Method and device for obtaining private key elements of RSA algorithm
A technology of an RSA algorithm and an acquisition method, which is applied in the field of security authentication and can solve problems such as the inability to meet the requirements of the private key element of the RSA algorithm of the security chip.
Active Publication Date: 2013-12-11
BEIJING HUADA INFOSEC TECH +1
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Problems solved by technology
[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 invention discloses a method and device for obtaining private key elements of an RSA algorithm of a security chip. The method for obtaining the private key elements of the RSA algorithm comprises the steps of setting test codes; testing whether the private key elements of the RSA algorithm of the tested security chip can be obtained or not by setting different data for the test codes; when the private key elements of the RSA algorithm of the tested security chip can be obtained, setting the preset data for the test codes; setting values of all bits of the half lower portion according to the preset data in the test codes, and after setting of the values of all the bits of the half lower portion is finished, using the data of the half lower portion as one private key element of the RSA algorithm of the tested security chip. The device for obtaining the private key elements of the RSA algorithm comprises a setting unit, a testing unit, a presetting unit, a first determining unit, a second determining unit and a third determining unit. By the adoption of the method and device, the private key elements 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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Login to View More IPC IPC(8): H04L9/32H04L9/30
Inventor 王亚伟谢蒂王冠华李国俊
Owner BEIJING HUADA INFOSEC TECH