Which of the following would best define a digital envelope?

Question

Options

• AA message that is encrypted and signed with a digital certificate.
• BA message that is signed with a secret key and encrypted with the sender's private key.
• CA message encrypted with a secret key attached with the message.
• DA message that is encrypted with the recipient's public key and signed with the sender's

• A
  8% (5)
• B
  3% (2)
• C
  87% (55)
• D
  2% (1)

Explanation

A digital envelope for a recipient is a combination of encrypted data and its encryption key in an encrypted form that has been prepared for use of the recipient. It consists of a hybrid encryption scheme in sealing a message, by encrypting the data and sending both it and a protected form of the key to the intended recipient, so that one else can open the message. In PKCS #7, it means first encrypting the data using a symmetric encryption algorithm and a secret key, and then encrypting the secret key using an asymmetric encryption algorithm and the public key of the intended recipient.

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