supercop-ntruees1449-1087-rainbow181212 NTRUEES1499 speed Module Timing Keygen 2654 us Encrypt 64 us Decrypt 83 us Watch video SIMD AVX2 vector NTRUEES1087 speed Module Timing Keygen 1475 us Encrypt 46 us Decrypt 55 us Watch video SIMD AVX2 vector