Patent ID: 9503255
Filing Date: 2016-11-22
CPC Classification: G06F,H04L

Claim Text:
1. A method for leak resistant ciphering comprising: providing a first stream of data and an associated first secret key; expanding the associated first secret key to form a first associated expanded secret key; providing a second simultaneous stream of data and an associated second secret key; expanding the associated second secret key to form a second associated expanded secret; intermixing the first stream of data and the second stream of data to form a combined stream of data; ciphering the combined stream of data in accordance with the first and second associated expanded secret keys by interleaving rounds to form a ciphered combined stream wherein ciphering of the combined stream of data is performed within a fixed window of time such that G de-multiplexing the ciphered combined stream of data to form de-multiplexed streams of data; providing the de-multiplexed streams of data at an output port; combining the processing of multiple simultaneous streams of data affords the opportunity to obfuscate the power signatures of each individual stream; and determining G