Hello Dosto,Aaj Hum Baat Krenge Cryptography k Bare me. Cryptography kya hoti hai ? Aur iska kaha use hota hai?
So lets Start
Cryptography me Ap kisi message ko ya apne message ko kisi dusre person ko Privately bhej sake matlb jo v apne msg bheja us msg ko bich me se koi Third Party chura na sake na padh sake use Cryptography kahenge....
For Ex-:2 Person hai (A) aur (B) ab A jo hai B ko koi Msg bhejna chahta hai aur wo ye v chahta hai ki iska Jo msg hai yani A ka wo Direct B k pass Jaye uska msg koi 3rd Party na padh sake...
Bahut Sari Aisi Chize hoti hai jo bahut confidential ya Private hoti hai zydatar business ya kaie chizo me v ho sakti hai jo msg hota hai wo ek insan se dusre insan ko jati hai aur wo private hoti hai aur wo Encrypted hoti hai matlb pahle wo machine k language me convert hoti hai uske bad wo travel krti hai matlb wo jo msg hai wo jane se pahle wo encryption hota hai fir wo msg dusre person k pass jata hai fir wo machine language se plain text me convert kr leta hai and fir wo usko read kr leta hai
matlb jo file travel hoke gyi hai wo encrypted hoti usko 3rd party padh hi ni sakta hai us msg ko wohi insan padh sakta hai jiske pass encryption aur decryption ki key ho ...
Definition of Encrytion and Decryption
Encryption-:Encryption is the process of translating plain text data (plaintext) into something that appears to be random and meaningless (ciphertext)....
Decryption-: Decryption is the process of converting ciphertext back to plaintext. ... A symmetric key is used during both the encryption and decryption processes.