Two users need to send each other emails over unsecured channels. The system should support the principle of non-repudiation. Which of the following should be used to sign the user-s certificates?
A. RA
B. CA
C. CRL
D. CSR
Two users need to send each other emails over unsecured channels. The system should support the principle of non-repudiation. Which of the following should be used to sign the user-s certificates?
A. RA
B. CA
C. CRL
D. CSR
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