snow performance

SNOW is a family of word-based synchronous stream ciphers developed by Thomas Johansson and Patrik Ekdahl at Lund University.
They have a 512-bit linear feedback shift register at their core, followed by a non-linear output state machine with a few additional words of state.
SNOW 1.0, SNOW 2.0, and SNOW 3G use a shift register of 16 32-bit words, and a 32-bit add-rotate-XOR (ARX) output transformation with 2 or 3 words of state. Each iteration advances the shift register by 32 bits and produces 32 bits of output.
SNOW-V and SNOW-Vi use a shift register of 32 16-bit words (designed to be implemented as 4 128-bit SIMD registers) which is advanced by 16 bits per iteration. 8 LFSR iterations can be performed simultaneously using SIMD operations, after which one output transformation step is performed, producing 128 bits of output. The output transformation uses the Advanced Encryption Standard (AES) round function (commonly implemented in hardware on recent processors), and maintains 2 additional 128-bit words of state.

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    Cold weather motorway M/KWH?

    Having had my MG4 Trophy for around 3 months now, i have been getting an average of 3.6 M/KWH from my 50 mile round commute, of mostly A/B road driving. I am planning on using it for a snowboard trip to Austria (St. Anton) in February. What sort of M/KWH should i expect at 70MPH at say 0...
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