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(a) (i) If m = p·q·r where p, q, and r are prime numbers, what is Φ(m)?
(ii) Therefore, Determine Φ(440).
(b) Describe the following terms as used in cryptography:
(i) Avalanche effect (ii) Stream cipher (iii) Primitive root (iv) Confusion (v) Steganography ((c)
Suppose an elliptic curve encryption/decryption scheme. The cryptosystem parameters are E5(1,6) and G=(2,4). B's secret key is nB=2.
(i) Find B's public key PB.
(ii) A wishes to encrypt the message Pm=(0,2) and selects the random value k=2. Determine the ciphertext Cm.
Describe what the FTAM services are. FTAM stand for the File Transfer Access and Management: FTAM is an ISO application protocol which performs the operations on files such as.
LOCAL TALK Apple discovered the LAN technology that uses bus topology. Its interface is added with all Macintosh computers. It has very low speed i.e. 230.4Kbps. Also it is ch
Innovative nature of triple key management The triple key management scheme provides secure services by combining different techniques whic contribute to the security and priv
(a) Using Fermat's theorem, find 3 201 mod 11. (b) Explain how the Diffie-Hellman key agreement protocol works and what its purpose and main properties are. Consider a Dif
Question: a) Give two reasons why the building-block approach is favoured to the traditional network design approach. b) With reference to network monitoring parameters, dis
which security protocols are predominantly used in web-based e-commerce
the meaning Digital Signatures
UDP ENCAPSULATION As given in the figure below, UDP packet is included in IP datagram and the IP datagram is then attached in the Frame.
Network security has become much more complex than ever before. New types and sources of network security threats, always-on high-speed Internet connections, wireless networking, a
Ask quIf you are pinging a web server from a user’s client PC, how might the statistical information provided by ping be useful to you?estion #Minimum 100 words accepted#
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