Electronic Publishing
1) Write a note on Electronic Publishing.
Ans: – Electronic Publishing: – EP is the use of computers, rather than a traditional mechanism to produce and distribute information.
- This electronic mode of storing information helps to eliminate paper work, thus saving precious trees.
- EP products involve the manipulation of electronic material (text, image, video clip) during each of the three main parts of the product lifecycle: authoring, dissemination, and retrieval.
- EP includes information that is made available off-line (CD-ROM, DVD) on online (LAN, WAN, Internet etc.).
- EP excludes fax and another unedited email, video conferencing—contents. By using the internet.
- EP is becoming more prevalent because publishers are constantly looking to increase profits by reducing costs. EP is increasingly becoming easier to undertake.
2) Write a note on S-HTTP.
Ans: – S-HTTP (Secure HTTP):
- It is an extension to the Hypertext Transfer Protocol ( HTTP) that allows the secure exchange of files on the World Wide Web.
- Each S-HTTP file is either encrypted contains a digital certificateor both. For a given document, S-HTTP is an alternative to another well-known security protocol, Secure Sockets Layer (SSL).
- A major difference is that S-HTTP allows the client to send a certificate to authenticate the user whereas, using SSL, only the server can be authenticated.
- S-HTTP is more likely to be used in situations where the server represents a bank and requires authentication from the user that is more secure than a user id and password.
- Secure Hypertext Transfer Protocol (S-HTTP) is an obsolete alternative to the HTTPSprotocol for encrypting webcommunications carried over HTTP .
3) Write a note on Smart Cards.
Ans: – Smart Cards:
- Smart cards have been in existence: since the early 1980s and hold promise for secure transactions using existing infrastructure.
- Smart cards are credit and debit cards and other card products enhanced with microprocessors capable of holding more information than the traditional magnetic stripe.
Smart cards are basically of two types: i) Relationship-based smart cards ii) Electronic purse: which replace money, are also known as debit cards and electronic money.
i) Relationship-based smart cards: A relationship-based smart card is an enhancement of existing card services and /or the addition of new services that a financial institution delivers to its customers via a chip-based card or another device. – These new services may include access to multiple financial accounts, valueadded marketing programs, of other information cardholders may want to store on their card. The chip-based card is but one tool that will help alter mass marketing technologies to address each individual financial requirement.
4)Write a short note on Message Digest.
Ans: – A message digest is a value generated for a message that is unique to that message.
- A message digest is generated by passing the message through one-way cryptographic functions i.e one that cannot be reversed.
- Message digests are designed to protect the integrity of a piece of data or media to detect changes and alterations to any part of a message. They are a type of cryptography.
- Message digest hash numbers represent specific files containing the protected works. One message digest is assigned to particular data content.
- Message digests are encrypted with private keys creating a digital signature. – Message digests protect one-way hash algorithms taking random data and transmitting a set length hash value