摘要:
An integrated circuit has one or more logic gates and a control circuit. The control circuit has one or more control elements coupled to the logic gates. The control circuit controls the states of the one or more logic gates. The one or more control elements have one or more programmable resistance elements and/or one or more threshold switching elements.
摘要:
A semiconductor chip having a subcircuit formed in a substrate; and a phase-change memory cell located on the subcircuit, and configured to directly detect an attack on the subcircuit, or to form a shield to prevent physical access to the subcircuit.
摘要:
One or more embodiments relate to an electronic device comprising a circuitry and a programmable resistive element. The programmable resistive element comprises a first and a second state, wherein the programmable resistive element is configured to allow switching from the second state into the first state in response to a signal comprising at least a predefined level. The circuitry is configured to provide signals up the predefined level, wherein the circuitry is configured to provide a switch signal to the programmable resistive element, wherein the switch signal causes switching from the first into the second state.
摘要:
A data storage device includes a plurality of data storage units, a physical random number generator with a noise source based on a physical noise process, for generating a random number, and a replacer for selecting a data storage unit wherein data is to be stored, depending on the random number. Selecting, on the basis of genuine random numbers, data storage units and/or lines to be replaced in the cache.
摘要:
A communication apparatus for communication according to a master-slave communication protocol is formed as a slave instance communicating with a master instance via a bus. The master instance is operative to switch the bus into a bus suspend state if no bus activity is present during a predetermined interval. In response to a bus suspend state, the slave instance makes a transition to a slave suspend state. The communication apparatus includes a monitor configured to monitor the bus activity and a transmitter configured to transmit a signal via the bus if the monitor does not recognize any bus activity during part of the predetermined interval and a transition of the slave instance to the slave suspend state is undesirable, wherein the signal is operative to prevent the master instance from switching the bus into the bus suspend state.
摘要:
A method for determining a physical address from a virtual address, wherein a mapping regulation between the virtual address and the physical address is implemented as hierarchical tree structure with compressed nodes. First, a compression indicator included in the mapping regulation is read, and a portion of the virtual address associated with the considered node level is read. Using the compression indicator and the portion of the virtual address, an entry in the node list of the considered node is determined. The determined entry is read, whereupon the physical address can be determined directly, if the considered node level has been the hierarchically lowest node level. If higher node levels to be processed are present, the previous steps in determining the physical address for compressed nodes of lower hierarchy level are repeated until the hierarchically lowest node level is reached.
摘要:
An apparatus for calculating a representation of a result operand of the non-linear logical operation between a first operand and a second operand includes a first logic gate and a second logic gate. Each operand is represented by two auxiliary operands, which, when linearly combined together result in the respective operand. The first and second logic gates are designed such that an average energy consumption of the first or second logic gate is substantially equal to a plurality of combinations of auxiliary operands at the beginning of a first operation cycle and auxiliary operands at the beginning of a second operating cycle, the average energy being derivable from a plurality of different orders of occurrences of the first to fourth auxiliary operands.
摘要:
A method for operating a microprocessor in which there is at least one program branch and/or program delay which is implemented under random-bit control and as a hardware-based command in order to modulate a program flow and which ensures that every pass through a particular program brings about a respective program execution time which is different than that in preceding program passes.
摘要:
A shift device for shifting a first place of a data word, which consists of a plurality of places, to a second place so as to obtain a shifted data word, wherein the first place is encrypted using a first encryption parameter and wherein the second place is encrypted using a second encryption parameter, includes a unit for shifting the first place of the data word to the second place of the data word, a unit for re-encrypting the first place from an encryption using the first encryption parameter into an encryption using the second encryption pa- rameter, and a control for controlling the unit for shifting and the unit for re-encryption so that the first place is first shifted to the second place and is then re-encrypted, or that the first place is first re-encrypted and is then shifted to the second place. This ensures that data encrypted either with the first encryption parameter or with the second encryption parameter are always shifted, thus making it harder for attackers to eavesdrop on clear text data.
摘要:
A device according to the present invention is configured for transmitting data between two semiconductor chips of a data processor in an encrypted manner, wherein a first semiconductor chip is connected to a second semiconductor chip. The device includes a non-volatile memory element in each of the two semiconductor chips, wherein an encryption initial value for an encryption rule is stored in the memory element of the first semiconductor chip and a decryption initial value associated to the encryption initial value for a decryption rule associated to the encryption rule is stored in the memory element of the second semiconductor chip. Additionally, the first semiconductor chip has a first data transmission interface formed to generate an encryption data stream from an input data stream using the encryption initial value according to the encryption rule. Also, the second semiconductor chip has a second data transmission interface formed to receive the encryption data stream and to generate a decryption data stream from the encryption data stream using the decryption initial value according to the decryption rule and to compare the decryption data stream generated to an expected data stream, wherein the second data transmission interface is also formed to perform a defensive measure against transmitting data from the second data transmission interface to the first data transmission interface when the decryption data stream does not correspond to the expected data stream.