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1. 发明申请

WO2021233649A1 SECURE ELEMENT FOR SECURELY PROCESSING DIGITAL INFORMATION 审中-公开
公开(公告)号：WO2021233649A1
公开(公告)日：2021-11-25
申请号：PCT/EP2021/060973
申请日：2021-04-27
申请人： NAGRAVISION S.A.
发明人： VILLEGAS, Karine , HAUTIER, Roan , GREMAUD, Fabien , FUCHS, Pascal
IPC分类号： G06F21/71 , G06F21/64 , H04L29/06
摘要： The secure element (100) has a secure processor (110) for securely processing the digital information stored in a memory (200) external to the secure element, and a loading and pre-processing system configured to load the digital information from the external memory (200) into the secure element (100), and pre-process said digital information by executing a cryptographic algorithm before processing said digital information by the secure processor (110). The system reads a version number of the digital information that has been loaded, from an internal memory (122) of the secure element (100), and uses said version number in executing the cryptographic algorithm.

2. 发明申请

WO2019129459A1 SECURE PROVISIONING OF KEYS 审中-公开
公开(公告)号：WO2019129459A1
公开(公告)日：2019-07-04
申请号：PCT/EP2018/083213
申请日：2018-11-30
申请人： NAGRAVISION S.A.
发明人： GREMAUD, Fabien , FISCHER, Nicolas , VILLEGAS, Karine , FISCHER, Jean-Bernard
IPC分类号： H04L9/32 , H04L9/00 , H04L9/08
CPC分类号： H04L9/3247 , H04L9/006 , H04L9/0825 , H04L9/3263 , H04L9/3268
摘要： Methods and devices in accordance with the disclosure relate to the secure provision of one or more keys or key pairs to protect secret data for, or associated, with a computing device. The device is typically a computing device with at least one processor or processing module configured for executing one or more applications using the secret data. The present disclosure ensures secure key provisioning by ensuring that each key in a key pair, or at least one key among a plurality of keys is associated with a device or hardware module that is distinct to the device(s) or hardware module associated with the other or remaining keys. For asymmetric key provisioning, this relates to utilizing digital signatures verified by separate devices. For symmetric key provisioning, this relates to utilizing a secret key derivation function that will operates with secret seeds that are input from two separate sources.

3. 发明申请

WO2020114860A1 REMOTE ENFORCEMENT OF DEVICE MEMORY 审中-公开
公开(公告)号：WO2020114860A1
公开(公告)日：2020-06-11
申请号：PCT/EP2019/082737
申请日：2019-11-27
申请人： NAGRAVISION S.A.
发明人： GREMAUD, Fabien , FUCHS, Pascal , VILLEGAS, Karine , PERRINE, Jérôme , HAUTIER, Roan
IPC分类号： G06F21/74 , G06F21/78
摘要： A method for anti-replay protection of a memory of a device, wherein the memory is used by and external to a secure element of the device, the method comprising the following steps, wherein the steps are performed in the device after a content of the memory is modified: generating device state data indicative of a state of the content of the memory; transmitting the device state data to a remote system for updating an authentication key of the device stored in a data storage of the remote system and for use by the remote system in an authentication procedure; and providing authentication information based on the device state data from the secure element to the remote system in the authentication procedure between the device and the remote system to verify a validity of the content of the memory.

4. 发明申请

WO2021213951A1 METHOD FOR PROCESSING DIGITAL INFORMATION 审中-公开
公开(公告)号：WO2021213951A1
公开(公告)日：2021-10-28
申请号：PCT/EP2021/060019
申请日：2021-04-19
申请人： NAGRAVISION S.A.
发明人： VILLEGAS, Karine , HAUTIER, Roan , FUCHS, Pascal , GREMAUD, Fabien
IPC分类号： G06F21/44 , G06F21/51 , G06F21/60 , G06F21/62 , G06F21/64
摘要： The digital information is stored in a plurality of segments (Si) in an external memory. The method is performed by a processing device and comprises the steps of : loading (S50) a first integrity table (MAC-Table 1) containing a plurality of first integrity elements (Ai) respectively authenticating the plurality of segments of digital information (Si), and an associated digital signature (SIG) of said plurality of first integrity elements (Ai), from the external memory; verifying (S51) the digital signature (SIG) associated with the first integrity table (MAC-Table 1), loading (S54) segments of digital information ([Si]) in a protected form from the external memory to the processing device.

5. 发明申请

WO2021198035A1 METHOD FOR SECURELY PROCESSING DIGITAL INFORMATION IN A SECURE ELEMENT 审中-公开
公开(公告)号：WO2021198035A1
公开(公告)日：2021-10-07
申请号：PCT/EP2021/057819
申请日：2021-03-25
申请人： NAGRAVISION S.A.
发明人： HAUTIER, Roan , VILLEGAS, Karine
IPC分类号： G06F21/79 , G06F21/64 , G06F21/55 , G06F21/556
摘要： The method for securely processing digital information, has the following steps, performed by a secure element (100) having a secure processor (102): - loading (S10) the digital information (Si'') from an external memory (200) into the secure element (100); - segmenting (S13) the digital information (Si) into words of digital information (Wij,k), generating error-detection codes (EDCj,k) or error- correction codes (ECCi,k) from said words of digital information and associating said error-detection codes with the corresponding words; - transferring (S15) the words of digital information (Wij,k) and the associated error-detection codes (EDCj,k) or error-correction codes (ECCi,k) to the secure processor (102); - in the secure processor (102), verifying (S16) the words of digital information (Wij,k) based on the associated error-detection codes (EDCj,k) or error-correction codes (ECCi,k) before processing the digital information contained in said words (Wij,k).

6. 发明申请

WO2019129706A1 SECURE INSTALLATION OF APPLICATION KEYS 审中-公开
公开(公告)号：WO2019129706A1
公开(公告)日：2019-07-04
申请号：PCT/EP2018/086576
申请日：2018-12-21
申请人： NAGRAVISION S.A.
发明人： FISCHER, Jean-Bernard , FISCHER, Nicolas , GREMAUD, Fabien , VILLEGAS, Karine
IPC分类号： H04L9/08 , H04L9/14
CPC分类号： H04L9/14 , H04L9/0819 , H04L9/0822 , H04L9/0825 , H04L9/083
摘要： The present disclosure includes methods, devises and systems for preparing and installing one or more application keys owned by application owners in a remote device. The present disclosure further proposes methods, devices and systems for secure installation of subsequent application keys on a device utilising corresponding key derivation functions to associate an application with a respective policy and identifier using significantly low bandwidth for transfer of keys for execution of the respective application on the device.

7. 发明申请

WO2017198745A1 METHOD AND DEVICE TO PROTECT A CRYPTOGRAPHIC EXPONENT 审中-公开
标题翻译：保护密码指数的方法和设备
公开(公告)号：WO2017198745A1
公开(公告)日：2017-11-23
申请号：PCT/EP2017/061905
申请日：2017-05-18
申请人： NAGRAVISION S.A.
发明人： MACCHETTI, Marco , VILLEGAS, Karine
IPC分类号： H04L9/30 , H04L9/00
摘要： Since the publication of its principle, public-key cryptography has known important theoretical and practical developments. Notably, public-key cryptography has allowed putting into practice the concepts of digital signatures and of public-key key exchange; these methods are used on a daily basis in uncountable many digital systems. It is therefore proposed a method to generate a protected secret value k' used as a first operand in a cryptographic group operation involving a base group element G of order n and comprising: - generating random positive integers k1 and k2, that are strictly smaller than the order of the group element G thanks to a cryptographically secure random number generator, such that the generated random positive integers k1 and k2 do not share any divisor with the order n other than 1, - generating the protected secret value k' based on said generating random positive integers such as k' = k1 * k2, said protected secret value k' being used as a second operand in the group operation.
摘要翻译：自从其原理公布以来，公钥密码学已经知道了重要的理论和实践发展。值得注意的是，公钥密码学已经允许实施数字签名和公钥密钥交换的概念; 这些方法每天都在不可数数的许多数字系统中使用。因此提出了一种方法，用于在涉及n阶基本元素G的密码群操作中生成用作第一操作数的受保护秘密值k'，并且该方法包括： - 生成随机正整数k1和k2，其严格小于由于密码安全的随机数发生器，群组元素G的顺序使得所生成的随机正整数k1和k2不共享除1以外的n次级的任何除数， - 基于所述所述生成受保护的秘密值k' 产生随机正整数，例如k'= k1 * k2，所述受保护秘密值k'被用作组操作中的第二操作数。

8. 发明申请

WO2022008487A1 METHOD FOR REMOTELY PROGRAMMING A PROGRAMMABLE DEVICE 审中-公开
公开(公告)号：WO2022008487A1
公开(公告)日：2022-01-13
申请号：PCT/EP2021/068605
申请日：2021-07-06
申请人： NAGRAVISION S.A.
发明人： PERRINE, Jerome , VILLEGAS, Karine , HUNACEK, Didier , NICOULIN, André , ROULLEAU, Richard
IPC分类号： H04L29/06 , H04L9/08 , H04W12/04 , G06F21/76 , H04L9/32
摘要： A method for remotely programming a programmable device (35) designed to provide an expected sensitive result (45), the method comprising : - transmitting a first program code (41) to the programmable device (35), said first program code (41) being configured to get at least one distinctive data (35d) unique and physically inherent to the programmable device (35), - retrieving said distinctive data (35e) to generate a second program code (42) configured to provide the expected sensitive result (45) in case of the second program code (42) is executed on the programmable device (35) having produced the distinctive data (35d), and10 - transmitting said second program code (42) to the programmable device (35), so as to load the second program code (42) into the programmable device (35).

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