Exam 22: Internet Security Protocols and Standards

IPsec can assure that _________.

MIME is an extension to the old RFC 822 specification of an Internet mail format.

To protect the data,either the signature alone or the signature plus the message are mapped into printable ASCII characters using a scheme known as ________ or base64mapping.

The _______ is a directory lookup service that provides a mapping between the name of a host on the Internet and its numerical address.

In the case of ________ only the digital signature is encoded using base64.

A _________ is formed by taking the message digest of the content to be signed and then encrypting that with the private key of the signer.

_________ is a specification for cryptographically signing e-mail messages,permitting a signing domain to claim responsibility for a message in the mail stream.

The IAB included authentication and encryption as necessary security features in IPv6.

The default algorithms used for encrypting S/MIME messages are the triple DES and a public-key scheme known as _______.

DKIM has been widely adopted by a range of e-mail providers and many Internet service providers.

The ________ is housed in the user's computer and is referred to as a client e-mail program or a local network e-mail server.

The result of S/MIME encrypting the digest using DSS and the sender's private DSS key is the ________.

The ________ accepts the message submitted by a message user agent and enforces the policies of the hosting domain and the requirements of Internet standards.

In S/MIME each conventional key is used a total of three times.

The default algorithms used for signing S/MIME messages are SHA-1 and the _________.

A message store cannot be located on the same machine as the MUA.

Transport mode provides protection primarily for lower-layer protocols.

The ______ is responsible for transferring the message from the MHS to the MS.

As an alternative the RSA public-key encryption algorithm can be used with either the SHA-1 or the MD5 message digest algorithm for forming signatures.

ESP supports two modes of use: transport and _________.