Intel Corporation

University System of Maryland

International Business Machines Corporation

Avinash Laxmisha Varna

Santosh Ghosh

Manoj R Sastry

Min Wu

Reuven Elbaum

David Novick

Gyora M Benedek

Joseph Friel

Guan-Ming Su

Sanu K Mathew

Hongxia Jin

Jeffrey Bruce Lotspiech

Sudhir K Satpathy

Raghavan Kumar

Vikram B Suresh

Ashwin Deepak Swaminathan

Yinian Mao

Carlos Alfonso Tokunaga

Andrew H Reinders

Shan He

Hongmei Gou

Adi Hajj-Ahmad

Ravi Garg

Andrea Basso

Debayan Das

Douglas W Oard

Dumitru-Daniel Dinu

An apparatus is described including cryptography circuitry to generate authentication tags to provide integrity protection for plaintext and ciphertext.

Plaintext integrity protection mechanism

An apparatus comprises an input register comprising an input polynomial, a processing datapath communicatively coupled to the input register comprising a plurality of compute nodes to perform a number theoretic transform (NTT) algorithm on the input polynomial to generate an output polynomial in NTT format. The plurality of compute nodes comprises at least a first butterfly circuit to perform a series of butterfly calculations on input data and a randomizing circuitry to randomize an order of the series of butterfly calculations.

Low overhead side channel protection for number theoretic transform

A confidentiality preserving system and method for performing a rank-ordered search and retrieval of contents of a data collection. The system includes at least one computer system including a search and retrieval algorithm using term frequency and/or similar features for rank-ordering selective contents of the data collection, and enabling secure retrieval of the selective contents based on the rank-order. The search and retrieval algorithm includes a baseline algorithm, a partially server oriented algorithm, and/or a fully server oriented algorithm. The partially and/or fully server oriented algorithms use homomorphic and/or order preserving encryption for enabling search capability from a user other than an owner of the contents of the data collection. The confidentiality preserving method includes using term frequency for rank-ordering selective contents of the data collection, and retrieving the selective contents based on the rank-order.

System and method for confidentiality-preserving rank-ordered search

Embodiments are directed to countermeasures for side-channel attacks on protected sign and key exchange operations. An embodiment of storage mediums includes instructions for commencing a process including an elliptic curve scalar multiplication (ESM) operation including application of a secret scalar value; splitting the secret scalar value into two random scalar values; counting a number of leading '0' bits in the scalar value and skipping the number of leading '0' bits in processing; performing an ESM iteration for each bit of the secret scalar value beginning with a most significant &#x2018;1&#x2019; bit of the scalar value including a Point Addition operation and a Point Double operation for each bit on randomized points; performing ESM operation dummy iterations equal to the number of leading &#x2018;0&#x2019; bits; and returning an output result for the ESM operation.

Countermeasures for side-channel attacks on protected sign and key exchange operations

Embodiments are directed to countermeasures against hardware side-channel attacks on cryptographic operations. An embodiment of an apparatus includes multiple crypto cores; and a current source including multiple current source blocks, the current source blocks including a respective current source block associated with each of the crypto cores, and wherein the current sources blocks are switchable to switch on a current source block associated with each active core of the multiple crypto cores and to switch off a current source associated with each inactive core of the multiple cryptographic cores.

Countermeasures against hardware side-channel attacks on cryptographic operations

Described is an apparatus comprising an S-box circuitry operable to convert a value on an input into a value on an output in accordance with an Advanced Encryption Standard (AES) Rijndael S-box matrix. The apparatus also comprises a pseudo-random number generation (PRG) circuitry operable to provide a sequence of pseudo-random numbers on a first output and a registered copy of the sequence on a second output. The apparatus further comprises a mask circuitry operable to provide an XOR of a value on the output of the S box circuitry and a value on the first output of the PRG circuitry. The apparatus additionally comprises a mask removal circuitry operable to provide an XOR of a value on an output of the data register circuitry, a value coupled to an output of a key register circuitry, and a value on the second output of the PRG circuitry.

Linear masking circuits for side-channel immunization of advanced encryption standard hardware

Various systems and methods may benefit from determination of environmental signatures in recordings. For example, such signatures may aid forensic analysis and alignment of media recordings, such as alignment of audio or video recordings. A method can include reading data representative of sensed light in a visual track of a video recording. The method can also include extracting an electric network frequency signal from the data representative of sensed light.

Environmental signatures for forensic analysis and alignment of media recordings

One embodiment of the present invention includes a method for traitor tracing that includes performing an inner code traitor tracing on a recovered pirated digital file, the recovered digital file incorporating an inner code for assigning segments of the digital file and an outer code for assigning inner codes to individual digital files. The method also includes extracting partial information regarding the outer code from the inner code tracing. An outer code tracing procedure may then be performed using the partial information.

Traitor detection for multilevel assignment

Growing community of inventors

Chandler, AZ, United States of America

Avinash Laxmisha Varna