Abstract: Contents of a memory may be authenticated using redundant encryption. In some examples, data to be stored by a memory is encrypted with two unique encryption keys—a first encryption key is used generate a cipher text and a second encryption key (different than the first encryption key) is used to generate an authentication tag. The cipher text and authentication tag are stored by the memory. At a later time, the cipher text and authentication tag may be retrieved from the memory and decrypted using the respective encryption keys. After decrypting the cipher text and the authentication tag, the data retrieved from the memory may be authenticated by comparing the plaintext generated by decrypting the cipher text and with the plaintext generated by decrypting the authentication tag. A match between the plaintext indicates the data was not corrupted or modified during storage in the memory.

Abstract: Contents of a memory are encrypted using an encryption key that is generated based on a random number and a memory location at which the contents are stored. Each of a plurality of locations of a memory can be associated with a respective unique pointer value, and an encryption key may be generated based on the unique pointer value and the random number. In some examples, the random number is unique to a power-up cycle of a system comprising the memory or is generated based on a time at which the data to be stored by the memory at the selected memory location is written to the memory.

Abstract: Contents of a memory may be authenticated using redundant encryption. In some examples, data to be stored by a memory is encrypted with two unique encryption keys—a first encryption key is used generate a cipher text and a second encryption key (different than the first encryption key) is used to generate an authentication tag. The cipher text and authentication tag are stored by the memory. At a later time, the cipher text and authentication tag may be retrieved from the memory and decrypted using the respective encryption keys. After decrypting the cipher text and the authentication tag, the data retrieved from the memory may be authenticated by comparing the plaintext generated by decrypting the cipher text and with the plaintext generated by decrypting the authentication tag. A match between the plaintext indicates the data was not corrupted or modified during storage in the memory.

Abstract: Contents of a memory are encrypted using an encryption key that is generated based on a random number and a memory location at which the contents are stored. Each of a plurality of locations of a memory can be associated with a respective unique pointer value, and an encryption key may be generated based on the unique pointer value and the random number. In some examples, the random number is unique to a power-up cycle of a system comprising the memory or is generated based on a time at which the data to be stored by the memory at the selected memory location is written to the memory.

Abstract: An apparatus and method of operating a cascadable, instant-fall-through First In, First Out (FIFO) buffer is provided. The method comprises receiving a first data element at an input of a FIFO buffer which includes a plurality of buffer slices including an output buffer slice wherein each of the plurality of buffer slices comprise a data register and a control bit register. A buffer slice is identified which is indicated for storing a data element based on a control bit register for the buffer slice and a control bit register of an adjacent buffer slice on an output side. When data is read from an output buffer slice the FIFO buffer, all data in other buffer slices are shifted down one slice closer to the output side of the FIFO buffer.

Abstract: An apparatus and method of operating a cascadable, instant-fall-through First In, First Out (FIFO) buffer is provided. The method comprises receiving a first data element at an input of a FIFO buffer which includes a plurality of buffer slices including an output buffer slice wherein each of the plurality of buffer slices comprise a data register and a control bit register. A buffer slice is identified which is indicated for storing a data element based on a control bit register for the buffer slice and a control bit register of an adjacent buffer slice on an output side. When data is read from an output buffer slice the FIFO buffer, all data in other buffer slices are shifted down one slice closer to the output side of the FIFO buffer.