Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Cryptographic Protocol shopping experience:
1. Compare - without doubt the biggest advantage that the Cryptographic Protocol offers shoppers today is the ability to compare thousands of Cryptographic Protocol at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.
2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about
3. Testimonials - don't know anybody that has bought a Cryptographic Protocol? Wrong! If the Cryptographic Protocol is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.
4. Questions - Got a question about Cryptographic Protocol then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....
5. Reputation - Never heard of the company selling Cryptographic Protocol? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Cryptographic Protocol and build up a picture of their reputation for sales, returns, customer service, delivery etc.
6. Returns - still worried that even after all of the above your Cryptographic Protocol wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.
7. Feedback - happy with your Cryptographic Protocol then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.
8. Security - check for the yellow padlock on the Cryptographic Protocol site before you buy, and the s after http:/ /i.e. https:// = a secure site
9. Contact - got a question about Cryptographic Protocol, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.
10. Payment - ready to pay for your Cryptographic Protocol, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.
A
security protocol (
cryptographic protocol or
encryption protocol) is an abstract or concrete
protocol (computing) that performs a information security-related function and applies
cryptographic methods.
A protocol describes how the algorithms should be used. A sufficiently detailed protocol includes details about data structures and representations, at which point it can be used to implement multiple, interoperable versions of a program.
Cryptographic protocols are widely used for secure application-level data transport. A cryptographic protocol usually incorporates at least some of these aspects:
- Key agreement or establishment
- Entity authentication
- Symmetric encryption and message authentication key (cryptography) material construction
- Secured application-level data transport
- Non-repudiation methods
For example, Transport Layer Security (TLS) is a cryptographic protocol that is used to secure web (
HTTP) connections. It has an entity authentication mechanism, based on the X.509 system; a key setup phase, where a symmetric encryption key is formed by employing public-key cryptography; and an application-level data transport function. These three aspects have important interconnections. Standard TLS does not have non-repudiation support.
There are other types of cryptographic protocols as well, and even the term itself has various different readings; Cryptographic
application protocols often use one or more underlying key agreements, which are also sometimes themselves referred to as "cryptographic protocols". For instance, TLS employs what is known as the Diffie-Hellman key exchange, which although it is only a part of TLS
per se, Diffie-Hellman may be seen as a complete cryptographic protocol in itself for other applications.
Cryptographic protocols can sometimes be
Formal verification on an abstract level.
Advanced cryptographic protocols
A wide variety of cryptographic protocols go beyond the traditional goals of data confidentiality, integrity, and authentication to also secure a variety of other desired characteristics of computer-mediated collaboration. Blind signature can be used for ecash and
digital credential to prove that a person holds an attribute or right without revealing that person's identity or the identities of parties that person transacted with. Time stamp can be used to prove that data (even if confidential) existed at a certain time. Secure multiparty computation can be used to compute answers (such as determining the highest bid in an auction) based on confidential data (such as private bids), so that when the protocol is complete the participants know only their own input and the answer.
Undeniable signature include interactive protocols that allow the signer to prove a forgery and limit who can verify the signature. Deniable encryption augments standard encryption by making it impossible for an attacker to mathematically prove the existence of a plaintext message.
Anonymous remailer create hard-to-trace communications.
See also
External links
- Secure protocols open repository
A
security protocol (
cryptographic protocol or
encryption protocol) is an abstract or concrete protocol (computing) that performs a information security-related function and applies
cryptographic methods.
A protocol describes how the algorithms should be used. A sufficiently detailed protocol includes details about data structures and representations, at which point it can be used to implement multiple, interoperable versions of a program.
Cryptographic protocols are widely used for secure application-level data transport. A cryptographic protocol usually incorporates at least some of these aspects:
For example, Transport Layer Security (TLS) is a cryptographic protocol that is used to secure web (
HTTP) connections. It has an entity authentication mechanism, based on the X.509 system; a key setup phase, where a symmetric encryption key is formed by employing public-key cryptography; and an application-level data transport function. These three aspects have important interconnections. Standard TLS does not have non-repudiation support.
There are other types of cryptographic protocols as well, and even the term itself has various different readings; Cryptographic
application protocols often use one or more underlying
key agreements, which are also sometimes themselves referred to as "cryptographic protocols". For instance, TLS employs what is known as the
Diffie-Hellman key exchange, which although it is only a part of TLS
per se, Diffie-Hellman may be seen as a complete cryptographic protocol in itself for other applications.
Cryptographic protocols can sometimes be Formal verification on an abstract level.
Advanced cryptographic protocols
A wide variety of cryptographic protocols go beyond the traditional goals of data confidentiality, integrity, and authentication to also secure a variety of other desired characteristics of computer-mediated collaboration. Blind signature can be used for ecash and
digital credential to prove that a person holds an attribute or right without revealing that person's identity or the identities of parties that person transacted with. Time stamp can be used to prove that data (even if confidential) existed at a certain time. Secure multiparty computation can be used to compute answers (such as determining the highest bid in an auction) based on confidential data (such as private bids), so that when the protocol is complete the participants know only their own input and the answer. Undeniable signature include interactive protocols that allow the signer to prove a forgery and limit who can verify the signature. Deniable encryption augments standard encryption by making it impossible for an attacker to mathematically prove the existence of a plaintext message. Anonymous remailer create hard-to-trace communications.
See also
External links
- Secure protocols open repository
