated by those that know the algorithm used to make it. While encrypting a data it simply replace a letter by another letter every time it appears. Encryption transforms private information by turning records of information into a jumble of nonsensical words. In the history, Encryption has been used in government correspondence, especially in the military, but as the influence of computer and internet increased it has become an important part of securing vital information such as passwords and preventing identity theft.
Now we will tell you about the computer password encryption. When you enter password the password goes through an encryption process that changes the characters used into a string of characters that is usually much longer than the password itself and will appear to be completely random. Most of the password encryptions work as a one way check for password validity: the algorithm that encryption is using always transforms a given password into the same string of characters. When you enter a password, it is run though the algorithm, and the encrypted string of characters produces is compared to the encrypted password that is stored, and if they match, the password is accepted. Good encryptions will always transform a given password into a character of string that is nothing like the string produced by the same password when a type is made.
Now the thing is the strength of password and encryption. You know that Password encryption is a necessary security measure to protect sensitive information, but sometimes the best encryption systems are not perfect. If the encryptions are weak that use simple algorithms produce character strings that can be attacked directly. Stronger encryptions are also being cracked through volume or brute force attacks where each possible password is tested. The only way to ensure it the encryption itself cannot be attacked is preventing access to the encrypted password, but still, passwords may be vulnerable to guessing strategies. People often use real words in passwords, or use words or numbers that are familiar or important like name, birth date. You can remember those passwords easily but they are very easy to crack. If you are using the same password for many different programs and internet sites then it is very easy to remember, but again, this makes passwords more vulnerable.
You can also use pass cards to encrypt the passwords, these cards are available from a simple card with a magnetic strip, similar to a credit card to sophisticated smart cards that have an embedded computer chip. There are other methods which can be very useful for encryption; one of these is digital signature. Digital signature is basically a method to ensure that a document is authentic. The DSS (Digital Signature Standard) is a type of public-key encryption method that uses the Digital Signature Algorithm (DSA).