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BR112018016810A2 - método e sistema implementado por computador para criptografia de dados em um dispositivo eletrônico, dispositivo eletrônico e programa de computador - Google Patents

método e sistema implementado por computador para criptografia de dados em um dispositivo eletrônico, dispositivo eletrônico e programa de computador

Info

Publication number
BR112018016810A2
BR112018016810A2 BR112018016810-6A BR112018016810A BR112018016810A2 BR 112018016810 A2 BR112018016810 A2 BR 112018016810A2 BR 112018016810 A BR112018016810 A BR 112018016810A BR 112018016810 A2 BR112018016810 A2 BR 112018016810A2
Authority
BR
Brazil
Prior art keywords
electronic device
key
computer
encrypting data
implemented method
Prior art date
Application number
BR112018016810-6A
Other languages
English (en)
Inventor
Steven Wright Craig
Savanah Stephane
Original Assignee
nChain Holdings Limited
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
Priority claimed from GBGB1603122.1A external-priority patent/GB201603122D0/en
Application filed by nChain Holdings Limited filed Critical nChain Holdings Limited
Publication of BR112018016810A2 publication Critical patent/BR112018016810A2/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
    • H04L9/0838—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
    • 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
    • H04L9/085—Secret sharing or secret splitting, e.g. threshold schemes
    • 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
    • H04L9/30—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
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
    • H04L9/3252—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures using DSA or related signature schemes, e.g. elliptic based signatures, ElGamal or Schnorr schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Optimization (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Algebra (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Computing Systems (AREA)
  • Storage Device Security (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Computer And Data Communications (AREA)

Abstract

um método (400) de criptografia de dados em um dispositivo eletrônico (3), em que o dispositivo eletrônico é associado com um dispositivo de chave (5). cada dispositivo é associado a um par de criptografia assimétrica, cada par incluindo uma primeira chave privada e uma primeira chave pública. as respectivas segundas chaves privadas e públicas podem ser determinadas com base na primeira chave privada, primeira chave pública e uma chave determinística. um segredo pode ser determinado com base nas segundas chaves privadas e públicas. os dados no dispositivo eletrônico (3) podem ser criptografados usando o segredo determinado ou uma chave de criptografia que é baseada no segredo. informações indicativas da chave determinística podem ser enviadas para o dispositivo de chave (5) onde a informação pode ser armazenada.
BR112018016810-6A 2016-02-23 2017-02-14 método e sistema implementado por computador para criptografia de dados em um dispositivo eletrônico, dispositivo eletrônico e programa de computador BR112018016810A2 (pt)

Applications Claiming Priority (7)

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
GBGB1603122.1A GB201603122D0 (en) 2016-02-23 2016-02-23 Personal device security using cryptocurrency wallets
GB1603117.1 2016-02-23
GB1603122.1 2016-02-23
GB201619301 2016-11-15
GB1619301.3 2016-11-15
PCT/IB2017/050815 WO2017145002A1 (en) 2016-02-23 2017-02-14 Personal device security using elliptic curve cryptography for secret sharing

Publications (1)

Publication Number Publication Date
BR112018016810A2 true BR112018016810A2 (pt) 2018-12-26

Family

ID=58108693

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112018016810-6A BR112018016810A2 (pt) 2016-02-23 2017-02-14 método e sistema implementado por computador para criptografia de dados em um dispositivo eletrônico, dispositivo eletrônico e programa de computador

Country Status (16)

Country Link
US (3) US10715336B2 (pt)
EP (1) EP3257006B1 (pt)
JP (1) JP6528008B2 (pt)
KR (1) KR101999188B1 (pt)
CN (2) CN115225268A (pt)
AU (1) AU2017222421B2 (pt)
BR (1) BR112018016810A2 (pt)
CA (1) CA3014748C (pt)
EA (1) EA201891822A1 (pt)
GB (1) GB2560274C (pt)
IL (1) IL261212B (pt)
MX (1) MX2018010044A (pt)
PH (1) PH12018501745A1 (pt)
SG (1) SG11201806702XA (pt)
WO (1) WO2017145002A1 (pt)
ZA (1) ZA201805019B (pt)

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