Cryptography and Network Security(BCSE309L)
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A company implements AES-128 encryption on IoT devices, but a researcher discovers that by measuring power consumption
Which mitigation technique would be
a) Using a larger key size (AES-256 instead of AES-128) b) Implementing operations to prevent data-dependent leakage c) Encrypting the plaintext d) Using
A company implements X.509 digital certificates for employee authentication. However, an attacker manages to perform a despite certificate-based authentication.
What is the most likely reason this attack was successful?
a) The certificate authority (CA) was b) The encryption used was RSA-1024, which is c) The attacker exploited a d) The certificate contained a weak
If a plaintext message is 528 bits , how many blocks will be needed?
a) 4 b) 5 c) 6 d) 7
What happens if two parties using IPsec do not establish a Security Association (SA)?
a) The connection fails because encryption keys are not exchanged.
b) The data is encrypted with a default key.
c) The authentication protocol switches to Kerberos.
d) The connection proceeds without encryption.
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