Fisher kernel - Revision history

217.109.185.32: typo in url

2014-11-10T11:38:39Z

typo in url

← Older revision		Revision as of 13:38, 10 November 2014
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	~~In cryptography, a [[cryptosystem]]~~ is ~~called~~ a ~~"threshold cryptosystem", if in order to decrypt an encrypted message a number of parties exceeding a threshold~~ is ~~required~~ to ~~cooperate in the decryption [[Cryptographic protocol\|protocol]]~~. ~~The message~~ is ~~encrypted using a [[public key]]~~ and the corresponding private key is [[secret sharing\|shared]] among the participating parties. Let <math>n</math> be the number of parties. Such a system is called ''(t,n)''-threshold, if at least ''t'' of these parties can efficiently decrypt the ciphertext, while less than ''t'' have no useful information. Similarly it ~~is possible to define~~ '~~'(t,n)''-threshold [[Digital signature\|signature scheme]], where at least ''t'' parties are required for creating a signature~~.		The writer's name is Christy Brookins. Playing badminton is a factor that he is completely addicted to. Distributing manufacturing is where my main income comes from and it's something I really enjoy. Her family life in Alaska but her spouse desires them to move.<br><br>Here is my site :: [http://brazil.amor-amore.com/irboothe best psychics]

	~~Threshold versions of encryption schemes can be built for many public encryption schemes. The natural goal of such schemes is~~ to ~~be as secure as the original scheme~~. ~~Such threshold versions have been defined for:~~
	* [[RSA (algorithm)\|RSA]]
	* [[Pallier cryptosystem]]
	* [[Damgård–Jurik cryptosystem]]<~~ref~~>~~Ivan Damgård, Mads Jurik: [http://www.brics.dk/RS/03/16/index.html A Length-Flexible Threshold Cryptosystem with Applications]. ACISP 2003: 350-364~~<~~/ref~~>~~<ref>Ivan Damgård, Mads Jurik~~: [http://~~www~~.~~brics.dk/RS/00/45/ A Generalisation, a Simplification and Some Applications of Paillier's Probabilistic Public~~-~~Key System]. Public Key Cryptography 2001: 119-136</ref>~~
	* [[ElGamal]]

	~~== Application ==~~

	The most common application is in the storage of secrets in multiple locations to prevent the capture of the [[ciphertext]] and the subsequent performance of [[cryptanalysis]] on that cyphertext. Most often the secrets that are "split" are the secret key material of a [[public key cryptography]] key pair or the ciphertext of stored password hashes.

	Historically, only organizations with very valuable secrets, such as [[certificate authority\|certificate authorities]], militaries, and governments, would make use of the technology. However, in October 2012 after a number of large public website password ciphertext compromises, [[RSA_(security_firm)\|RSA Security]] announced that it would be releasing software that makes the technology available to the general public. <ref>{{cite news \|url=http://www.technologyreview.com/news/429498/to-keep-passwords-safe-from-hackers-just-break/ \|title=To Keep Passwords Safe from Hackers, Just Break Them into Bits \| author=Tom Simonite \|date=October 9, 2012 \|work=Technology Review \|accessdate=October 9, 2012}}</ref>

	~~== See also ==~~
	* [[Secret sharing]]
	* [[Threshold (disambiguation)]]
	* [[Distributed key generation]]
	* [[Broadcast encryption]]

	~~==References==~~
	~~{{Reflist}}~~

	~~{{Cryptography navbox\|public-key}}~~

	~~[[Category:Public-key cryptography]]~~


	~~{{crypto-stub}}~~

en>Qwertyus: /* Information retrieval */ reffix

2013-12-19T22:45:54Z

Information retrieval: reffix

← Older revision		Revision as of 00:45, 20 December 2013
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	~~Hi there~~, ~~I am Sophia~~. I'~~ve always loved residing in Kentucky but now I~~'~~m considering other options~~. ~~Credit authorising~~ is ~~how she tends~~ to ~~make~~ a ~~living~~. ~~What me and my family members love~~ is ~~bungee jumping but I've~~ been ~~using on new things lately~~.<br><br>~~My blog; real psychics [~~[http://www.~~taehyuna~~.~~net~~/xe/~~?document_srl~~=~~78721~~ http://www.~~taehyuna~~.~~net~~/]]		In cryptography, a [[cryptosystem]] is called a "threshold cryptosystem", if in order to decrypt an encrypted message a number of parties exceeding a threshold is required to cooperate in the decryption [[Cryptographic protocol\|protocol]]. The message is encrypted using a [[public key]] and the corresponding private key is [[secret sharing\|shared]] among the participating parties. Let <math>n</math> be the number of parties. Such a system is called ''(t,n)''-threshold, if at least ''t'' of these parties can efficiently decrypt the ciphertext, while less than ''t'' have no useful information. Similarly it is possible to define ''(t,n)''-threshold [[Digital signature\|signature scheme]], where at least ''t'' parties are required for creating a signature.

			Threshold versions of encryption schemes can be built for many public encryption schemes. The natural goal of such schemes is to be as secure as the original scheme. Such threshold versions have been defined for:
			* [[RSA (algorithm)\|RSA]]
			* [[Pallier cryptosystem]]
			* [[Damgård–Jurik cryptosystem]]<ref>Ivan Damgård, Mads Jurik: [http://www.brics.dk/RS/03/16/index.html A Length-Flexible Threshold Cryptosystem with Applications]. ACISP 2003: 350-364</ref><ref>Ivan Damgård, Mads Jurik: [http://www.brics.dk/RS/00/45/ A Generalisation, a Simplification and Some Applications of Paillier's Probabilistic Public-Key System]. Public Key Cryptography 2001: 119-136</ref>
			* [[ElGamal]]

			== Application ==

			The most common application is in the storage of secrets in multiple locations to prevent the capture of the [[ciphertext]] and the subsequent performance of [[cryptanalysis]] on that cyphertext. Most often the secrets that are "split" are the secret key material of a [[public key cryptography]] key pair or the ciphertext of stored password hashes.

			Historically, only organizations with very valuable secrets, such as [[certificate authority\|certificate authorities]], militaries, and governments, would make use of the technology. However, in October 2012 after a number of large public website password ciphertext compromises, [[RSA_(security_firm)\|RSA Security]] announced that it would be releasing software that makes the technology available to the general public. <ref>{{cite news \|url=http://www.technologyreview.com/news/429498/to-keep-passwords-safe-from-hackers-just-break/ \|title=To Keep Passwords Safe from Hackers, Just Break Them into Bits \| author=Tom Simonite \|date=October 9, 2012 \|work=Technology Review \|accessdate=October 9, 2012}}</ref>

			== See also ==
			* [[Secret sharing]]
			* [[Threshold (disambiguation)]]
			* [[Distributed key generation]]
			* [[Broadcast encryption]]

			==References==
			{{Reflist}}

			{{Cryptography navbox\|public-key}}

			[[Category:Public-key cryptography]]


			{{crypto-stub}}

217.109.185.32 at 15:13, 23 March 2012

2012-03-23T15:13:03Z

New page

Hi there, I am Sophia. I've always loved residing in Kentucky but now I'm considering other options. Credit authorising is how she tends to make a living. What me and my family members love is bungee jumping but I've been using on new things lately.<br><br>My blog; real psychics [[http://www.taehyuna.net/xe/?document_srl=78721 http://www.taehyuna.net/]]