Your company's offshore office has determined that the foreign government keeps a copy of everything that leaves or enters the country. Your management perceives this as a possibility of trade secrets being stolen. As a preventive measure, you are asked to implement for your company a strict practice that all information to and from this office must be encrypted using 128-bit AES standard. This is an example of the company using:
a. Integrity measure against a possible tampering of information.
b. Availability measure to make data available to only the right party and not to other parties.
c. Digital Signatures to make sure that the information sent by its offshore office can be certified to be sent by that office.
d. Confidentiality measure to hide information from unwanted parties even if they can have access to data.