9 Which of the following is a current standard for PKI that specifies a strict hierarchical system for CAs issuing certificates? PKCS #2 X.509 O DES O SHA-1 2 pts D Question 10 Which of the following is the first step in the digital signature process where Mike sends a message to Sophie? a message digest of Mike's message is calculated using a hashing algorithm Sophic compares the message digest she calculated to Mikes's message Sophic encrypts Mike's message with Mike's public key the message digest is encrypted by Mike's private key Type here to search