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Topic: Session key

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	Session key - Wikipedia, the free encyclopedia
		A session key is a key used for encrypting one message or a group of messages in a communication session.
		All secret key algorithms have this undesirable property.
		Like all cryptographic keys, session keys must be chosen so that they are unpredictable by an attacker.
	en.wikipedia.org /wiki/Session_key (284 words)

	Public-key cryptography - Wikipedia, the free encyclopedia
		For most of the history of cryptography, a key had to be kept absolutely secret and would be agreed upon beforehand using a secure, but non-cryptographic, method; for example, a face-to-face meeting or a trusted courier.
		Another potential weakness in the process of using asymmetric keys is the possibility of a 'Man in the middle attack', whereby the communication of public keys is intercepted by a third party and modified to provide the third party's own public keys instead.
		Whatever the cryptographic assurance of the protocols themselves, the association between a public key and its owner is ultimately a matter of subjective judgement on the part of the trusted third party, since the key is a mathematical entity whilst the owner and the connection between owner and key is not.
	en.wikipedia.org /wiki/Public_key (3048 words)

	[No title]
		Implementation Note The initial session key in both directions is derived from the credentials of the peer that initiated the call and the challenge used (if any) is the challenge from the first authentication.
		Implementation Note The initial session keys in both directions are derived from the credentials of the peer that initiated the call and the challenges used are those from the first authentication.
		Since the MPPE session keys are derived from user passwords (in the MS- CHAP-1 and MS-CHAP-2 cases), care should be taken to ensure the selection of strong passwords and passwords should be changed frequently.
	www.ietf.org /rfc/rfc3079.txt (2444 words)

	[No title]
		Since the same key is used for decryption, that is, to restore the original data, the algorithm is characterized as "single key" in contrast to "public key," which uses separate encryption and decryption keys.
		Keys and key components are generated in computers and are never displayed or output in human readable form.
		Key Components generated at the Programming Facility are encrypted using the SKIPJACK algorithm before they leave the computer, and are not decrypted until used in a Decrypt Processor.
	www.cosc.georgetown.edu /~denning/crypto/clipper/Key-Escrowing-Today.txt (7540 words)

	Key Establishment or Authentication?
		This is not entirely satisfactory because some protocols which set up session keys provide no authentication of one party to the other while other protocols designed to provide entity authentication involve no session key.
		A cryptographic key associated with B was used in a message received by A during the protocol run.
		It says nothing about a new session key and can clearly be satisfied by a protocol which is not concerned with key establishment.
	dimacs.rutgers.edu /Workshops/Security/program2/boyd/node4.html (393 words)

	Descriptions of Key Escrow Systems
		The sender transmits the session key KS to the receiver in a DRF, which is encrypted under the public key of the receiver.
		The private keys are stored in escrow, and the escrow agents could release either the shared key of two users or the private key of one user, which would enable access to all session keys used by that user.
		The DRC obtains a particular session key by participating in the key establishment protocol between the sender and receiver during a period of authorized surveillance.
	www.cosc.georgetown.edu /~denning/crypto/Appendix.html (12384 words)

	AspEncrypt.com - Crypto 101: Public-Key Cryptography
		The keys are mathematically related, yet it is computationally infeasible to deduce one from the other.
		Alice generates a random symmetric key (usually called a session key), encrypts it with Bob's public key and sends it to Bob.
		Alice generates a random session key, encrypts it with "Bob"'s public key (which is really Mallory's) and sends it to Bob.
	www.aspencrypt.com /crypto101_public.html (912 words)

	SKIP security (Site not responding. Last check: 2007-10-09)
		Key management -- the reliable assignment of the algorithmic keys that allow two parties to keep a message private -- is the critical activity of PKE.
		The first is to establish an authenticated session key prior to communication using one of several session key establishment protocols.
		The public key agreement algorithm is specified by the algorithm identifier that's used to identify the public key in the public key certificate or equivalent mechanism (for instance, secure DNS).
	www-128.ibm.com /developerworks/security/library/s-skip.html?dwzone=security (2525 words)

	Cryptography FAQ (06/10: Public Key Cryptography)
		At the receiver side, the session key is decrypted using the public-key algorithms and the recovered `plaintext' key is used to decrypt the message.
		The session key approach blurs the distinction between `keys' and `messages' -- in the scheme, the message includes the key, and the key itself is treated as an encryptable `message'.
		Keys are quadruples (p,q,e,d), with p a 256-bit prime number, q a 258-bit prime number, and d and e large numbers with (de - 1) divisible by (p-1)(q-1).
	www.faqs.org /faqs/cryptography-faq/part06 (1816 words)

	ssl_formatted_for_WISP_2
		While the computational cost of public key encryption is widely understood [Kaufman95], and has led to the development of session key caching across short-lived transactions as in the Web, there have been no detailed studies of the performance of key exchange in the Web.
		We find that 1) reusing a cached a session key significantly decreases the time to establish an SSL session, and that 2) in some situations the time to establish an SSL session is only slightly greater than the time to establish a TCP session when a cached session key is reused.
		An SSL key exchange is described by a pair, the public key (and its encryption algorithm) and the session key (and its encryption algorithm).
	www.cs.wisc.edu /~cao/WISP98/html-versions/artg/goldberg_et_al_ssl.html (1632 words)

	ASP.NET Is In Session
		Session variables are much like standard variables, but they differ in that they can be accessed from any ASP page and they are remembered from one page to another.
		A session variable is sort of a cousin to the cookie — both contain data about the user's session.
		In fact, the two could be seen as interrelated since standard session variables use a cookie to store a session ID. Then, that session ID is used to give us access to a set of variables unique for the user of the session identified.
	www.webmonkey.com /03/30/index3a.html (501 words)

	Bellare - key distribution
		The first paper in this line was Entity authentication and key distribution which looked at a two party setting and introduced a model for sessions.
		The three party case (Kerberos model) was addressed in the paper Provably secure session key distribution: the three party case.
		The key element in our approach is a modular treatment of the authentication problem in cryptographic protocols; this applies to the definition of security, to the design of the protocols, and to their analysis.
	www-cse.ucsd.edu /users/mihir/papers/key-distribution.html (799 words)

	State: Session lacks key to tax deadlock
		With only two bills passed midway through the session, lawmakers look for ways to move on to other issues.
		The fifth week of the nine-week session ends today, and the two chambers are miles apart in crafting a new budget -- the one issue the Constitution says they must resolve.
		If the budget is not adopted by then, the Legislature will be forced to call special sessions until the job is done.
	www.sptimes.com /2002/02/22/State/Session_lacks_key_to_.shtml (702 words)

	Page 2 - Developing Custom PHP Sessions
		Our function also generates a session key that is used to reference the session in the database.
		The session key, session value, users' IP, all the expiration details and last access information are stored.
		Finally, we set a cookie that will contain our session key and will be used for future reference to the database.
	www.devarticles.com /c/a/MySQL/Developing-Custom-PHP-Sessions/1 (837 words)

	The FIX Protocol Organization > Discussion Forums
		The Logon message itself does not use the old session encryption key NOR does it use the new session encryption key when using PGP-DES-MD5 which is what this is referring to.
		The language referring to "handling" messages encrypted with the old or new session key is related to non-Logon messages which are being transmitted from either side during this key change process.
		Your FIX system should have the same "understanding" of FIX session begin/end times (the only exception being abnormal termination in which you did not receive the Logout and have to derive the fact that the counterparty dropped).
	www.fixprotocol.org /discuss/read/91e790ba (400 words)

	RFC 2522 (rfc2522) - Photuris: Session-Key Management Protocol
		MD5 Hash MD5 [RFC-1321] is used as a pseudo-random-function for generating the key(s).
		When an individual key does not use all 128-bits of the last hash, any remaining unused (least significant) bits of the last hash are discarded.
		The form of the authenticated message is: MD5(key, keyfill, datagram, datafill, key, md5fill) where the key is the SPI session-key.
	www.faqs.org /rfcs/rfc2522.html (13881 words)

	Session key exchange (Site not responding. Last check: 2007-10-09)
		Encryption keys for data encryption and integrity checks are exchanged as a part of the PGP authentication stage.
		The session keys should be stored in a memory area which is common for all authentication types.
		This will make the encryption and integrity options independent of the authentication method used, as session keys will always be available when authentication has been performed.
	www.pvv.ntnu.no /~asgaut/crypto/thesis/node68.html (208 words)

	(WO 2004/049672) METHODS AND APPARATUS FOR DYNAMIC SESSION KEY GENERATION AND REKEYING IN MOBILE IP ... (Site not responding. Last check: 2007-10-09)
		The AAA server then sends a reply message (e.g., access-reply message) to the Home Agent, the reply message including the key information associated with the Mobile Node, thereby enabling the Home Agent to derive a shared key to be shared between the Mobile Node and the Home Agent from the key information.
		The Home Agent derives a key from the key information, the key being a shared key between the Mobile Node and the Home Agent.
		The Mobile Node then derives a key to be shared between the Mobile Node and the Home Agent from key information stored at the Mobile Node.
	www.wipo.int /ipdl/IPDL-CIMAGES/view/pct/getbykey5?KEY=04/49672.040902 (401 words)

	Roller-coaster session left key issues hanging - The Clarion-Ledger
		And two of the most emotional issues in the regular session — civil justice reform and voter identification — are about to erupt again in special session slated to begin Wednesday.
		At the conclusion of the session, Gov. Haley Barbour said decisions that are politically popular usually aren't good ones.
		Barbour has not said whether he plans to include in his special session call $300 million of bonds for universities, colleges and economic development projects that died during the session.
	www.clarionledger.com /apps/pbcs.dll/article?AID=/20040518/NEWS010504/405180369/1002/NEWS01 (891 words)

	Connected: An Internet Encyclopedia - Kerberos Protocol Overview (Site not responding. Last check: 2007-10-09)
		When a user logs in, the client transmits the username to the authentication server, along with the identity of the service the user desires to connect to, for example a fileserver.
		The authentication server constructs a ticket, which contains a randomly generated session key, encrypted with the fileserver's secret key, and sends it to the client as part of its credentials, which includes the session key encrypted with the client's secret key.
		If the user typed the right password, then the client can decrypt the session key, present the ticket to the fileserver, and use the shared secret session key to communicate between them.
	ie.activedomain.org /72.htm (408 words)

	UOW - Session and Key Dates (Site not responding. Last check: 2007-10-09)
		Last day to withdraw from single session subjects without academic penalty - subject deleted from record.
		*Session and enrolment dates for some postgraduate courses vary from the above.
		Refer to Key Dates (Non-standard) [pdf - 43kb].
	www.uow.edu.au /student/dates.html (292 words)

	[No title]
		As used in this document, this is distinguished from an asymmetric public/private Karn & Simpson Experimental [Page 1] RFC 2522 Photuris Protocol March 1999 key-pair.
		The first three phases (cookie, exchange, and identification) must be carried out in their entirety before any Security Association can be used.
		Minor changes are Karn & Simpson Experimental [Page 71] RFC 2522 Photuris Protocol March 1999 specified in transform padding format and key generation.
	www.ietf.org /rfc/rfc2522.txt (3022 words)

	session key - The Community's Center for Security (Site not responding. Last check: 2007-10-09)
		(I) In the context of symmetric encryption, a key that is temporary or is used for a relatively short period of time.
		(See: ephemeral key, key distribution center, master key.)
		(C) Usually, a session key is used for a defined period of communication between two computers, such as for the duration of a single connection or transaction set, or the key is used in an application that protects relatively large amounts of data and, therefore, needs to be rekeyed frequently.
	www.linuxsecurity.com /content/view/117197/141 (194 words)

	[No title]
		¨-Self-Healing Key Distribution with Revocation¡..¨$Presented by Matt Palombi 11/18/2004ó?¨Authors¨hXerox PARC - May 28, 2002 Jessica Staddon Sara Miner Matt Franklin Dirk Balfanz Michael Malkin Drew Deanó@¨ Session Keys¨zWe want to ensure secure multicast communication.
		One solution is having a common session key shared by all group members.óA¨Key Distribution¨¢A central group manager that periodically distributes new keys.
		How can this be conducted over an unreliable network, such as the Internet?óB¨Interactive Approach¨Require user to contact the group manager in order to resend the session key.
	www.cse.sc.edu /~huangct/CSCE715F04/paper6.ppt (560 words)

	Session.Key (Site not responding. Last check: 2007-10-09)
		Key is returned by Session factory methods to create a private static key to keep in calling classes to provide class, package or global scope session data.
		It is advisable to cache it as a static value of the calling class since xxx.class is (surprisingly) a non-trivial library operation using Class.forName (at least using the Sun 1.4 JVM).
		Class for the item - used to create when needed
	adept.marringtons.com /Java/Library/doc/javadoc/com/marringtons/util/Session.Key.html (109 words)

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