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When is a digital signature used?

A. For any online service
B. To pay for a course
C. For insurance purposes
D. To e-mail data


Sagot :

Final answer:

Digital Signatures are used to ensure message integrity and provide authenticity. They involve encryption using private keys and are essential for verifying sender authenticity.


Explanation:

Digital Signatures (DS) are utilized to provide Non-Repudiation and ensure the integrity of the plaintext. They involve Message Hashing and encryption of the Message Digest using the sender's private key. Cryptographic signing provides authenticity to messages, similar to traditional handwritten signatures, and is used in modern end-to-end encrypted messaging apps.


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