mirror of https://github.com/zcash/libsnark.git
Update license and README to account for merging of our pairing precomputation code in ate-pairing upstream.
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Madars Virza
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LICENSE
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@ -22,45 +22,3 @@ All files, with the exceptions below, are released under the MIT License:
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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********************************************************************************
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EXCEPTIONS:
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The following file includes code portions from the ate-pairing library
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<https://github.com/herumi/ate-pairing> by MITSUNARI Shigeo and TERUYA Tadanori:
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- src/algebra/curves/bn128/bn128_pairing.cpp
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They are therefore licensed under the same license as ate-pairing, namely
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"modified new BSD License <http://opensource.org/licenses/BSD-3-Clause>".
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That referenced web page specifies the following license:
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Copyright (c) <YEAR>, <OWNER>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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@ -116,9 +116,6 @@ options:
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run `sudo setsebool -P allow_execheap 1` to allow execution,
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or use `make CURVE=ALT_BN128` instead.
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* The \[ate-pairing] code is licensed under a "modified new BSD
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License", as opposed to libsnark's MIT license.
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* "alt_bn128":
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an alternative to "bn128", somewhat slower but avoids dynamic code generation.
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@ -2,58 +2,12 @@
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********************************************************************************
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Implements functions for computing Ate pairings over the bn128 curves, split into a
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offline and online stages.
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This code is based on the ate-pairing pairing code (https://github.com/herumi/ate-pairing),
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split into offline and online stages.
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********************************************************************************
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* @author This file is part of libsnark, developed by SCIPR Lab
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* and contributors (see AUTHORS).
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* Uses portions of ate-pairing <https://github.com/herumi/ate-pairing> by
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* MITSUNARI Shigeo and TERUYA Tadanori
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* @copyright modified new BSD License (http://opensource.org/licenses/BSD-3-Clause)
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* (see LICENSE file)
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* @copyright MIT license (see LICENSE file)
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*******************************************************************************/
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/*
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The "bn128" curve choice included in libsnark is based on the ate-pairing library by
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MITSUNARI Shigeo and TERUYA Tadanori [https://github.com/herumi/ate-pairing].
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The ate-pairing library is licensed under "modified new BSD License"
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[http://opensource.org/licenses/BSD-3-Clause].
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While the ate-pairing library does not include explicit license text, the license
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template at the link above is:
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Copyright (c) <YEAR>, <OWNER>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "algebra/curves/bn128/bn128_pairing.hpp"
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#include "common/profiling.hpp"
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#include "algebra/curves/bn128/bn128_init.hpp"
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@ -195,18 +149,6 @@ std::istream& operator>>(std::istream &in, bn128_ate_G2_precomp &prec_Q)
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return in;
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}
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void doubling_step_for_flipped_miller_loop(Fp2 *current, bn128_ate_ell_coeffs &l)
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{
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Fp6::pointDblLineEvalWithoutP(l, current);
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}
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void mixed_addition_step_for_flipped_miller_loop(const Fp2* Q,
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Fp2 *R,
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bn128_ate_ell_coeffs &l)
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{
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Fp6::pointAddLineEvalWithoutP(l, R, Q);
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}
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bn128_ate_G1_precomp bn128_ate_precompute_G1(const bn128_G1& P)
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{
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enter_block("Call to bn128_ate_precompute_G1");
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@ -223,7 +165,7 @@ bn128_ate_G2_precomp bn128_ate_precompute_G2(const bn128_G2& Q)
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enter_block("Call to bn128_ate_precompute_G2");
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bn128_ate_G2_precomp result;
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bn::experimental::precomputeG2(result.coeffs, result.Q, Q.coord);
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bn::experimental::precomputeG2(result.coeffs, result.Q, Q.coord);
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leave_block("Call to bn128_ate_precompute_G2");
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return result;
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@ -233,8 +175,8 @@ bn128_Fq12 bn128_ate_miller_loop(const bn128_ate_G1_precomp &prec_P,
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const bn128_ate_G2_precomp &prec_Q)
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{
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bn128_Fq12 f;
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bn::experimental::millerLoop(f.elem, prec_Q.coeffs, prec_P.P);
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return f;
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bn::experimental::millerLoop(f.elem, prec_Q.coeffs, prec_P.P);
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return f;
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}
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bn128_Fq12 bn128_double_ate_miller_loop(const bn128_ate_G1_precomp &prec_P1,
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@ -243,8 +185,8 @@ bn128_Fq12 bn128_double_ate_miller_loop(const bn128_ate_G1_precomp &prec_P1,
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const bn128_ate_G2_precomp &prec_Q2)
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{
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bn128_Fq12 f;
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bn::experimental::millerLoop2(f.elem, prec_Q1.coeffs, prec_P1.P, prec_Q2.coeffs, prec_P2.P);
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return f;
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bn::experimental::millerLoop2(f.elem, prec_Q1.coeffs, prec_P1.P, prec_Q2.coeffs, prec_P2.P);
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return f;
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}
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bn128_GT bn128_final_exponentiation(const bn128_Fq12 &elt)
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@ -2,58 +2,12 @@
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********************************************************************************
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Declares functions for computing Ate pairings over the bn128 curves, split into a
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offline and online stages.
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This code is based on the ate-pairing pairing code <https://github.com/herumi/ate-pairing>,
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split into offline and online stages.
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********************************************************************************
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* @author This file is part of libsnark, developed by SCIPR Lab
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* and contributors (see AUTHORS).
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* Uses portions of ate-pairing <https://github.com/herumi/ate-pairing> by
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* MITSUNARI Shigeo and TERUYA Tadanori
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* @copyright modified new BSD License (http://opensource.org/licenses/BSD-3-Clause)
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* (see LICENSE file)
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* @copyright MIT license (see LICENSE file)
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*******************************************************************************/
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/*
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The "bn128" curve choice included in libsnark is based on the ate-pairing library by
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MITSUNARI Shigeo and TERUYA Tadanori [https://github.com/herumi/ate-pairing].
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The ate-pairing library is licensed under "modified new BSD License"
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[http://opensource.org/licenses/BSD-3-Clause].
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While the ate-pairing library does not include explicit license text, the license
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template at the link above is:
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Copyright (c) <YEAR>, <OWNER>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef BN128_PAIRING_HPP_
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#define BN128_PAIRING_HPP_
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#include "algebra/curves/bn128/bn128_g1.hpp"
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