DE3888558T2 - Gesicherte Nachrichtensysteme. - Google Patents

Gesicherte Nachrichtensysteme.

Info

Publication number
DE3888558T2
DE3888558T2 DE3888558T DE3888558T DE3888558T2 DE 3888558 T2 DE3888558 T2 DE 3888558T2 DE 3888558 T DE3888558 T DE 3888558T DE 3888558 T DE3888558 T DE 3888558T DE 3888558 T2 DE3888558 T2 DE 3888558T2
Authority
DE
Germany
Prior art keywords
messaging systems
secure messaging
secure
systems
messaging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE3888558T
Other languages
English (en)
Other versions
DE3888558D1 (de
Inventor
Alan David Marshall
Graeme John Proudler
Christopher John Mitchell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HP Inc
Original Assignee
Hewlett Packard Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of DE3888558D1 publication Critical patent/DE3888558D1/de
Application granted granted Critical
Publication of DE3888558T2 publication Critical patent/DE3888558T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0891—Revocation or update of secret information, e.g. encryption key update or rekeying
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/0822—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) using key encryption key
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/083—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
    • H04L9/0833—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP] involving conference or group key
    • H04L9/0836—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP] involving conference or group key using tree structure or hierarchical structure
DE3888558T 1987-03-03 1988-01-18 Gesicherte Nachrichtensysteme. Expired - Fee Related DE3888558T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878704920A GB8704920D0 (en) 1987-03-03 1987-03-03 Secure messaging system

Publications (2)

Publication Number Publication Date
DE3888558D1 DE3888558D1 (de) 1994-04-28
DE3888558T2 true DE3888558T2 (de) 1994-06-30

Family

ID=10613228

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3888558T Expired - Fee Related DE3888558T2 (de) 1987-03-03 1988-01-18 Gesicherte Nachrichtensysteme.

Country Status (5)

Country Link
US (1) US4888800A (de)
EP (1) EP0281224B1 (de)
JP (1) JP2730902B2 (de)
DE (1) DE3888558T2 (de)
GB (1) GB8704920D0 (de)

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Also Published As

Publication number Publication date
DE3888558D1 (de) 1994-04-28
US4888800A (en) 1989-12-19
JPS63226149A (ja) 1988-09-20
EP0281224B1 (de) 1994-03-23
EP0281224A3 (en) 1990-01-17
GB8704920D0 (en) 1987-04-08
JP2730902B2 (ja) 1998-03-25
EP0281224A2 (de) 1988-09-07

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