Abstract: This specification provides a key management method and a related device, which are applied to security hardware. The method includes: preventing, in response to a start instruction for the electronic device, the CPU from being started, and encrypting a second key corresponding to the security hardware by using the stored first key; sending an encrypted second key to the storage medium, so that the storage medium decrypts the encrypted second key by using the first key, and stores a decrypted second key, where the second key is stored in volatile storage space of the storage medium, and the second key is used to encrypt data when the data is written into the storage medium, and decrypt data when the data is read; and controlling, in response to that the storage medium successfully stores the second key, the CPU to be started.

Abstract: Embodiments of this specification disclose computing devices and methods for constructing a trusted chain of a computing device, and relate to the field of information security technologies. The method includes following: A trusted module located on the computing device is started; the trusted module measures a CRTM of a processor on the computing device, and stores a measurement result in the trusted module; and when the CRTM is executed by the processor, a next level of code of the CRTM is measured, and a measurement result is stored in the trusted module; and when the next level of code of the CRTM is executed by the processor, a next level of code is measured, and a measurement result is stored in the trusted module, where by analogy, next levels of code is measured layer by layer to complete trusted chain establishment for the computing device.

Abstract: The present disclosure discloses an aluminum alloy, based on a total mass of the aluminum alloy, including: 9-12% Si; 3.0-5.0% Zn; 1.5-2.6% Cu; 0.4-0.9% Mn; 0.2-0.6% Mg; 0.1-0.25% Fe; 0.03-0.35% Zr; 0.05-0.2% Ti; 0.005-0.04% Sr; 0.01-0.02% Ga; 0.005-0.01% Mo; 0.001-0.02% Cr; 0.005-0.3% Ni; 78.01-85.624% Al; and an impurity element.

Abstract: An aluminum alloy and application thereof are disclosed. Based on a total mass of the aluminum alloy, the aluminum alloy includes: 7%-11% Si, 0.4%-1.0% Fe, 0.001%-0.2% Mg, 0.001%-0.2% Cu, 0.001%-0.2% Zn, 0.005%-0.1% Mn, 0.01%-0.06% Sr, 0.003%-0.05% B, 0.01%-0.02% Ga, 0.001%-0.01% Mo, 0.001%-0.2% Ce, 0.0003%-0.02% La, and balanced by aluminum and impurity elements, where a total amount of the impurity elements is less than 0.1%.

Abstract: An aluminum alloy and applications thereof are disclosed. Based on the total weight of the aluminum alloy, the aluminum alloy includes: 8-11% of Si, 2-4% of Cu, 0.6-4% of Zn, 0.65-1.1% of Mn, 0.35-0.65% of Mg, 0.001-0.05% of Cr, 0.01-0.03% of Sr, 0.08-0.12% of Ti, 0.008-0.02% of B, 0.1-0.3% of Fe, 0.01-0.02% of Ga, 0.008-0.015% of Sn, and the balance of Al and less than 0.1% of other elements.

Abstract: This specification discloses methods, apparatuses, systems, and media for security verification. In an example, an input/output apparatus is disposed on a front panel of an electronic device. In response to a user performs an operation on the input/output apparatus, the input/output apparatus determines an electrical signal corresponding to the operation, and sends the electrical signal to a verification apparatus. The verification apparatus verifies, based on a pre-stored verification password, a Morse code that is input by the user and that is determined based on the electrical signal, and sends a release instruction to a locking mechanism of the electronic device in response to that the verification succeeds such that the locking mechanism releases physical locking of the electronic device.

Abstract: This specification discloses methods, apparatuses, and storage media for security verification. In an implementation, a verification unit in an electronic device sends a verification instruction for a device to be verified to a channel management unit in the electronic device, configuration information of the device is obtained based on verification instruction by using the channel management unit, and the configuration information is sent to the verification unit. The verification unit verifies the received configuration information based on stored verification information. After verification succeeds, the electronic device starts. The configuration information of the device is sent by using the channel management unit to the verification unit for verification, so as to implement security verification in a start process of the electronic device, thereby ensuring information security.

Abstract: This specification provides a key management method and a related device, which are applied to security hardware. The method includes: preventing, in response to a start instruction for the electronic device, the CPU from being started, and encrypting a second key corresponding to the security hardware by using the stored first key; sending an encrypted second key to the storage medium, so that the storage medium decrypts the encrypted second key by using the first key, and stores a decrypted second key, where the second key is stored in volatile storage space of the storage medium, and the second key is used to encrypt data when the data is written into the storage medium, and decrypt data when the data is read; and controlling, in response to that the storage medium successfully stores the second key, the CPU to be started.

Abstract: A walking power control system for wolfberry picking, including a frame, a turntable, rotating rods, first gears, second gear, gear racks, supporting rods, hydraulic motors, a front traveling wheel, a left traveling wheel and a right traveling wheel. Hydraulic motors rotate to drives three traveling wheels to rotate, thereby driving the frame to move, when it is necessary to turn, a turntable is rotated, the turntable rotates to drive two first gears to rotate, and the two first gears rotate to drive the supporting rods to rotate, thereby driving the left traveling wheel and the right traveling wheel to rotate, so that the traveling direction of the frame is changed.

Abstract: Embodiments of this specification disclose computing devices and methods for constructing a trusted chain of a computing device, and relate to the field of information security technologies. The method includes following: A trusted module located on the computing device is started; the trusted module measures a CRTM of a processor on the computing device, and stores a measurement result in the trusted module; and when the CRTM is executed by the processor, a next level of code of the CRTM is measured, and a measurement result is stored in the trusted module; and when the next level of code of the CRTM is executed by the processor, a next level of code is measured, and a measurement result is stored in the trusted module, where by analogy, next levels of code is measured layer by layer to complete trusted chain establishment for the computing device.

Abstract: This specification discloses methods, apparatuses, systems, and media for security verification. In an example, an input/output apparatus is disposed on a front panel of an electronic device. In response to a user performs an operation on the input/output apparatus, the input/output apparatus determines an electrical signal corresponding to the operation, and sends the electrical signal to a verification apparatus. The verification apparatus verifies, based on a pre-stored verification password, a Morse code that is input by the user and that is determined based on the electrical signal, and sends a release instruction to a locking mechanism of the electronic device in response to that the verification succeeds such that the locking mechanism releases physical locking of the electronic device.

Abstract: An electrode-modified heavy metal ion microfluidic detection chip, comprising a microfluidic module (1) and a three-electrode sensor (2), wherein the microfluidic module (1) is integrally molded by 3D printing, and the interior thereof has a microchannel (10) and a sensor slot (11); and the three-electrode sensor (2) comprises three electrodes (21, 22, 23) printed on a card-shaped bottom plate (20), among which the working electrode (21) is a porous nano-NiMn2O4 modified bare carbon electrode, and the three-electrode sensor (2) is inserted into the sensor slot (11) that matches same to form the microfluidic detection chip.

Abstract: Described is a decoder suitable for use with any communication or storage system. The described decoder has a modular decoder hardware architecture capable of implementing a noise guessing process and due to its dependency only on noise, the decoder design is independent of any encoder, thus making it a universal decoder. Hence, the decoder architecture described herein is agnostic to any coding scheme.

Abstract: The present disclosure discloses an aluminum alloy, based on a total mass of the aluminum alloy, including: 9-12% Si; 3.0-5.0% Zn; 1.5-2.6% Cu; 0.4-0.9% Mn; 0.2-0.6% Mg; 0.1-0.25% Fe; 0.03-0.35% Zr; 0.05-0.2% Ti; 0.005-0.04% Sr; 0.01-0.02% Ga; 0.005-0.01% Mo; 0.001-0.02% Cr; 0.005-0.3% Ni; 78.01-85.624% Al; and an impurity element.

Abstract: An aluminum alloy and application thereof are disclosed. Based on a total mass of the aluminum alloy, the aluminum alloy includes: 7%-11% Si, 0.4%-1.0% Fe, 0.001%-0.2% Mg, 0.001%-0.2% Cu, 0.001%-0.2% Zn, 0.005%-0.1% Mn, 0.01%-0.06% Sr, 0.003%-0.05% B, 0.01%-0.02% Ga, 0.001%-0.01% Mo, 0.001%-0.2% Ce, 0.0003%-0.02% La, and balanced by aluminum and impurity elements, where a total amount of the impurity elements is less than 0.1%.

Abstract: The present disclosure relates to a copper based microcrystalline alloy and a preparation method thereof, and an electronic product. In percentage by weight and based on the total amount of the copper based microcrystalline alloy, the copper based microcrystalline alloy includes: 30-60 wt % of Cu; 25-40 wt % of Mn; 4-6 wt % of Al; 10-17 wt % of Ni; 0.01-10 wt % of Si; and 0.001-0.03% of Be.

Abstract: Provided is a dissolution-enhanced olaparib composition, a preparation method therefor, a use thereof, and a medicament including the dissolution-enhanced olaparib composition. The dissolution-enhanced olaparib composition includes: olaparib; copovidone and a dissolution enhancer, wherein based on 100 parts by weight of olaparib, 100 or more and less than 200 parts by weight of copovidone, and 20 to 150 parts by weight of a dissolution enhancer. The dissolution-enhanced olaparib composition and the medicament prepared therefrom have controllable stability, increased oral absorption of the active ingredient, reduced excipient dosage, improved medication convenience, and are easy for industrial production.

Abstract: An aluminum alloy and a preparation method thereof are provided. In percentage by mass, the aluminum alloy includes: 8-11% of Si, 2-3% of Cu, 0.7-1.1% of Mg, 0.7-1.5% of Mn, 0.01-0.015% of Sr, 0.01-0.015% of Cr, 0-0.4% of Fe, 0.02-0.1% of Ti, 0.01-0.02% of Ga, 0.004-0.02% of B, 0-2% of Zn, and the balance of Al and less than 0.1% of other elements.

Abstract: An aluminum alloy and applications thereof are disclosed. Based on the total weight of the aluminum alloy, the aluminum alloy includes: 8-11% of Si, 2-4% of Cu, 0.6-4% of Zn, 0.65-1.1% of Mn, 0.35-0.65% of Mg, 0.001-0.05% of Cr, 0.01-0.03% of Sr, 0.08-0.12% of Ti, 0.008-0.02% of B, 0.1-0.3% of Fe, 0.01-0.02% of Ga, 0.008-0.015% of Sn, and the balance of Al and less than 0.1% of other elements.