FR3098950B3 - "Method for secure data storage and system for implementing the method" - Google Patents

"Method for secure data storage and system for implementing the method" Download PDF

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Publication number
FR3098950B3
FR3098950B3 FR1908258A FR1908258A FR3098950B3 FR 3098950 B3 FR3098950 B3 FR 3098950B3 FR 1908258 A FR1908258 A FR 1908258A FR 1908258 A FR1908258 A FR 1908258A FR 3098950 B3 FR3098950 B3 FR 3098950B3
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FR
France
Prior art keywords
crumbs
group
groups
implementing
data storage
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
FR1908258A
Other languages
French (fr)
Other versions
FR3098950A3 (en
Inventor
Cyril Dever
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.)
Edgewhere
Original Assignee
Edgewhere
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 Edgewhere filed Critical Edgewhere
Priority to FR1908258A priority Critical patent/FR3098950B3/en
Priority to FR2007516A priority patent/FR3098953B1/en
Priority to PCT/FR2020/051295 priority patent/WO2021014081A1/en
Publication of FR3098950A3 publication Critical patent/FR3098950A3/en
Application granted granted Critical
Publication of FR3098950B3 publication Critical patent/FR3098950B3/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H04L9/085—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
    • H04L9/0816—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
    • 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
    • H04L9/0894—Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage
    • 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
    • H04L9/3236—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 using cryptographic hash functions
    • 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
    • H04L2209/16—Obfuscation or hiding, e.g. involving white box

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

TITRE : « Procédé de stockage sécurisé de données et système de mise en œuvre du procédé » Procédé de stockage sécurisé d’une donnée source (DS) d’un détenteur (To) avec la participation de tiers (Tj (j=1…m)) ayant chacun une clé publique (Kj) et une clé privée ( . Le procédé caractérisé consiste à -obfusquer (Ob) la donnée source (DS) - fractionner (Fr) la donnée obfusquée (Ob (MS)) en miettes (Mi) (i = 1…n) - répartir les miettes (Mi) en groupes Gj (j=…m ou j=0,1…m), chaque miette étant présente dans au moins deux groupes Gj, le nombre de groupes étant égal au nombre de participants, - attribuer un groupe (Gj) à chaque participants (Pj) - crypter (Kj) les miettes (Mi) de chaque groupe (Gj) par le participant attributaire du groupe avec sa clé publique (Kj) - regrouper les miettes cryptées (Kj (Mi) → Σ Kj [Gj (Mi)]) - hacher (H) la donnée source obfusquée (Ob (DS)) par le détenteur (To) - composer la donnée transformée comme message (MC) combinant le hash H [Ob (DS)] et les miettes cryptées (Kj (Mi)) - faire sauvegarder le message combiné (MC). Figure 1TITLE: "Method for secure data storage and system for implementing the method" Method for secure storage of a source data (DS) of a holder (To) with the participation of third parties (Tj (j = 1… m )) each having a public key (Kj) and a private key (. The characterized method consists of -obfuscating (Ob) the source datum (DS) - splitting (Fr) the obfuscated datum (Ob (MS)) into crumbs (Mi ) (i = 1… n) - divide the crumbs (Mi) into groups Gj (j =… m or j = 0.1… m), each crumb being present in at least two groups Gj, the number of groups being equal to the number of participants, - assign a group (Gj) to each participant (Pj) - encrypt (Kj) the crumbs (Mi) of each group (Gj) by the participant assigned to the group with his public key (Kj) - group the encrypted crumbs (Kj (Mi) → Σ Kj [Gj (Mi)]) - hash (H) the source data obfuscated (Ob (DS)) by the holder (To) - compose the transformed data as a message (MC) combining the hash H [Ob (DS)] and crumbs cr ypties (Kj (Mi)) - save the combined message (MC). Figure 1

FR1908258A 2019-07-19 2019-07-19 "Method for secure data storage and system for implementing the method" Expired - Fee Related FR3098950B3 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR1908258A FR3098950B3 (en) 2019-07-19 2019-07-19 "Method for secure data storage and system for implementing the method"
FR2007516A FR3098953B1 (en) 2019-07-19 2020-07-17 Method for secure data storage and system for implementing the method
PCT/FR2020/051295 WO2021014081A1 (en) 2019-07-19 2020-07-17 Method for secure data storage and system for implementing said method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1908258A FR3098950B3 (en) 2019-07-19 2019-07-19 "Method for secure data storage and system for implementing the method"
FR1908258 2019-07-19

Publications (2)

Publication Number Publication Date
FR3098950A3 FR3098950A3 (en) 2021-01-22
FR3098950B3 true FR3098950B3 (en) 2021-07-30

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
FR1908258A Expired - Fee Related FR3098950B3 (en) 2019-07-19 2019-07-19 "Method for secure data storage and system for implementing the method"
FR2007516A Active FR3098953B1 (en) 2019-07-19 2020-07-17 Method for secure data storage and system for implementing the method

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR2007516A Active FR3098953B1 (en) 2019-07-19 2020-07-17 Method for secure data storage and system for implementing the method

Country Status (1)

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FR (2) FR3098950B3 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3360033B1 (en) * 2015-10-07 2023-03-15 Nec Corporation Method for storing a data file
EP3364328A1 (en) * 2015-10-16 2018-08-22 Tohoku Techno Arch Co., Ltd. Information processing system, information processing device, information processing method, and program
EP3379767B1 (en) * 2017-03-24 2021-01-13 Hewlett-Packard Development Company, L.P. Distributed authentication

Also Published As

Publication number Publication date
FR3098953A1 (en) 2021-01-22
FR3098953B1 (en) 2021-12-10
FR3098950A3 (en) 2021-01-22

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