RSA algorithm private key element acquisition method and acquisition device
A technology of RSA algorithm and private key, which is applied in the field of security authentication and can solve problems such as the inability to meet the requirements of private key elements of the RSA algorithm of the security chip.
Active Publication Date: 2016-09-21
BEIJING HUADA INFOSEC TECH +1
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[0005] The embodiment of the present invention provides an RSA algorithm private key element acquisition method and an RSA algorithm private key element acquisition device to solve the problem that none of the existing methods can meet the requirements for obtaining the RSA algorithm private key element of a security chip
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[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0037] Secondly, the present invention is described in detail in conjunction with schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the sectional view showing the structure of the device will not be partially enlarged according to the general scale, and the schematic diagram is only an example, and it should not be limited here. The protection scope of the present invention. In addition, t...
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The embodiment of the present invention discloses a method and an acquisition device for obtaining a private key element of a security chip RSA algorithm. The obtaining method includes: setting a test code; testing whether the RSA algorithm private key element of the tested security chip can be obtained by setting different data for the test code; when the RSA algorithm private key element of the tested security chip is available; When the element can be obtained, preset data is set for the test code; according to the preset data in the test code, the values of all bits in the lower half are set, and the values of all bits in the lower half are set. After the value setting is completed, the data in the lower half is an RSA algorithm private key element of the tested security chip. The obtaining device includes: a setting unit, a testing unit, a preset unit, a first determining unit, a second determining unit, and a third determining unit. By using the method and device provided by the present invention, the private key element of the RSA algorithm of the security chip can be effectively obtained.
Description
technical field [0001] The invention relates to the field of safety authentication, in particular to a method for obtaining an RSA algorithm private key element of a security chip and a device for obtaining an RSA algorithm private key element. Background technique [0002] The RSA algorithm is an asymmetric cryptographic algorithm. The algorithm first selects two prime numbers as the two RSA algorithm private key elements, and then uses the two RSA algorithm private key elements to generate a key pair containing the public key and the private key, using the key When the public key in the key pair encrypts data, only the private key can be used to decrypt the encrypted data. Similarly, when the private key in the key pair is used to sign data, only the public key can be used to decrypt the signed data. The data is authenticated. [0003] With the development of technology, the RSA algorithm has been widely used, and various security chips capable of implementing the RSA alg...
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IPC IPC(8): H04L9/32H04L9/30
Inventor 王亚伟谢蒂王冠华李国俊
Owner BEIJING HUADA INFOSEC TECH