GK Question

technology hard mcq

Which cryptographic technique ensures that a message has not been altered during transmission?

  1. Encryption
  2. Hashing
  3. Digital Signature
  4. Both B and C

Answer: Both B and C

Hashing (e.g., SHA-256) generates fixed-size digest to detect changes; any modification alters the hash. Digital Signatures combine hashing with asymmetric encryption to also verify sender identity and provide non-repudiation. Both ensure integrity; signatures add authentication and legal validity.

Topic Cybersecurity
Exam Relevance Banking, UPSC, SSC JE
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