RU2017106105A - Способы безопасного генерирования криптограмм - Google Patents

Способы безопасного генерирования криптограмм Download PDF

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RU2017106105A
RU2017106105A RU2017106105A RU2017106105A RU2017106105A RU 2017106105 A RU2017106105 A RU 2017106105A RU 2017106105 A RU2017106105 A RU 2017106105A RU 2017106105 A RU2017106105 A RU 2017106105A RU 2017106105 A RU2017106105 A RU 2017106105A
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key
cryptogram
computer
user device
server
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RU2017106105A
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RU2710897C2 (ru
RU2017106105A3 (ru
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СЭН Эрик ЛЕ
Джеймс ГОРДОН
Роопеш ДЖОШИ
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Виза Интернэшнл Сервис Ассосиэйшн
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    • 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
    • H04L9/321—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 a third party or a trusted authority
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
    • H04L63/061—Network architectures or network communication protocols for network security for supporting key management in a packet data network for key exchange, e.g. in peer-to-peer networks
    • 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
    • H04L9/0861—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
    • H04L9/08—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
    • H04L9/14—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using a plurality of keys or algorithms

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Storage Device Security (AREA)

Claims (83)

1. Осуществляемый с помощью компьютера способ, включающий:
определение пользовательским устройством пары кратковременных ключей, содержащей кратковременный открытый ключ и кратковременный закрытый ключ;
отправку пользовательским устройством сообщения с запросом предоставления, содержащего кратковременный открытый ключ, на компьютер сервера предоставления;
прием пользовательским устройством сообщения с ответом предоставления, содержащего зашифрованные удостоверяющие данные, от компьютера сервера предоставления;
определение пользовательским устройством ответного совместно используемого секретного ключа с помощью кратковременного закрытого ключа и статического открытого ключа сервера;
расшифровку пользовательским устройством зашифрованных удостоверяющих данных с помощью ответного совместно используемого секретного ключа для определения удостоверяющих данных;
получение параметров формирования ключа из удостоверяющих данных; и
формирование первого криптограммного ключа из ответного совместно используемого секретного ключа с помощью параметров формирования ключа, при этом первый криптограммный ключ используют для генерирования первой криптограммы для использования в первой защищенной связи с компьютером проверяющего подлинность сервера.
2. Осуществляемый с помощью компьютера способ по п. 1, в котором удостоверяющие данные содержат ключ ограниченного использования, используемый пользовательским устройством для формирования первого криптограммного ключа, при этом компьютер проверяющего подлинность сервера имеет доступ к ключу ограниченного использования.
3. Осуществляемый с помощью компьютера способ по п. 1, дополнительно включающий:
генерирование пользовательским устройством запросного совместно используемого секретного ключа с помощью кратковременного закрытого ключа и статического открытого ключа сервера; и
шифрование пользовательским устройством данных запроса с помощью запросного совместно используемого секретного ключа для получения зашифрованных данных запроса, при этом сообщение с запросом предоставления содержит зашифрованные данные запроса.
4. Осуществляемый с помощью компьютера способ по п. 1, в котором ответный совместно используемый секретный ключ определяют с помощью заблокированного ключа, который формируют из статического открытого ключа сервера, используя при этом статический открытый ключ сервера для определения ответного совместно используемого секретного ключа, и при этом сообщение с ответом предоставления также содержит заблокированный ключ.
5. Осуществляемый с помощью компьютера способ по п. 1, в котором ответный совместно используемый секретный ключ определяют без заблокированного ключа, при этом удостоверяющие данные содержат криптографический объект nonce, и при этом первый криптограммный ключ дополнительно формируют с помощью криптографического объекта nonce.
6. Осуществляемый с помощью компьютера способ по п. 1, дополнительно включающий:
обновление пользовательским устройством ответного совместно используемого секретного ключа для определения обновленного совместно используемого секретного ключа с помощью параметров обновления, при этом удостоверяющие данные содержат параметры обновления;
формирование пользовательским устройством второго криптограммного ключа с помощью обновленного совместно используемого секретного ключа и параметров формирования ключа;
генерирование пользовательским устройством второй криптограммы с помощью второго криптограммного ключа; и
осуществление пользовательским устройством второй защищенной связи с компьютером проверяющего подлинность сервера с помощью второй криптограммы.
7. Осуществляемый с помощью компьютера способ по п. 6, дополнительно включающий:
генерирование пользовательским устройством новых совместно используемых секретных ключей для каждого из множества новых защищенных сеансов связи, при этом каждый новый совместно используемый секретный ключ генерируют с помощью предыдущего совместно используемого секретного ключа и параметров обновления;
формирование пользовательским устройством новых криптограммных ключей с помощью новых совместно используемых секретных ключей и параметров формирования ключей;
генерирование пользовательским устройством новых криптограмм с помощью нового криптограммного ключа; и
осуществление пользовательским устройством новых защищенных сеансов связи с компьютером проверяющего подлинность сервера с помощью новых криптограмм.
8. Осуществляемый с помощью компьютера способ по п. 6, в котором вторую криптограмму дополнительно генерируют с помощью данных на основе параметров формирования криптограммы, содержащихся в удостоверяющих данных, и при этом вторая защищенная связь представляет собой запрос авторизации, при этом вторая криптограмма аутентифицирует по меньшей мере один элемент запроса авторизации.
9. Осуществляемый с помощью компьютера способ по п. 6, в котором при генерировании обновленного криптограммного ключа используют параметры формирования ключа, содержащиеся в удостоверяющих данных.
10. Осуществляемый с помощью компьютера способ по п. 1, дополнительно включающий:
прием пользовательским устройством первых регистрационных данных;
шифрование пользовательским устройством первых регистрационных данных с помощью первого криптограммного ключа для генерирования первой криптограммы, при этом первая криптограмма представляет собой криптограмму регистрации; и
отправку пользовательским устройством криптограммы регистрации на компьютер сервера регистрации, при этом компьютер сервера регистрации аутентифицирует пользовательское устройство с помощью криптограммы регистрации.
11. Осуществляемый с помощью компьютера способ по п. 10, дополнительно включающий:
сохранение пользовательским устройством ответного совместно используемого секретного ключа, и при этом отправка криптограммы регистрации на компьютер сервера включает шифрование криптограммы регистрации с помощью ответного совместно используемого секретного ключа.
12. Осуществляемый с помощью компьютера способ по п. 10, дополнительно включающий:
прием пользовательским устройством вторых регистрационных данных;
генерирование пользовательским устройством второй пары кратковременных ключей, содержащей второй кратковременный открытый ключ и второй кратковременный закрытый ключ;
отправку пользовательским устройством на компьютер сервера регистрации сообщения с запросом обновления, содержащего криптограмму регистрации и второй кратковременный открытый ключ;
прием пользовательским устройством сообщения с ответом обновления, содержащего вторые параметры формирования ключа;
формирование пользовательским устройством второго криптограммного ключа с помощью вторых параметров формирования ключа;
генерирование пользовательским устройством второй криптограммы регистрации с помощью второго криптограммного ключа и вторых регистрационных данных; и
отправку пользовательским устройством второй криптограммы регистрации на компьютер сервера, при этом вторая криптограмма регистрации аутентифицирует пользовательское устройство.
13. Осуществляемый с помощью компьютера способ по п. 12, в котором сообщение с запросом обновления дополнительно содержит хеш вторых регистрационных данных.
14. Осуществляемый с помощью компьютера способ, включающий:
прием компьютером сервера сообщения с запросом предоставления, содержащего кратковременный открытый ключ, от пользовательского устройства;
определение компьютером сервера запросного совместно используемого секретного ключа с помощью кратковременного открытого ключа и статического закрытого ключа сервера;
генерирование компьютером сервера ответного совместно используемого секретного ключа с помощью статического закрытого ключа компьютера сервера и кратковременного открытого ключа;
получение параметров формирования ключа для формирования первого криптограммного ключа из ответного совместно используемого секретного ключа;
шифрование компьютером сервера удостоверяющих данных с помощью второго совместно используемого секретного ключа для определения зашифрованных данных ответа, при этом удостоверяющие данные содержат параметры формирования ключа; и
отправку компьютером сервера на пользовательское устройство сообщения с ответом предоставления, содержащего зашифрованные данные ответа.
15. Осуществляемый с помощью компьютера способ по п. 14, в котором компьютер сервера функционирует как проверяющий подлинность сервер, при этом способ дополнительно включает:
прием компьютером сервера от пользовательского устройства криптограммы пользователя для подтверждения защищенной связи;
формирование первого криптограммного ключа из ответного совместно используемого секретного ключа с помощью параметров формирования ключа;
генерирование первой криптограммы с помощью первого криптограммного ключа и параметров формирования криптограммы, при этом удостоверяющие данные содержат параметры формирования криптограммы; и
проверку компьютером сервера подлинности криптограммы пользователя путем сравнения криптограммы пользователя с первой криптограммой.
16. Осуществляемый с помощью компьютера способ по п. 15, дополнительно включающий:
обновление компьютером сервера ответного совместно используемого секретного ключа для определения обновленного совместно используемого секретного ключа;
прием компьютером сервера от пользовательского устройства новой криптограммы для подтверждения новой защищенной связи;
формирование второго криптограммного ключа из обновленного совместно используемого секретного ключа с помощью параметров формирования ключа;
генерирование второй криптограммы с помощью второго криптограммного ключа и параметров формирования криптограммы; и
проверку компьютером сервера подлинности новой криптограммы путем сравнения новой криптограммы со второй криптограммой.
17. Осуществляемый с помощью компьютера способ по п. 14, в котором компьютер сервера функционирует как сервер регистрации, при этом способ дополнительно включает:
предоставление компьютером сервера первых регистрационных данных на пользовательское устройство;
прием компьютером сервера криптограммы регистрации пользователя от пользовательского устройства;
формирование первого криптограммного ключа из ответного совместно используемого секретного ключа с помощью параметров формирования ключа;
шифрование пользовательским устройством первых регистрационных данных с помощью первого криптограммного ключа для генерирования первой криптограммы регистрации; и
проверку компьютером сервера криптограммы регистрации пользователя путем сравнения криптограммы регистрации пользователя с первой криптограммой регистрации, при этом пользовательское устройство аутентифицируют, если первая криптограмма регистрации проходит проверку.
18. Осуществляемый с помощью компьютера способ по п. 17, в котором первые регистрационные данные содержат одноразовый пароль.
19. Осуществляемый с помощью компьютера способ по п. 17, в котором компьютер сервера функционирует как сервер обновления, и при этом способ дополнительно включает:
отправку вторых регистрационных данных на пользовательское устройство;
прием сообщения с запросом обновления от пользовательского устройства, при этом сообщение с запросом обновления содержит криптограмму регистрации пользователя и второй кратковременный открытый ключ от пользовательского устройства;
проверку подлинности криптограммы регистрации пользователя;
отправку сообщения с ответом обновления на пользовательское устройство, содержащего вторые параметры формирования ключа;
прием второй криптограммы регистрации от пользовательского устройства; и
проверку подлинности второй криптограммы регистрации с помощью вторых регистрационных данных.
20. Компьютерная система, содержащая:
память, которая хранит выполняемые компьютером команды; и
процессор, выполненный с возможностью осуществления доступа к памяти и исполнения выполняемых компьютером команд для:
определения пары кратковременных ключей, содержащей кратковременный открытый ключ и кратковременный закрытый ключ;
отправки сообщения с запросом предоставления, содержащего кратковременный открытый ключ, на компьютер сервера предоставления;
приема сообщения с ответом предоставления, содержащего зашифрованные удостоверяющие данные, от компьютера сервера предоставления;
определения ответного совместно используемого секретного ключа с помощью кратковременного закрытого ключа и статического открытого ключа сервера;
расшифровки зашифрованных удостоверяющих данных с помощью ответного совместно используемого секретного ключа для определения удостоверяющих данных;
получения параметров формирования ключа из удостоверяющих данных; и
формирования первого криптограммного ключа из ответного совместно используемого секретного ключа с помощью параметров формирования ключа, при этом первый криптограммный ключ используют для генерирования первой криптограммы для использования в первой защищенной связи с компьютером проверяющего подлинность сервера.
RU2017106105A 2014-08-29 2015-08-31 Способы безопасного генерирования криптограмм RU2710897C2 (ru)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201462044172P 2014-08-29 2014-08-29
US62/044,172 2014-08-29
PCT/US2015/047824 WO2016033610A1 (en) 2014-08-29 2015-08-31 Methods for secure cryptogram generation

Publications (3)

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RU2017106105A true RU2017106105A (ru) 2018-10-01
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