DataStructures / Cyber Security Interview Questions
What is a Digital Signature?
A digital signature is a cryptographic mechanism that proves a message or document came from a specific sender and hasn't been altered since it was signed.
It works by hashing the document, then encrypting that hash with the sender's private key. The recipient decrypts the signature using the sender's public key and compares it to a fresh hash of the received document; a match confirms authenticity and integrity.
signature = encrypt(hash(document), sender_private_key) is_valid = (decrypt(signature, sender_public_key) == hash(received_document))
Digital signatures are used in code signing, signed emails, and legal document platforms, and they provide non-repudiation, meaning the sender can't credibly deny having signed the document.
Invest now in Acorns!!! 🚀
Join Acorns and get your $5 bonus!
Acorns is a micro-investing app that automatically invests your "spare change" from daily purchases into diversified, expert-built portfolios of ETFs. It is designed for beginners, allowing you to start investing with as little as $5. The service automates saving and investing. Disclosure: I may receive a referral bonus.
Invest now!!! Get Free equity stock (US, UK only)!
Use Robinhood app to invest in stocks. It is safe and secure. Use the Referral link to claim your free stock when you sign up!.
The Robinhood app makes it easy to trade stocks, crypto and more.
Webull! Receive free stock by signing up using the link: Webull signup.
More Related questions...
