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Cryptographic system management

A cryptographic system and secret technology, which is applied in the field of cryptographic system management, can solve the problem of losing the benefits of changes, etc.

Active Publication Date: 2019-08-06
MASTERCARD INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Changing the key is advisable because if it stays the same then the benefit of the change may be lost

Method used

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  • Cryptographic system management
  • Cryptographic system management
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Embodiment Construction

[0023] Specific embodiments of the present invention will be described below with reference to the accompanying drawings. The white-box approach is applicable to any form of computing device, but it has particular utility for mobile computing devices such as smartphones and is relevant to applications such as mobile banking. Given this correlation, figure 1 shows the applicable figure 2 Relevant elements of a mobile computing device in the form of a smartphone are shown for the mobile banking environment. figure 1 of smartphones suitable for implementing the reference Figure 3 to Figure 5 Embodiments of the invention are described.

[0024] figure 1 Relevant portions of a representative hardware and software architecture of a mobile computing device suitable for implementing embodiments of the invention are shown schematically. In the example shown, each mobile computing device is a mobile cellular telecommunications handset ("mobile phone" or "mobile device"). In othe...

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Abstract

A method is described for transferring secrets from a first cryptographic system installed on a computing device to a second cryptographic system installed on the computing device to enable the secondcryptographic system to replace the first cryptographic system. The first cryptographic system has an identity, and a trusted party is trusted by the first cryptographic system and has a trusted party private key and a trusted party public key. The second cryptographic system provides a signature under the trusted party private key of the first cryptographic system identity and a second cryptographic system public key, the second cryptographic system having a second cryptographic system private key. The first cryptographic system confirms that the signature comprises the identity and uses a first cryptographic system private key and a first cryptographic system public key to establish a shared secret with the second cryptographic system. The first cryptographic system and the second cryptographic system use the shared secret to transfer secrets.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit and priority of European Patent Application No. 16206449.7, filed 22 December 2016. The entire disclosure of the above application is hereby incorporated by reference. technical field [0003] The present invention relates to the management of cryptographic systems. Embodiments are particularly relevant to cryptographic systems used by applications on devices such as mobile phones. In the specific case in question, the cryptographic system uses white-box cryptography. Background technique [0004] Many applications require the use of secrets and cryptography to establish secure paths between system elements and to allow a system element to trust information verified by a trusted party. Passwords are increasingly used in applications on mobile devices such as phones, tablets and laptops. In traditional arrangements, cryptographic functions and secrets are kept in physically and lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32
CPCG06F21/14H04L9/0891H04L63/0823H04L2209/16H04L9/0841H04L9/321H04L9/002G06Q20/3227H04L9/3013H04L9/3066H04L2209/56
Inventor A·姆生D·A·罗伯茨S·汤姆森
Owner MASTERCARD INT INC