NounSingular public-key cryptography Plural uncountable public-key cryptography (uncountable)
SynonymsFrom Wiktionary under the GNU Free Documentation License. Public-key cryptography is a cryptographic approach which involves the use of asymmetric key algorithms instead of or in addition to symmetric key algorithms. Unlike symmetric key algorithms, it does not require a secure initial exchange of one or more secret keys to both sender and receiver. The asymmetric key algorithms are used to create a mathematically related key pair: a secret private key and a published public key. Use of these keys allows protection of the authenticity of a message by creating a digital signature of a message using the private key, which can be verified using the public key. It also allows protection of the confidentiality and integrity of a message, by public key encryption, encrypting the message using the public key, which can only be decrypted using the private key. Public key cryptography is a fundamental and widely used technology around the world. It is the approach which is employed by many cryptographic algorithms and cryptosystems. It underlies such Internet standards as Transport Layer Security (TLS) (successor to SSL), PGP, and GPG. From Wikipedia under the
GNU Free Documentation License how it will be if we could encrypt our gene with public key cryptography? Q. how it will be if we could encrypt our gene with public key cryptography? Asked by deepak - Thu Apr 3 07:08:19 2008 - - 2 Answers - 0 Comments A. go and ask ur mommy Answered by life`s like this - Thu Apr 3 13:32:54 2008 RSA Public Key Cryptography questions? Q. I have been interested in learning how RSA works for many years. Unfortunately, most of the information I found online was either not detailed enough (i.e. didn't explain anything) or was extremely detailed but assumed the reader was familiar with a vast array of theorems, algorithms, etc. When I was in 8th grade, this always became too frustrating and I decided to set it aside until later... Now I am in college and have decided to take another crack at trying to undrestand it. I've read through a ton of websites -- Wikipedia was very useful as it had links every other word to the various theorems you need. Right now, I have an understanding of the RSA algorithm in that I can create small keys, calculate the modulus, totient, e, d,… [cont.] Asked by Stephen - Sat May 2 14:15:05 2009 - - 1 Answers - 0 Comments A. I believe they use super-computers to test against the possible prime before each code goes active. Basically, the use of one of the prime location equations simply limits the field of possible numbers the computers will need to check for being prime. Also, the messages are decryptable; however, the RSA algorithm relies on the fact that no current mathematical or computational method exists to factor the product of two primes into the original values in a reasonable period of time. Some of the basic codes have been solved; they just required the use of numerous supercomputers over the period of several months. Answered by Rob L - Sat May 2 14:29:32 2009 what is mac spoofing?
Q. Can public and private key cryptography be useful in preventing it Asked by jarkh - Tue Dec 13 02:34:59 2005 - - 2 Answers - 0 Comments A. A MAC address is a predefined, but still changeable, hex number address of the network card inside your computer. A spoof is when someone changes thier computers MAC address to your address and attempts to gain access to your netwrok via this mac address. Yes public and private keys can help. Authentication is the only hope you have against mac address spoofing. EXAMPLE: A wireless router that is set up for access control looks at 3 things, the mac address, the computer name and a key (128 bit or cyphered) for authentication. If someone gets a mac and computer name of a system already authenticated to join the routers network the only thing keeping this computer from accessing your router is the keys. Preferably encryted keys. If you are… [cont.] Answered by C H - Tue Dec 13 02:50:02 2005 From Yahoo Answer Search: "public key cryptography" |
