Encryption works by using keys to scramble information before it is transmitted. There are two main types of encryption: symmetric and asymmetric. Symmetric encryption uses the same key to both encrypt and decrypt data. It is like two generals sending coded messages using the same cipher. Computers use long encryption keys for security. Early symmetric algorithms like DES used 56-bit keys, while the current standard AES uses 128-bit, 192-bit or 256-bit keys. Hashing algorithms are used in public key encryption. A hash takes an input and generates a unique output value using an algorithm. It is very difficult to determine the original input from the hash value alone. Hashes are used to verify data integrity and in digital

1. Introduction to How Encryption Works
When it uses the Internet, we do not just necessarily click it in the
circumference, and it is necessary to send information of our own to other
people at our much time of the - online which does not understand information
(a news peg to read, for example, or blog contribution) passively. I need that it
enters by many secret personal information to give an order for anything about
the Internet regardless of whether or the book from its contracting an online
vendor or the online account, a CD are something elsewhere. As for our name,
e-mail address and physical address and number of the telephones, password,
the typical duties may not include only a password (PIN) either.
We lived in the surprising growth of the Internet and excited a company and
consumers like by the promise to change a method to act. While I sit down
before a laptop, it is easy at all I sell and buy a product all over the world, and to
do it. However, the preservation is main concern on the Internet when I use it
because you in particular send a confidential information between a party.

2. Symmetric Key (1)
Like two Spartan generals sending a message each other, the
computer which I use the symmetry-shaped key coding for to
send information among each other must comprise the same
key.
There is private key (cord) which I can use because it encrypts
one information to each computer before it is sent to another
computer in key to symmetry form coding about a network. The
key of the symmetry form obliges it to what you understand
which computer talks towards each other so that you can install
a key on each. The key coding of the symmetry form is the
same as the secret cord which you must know because each of
two computers decodes information basically. The cord
provides a key in decoding a message.

3. Symmetric Key(2)
Please think about it in this way: You make the coded message
which 2 sends to the friend whom each letter is exchanged with
in a letter below from it in the alphabet. Thus "A" becomes "C"
and "B" becomes "D". You already told a trusted friend that a
cord "was a shift by 2". Your friend gets a message and
interprets it. Anyone to see a message other watches only
nonsense.
The same thing goes for a computer, but of course keys are
usually long by an emergency. The algorithm of the first main
symmetry form developed for a computer in the United States
of America was Data Encryption Standard (DES). And it was
approved to use it in the 1970s. DES uses the key to 56 bits.

4. Symmetric Key (3)
A key of -56 bits was able to easily decode data encrypted in
the shortstop who provided combination (70 quadrillion) (attack
of the violence) (I try every possible combination to merely find
a right key) that could be to 1 quadrillion more than 70 since a
security expert of the 70s did not think already even if it was
fixed DES because a computer became higher-speed. DES
was exchanged with Advanced Encryption Standard (AES)
afterwards. And it uses the key to 128, 192 or 256 bits. Most
people think that it is enough coding standards for the long time
when AES comes: For example, the 128 bits key can have
things more than 300000000000000000000000000000000000
key combinations

5. Hashing Algorithm (1)
The key to public key encryption is based on hash value. This is
value calculated from a base input number using algorithm
performing a hash. The hash value is a summary of the first
value basically. The important thing about the hash value is that
it is almost impossible to draw an original input number without
knowing the data which are used to make hash value. There is
the simple example here:
Input number Hashing algorithm Hash value
10,667 Input # x 143 1,525,381

6. Hashing Algorithm (2)
You can watch it how difficult it is to be settled when value
1,525,381 came out of an increase of 10,667 and 143.
However, it will be very easy to calculate value 10,667 if you
know that a multiplier is 143. As for the public key encryption,
the fruit is very more complicated than this example, but it is a
basic thought.
The public key including the number of 40 bits or 128 bits is
clear, and, for coding, use the complicated algorithm and very
considerable hash level generally. - this having a combination
varying in 2128 or
340282366920938463463374607430000000000000000000000
0000000000000000 with the possibility seems to be going to
find one specific sand to the number of 128 bits in the Sahara.