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Which security service is served by the process of encryption plaintext with the sender’s private key and decrypting cipher text with the sender’s public key?
Which security service is served by the process of encryption plaintext with the sender’s private key and decrypting cipher text with the sender’s public key?
A . Confidentiality
B . Integrity
C . Identification
D . Availability
Answer: A
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Answer should be B integrity. You use private key to provide digital signature which can be decrypted by your public key. Confidentiality is wrong because if you want to keep the data confidential but you encrypt it using your private key anyone that has your public key [and anyone can have your public key because it’s public] and decrypt the file which breaks the confidentiality.