# \#feature-requests **URL:** https://openfhe.discourse.group/tag/feature-requests/8.md [Latest](https://openfhe.discourse.group/latest.md) · [Categories](https://openfhe.discourse.group/categories.md) · [Tags](https://openfhe.discourse.group/tags.md) --- ## [Suggestion on error message](https://openfhe.discourse.group/t/suggestion-on-error-message/2312)
**Author:** [@narger](https://openfhe.discourse.group/u/narger)\ **Replies:** 2\ **Last updated:** [April 17, 2026, 1:22pm UTC](https://openfhe.discourse.group/t/suggestion-on-error-message/2312 "2026-04-17T13:22:41Z")
Hi developers, i open a thread here as i can not open an issue in github I’d like to suggest a minor change to the library which might help users. In particular, when one tries to evaluate a rotation in CKKS without fir… --- ## [About parallel evaluation of chebyshev polynomials](https://openfhe.discourse.group/t/about-parallel-evaluation-of-chebyshev-polynomials/2228)
**Author:** [@narger](https://openfhe.discourse.group/u/narger)\ **Replies:** 1\ **Last updated:** [December 9, 2025, 10:45am UTC](https://openfhe.discourse.group/t/about-parallel-evaluation-of-chebyshev-polynomials/2228 "2025-12-09T10:45:12Z")
Hello all, Following the issue I raised in this thread, I created a fork of the library where I defined the function EvalChebyshevSeriesPSBatch(c, {coeffs1, coeffs2, ...}, a, b) that somewhat extends EvalChebyshevSeries… --- ## [Reduction of rotation keys CKKS](https://openfhe.discourse.group/t/reduction-of-rotation-keys-ckks/2156)
**Author:** [@srovira](https://openfhe.discourse.group/u/srovira)\ **Replies:** 2\ **Last updated:** [September 10, 2025, 6:52am UTC](https://openfhe.discourse.group/t/reduction-of-rotation-keys-ckks/2156 "2025-09-10T06:52:49Z")
Hello, I’ve been wondering if there are plans to implement (rotation) key size reduction techniques for CKKS. In particular, I’m referring to \[LLKN23\] and the more recent \[CKP25\]. I’ve looked around the codebase and in t… --- ## [Print Noise in OpenFHE](https://openfhe.discourse.group/t/print-noise-in-openfhe/2155)
**Author:** [@pikaqiu](https://openfhe.discourse.group/u/pikaqiu)\ **Replies:** 1\ **Last updated:** [September 5, 2025, 12:44am UTC](https://openfhe.discourse.group/t/print-noise-in-openfhe/2155 "2025-09-05T00:44:25Z")
How can I print noise with secretKey for bgvrns/bfvrns in openfhe-v1.4.0? Thank you very much for your help! --- ## [A subset of the keys to perform computation and decryption](https://openfhe.discourse.group/t/a-subset-of-the-keys-to-perform-computation-and-decryption/2061)
**Author:** [@svetlana](https://openfhe.discourse.group/u/svetlana)\ **Replies:** 1\ **Last updated:** [June 4, 2025, 3:48pm UTC](https://openfhe.discourse.group/t/a-subset-of-the-keys-to-perform-computation-and-decryption/2061 "2025-06-04T15:48:07Z")
Hello. We are using the Python wrapper and working with CKKS. In the threshold example with 5 parties, openfhe-python/examples/pke/threshold-fhe-5p.py at main · openfheorg/openfhe-python, all 5 keys are used for decryp… --- ## [Cannot pickle 'openfhe.Ciphertext' object](https://openfhe.discourse.group/t/cannot-pickle-openfhe-ciphertext-object/2042)
**Author:** [@g\_tasop](https://openfhe.discourse.group/u/g_tasop)\ **Replies:** 2\ **Last updated:** [June 3, 2025, 8:45am UTC](https://openfhe.discourse.group/t/cannot-pickle-openfhe-ciphertext-object/2042 "2025-06-03T08:45:32Z")
Hello, I am trying to use multiple processes to evaluate multiple ciphertexts in the same time, by using openfhe-python (version 1.3.0.0). To do so, I tried to implement a simple toy example with BFV by using the python … --- ## [Precomputing chebyshev coefficients](https://openfhe.discourse.group/t/precomputing-chebyshev-coefficients/2022)
**Author:** [@narger](https://openfhe.discourse.group/u/narger)\ **Replies:** 4\ **Last updated:** [May 12, 2025, 9:50am UTC](https://openfhe.discourse.group/t/precomputing-chebyshev-coefficients/2022 "2025-05-12T09:50:57Z")
Hello, I don’t know if already available as feature, but, is it possible to store/save the coefficients of a Chebyshev approximation, given a degree and interval? (assuming CKKS) Currently, in order to gain some time d… --- ## [CKKS examples fail to run when setting NATIVE\_INT as 32 globally](https://openfhe.discourse.group/t/ckks-examples-fail-to-run-when-setting-native-int-as-32-globally/1913)
**Author:** [@JianmingTong](https://openfhe.discourse.group/u/JianmingTong)\ **Replies:** 11\ **Last updated:** [March 12, 2025, 7:23pm UTC](https://openfhe.discourse.group/t/ckks-examples-fail-to-run-when-setting-native-int-as-32-globally/1913 "2025-03-12T19:23:53Z")
I have a use case to only use \< 32-bit modulus, therefore I modify the CMakeLists.txt to change NATIVE\_SIZE from 64 into 32, as listed below. if( NOT NATIVE\_SIZE ) set( NATIVE\_SIZE 32 ) endif() Accordingly, I set t… --- ## [Oblivious Message Retrieval](https://openfhe.discourse.group/t/oblivious-message-retrieval/1728)
**Author:** [@keewoolee](https://openfhe.discourse.group/u/keewoolee)\ **Replies:** 1\ **Last updated:** [November 19, 2024, 4:57am UTC](https://openfhe.discourse.group/t/oblivious-message-retrieval/1728 "2024-11-19T04:57:45Z")
Proof of Concept Implementation of an Improved Oblivious Message Retrieval (OMR) Scheme Paper: SophOMR: Improved Oblivious Message Retrieval from SIMD-Aware Homomorphic Compression Code: GitHub - keewoolee/SophOMR: Pro… --- ## [Threshold CGGI Implementation](https://openfhe.discourse.group/t/threshold-cggi-implementation/1637)
**Author:** [@fhedude](https://openfhe.discourse.group/u/fhedude)\ **Replies:** 1\ **Last updated:** [October 12, 2024, 9:38pm UTC](https://openfhe.discourse.group/t/threshold-cggi-implementation/1637 "2024-10-12T21:38:22Z")
I’ve noticed that there is a feature branch implementing threshold CGGI. I was wondering what threshold scheme it is using and whether there is noise flooding in the distributed decryption? As you know, the noise floodin… --- ## [Measure the Operations in the Bootstrapping Pipeline](https://openfhe.discourse.group/t/measure-the-operations-in-the-bootstrapping-pipeline/1137)
**Author:** [@moghit02](https://openfhe.discourse.group/u/moghit02)\ **Replies:** 8\ **Last updated:** [March 22, 2024, 1:32am UTC](https://openfhe.discourse.group/t/measure-the-operations-in-the-bootstrapping-pipeline/1137 "2024-03-22T01:32:20Z")
Hello, I would like to explore using CKKS/RNS bootstrapping and at the same time test various parameters and their impact on different algorithms in the bootstrapping pipeline such as ModUp, SubSum, CoeffToSlots, EvalSin… --- ## [What is the differences among firstModSize, scalingModSize and scalingFactor?](https://openfhe.discourse.group/t/what-is-the-differences-among-firstmodsize-scalingmodsize-and-scalingfactor/344)
**Author:** [@lance](https://openfhe.discourse.group/u/lance)\ **Replies:** 3\ **Last updated:** [December 14, 2023, 7:54pm UTC](https://openfhe.discourse.group/t/what-is-the-differences-among-firstmodsize-scalingmodsize-and-scalingfactor/344 "2023-12-14T19:54:17Z")
In CKKS, I am confused by the three parameters that firstModSize, scalingModSize and scalingFactor. In my view, the scalingFactor probably is the logp in CKKS scheme, but what is the means of firstModSize, scalingModSiz… --- ## [Possible suggestion regarding security level feedback](https://openfhe.discourse.group/t/possible-suggestion-regarding-security-level-feedback/919)
**Author:** [@narger](https://openfhe.discourse.group/u/narger)\ **Replies:** 1\ **Last updated:** [November 17, 2023, 2:34pm UTC](https://openfhe.discourse.group/t/possible-suggestion-regarding-security-level-feedback/919 "2023-11-17T14:34:20Z")
Hello everyone, In the context of CKKS, I think it would be useful that, when OpenFHE says that the current parameters do not comply with the security standards, it would output: the upper bound for the ciphertext mod… --- ## [How to get the limitations on computational data](https://openfhe.discourse.group/t/how-to-get-the-limitations-on-computational-data/717)
**Author:** [@ailanxier](https://openfhe.discourse.group/u/ailanxier)\ **Replies:** 1\ **Last updated:** [July 25, 2023, 11:35pm UTC](https://openfhe.discourse.group/t/how-to-get-the-limitations-on-computational-data/717 "2023-07-25T23:35:44Z")
As a user who does not have a deep understanding of the theory of fully homomorphic encryption, how am I supposed to find the limiting relationship between the homomorphic context parameter and the range of data it can a… --- ## [CKKS and FHEW ciphertext interconversion](https://openfhe.discourse.group/t/ckks-and-fhew-ciphertext-interconversion/324)
**Author:** [@hamm](https://openfhe.discourse.group/u/hamm)\ **Replies:** 3\ **Last updated:** [February 14, 2023, 3:57am UTC](https://openfhe.discourse.group/t/ckks-and-fhew-ciphertext-interconversion/324 "2023-02-14T03:57:46Z")
I need to compare the calculated ckks ciphertext. May I ask whether openFHE has a conversion method for CKKS and FHEW ciphertext？ --- ## [Progress of scheme switching](https://openfhe.discourse.group/t/progress-of-scheme-switching/299)
**Author:** [@Maokami](https://openfhe.discourse.group/u/Maokami)\ **Replies:** 6\ **Last updated:** [January 14, 2023, 5:31pm UTC](https://openfhe.discourse.group/t/progress-of-scheme-switching/299 "2023-01-14T17:31:21Z")
Continuing the discussion from Status of the CKKS \<-\> DM/CGGI scheme switch: Hi! I’m a graduate student studying PL(programming language) and SE(Software Engineering). I’m working on FHE compiler that can help non-expe… --- ## [Status of the CKKS \<-\> DM/CGGI scheme switch](https://openfhe.discourse.group/t/status-of-the-ckks-dm-cggi-scheme-switch/138)
**Author:** [@Florent](https://openfhe.discourse.group/u/Florent)\ **Replies:** 2\ **Last updated:** [September 28, 2022, 7:39am UTC](https://openfhe.discourse.group/t/status-of-the-ckks-dm-cggi-scheme-switch/138 "2022-09-28T07:39:31Z")
Hello! I have started experimenting with OpenFHE and find the fact that it implements all of the main FHE schemes really useful for comparing the speeds and capabilities of different ones! I was thinking of application… --- ## [About the Library Questions category](https://openfhe.discourse.group/t/about-the-library-questions-category/26)
**Author:** [@iquah](https://openfhe.discourse.group/u/iquah)\ **Replies:** 0
Use this category to ask questions, to report bugs or to post feature requests