what is cryptography in hindi ?? Symmetric & Asymmetric Cryptography

hello friend agar ap bhi hacking me intrested ho to apne  Cryptography ke bare me jarur suna hoga ? aur kya ap jante hoge  ki Encryption & Decryption kya hai.so guys ye post apke liye badi helpfull hogi kyuki aj ki new generation me crytography ka bahut use he facebook ,whatsapp jesi badi badi companies bhi crytography ka use karke apna data secure rakhti he jisse agar koi unka data chura bhi le to use read na kar sakre.  cryptography hacking ka ek bahut bada hissa hai. jise samjhna har ek beginner aur hacker ke liye jaruri hai. ham is post me janenge ki cryptography hota hai aur ye kitne tarah ke hote hai. Asymmetric key and Symmetric key Cryptography kya hai. aur hame iski jarurat kyo padti hai.


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Cryptography hai kya ??

guys hacking ke field me apne cryptography ke bare me bahut suna hoga ye koi new word nai he ye kafi puri technique he jo internet se bhi purani he . guys crypto ka means hota he "hidden" and graphy ka means hota he "write" so iska pura mtlb hua hidden writing .cryptography ka use ham ham hidden writing ke liye karte he jese ki isko ek example ki tarha samjiye .jese ham sab whatsapp use karte he facebook use karte he so guys kya hoga agar koi hamari chat ko bich me se chura ke read kar le to hacker ko hamare sare secret pta paad jayga so guys yaha ham cryptography ka use karte he ham samne bale ko message karte he lekin bo message encrypted hota he means bo is tarike se likha hota he jo ham koi nai samj sakta usko samjne ke liye apko usko crack karna aana chaiye jisko ham latest language me decrypt bolte he means us message to simple language me lana .

for ex . jese meko apko message karna he hiii then me h ko 1 man lunga aur i ko 2 man lunga then mera jo encrypt message baneg bo hoga 1222 so ab isko har koi nai pad sakta isko bho hi pad payga jisko ye pta hoga ki isko kese encrypt kiya gya he .so i hope samaj gaye hoge 

guys eshi hi apne dekha hoga ancient time me log cryptography ka use karte the lekin bo kitna advance nai tha jese ki bo log paper pe sari typing ulti kar dete the aur usko padne ke liye apko us paper ko mirror ya water ke pass lana padta tha jisse bo kya likha he ap samj sakho . aur usko har koi nai read kar padta tha lekin aj technology bahut aage bad chuki he so ab ham isko advance level pe use karte he .

TYPES OF CRYPTOGRAPHY 

#1. semmetric cryptography 

#2. semmetric cryptography 

#3. hash function

 semmetric encryption  (Secret Key) Cryptography (SKC)

guys isem hota kya he agar ham kisi data ko encrypt karte he to uski ek decrypt key aati he jisse bo data access hota he .Isme encryption aur decryption key same rheti he means jis key se data lock hota he uski key se data unlock bhi hota he .

for ex - jese ki ham ghar me tale ka use karte he to jis chabi se tala lock hota he usi chabi se tala khulta bhi he .yaha bhi same bas usko access karne ke liye bo key apke pass honi chaiye 

Asemmetric encryption (Public Key) Cryptography (PKC)

guys jese ki semmetric encryption me ek hi key chaiye hoti he data ko encrypt karne ke liye lekin agar ham baat kare asemmetric encryption ki to yaha guys do ki hoti he jisko ham bolte he public key aur private key .public ki sabko pta hoti he jisse data encrypt hua he lekin private key sirf reciever pe hoti he .

for ex- agar ham baat kare whatsapp ki to agar koi hamko whatsapp pe message karta he to bo encrypted form me hota he halaki hamko bo simple dikhata he kyuki hamara yaha tak aate aate bo decrypt ho jata he so whatsapp public aur private both keys kaa use karti h yaha send bo he jo message bhej rha he aur reciever aap ho guys .

Hash Functions (digital fingerprint digital sighnature) cryptography

guys ye sabse powerful encryption mana jata he isme hota kya he jese ki ham kisi kisi bhi form yaa fir website me login karte ho yaa fir apni ban detail kahi bhi fill karte ho so guys usme apko user name aur password dalna hota he jo ki us website ke admin ko apki sari detail asani se pta pad sakti he lekin guys don't worry yaha kam karte he hash function ye ek esha encryption he jisko decrypt karna lagwag possible nai he .ye apke data ko md5 hash me convert kar deta he jo ki koi decrypt nai kar sakta aur apka data safe rheta he .

for ex - jese ki apka name hacker he so guys jab bhi ap login karoge hacker name se to bo hacker 1@Y3## is tarike se convert ho jayga .jo kisi ko samaj nai aayga kyuki md5 hash ek powerfull encryption mana jata he .

CRYPTOGRAPHY KE FAYDE 

1. guys sabse bada fayda ye he ki apka data save rheta he aur kisi hacker ke hath nai aata agar apne sahi encryption ka use kiya he to .
2. guys isme hamara data puri tarha save rheta he so hame chinta nai karni padti aur usko koi read bhi nai kar sakta .