refactor(all): refactor oprf integer and hl APIs #1448
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| In *TFHE-rs*, this is possible through the method `generate_oblivious_pseudo_random` of `FheUint` and `FheInt`. | ||
| It relies on the use of the usual server keys. | ||
| The method takes two inputs: a seed `Seed`, which could be any `u128` value and an upper bound on the range of the random values `random_bits_count`. | ||
| It outputs a `FheIntN` or `FheUintN`, where `N` is the number of bits of the homomorphic integer. |
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this is not accurate anymore, the bounded method takes the random_bit_count
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| /// Generates an encrypted `num_block` blocks unsigned integer | ||
| /// taken uniformly in `[0, 2^random_bits_count[` using the given seed | ||
| /// The encryted value is oblivious to the server | ||
| /// It can be useful to make server random generation deterministic |
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docstring does not match the implem, to check all API levels
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| In *TFHE-rs*, this is possible through the function `generate_oblivious_pseudo_random` of `FheUint` and `FheInt`. | ||
| It relies on the use of the usual server keys. | ||
| The function takes two inputs: a seed `Seed`, which could be any `u128` value and an upper bound on the range of the random values `random_bits_count`. |
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this is not right, generate_oblivious_pseudo_random does not take a bit count :/
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| This document gives an example of generating pseudo random values in FHE that are not known by the server. | ||
| This document explains the mechanism and steps to generate an oblivious encrypted random value using only server keys. | ||
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| The goal is to give to the server the possibility to generate a random value, which will be obtained in a encrypted format and will remain unknown to the server. The implementation is based on [this article](https://eprint.iacr.org/2024/665). |
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in a encrypted format -> in an encrypted format
| The goal is to give to the server the possibility to generate a random value, which will be obtained in a encrypted format and will remain unknown to the server. The implementation is based on [this article](https://eprint.iacr.org/2024/665). | ||
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| This is possible through two methods on `FheUint` and `FheInt`: | ||
| - `generate_oblivious_pseudo_random` which return an integer taken uniformly in the full integer range (`[0; 2^N[` for a `FheUint_N` and `[-2^(N-1); 2^(N-1)[` for a `FheInt_N`). |
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FheUintN and FheIntN (no underscores)
| // The server cannot know what value was generated | ||
| let ct_res = FheUint8::generate_oblivious_pseudo_random(Seed(0), random_bits_count); | ||
| let ct_res = FheUint8::generate_oblivious_pseudo_random(Seed(0)); | ||
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