SHA256 Algorithm kya he voh hindi me jante he
SHA-256 ek cryptographic hashing Procedure hai jo Secure Hash Procedure (SHA) ke family se belong karta hai. Yeh hashing run knockout plan kiya gaya tha america home certificate way (nsa) ke dwara aur yeh wide employ hota hai certificate ke liye specifically blockchain me. Blockchain me yeh Procedure kaafi important role play karta hai but iska use sirf blockchain tak hi limited nahi hai. Balki secure password storage digital signatures aur SSL certificates ke liye bhi hota hai.
SHA ka full form hai “Secure Hash Procedure” aur 256 ka matlab yeh hai ki output hash ki length 256 bits (ya 64 hexadecimal characters) hoti hai.
SHA256 ka kaam kya hota hai?
SHA-256 ek hash Role hai jo kisi bhi Information (message file text) ko ek fixed-size unique string me convert karta hai. Matlab chaahe stimulus kitna bhi bada holmium yeh hamesha ek 256-bit yield (ya 64-character hex value) take karega. Is Method ko hashing kehte hai. Yeh hashish yield Indelible hoti hai matlab aap hashish selenium wapas free information knockout find nahi kar sakte
example ke liye agar-agar aap “hello” train knockout sha-256 me run karte holmium toh aapko kuch aisa yield milega:
2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824
agar aap like stimulus knockout phir selenium run karoge toh aapko wahi yield milega lekin agar-agar ek chhota sa shift karte holmium stimulus me toh hashish bilkul alag hoga. Yeh Characteristic isko deterministic banata hai.
SHA-256 ka importance Blockchain me
Blockchain Tech me SHA-256 ka kaafi bada role hota hai khaaskar Bitcoin jaise cryptocurrencies me.
Block Hashing
Blockchain me har block ko ek unique hash diya jata hai jo us block ke Information ko represent karta hai. Yeh hashish bar ke happy ke sath nexus hota hai aur ek bar ke hashish ka close bar me character hota hai. Agar koi block ke Information me chhota sa change karega toh uska hash extremely change ho jayega isse poori blockchain compromise ho jati hai. Is wajah selenium blockchain knockout tamper-evidence banaya jata hai
Proof of Work (pow)
bitcoin excavation me miners knockout ek aisa hashish get karna padta hai jo net ke rules ke reported holmium. Isko find karne ke liye wo block Information ke sath random values (nonce) ko adjust karte rehte hain. Aur new hash calculate karte rehte hain jab tak unhe sahi hash nahi mil jata.
Also Read this :- blockchain applications in hindi
SHA-256 ke Properties
Deterministic : Jaise ki pehle bataya gaya same input hamesha same hash Produce karega.
Fast Computation : Input se hash Produce karna kaafi fast hota hai jo real-time Uses ke liye kaafi useful hai.
Pre-image Resistance : Hash se wapas original input ko nikalna practically impossible hota hai.
Small Change Big Impact : Input me ek chhoti si change bhi output hash ko dramatically change kar deti hai jise Avalanche Effect kehte hain.
Collision Resistance : Do different inputs ke liye same hash milne ke chances kaafi kam hote hain jo isko secure banata hai.
SHA-256 ka Practical Use Cases
Blockchain (Bitcoin) : Bitcoin ka security layer mostly SHA-256 ke upar based hai. Digital Signatures: Information integrity ke liye digital signatures me hashing Procedures ka use hota hai.
Password Hashing : Secure password storage ke liye bhi SHA-256 use hota hai. Lekin ba advance word hashing Procedures jaise bcrypt jyada advocate kiye jaate hain
ssl/tls certificates : good Web communicating ke liye certificates me hashing Procedures ka employ hota hai
sha-256 ka advance concepts
agar aap aur advance point pe jaoge toh aapko sha-256 ke merkle trees ke sath fundamental interaction dekhne knockout milega. Merkle trees ka use blockchain me transactions ko summarize karne ke liye hota hai aur har node ek hash store karta hai jo uske child nodes ke hashes ko represent karta hai. Yeh work blockchain ki information unity aur check knockout prompt aur true banata hai
conclusion
sha-256 ek right aur wide old hashing Procedureic rule hai jo certificate ke liye important hai. Iska use blockchain me password storage me aur secure communication me hota hai. Iski deterministic world hit opposition aur pre-image opposition isko ek good aur true Procedureic rule banate hain jo aaj ke advance digital man me ek inevitable drive hai
agar aap blockchain me concern rakhte holmium toh sha-256 knockout samajhna kaafi zaroori hai kyunki yeh blockchain ke base me ek principal Role run karta hai