# Estimating the Security of Ring Learning with Errors (RLWE)

DevFeed: [Estimating the Security of Ring Learning with Errors (RLWE)](<https://devfeed.tech/articles/estimating-the-security-of-ring-learning-with-errors-rlwe-40461.md>)

Original publisher: [Read original article](<https://www.jeremykun.com/2022/12/28/estimating-the-security-of-ring-learning-with-errors-rlwe/>)

Published: 2022-12-28T14:52:01Z

Content type: tutorial

Language: en

Sources: [Jeremy Kun](<https://devfeed.tech/sources/jeremy-kun.md>)

Topics: [Cryptography](<https://devfeed.tech/topics/cryptography.md>), [Security](<https://devfeed.tech/topics/security.md>), [Estimator](<https://devfeed.tech/topics/estimator.md>), [FHE](<https://devfeed.tech/topics/fhe.md>)

Tags: [cod](<https://devfeed.tech/tags/cod.md>), [cryptography](<https://devfeed.tech/tags/cryptography.md>), [estimator](<https://devfeed.tech/tags/estimator.md>), [lattice-cryptography](<https://devfeed.tech/tags/lattice-cryptography.md>), [learning-with-errors](<https://devfeed.tech/tags/learning-with-errors.md>), [lwe](<https://devfeed.tech/tags/lwe.md>), [mathematics](<https://devfeed.tech/tags/mathematics.md>), [programming](<https://devfeed.tech/tags/programming.md>), [ring-learning-with-errors](<https://devfeed.tech/tags/ring-learning-with-errors.md>), [rlwe](<https://devfeed.tech/tags/rlwe.md>), [sage](<https://devfeed.tech/tags/sage.md>), [security](<https://devfeed.tech/tags/security.md>), [test](<https://devfeed.tech/tags/test.md>), [top](<https://devfeed.tech/tags/top.md>)

## AI overview

The article explains how to estimate the security of lattice-based schemes based on Learning With Errors (LWE) and Ring Learning With Errors (RLWE). It introduces LWE parameters and describes how the Lattice Estimator estimates the costs of known lattice attacks for a given instance.

## Source excerpt

This article was written by my colleague, Cathie Yun. Cathie is an applied cryptographer and security engineer, currently working with me to make fully homomorphic encryption a reality at Google. She's also done a lot of cool stuff with zero knowledge proofs. In previous articles, we've discussed techniques used in Fully Homomorphic Encryption (FHE) schemes. The basis for many FHE schemes, as well as other privacy-preserving protocols, is the Learning With Errors (LWE) problem.