SSCP: Systems Security Certified PractitionerDemo

By ISC · Question Mode

QuestionQ339

Cryptography

Which of the following best defines a digital envelope?

  • A A message that is encrypted and signed with a digital certificate.
  • B A message that is signed with a secret key and encrypted with the sender's private key.
  • C A message encrypted with a secret key attached with the message. The secret key is encrypted with the public key of the receiver.
  • D A message that is encrypted with the recipient's public key and signed with the sender's private key.
Explanation

A digital envelope encrypts the message with a symmetric secret/session key and encrypts that key with the recipient’s public key. The recipient uses the corresponding private key to recover the secret key and decrypt the message.

Learn more

Community Discussion

No comments yet. Be the first to start the discussion!