What is Cryptography?

Cryptography is the science of using mathematics to encrypt and decrypt data. Cryptography enables you to store sensitive information or transmit it across insecure networks (like the internet) so that it cannot be read by anyone except the intended recipient.

Don’t understand anything?

Ok.

Here we go again:

In Cryptography, we change our normal text into somewhat complex text using some techniques. A normal person who is not aware of these cryptography techniques is able to read it but he/she cannot find the meaning behind it. The person who knows these cryptography techniques can change the text to the original one and can use it.

Now Go Some Technical:

In Cryptography, Normal text is called Plain text.
In Cryptography, Converted text is called Cipher text.
In Cryptography, Changing normal text to some complex form is called as Encryption.
In Cryptography, Changing encrypted text into the plain text again is called Decryption.
The techniques which we use for encryption and decryption are called as Alogorithems.

What is the actual use?

Think what will happen if everyone in the world knows everything about everyone?
By only thinking this, i feel something weird? What do you feel?
So the Cryptography is used for mainly security purposes like

• details in government records,
• banking details
• Facebook chatting details,
• Communication between army people and much more

Some popular Cryptography techniques are:

SSL,PGP,RSA , DES ,SHA

Do you love Graphics?

Don’t understand a lot?

Here the girl converts the plain text into cipher text using a key which is “C”. The boy must have this key which he can use to convert the cipher text into the plain text.

The point here is that if you want to read the message then you must possess the key that is used for encryption.

For more Information about Cryptography please attend the Ethical Hacking workshop