CRYPTOGRAPHY

A Secret communication.......

• What is Cryptography ? 
• Uses of cryptography 
• Cryptanalysis and decryption.
• The lore of unbreakable ciphers.
• Make your own Ciphers

Cryptography is this very science of secret communication.Now i will be explaining key terms and other jargon associated with this science.Welcome into the mysterious world .

EPFT UIJT MPPL MJLF OPOTFOTF UP ZPV ?
Does this look like nonsense to you? But u didn't notice i repeated the line twice.
now let's decrypt it..............

"Replace every alphabet in the first sentence with its previous alphabet. eg : E becomes D".

I hope you got your answer .
What Is Cryptography ?
Converting ordinary information into Encrypted one and converting it back to its original meaningful form.
One of the Secret language system in India like peti,khokha and supari are also the part of this secret communication.