// BSD 2-Clause License // Copyright (c) 2023, OpenFHE // All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are met: // 1. Redistributions of source code must retain the above copyright notice, this // list of conditions and the following disclaimer. // 2. Redistributions in binary form must reproduce the above copyright notice, // this list of conditions and the following disclaimer in the documentation // and/or other materials provided with the distribution. // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #ifndef CRYPTOPARAMS_DOCSTRINGS_H #define CRYPTOPARAMS_DOCSTRINGS_H const char* ccparams_doc = R"doc( Crypto parameters for the BFV, BGV and CKKS scheme. :ivar SCHEME scheme: Scheme ID :ivar PlaintextModulus ptModulus: PlaintextModulus ptModulus is used in BGV/BFV type schemes and impacts noise growth :ivar int digitSize: digitSize is used in BV Key Switching only (KeySwitchTechnique = BV) and impacts noise growth :ivar float standardDeviation: standardDeviation is used for Gaussian error generation :ivar SecretKeyDist secretKeyDist: Secret key distribution: GAUSSIAN, UNIFORM_TERNARY, etc. :ivar int maxRelinSkDeg: Max relinearization degree of secret key polynomial (used for lazy relinearization) :ivar KeySwitchTechnique ksTech: key switching technique: BV or HYBRID currently :ivar ScalingTechnique scalTech: rescaling/modulus switching technique used in CKKS/BGV: FLEXIBLEAUTOEXT, FIXEDMANUL, FLEXIBLEAUTO, etc. :ivar int batchSize: max batch size of messages to be packed in encoding (number of slots) :ivar ProxyReEncryptionMode PREMode: PRE security mode :ivar MultipartyMode multipartyMode: Multiparty security mode in BFV/BGV :ivar ExecutionMode executionMode: Execution mode in CKKS :ivar DecryptionNoiseMode decryptionNoiseMode: Decryption noise mode in CKKS :ivar float noiseEstimate: Noise estimate in CKKS for NOISE_FLOODING_DECRYPT mode. :ivar float desiredPrecision: Desired precision for 128-bit CKKS. We use this value in NOISE_FLOODING_DECRYPT mode to determine the scaling factor. :ivar float statisticalSecurity: Statistical security of CKKS in NOISE_FLOODING_DECRYPT mode. This is the bound on the probability of success that any adversary can have. Specifically, they a probability of success of at most 2^(-statisticalSecurity). :ivar float numAdversarialQueries: This is the number of adversarial queries a user is expecting for their application, which we use to ensure security of CKKS in NOISE_FLOODING_DECRYPT mode. :ivar int thresholdNumOfParties: This is the number of parties in a threshold application, which is used for bound on the joint secret key :ivar int firstModSize: firstModSize and scalingModSize are used to calculate ciphertext modulus. The ciphertext modulus should be seen as: Q = q_0 * q_1 * ... * q_n * q' where q_0 is first prime, and it's number of bits is firstModSize other q_i have same number of bits and is equal to scalingModSize the prime q' is not explicitly given, but it is used internally in CKKS and BGV schemes (in *EXT scaling methods) :ivar int scalingModSize: firstModSize and scalingModSize are used to calculate ciphertext modulus. The ciphertext modulus should be seen as: Q = q_0 * q_1 * ... * q_n * q' where q_0 is first prime, and it's number of bits is firstModSize other q_i have same number of bits and is equal to scalingModSize the prime q' is not explicitly given, but it is used internally in CKKS and BGV schemes (in *EXT scaling methods) :ivar int numLargeDigits: see KeySwitchTechnique - number of digits in HYBRID key switching :ivar int multiplicativeDepth: multiplicative depth :ivar SecurityLevel securityLevel: security level: We use the values from the security standard at http://homomorphicencryption.org/wp-content/uploads/2018/11/HomomorphicEncryptionStandardv1.1.pdf For given ring dimension and security level we have upper bound of possible highest modulus (Q for BV or P*Q for HYBRID) :ivar int ringDim: ring dimension N of the scheme : the ring is Z_Q[x] / (X^N+1) :ivar int evalAddCount: number of additions (used for setting noise in BGV and BFV) :ivar int keySwitchCount: number of key switching operations (used for setting noise in BGV and BFV) :ivar int multiHopModSize: size of moduli used for PRE in the provable HRA setting :ivar EncryptionTechnique encryptionTechnique: STANDARD or EXTENDED mode for BFV encryption :ivar MultiplicationTechnique multiplicationTechnique: multiplication method in BFV: BEHZ, HPS, etc. )doc"; #endif // CRYPTOPARAMS_DOCSTRINGS_H