Encrypted key exchange

DH-EKE scheme

Encrypted Key Exchange (also known as EKE) is a family of password-authenticated key agreement methods described by Steven M. Bellovin and Michael Merritt.[1] Although several of the forms of EKE in this paper were later found to be flawed [clarification needed], the surviving, refined, and enhanced forms of EKE effectively make this the first method to amplify a shared password into a shared key, where the shared key may subsequently be used to provide a zero-knowledge password proof or other functions.

In the most general form of EKE, at least one party encrypts an ephemeral (one-time) public key using a password, and sends it to a second party, who decrypts it and uses it to negotiate a shared key with the first party.

A second paper describes Augmented-EKE,[2] and introduced the concept of augmented password-authenticated key agreement for client/server scenarios. Augmented methods have the added goal of ensuring that password verification data stolen from a server cannot be used by an attacker to masquerade as the client, unless the attacker first determines the password (e.g. by performing a brute force attack on the stolen data).

A version of EKE based on Diffie–Hellman, known as DH-EKE, has survived attack and has led to improved variations, such as the PAK family of methods in IEEE P1363.2.

Since the US patent on EKE expired in late 2011, an EAP authentication method using EKE was published as an IETF RFC.[3] The EAP method uses the Diffie–Hellman variant of EKE.

Patents

U.S. patent 5,241,599, owned by Lucent, describes the initial EKE method. It expired in October 2011.
U.S. patent 5,440,635, owned by Lucent, describes the augmented EKE method. It expired in August 2013.

See also

References

  1. ^ S. M. Bellovin; M. Merritt (May 1992). "Encrypted Key Exchange: Password-Based Protocols Secure Against Dictionary Attacks" (PDF). Proceedings of the I.E.E.E. Symposium on Research in Security and Privacy, Oakland.
  2. ^ S. M. Bellovin; M. Merritt (November 1993). "Augmented Encrypted Key Exchange: A Password-Based Protocol Secure Against Dictionary Attacks and Password File Compromise" (PDF). Proceedings of the 1st ACM Conference on Computer and Communications Security. ACM Press. pp. 244–250.
  3. ^ Y. Sheffer; G. Zorn; H. Tschofenig; S. Fluhrer (February 2011), An EAP Authentication Method Based on the Encrypted Key Exchange (EKE) Protocol.


Read other articles:

Anjing berjambul tiongkok

Chinese Crested Dog Hairless Chinese Crested Dog standing Nama panggilan Crested, Puff Negara asal Tiongkok[1] Ciri-ciri Klasifikasi & standar FCI Grup Seksi {{{fcisection}}} #{{{fcinum}}} standar Anjing Berjambul Tiongkok salah satu anjing ras kecil yang berasal dari Tiongkok dan dicirikan dengan tubuh yang kurus.[2] Pada abad ke-16, pelaut Tiongkok membawa anjing ini di kapal laut untuk berburu tikus dan menjualnya kepada penduduk lokal di sekitar pelabuhan yang mereka ...

 

Thahir bin Husain

Thahir bin HusainDirham di bawah pemerintahan Thahir bin Husain Gubernur KhurasanMasa jabatan821–822Penguasa monarkiAl-Ma'mun PenggantiThalhah bin ThahirGubernur MosulMasa jabatan813–814Penguasa monarkiAl-Ma'mun Pendahulual-Hasan bin Umar (812)PenggantiAli bin al-Hasan bin Sailh (814–817) Informasi pribadiLahirPushang, Kekaisaran Abbasiyah (kini Afganistan)Meninggal822Merv, Kekaisaan Abbasiyah (kini Turkmenistan)AnakThalhah bin ThahirAbdullah bin ThahirOrang tuaHusainSunting kot...

 

Ehud Barak

Barak beralih ke halaman ini. Untuk Barack, lihat Barack (disambiguasi). Ehud Barak Menteri PertahananPetahanaMulai menjabat Maret 28, 2007Perdana MenteriEhud OlmertBenjamin NetanyahuWakilMatan Vilnai PendahuluAmir PeretzPenggantiPetahanaMasa jabatan6 Juli 1999 – 7 Maret 2001Perdana MenteriHimselfWakilEfraim Sneh PendahuluMoshe ArensPenggantiBinyamin Ben-EliezerPerdana Menteri IsraelMasa jabatan6 Juli 1999 – 7 Maret 2001PresidenEzer Weizman Moshe KatsavWakilYitzhak M...

Ongjin County, South Hwanghae

This article is about a county in North Korea. For the county in South Korea, see Ongjin County, Incheon. This article includes a list of general references, but it lacks sufficient corresponding inline citations. Please help to improve this article by introducing more precise citations. (February 2014) (Learn how and when to remove this template message) County in South Hwanghae Province, North KoreaOngjin County 옹진군CountyKorean transcription(s) • Hanja甕津郡 �...

 

Unione Sportiva Palermo 1950-1951

Voce principale: Palermo Football Club. US PalermoStagione 1950-1951La formazione del Palermo nella stagione 1950-1951 Sport calcio Squadra Palermo Allenatore Giuseppe Viani Presidente Giuseppe Guazzardella, poi Raimondo Lanza di Trabia Serie A10º Maggiori presenzeCampionato: Di Maso (38) Miglior marcatoreCampionato: Di Maso (15) StadioLa Favorita 1949-1950 1951-1952 Si invita a seguire il modello di voce Questa voce raccoglie le informazioni riguardanti l'Unione Sportiva Palermo nelle...

 

Université Jagellon

Université JagellonneBlason de l'universitéHistoireFondation 1364StatutType Université publiqueNom officiel Uniwersytet JagiellońskiRégime linguistique PolonaisFondateur Casimir IIIRecteur Jacek Popiel (depuis 2020)Devise Plus ratio quam vis (« Plutôt convaincre que vaincre »)Membre de Réseau d'Utrecht, Groupe de Coimbra, EuropaeumSite web (pl + en + ru) www.uj.edu.plChiffres-clésÉtudiants 41 661 (2019)Effectif 7 246 (2019)LocalisationPa...

Internazionali Femminili di Palermo 2013

Internazionali Femminili di Palermo 2013 Sport Tennis Data 6 luglio – 14 luglio Edizione 26a Superficie Terra rossa Campioni Singolare Roberta Vinci Doppio Kristina Mladenovic / Katarzyna Piter 2012 2019 Gli Internazionali Femminili di Palermo 2013 (conosciuti anche come Snai Open) sono stati un torneo femminile di tennis giocato sulla terra rossa. È stata la 26ª edizione degli Internazionali Femminili di Palermo, che fa parte della categoria International nell'ambito del WTA Tour 2013. ...

 

Ta Oi people

Ethnic group from Vietnam and Laos This article possibly contains original research. Please improve it by verifying the claims made and adding inline citations. Statements consisting only of original research should be removed. (March 2009) (Learn how and when to remove this message) Ta OiTraditional Ta Oi skirt at the Vietnam Museum of Ethnology in HanoiRegions with significant populations Vietnam 52,356 (2019)[1]  Laos 45,991 (2015)[2]LanguagesTa'oih • Vietnamese...

 

Gustavo Gutiérrez

Peruvian philosopher, theologian, and priest For other people named Gustavo Gutiérrez, see Gustavo Gutiérrez (disambiguation). In this Spanish name, the first or paternal surname is Gutiérrez and the second or maternal family name is Merino. You can help expand this article with text translated from the corresponding article in Spanish. (November 2019) Click [show] for important translation instructions. View a machine-translated version of the Spanish article. Machine transla...

جودفري

جودفري (بالفرنسية: Godefroi de Bouillon)‏  معلومات شخصية الميلاد 1060بولوني سور مير الوفاة يوليو 18, 1100القدس سبب الوفاة قتل في معركة  مكان الدفن كنيسة القيامة  مواطنة مملكة بيت المقدس الإمبراطورية الرومانية المقدسة  إخوة وأخوات بالدوين الأول  أقرباء خودفري الرابع، دوق لو...

 

Pedro Pablo Hernández

Questa voce sugli argomenti calciatori argentini e calciatori cileni è solo un abbozzo. Contribuisci a migliorarla secondo le convenzioni di Wikipedia. Segui i suggerimenti dei progetti di riferimento 1, 2. Pablo Hernández Hernández in Nazionale (2017) Nazionalità  Argentina Cile (dal 2014) Altezza 184 cm Peso 79 kg Calcio Ruolo Attaccante Squadra  O'Higgins CarrieraSquadre di club1 2007-2008 Atlético Tucumán? (?)2008-2009 Racing Club? (?)2009-2010 De...

 

Shades of a Blue Orphanage

1972 studio album by Thin LizzyShades of a Blue OrphanageStudio album by Thin LizzyReleased10 March 1972[1]Recorded17 December 1971 - January 1972 [2]StudioDe Lane Lea Studios, Wembley, LondonGenreFolk rockhard rockLength40:09LabelDeccaProducerNick TauberThin Lizzy chronology Thin Lizzy(1971) Shades of a Blue Orphanage(1972) Vagabonds of the Western World(1973) Shades of a Blue Orphanage is the second studio album by Irish rock band Thin Lizzy, released in 1972. The t...

Glenn Beck

American political commentator (born 1964) Glenn BeckBeck in 2023BornGlenn Lee Beck[1][2] (1964-02-10) February 10, 1964 (age 60)Everett, Washington, U.S.Occupation(s)Talk show host, political commentator, producer[3] entrepreneur[4]Political partyRepublican (before 2014)Independent (2014–present)[5]MovementConservatismSpouses Claire ​ ​(m. 1983; div. 1994)​ Tania ​(m. 1999)&#...

 

Lista de unidades federativas do Brasil por taxa de fecundidade

Mapa das unidades federativas do Brasil por taxa de fecundidade em 2010.   + 2,55 filhos por mulher (média mundial)   + 2,10 filhos por mulher (taxa de reposição populacional)   até 2,10 filhos por mulher Esta é uma lista de unidades federativas do Brasil por taxa de fecundidade, índice que representa o número médio de filhos por mulher em idade fértil, que, por convenção, é entre 15 e 49 anos.[1] O Brasil é uma república federativa formada pela uni...

 

Sinoatrial node

Group of cells located in the wall of the right atrium of the heart Sinoatrial nodeSinoatrial node shown at 1. The rest of the conduction system of the heart is shown in blue.DetailsSystemElectrical conduction system of the heartArterySinoatrial nodal arteryIdentifiersLatinnodus sinuatrialisAcronym(s)SA nodeMeSHD012849TA98A12.1.06.003TA23953FMA9477Anatomical terminology[edit on Wikidata] The sinoatrial node (also known as the sinuatrial node, SA node or sinus node) is an oval shaped regio...

Get Over It (film)

2001 film by Tommy O'Haver Get Over ItTheatrical release posterDirected byTommy O'HaverWritten byR. Lee Fleming Jr.Produced by Paul Feldsher Michael Burns Marc Butan Starring Kirsten Dunst Ben Foster Melissa Sagemiller Sisqó Shane West Colin Hanks Swoosie Kurtz Ed Begley Jr. Martin Short CinematographyMaryse AlbertiEdited byJeff BetancourtMusic bySteve BartekProductioncompanies Ignite Entertainment Morpheus Distributed byMiramax FilmsRelease date March 9, 2001 (2001-03-09) Run...

 

The quiet Australians

Concept in politics This article is part of a series aboutScott Morrison Early life and career Member for Cook (2007–2024) Abbott government Abbott Ministry Turnbull government First Turnbull Ministry Second Turnbull Ministry 2018 Liberal Party leadership spills Prime Minister of Australia(International trips) First Ministry Second Ministry 2019–20 Australian fires Sports rorts affair COVID-19 pandemic in Australia Brereton Report Parliament House sexual misconduct allegations AUKUS 2022 ...

 

Mayank Agarwal

Indian cricketer (born 1991) Mayank AgarwalAgarwal in 2022Personal informationFull nameMayank Anurag AgarwalBorn (1991-02-16) 16 February 1991 (age 33)Bangalore, Karnataka, IndiaNicknameMonk[1]Height5 ft 9 in (1.75 m)BattingRight-handedBowlingRight-arm off breakRoleBatterInternational information National sideIndia (2018–2022)Test debut (cap 295)26 December 2018 v AustraliaLast Test12 March 2022 v Sri LankaODI debut (cap ...

大白鲨3

大白鲨3Jaws 3-D剧院上映海报基本资料导演乔·阿尔维斯（英语：Joe Alves）监制鲁珀特·希齐格（英语：Rupert Hitzig）艾伦·兰兹堡（英语：Alan Landsburg）编剧李察·麥森卡尔·戈特利布（英语：Carl Gottlieb）故事格登·特鲁布拉德（英语：Guerdon Trueblood）原著彼得·本奇利原创角色主演 丹尼斯·奎德 贝丝·阿姆斯特朗（英语：Bess Armstrong） 西蒙·麦考金代尔（英语：Simon MacCorkindale） �...

 

Mannlicher M1901

Semi-Automatic Pistol Mannlicher M1901 TypeSemi-Automatic PistolPlace of originAustria-HungaryService historyUsed bySee UsersWarsWorld War IProduction historyDesignerFerdinand MannlicherManufacturerŒ.W.G.Produced1901–1903No. built4,000VariantsMannlicher M1905SpecificationsCartridge7.63mm MannlicherActionDelayed blowbackMuzzle velocity1070 ft/s (326 m/s)Feed system8 round stripper clip into magazineSightsIron sights The M1901 Mannlicher Self-Loading, Semi-Auto...