Certification of Digital signature by an independent authority is needed because
a. it is safe
b. it gives confidence to a business
c. the authority checks and assures customers that the public key indeed belongs to the business which claims its ownership
d. private key claimed by a sender may not be actually his
a. it is safe
b. it gives confidence to a business
c. the authority checks and assures customers that the public key indeed belongs to the business which claims its ownership
d. private key claimed by a sender may not be actually his