Problems:

$1.$ A desktop publishing system $1$s utilized for creating documents across different organizations.

$1.$ Identify a publication type where the utmost priority is the confidentiality of data maintained within the system. $(0\mathrm{.}5)$

$11.$ Mention a publication type where ensuring the integrity of data is the primary concern. $(0\mathrm{.}5)$

m$.$ Highlight a scenario in which the most crucial aspect is the system's availability for document production. $(0\mathrm{.}5)$

You are a senior IT executive at your department responsible for the DES encryption key management. From the random key generator, you are given the secret key $($E$0$E$0$E$0$E$0$FlFlFlFl$)$hex to encrypt a critical message.

$1.$ What is is the output of the key after it is applied with the parity bit drop process shown in Figure $1?$ At this point, determine if it is a strong, weak, or semi$-$weak key. Provide a detailed explanation for your assessment. $(1\mathrm{.}25)$

$11.$ Using the key$-$permutation compression $2$ from Figure $2,$ re$-$evaluate whether this is a strong, weak or semi$-$weak key. Justify your answer thoroughly and explain the implications of using this key for encrypting the critical message. $(1\mathrm{.}25)$Figure $1$: Parity bit drop

Figure $2$: Key$-$Permutation Compression $2$