70 lines
2.1 KiB
Protocol Buffer
70 lines
2.1 KiB
Protocol Buffer
/*
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* Copyright 2017 Google Inc.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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syntax = "proto2";
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option optimize_for = LITE_RUNTIME;
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package rlwe;
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option go_package = "github.com/google/shell-encryption";
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// NTT Polynomial
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message SerializedNttPolynomial {
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// Coefficients of the polynomial
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optional bytes coeffs = 1;
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// Number of coefficients of the polynomial.
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optional int32 num_coeffs = 2;
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}
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// RLWE Ciphertext
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message SerializedSymmetricRlweCiphertext {
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// Polynomials composing the ciphertext
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repeated SerializedNttPolynomial c = 1;
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// The power of the secret key that the ciphertext is encrypted with.
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optional int32 power_of_s = 2;
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// A heuristic on the amount of error in the ciphertext.
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optional double error = 3;
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}
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// RLWE RelinearizationKey
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message SerializedRelinearizationKey {
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// Polynomial composing the matrix
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repeated SerializedNttPolynomial c = 1;
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// The modulus used to decompose the coefficients of the polynomials. Ranges
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// from 1 to the number of bits of the modulus.
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optional int32 log_decomposition_modulus = 2;
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// For n parts, the key can relinearize an n-component ciphertext to a
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// 2-component ciphertext.
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optional int32 num_parts = 3;
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// Seed used to compress this key.
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optional bytes prng_seed = 4; // Required
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// The power of s that corresponds to the key. The field is 1 if the key is
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// RelinearizationKey.
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optional int32 power_of_s = 5;
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}
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// RLWE GaloisKeys.
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message SerializedGaloisKey {
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// The key-switching matrix
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optional SerializedRelinearizationKey key = 1;
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} |