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zeekay
674da0bb9e
The headers said 'BSD3 License with Lux Industries Exceptions', which is not a licence that exists — the sweep that removed the upstream vendor's name substituted ours into the licence title instead of correcting it. LICENSE.txt is the BSD 3-Clause Clear License and the headers now say so.
41 lines
1.0 KiB
C++
41 lines
1.0 KiB
C++
// Part of the Torus Compiler Project, under the BSD 3-Clause Clear
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// License. See
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// https://github.com/luxfhe/torus/blob/main/LICENSE.txt
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// for license information.
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#include "toruslang/Common/Security.h"
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#include <algorithm>
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#include <cmath>
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#include <cstddef>
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#include <vector>
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namespace toruslang {
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namespace security {
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double SecurityCurve::getVariance(int glweDimension, int polynomialSize,
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int logQ) {
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auto size = glweDimension * polynomialSize;
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if (size < minimalLweDimension) {
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return NAN;
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}
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auto a = std::pow(2, (slope * size + bias) * 2);
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auto b = std::pow(2, -2 * (logQ - 2));
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if (bits == 132) {
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return a + b;
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}
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return a > b ? a : b;
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}
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#include "torus/curves.gen.h"
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SecurityCurve *getSecurityCurve(int bitsOfSecurity, KeyFormat keyFormat) {
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for (size_t i = 0; i < curvesLen; i++) {
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if (curves[i].bits == bitsOfSecurity && curves[i].keyFormat == keyFormat)
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return &curves[i];
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}
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return nullptr;
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}
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} // namespace security
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} // namespace toruslang
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