Example embodiments of systems and methods for data transmission system between transmitting and receiving devices are provided. In an embodiment, each of the transmitting and receiving devices can contain a master key. The transmitting device can generate a diversified key using the master key, protect a counter value and encrypt data prior to transmitting to the receiving device, which can generate the diversified key based on the master key and can decrypt the data and validate the protected counter value using the diversified key.

Example embodiments of systems and methods for data transmission system between transmitting and receiving devices are provided. In an embodiment, each of the transmitting and receiving devices can contain a master key. The transmitting device can generate a diversified key using the master key, protect a counter value and encrypt data prior to transmitting to the receiving device, which can generate the diversified key based on the master key and can decrypt the data and validate the protected counter value using the diversified key.

A method for protecting data includes encrypting information to generate a first tweak, combining a data block with the first tweak, encrypting the tweaked data block to form encrypted data, combining the encrypted data with the first tweak, and providing the combined encrypted data for storage in a memory address. Storing the combined encrypted data at the memory address generates a first stimulus different from a second stimulus generated by storing same encrypted data combined with a second tweak at the memory address. The first stimulus is generated based on the first tweak and the second stimulus is generated based on the second tweak.

An electronic device includes a first non-volatile memory and an application circuit. The first non-volatile memory stores first encrypted data encrypted with a global key. The application circuit includes a second non-volatile memory, a decryption unit, a local key unit, and an encryption unit. The second non-volatile memory stores the global key. The decryption unit is coupled to the first non-volatile memory and the second non-volatile memory. The decryption unit retrieves the global key from the second non-volatile memory and decrypts the first encrypted data with the global key to generate plain data. The local key unit generates or stores a local key. The encryption unit is coupled to the local key unit. The encryption unit encrypts the plain data with the local key to generate second encrypted data and overwrites the first encrypted data in the first non-volatile memory with the second encrypted data.

The disclosure relates to an enhanced data security system and method thereof. In some embodiments, the method includes receiving the transactional credential dataset from a user application. The transactional credential dataset is provided by a user to the user application. The method further includes storing the transactional credential dataset in nodes of a graphical embedding storage model. The nodes further store historical credential datasets of the user. Further, the method includes determining a correlation among the historical credential datasets using an artificial neural network (ANN) model and detecting a pattern of the transactional credential dataset based on the correlation. The ANN model is trained based on credential datasets provided by users stored in the nodes of the graphical embedding storage model.

An encryption method comprises: creating an asymmetric profile key comprising a multipart threshold key using a set of user devices; signing a declaration using the profile key and the set of user devices, the declaration identifying the set of user devices; creating an asymmetric location key comprising two multipart threshold keys; sharding and storing the asymmetric location key; creating a symmetric key; encrypting a file with the symmetric key; encrypting the symmetric key with the location key; and storing the encrypted file and encrypted key such that the encrypted file cannot be decrypted without decrypting the location key by a threshold of the set of user devices.

A user device may determine to back up a hardware key that is associated with a hardware component of the user device. The user device may determine that the user device has an operation key. The user device may retrieve the hardware key from a first data structure that is included in the user device and may encrypt, based on the operation key, the hardware key. The user device may process, after encrypting the hardware key, the hardware key to generate a hash value and may determine that the hash value is not included in a registry of the user device. The user device may transmit, based on determining that the hash value is not included in the registry, the encrypted hardware key to a server device to cause the hardware key to be backed up in a second data structure associated with the server device.

A block cipher method and apparatus using round repetition for providing, from a plaintext message (10), a cipher-text message (50) and a global tag (52) is disclosed. The plaintext message is converted into a plurality of ordered plaintext blocks (11) which are successively processed during a round for computing:—a cryptogram (30) by encrypting input data (20) using a single cryptographic key, said cryptogram comprising a first segment (31) and a second segment (32)—a ciphertext block (51) by performing a first operation (41) using, as operands: said first segment (31) said current plaintext block (11) and said second segment (32). At each next round said input data is newly determined based on the current ciphertext block and an updated reproducible data. The ciphertext message is determined by concatenating the ciphertext blocks and the global tag by a second operation (42) using computed authentication local tags as operands.

A data processing system includes technology to enable implicit integrity to be used for digital communications. That technology comprises a hardware processor and an implicit integrity engine (IIE) responsive to the processor. For instance, in response to the data processing system receiving a communication that contains a message, the IIE is to automatically analyze the communication to determine whether the message was sent with implicit integrity. If the message was sent with implicit integrity, the IIE is to automatically use a pattern matching algorithm to analyze entropy characteristics of a plaintext version of the message, and to automatically determine whether the message has low entropy, based on results of the pattern matching algorithm and a predetermined entropy threshold. If the message does not have low entropy, the IIE is to automatically determine that the message has been corrupted. Other embodiments are described and claimed.

A transmitter for transmitting a secure access signal to a system for providing secure access to a controlled item is disclosed. The access is dependent on information contained in the secure access signal. The transmitter comprises a biometric sensor for receiving a biometric signal and a processor for matching the biometric signal against members of a database of biometric signatures. The transmitter comprises enabling means for enabling an inductive circuit, based on the matching of the biometric signal, to transmit the secure access signal conveying the information to the system upon the inductive circuit being placed within range of a radio frequency field emitted by the system.