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8 changes: 8 additions & 0 deletions shell_encryption/relinearization_key.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -229,6 +229,10 @@ RelinearizationKey<ModularInt>::Create(const SymmetricRlweKey<ModularInt>& key,
return absl::InvalidArgumentError(absl::StrCat(
"Log decomposition modulus, ", log_decomposition_modulus,
", must be at most: ", key.ModulusParams()->log_modulus, "."));
} else if (log_decomposition_modulus >= 32) {
return absl::InvalidArgumentError(
absl::StrCat("Log decomposition modulus, ", log_decomposition_modulus,
", must be less than 32."));
}
RLWE_ASSIGN_OR_RETURN(auto decomposition_modulus,
ModularInt::ImportInt(key.ModulusParams()->One()
Expand Down Expand Up @@ -401,6 +405,10 @@ RelinearizationKey<ModularInt>::Deserialize(
return absl::InvalidArgumentError(absl::StrCat(
"Log decomposition modulus, ", serialized.log_decomposition_modulus(),
", must be at most: ", modulus_params->log_modulus, "."));
} else if (serialized.log_decomposition_modulus() >= 32) {
return absl::InvalidArgumentError(absl::StrCat(
"Log decomposition modulus, ", serialized.log_decomposition_modulus(),
", must be less than 32."));
}

int polynomials_per_key_part = serialized.c_size() / expected_num_key_parts;
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