Abstract:
A semiconductor memory in which an area where an authentication key is stored and an access limitation is placed is resettable and an information distribution system including the same and having a high-degree security function are disclosed. Information about an area where an authentication key is stored and an access limitation is placed is stored in a part of a storage area of the semiconductor memory. Alternatively, an authentication key is stored for each unit of data to be authenticated and an access limitation on stored information is placed. By such a method, encrypted information is stored in an area where access limitation is placed, thereby realizing double information protection.
Abstract:
Data is written to selected cells (502) of a semiconductor device (200). After the data is written, the levels of trapped charges in the selected cells (502) is determined. Once the levels of charges are identified, a reference fingerprint (506) is created to identify the device. The fingerprint (506) is retrieved and compared to the authentication fingerprint. If it matches the stored reference fingerprint, the device is authenticated.
Abstract:
In a method for providing copy-protection services on a storage medium (for instance a solid state memory module), the data are arranged in sectors to which a field (S4T) is associated, where said field contains a random value Ri which is changed randomly when writing data to said sector. By encrypting the data stored on the medium using a key which depends critically on said random numbers, bit-by-bit copies (apart from said random numbers, which can not be deterministically changed by an application) to a second storage medium or recopies from some intermediate storage medium, can not be decrypted because the values of said random numbers will have changed, thus preventing unauthorized duplication and replay attacks.
Abstract:
The invention relates to a recording device, a recording method, a reproducing device and a reproducing method. A compressed digital signal is divided into blocks, and fixed-value data is inserted for every predetermined number of blocks to form an encrypted signal. On reception, the expansion of the encrypted signal is permitted depending on whether the inserted fixed-value data have been successfully decoded.
Abstract:
The memory device (200) includes a nonvolatile memory array (215) including a first block of memory cells (230). The first volatile protection bit coupled to the first block is programmable to prevent a memory access operation directed to the first block from being performed.
Abstract:
A flash memory card includes one or a plurality of flash memories (FM1-FMn) and a controller (10) having an interface connected to a host computer (14) to store card attribute information to be presented to the host computer at a predetermined storage position in the flash memory. 00000
Abstract:
A memory device includes a memory array comprising a plurality of planes and a plurality of independent plane driver circuits. The memory device further includes control logic to track a status of the plurality of independent plane driver circuits and detect an occurrence of a quiet event associated with a first independent plane driver circuit of the plurality of independent plane driver circuits. The control logic is further to determine whether a high noise event associated with a second independent plane driver circuit of the plurality of independent plane driver circuits is concurrently occurring. Responsive to determining that the high noise event associated with the second independent plane driver circuit is concurrently occurring, the control logic is to determine whether the first independent plane driver circuit has a higher priority than the second independent plane driver circuit. Responsive to determining that the first independent plane driver circuit has a higher priority than the second independent plane driver circuit, the control logic is to suspend the high noise event associated with the second independent plane driver circuit and permitting the quiet event associated with the first independent plane driver circuit to occur.
Abstract:
A memory controller may read a number of memory cells at a NAND flash array to generate a first raw string. The memory controller may determine that a difference between a number of bits from the first raw string having a value of logical zero and a number of bits from the first raw string having a value of logical one is greater than a threshold value and read the number of memory cells using a second read level to generate a second raw string. The memory controller may determine that a difference between a number of bits from the second raw string having a value of logical zero and a number of bits from the second raw string having a value of logical one is not greater than a threshold value and applying a cryptographic function using the second raw string to generate a first PUF value.
Abstract:
This disclosure provides a system and method for deploying and configuring a cyber-security protection solution using a portable storage device. The portable storage device may include a memory storing instructions to be executed by a computing device. When executed, the instructions may cause the computing device to implement a cyber-security protection solution that is configured to scan a second storage device and determine whether the second storage device is usable in a protected environment.
Abstract:
본 발명의 실시 예에 따른 플래시 메모리 장치는 셀 스트링을 선택하기 위한 선택 트랜지스터; 및 상기 선택 트랜지스터에 직렬로 연결되는 복수의 메모리 셀을 포함하되, 상기 복수의 메모리 셀 중 적어도 하나에 저장된 데이터를 보호하기 위해, 상기 선택 트랜지스터의 문턱 전압이 비선택 읽기 전압(Vread)보다 높아지도록 상기 선택 트랜지스터를 프로그램 할 수 있다. 본 발명의 실시 예에 따른 플래시 메모리는 선택 트랜지스터 또는 더미 메모리 셀의 문턱 전압을 조정함으로, 짧은 시간 내에 데이터를 영구적 또는 일시적으로 보호하고, 필요에 따라 데이터 손실없이 원래 데이터를 쉽게 복구할 수 있다.