Bob has encrypted a single-block secret message using AES-128, with an insecure key. You know the first 15-bytes of his 16-byte key are all Os, but the last byte is unknown. The ciphertext he produced is: 5beed72ac6c91e16e5a705cbb4cf4417.
As stated, you know his key is of the form (in hex): 000000000000000000000000000000xx (for unknown xx).
What is the plaintext that Bob encrypted? Answer in ASCII or hex (but note the hex decodes to ASCII).

Write a program that asks the user to enter the name of an input file. if the file does not exist, the program should prompt the user to enter the file name again. if the user types quit in any uppercase/lowercase combinations, then the program should exit without any further output.

Why is it uncommon for users to perform searches directly in database tables? a.)users are discouraged from interacting directly with tables because they might confuse tables with spreadsheets. b.) users are discouraged from interacting directly with tables because this may result in unintended changes to source data. c.)users do not have the technical skills required to perform searches directly in database tables. d.)users do not have the permissions required to perform searches directly in database tables.

What process should be followed while giving a reference? sam has given a reference of his previous manager in his resume. sam should him in advance that the potential employers will him.