CISSP-ISSAP: Information Systems Security Architecture Professional

By ISC · Question Mode

QuestionQ146

VerifiedInfrastructure and System Security

Which encryption mode below can make protocols lacking integrity protection even more vulnerable to replay attacks because every block is decrypted in precisely the same way?

Explanation

Electronic codebook (ECB) mode processes each block independently, so an identical ciphertext block always decrypts to the same plaintext block. Without integrity protection or replay prevention, an attacker can replay captured blocks and reproduce their original effect.

Community Discussion

No comments yet. Be the first to start the discussion!