摘要:
A method and system for encrypting input data may include receiving an input point and a randomness rate and generating a random selection value and a random position value from the randomness rate. At least one of the input point and points encrypted by performing elliptic curve (EC) operation over a plurality of rounds may be randomly selected based on the randomness rate and the random position value. The selected point may be converted to a point representation directed by the random selection value. A finally encrypted output point may be generated by performing the EC operation over a plurality of rounds based on the input point and a secret key.
摘要:
A method and system for encrypting input data may include receiving an input point and a randomness rate and generating a random selection value and a random position value from the randomness rate. At least one of the input point and points encrypted by performing elliptic curve (EC) operation over a plurality of rounds may be randomly selected based on the randomness rate and the random position value. The selected point may be converted to a point representation directed by the random selection value. A finally encrypted output point may be generated by performing the EC operation over a plurality of rounds based on the input point and a secret key.
摘要:
A circuit for converting Boolean and arithmetic masks includes “m” converting units, wherein m is an integer greater than 1. Each of the m converting unit includes; a first converting unit configured to receive first bits of input data, output one of the first bits as a first output bit, perform an XOR operation with respect to at least part of the first bits, and output an XOR operation result as a first intermediate result bit to a next converting unit in a sequence of converting unit ranging between 2 and n−1th; and an nth converting unit, wherein n is an integer greater than or equal to 2 and less than or equal to m, configured to receive n−1th bits and nth bits of the input data, and at least one of an n−1th intermediate result bit and n−1th output bit from an n−1th converting unit, perform an AND operation and the XOR operation with respect to a first group of the received bits, output an operation result for the first group as an nth output bit, perform the AND operation and the XOR operation with respect to a second group of the received bits, and output an operation result of the second group as an nth intermediate result bit.
摘要:
An Advanced Encryption System (AES) compliant circuit can include a multiplier circuit configured to multiply masked data with masking data to provide multiplied outputs therefrom and a combinatorial circuit coupled to the multiplier circuit and configured to combine the multiplied outputs with at least one of the masked data or at least one of the masking data.