Abstract: A system for providing high availability to persistent data is provided that persists data on a node in discrete partitions that are each backed up on separate backup systems. When the system detects that the data saved on the node is compromised, the system could restore the data from multiple backup systems. Since the backup systems hold discrete sets of data that do not overlap one another, the backup systems are able to simultaneously and locklessly restore data to the compromised node.

Abstract: A cryptography device which reduces side channel information including a first computing block adapted to either encrypt or decrypt received first input data and to output the encrypted or decrypted first input data as first output data at a first data output, a second computing block adapted to either encrypt or decrypt received second input data and to output the encrypted or decrypted second input data as second output data at a second data output, and a control unit connected to the first and second computing blocks and adapted in a first operating condition on the one hand to partially or completely assign the first output data to the first computing block as the first input data and on the other hand to completely or partially assign the first output data to the second computing block as part of the second input data.

Abstract: A cryptography device which reduces side channel information including a first computing block adapted to either encrypt or decrypt received first input data and to output the encrypted or decrypted first input data as first output data at a first data output, a second computing block adapted to either encrypt or decrypt received second input data and to output the encrypted or decrypted second input data as second output data at a second data output, and a control unit connected to the first and second computing blocks and adapted in a first operating condition on the one hand to partially or completely assign the first output data to the first computing block as the first input data and on the other hand to completely or partially assign the first output data to the second computing block as part of the second input data.

Abstract: A cryptography device which reduces side channel information including a first computing block adapted to either encrypt or decrypt received first input data and to output the encrypted or decrypted first input data as first output data at a first data output, a second computing block adapted to either encrypt or decrypt received second input data and to output the encrypted or decrypted second input data as second output data at a second data output, and a control unit connected to the first and second computing blocks and adapted in a first operating condition on the one hand to partially or completely assign the first output data to the first computing block as the first input data and on the other hand to completely or partially assign the first output data to the second computing block as part of the second input data.

Abstract: A method of reducing a first data word corresponding to a polynomial C(x) and having a length of a maximum of 2n?1 to a second data word of a length of a maximum m which in a binary finite field GF(2m) whose elements are of a maximum length m corresponds to a polynomial C?0(x) equivalent to C(x), wherein m is smaller than or equal to n, includes partitioning of the first data word into a binary first sub-data word C0 and a binary second sub-data word C1, repeated right-shift of C1 to form summand terms until a respective summand term is associated with each non-disappearing term of a reduction trinomial or pentanomial which is not the term xm, adding the summand terms formed to the first sub-data word to form a sum data word and applying the partitioning step to the summand data word formed until the ascertained sum data word is of a length of a maximum m and forms the desired second data word.