Which block cipher mode of operation for encrypting data is simple and efficient but provides...

Electronic Codebook (ECB)is thesimplest modeof block cipher operation, but it encrypts each blockindependently, which results inidentical ciphertext for identical plaintext blocks— making itunsafe for use with structured or repetitive data.

NIST SP 800-38A (Recommendation for Block Cipher Modes of Operation):

“ECB reveals patterns in plaintext and should not be used when such patterns are meaningful and predictable.”

Though efficient, ECB lackssemantic securityand is rarely recommended in practice.

????WGU Course Alignment:

Domain:Cryptography

Topic:Evaluate block cipher modes for appropriate use cases