PT3268914T - Determinar um segredo comum para a troca segura de informação e chaves criptográficas determinísticas, hierárquicas - Google Patents

Determinar um segredo comum para a troca segura de informação e chaves criptográficas determinísticas, hierárquicas

Info

Publication number
PT3268914T
PT3268914T PT17708586T PT17708586T PT3268914T PT 3268914 T PT3268914 T PT 3268914T PT 17708586 T PT17708586 T PT 17708586T PT 17708586 T PT17708586 T PT 17708586T PT 3268914 T PT3268914 T PT 3268914T
Authority
PT
Portugal
Prior art keywords
hierarchical
determining
information
cryptographic keys
common secret
Prior art date
Application number
PT17708586T
Other languages
English (en)
Inventor
Steven Wright Craig
Savanah Stephane
Original Assignee
Nchain Holdings Ltd
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
Priority claimed from GBGB1603117.1A external-priority patent/GB201603117D0/en
Application filed by Nchain Holdings Ltd filed Critical Nchain Holdings Ltd
Publication of PT3268914T publication Critical patent/PT3268914T/pt

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
    • H04L9/0816—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)
    • H04L9/0825—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 asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates
    • 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
    • H04L9/0838—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these
    • H04L9/0841—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these involving Diffie-Hellman or related key agreement protocols
    • H04L9/0844—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these involving Diffie-Hellman or related key agreement protocols with user authentication or key authentication, e.g. ElGamal, MTI, MQV-Menezes-Qu-Vanstone protocol or Diffie-Hellman protocols using implicitly-certified keys
    • 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
    • H04L9/008—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols involving homomorphic encryption
    • 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
    • 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
    • H04L9/0838—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these
    • 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
    • H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
    • 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
    • H04L9/30—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
    • H04L9/3066—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy involving algebraic varieties, e.g. elliptic or hyper-elliptic curves
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/56—Financial cryptography, e.g. electronic payment or e-cash
PT17708586T 2016-02-23 2017-02-16 Determinar um segredo comum para a troca segura de informação e chaves criptográficas determinísticas, hierárquicas PT3268914T (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1603117.1A GB201603117D0 (en) 2016-02-23 2016-02-23 Determining a common secret for two blockchain nodes for the secure exchange of information
GB201619301 2016-11-15

Publications (1)

Publication Number Publication Date
PT3268914T true PT3268914T (pt) 2018-10-11

Family

ID=58213271

Family Applications (1)

Application Number Title Priority Date Filing Date
PT17708586T PT3268914T (pt) 2016-02-23 2017-02-16 Determinar um segredo comum para a troca segura de informação e chaves criptográficas determinísticas, hierárquicas

Country Status (27)

Country Link
US (3) US10652014B2 (pt)
EP (3) EP3268914B1 (pt)
JP (1) JP6515246B2 (pt)
KR (1) KR20180116278A (pt)
CN (2) CN115549887A (pt)
AU (1) AU2017223133B2 (pt)
BR (1) BR112018016245A2 (pt)
CA (1) CA3010116A1 (pt)
CL (1) CL2018002363A1 (pt)
CO (1) CO2018009236A2 (pt)
DK (1) DK3268914T3 (pt)
ES (1) ES2687182T3 (pt)
GB (1) GB2561728B (pt)
HK (1) HK1251840A1 (pt)
HR (1) HRP20181373T1 (pt)
HU (1) HUE040631T2 (pt)
IL (1) IL260895B (pt)
LT (1) LT3268914T (pt)
MX (1) MX2018009356A (pt)
PH (1) PH12018550109A1 (pt)
PL (1) PL3268914T3 (pt)
PT (1) PT3268914T (pt)
SG (2) SG11201805472RA (pt)
SI (1) SI3268914T1 (pt)
TW (2) TWI725124B (pt)
WO (1) WO2017145016A1 (pt)
ZA (1) ZA201708483B (pt)

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