778 fix lmkcdey parameter sets

[pascoec]

• modified default LMKCDEY param sets to lower expected probability of failure (2-20 --> 2-40)
• added LPF-qualified BINFHE_PARAMSETs for STD128 and STD128Q with very low probability of failure (e.g., 2**-120 for LPF_STD128)
• added approximate probability of failure to BINFHE_PARAMSET descriptions
• added binfhe-paramsets benchmark
• fixed small bug in rgsw-cryptoparameters.h
• changed data type for N in GenerateBinFHEContext() from int64_t to uint32_t
• cleaned up binfhecontext.cpp
• modified implementation for BinFHEContext::GenerateLUTviaFunction()

[pascoec]

Single-threaded results:

Running ./bin/benchmark/binfhe-paramsets Run on (8 X 4660.91 MHz CPU s) CPU Caches: L1 Data 32 KiB (x8) L1 Instruction 32 KiB (x8) L2 Unified 256 KiB (x8) L3 Unified 12288 KiB (x1) Load Average: 0.00, 0.61, 1.74

Benchmark Time CPU Iterations

FHEW_BINGATE2/TOY_2_GINX_OR 1.99 ms 1.99 ms 353 FHEW_BINGATE2/MEDIUM_2_GINX_OR 24.3 ms 24.3 ms 29 FHEW_BINGATE2/STD128_2_AP_OR 46.6 ms 46.6 ms 15 FHEW_BINGATE2/STD128_2_GINX_OR 28.9 ms 28.9 ms 24 FHEW_BINGATE3/STD128_3_GINX_OR 46.2 ms 46.2 ms 15 FHEW_BINGATE4/STD128_4_GINX_OR 46.1 ms 46.1 ms 15 FHEW_BINGATE2/STD128Q_2_GINX_OR 41.1 ms 41.1 ms 17 FHEW_BINGATE2/STD256Q_2_GINX_OR 190 ms 190 ms 4 FHEW_BINGATE3/STD256Q_3_GINX_OR 274 ms 274 ms 3 FHEW_BINGATE4/STD256Q_4_GINX_OR 320 ms 320 ms 2 FHEW_BINGATE2/STD128_2_LMKCDEY_OR 31.3 ms 31.3 ms 22 FHEW_BINGATE2/STD128Q_2_LMKCDEY_OR 33.7 ms 33.7 ms 21 FHEW_BINGATE2/STD256Q_2_LMKCDEY_OR 143 ms 143 ms 5 FHEW_BINGATE2/LPF_STD128_2_GINX_OR 42.9 ms 42.9 ms 16 FHEW_BINGATE2/LPF_STD128Q_2_GINX_OR 49.7 ms 49.7 ms 14 FHEW_BINGATE2/LPF_STD128_2_LMKCDEY_OR 67.3 ms 67.3 ms 11 FHEW_BINGATE2/LPF_STD128Q_2_LMKCDEY_OR 74.5 ms 74.5 ms 9