# List of accepted algorithms for TLS certificates **URL:** \ **Category:** Security\ **Created:** [January 23, 2024, 10:34pm UTC](https://forum.opensearch.org/t/list-of-accepted-algorithms-for-tls-certificates/17555 "2024-01-23T22:34:06Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![jpelletier\_2023](https://avatars.discourse-cdn.com/v4/letter/j/f19dbf/32.png) [@jpelletier\_2023](https://forum.opensearch.org/u/jpelletier_2023)\ **Post date:** [January 23, 2024, 10:34pm UTC](https://forum.opensearch.org/t/list-of-accepted-algorithms-for-tls-certificates/17555/1 "2024-01-23T22:34:06Z")
**Versions** (relevant - OpenSearch/Dashboard/Server OS/Browser): 2.11.1 Opensearch & Opensearch Dashboards **Describe the issue** : We are attempting to use TLS certificates which contain ECDSA signing algorithms and Opensearch Dashboards is throwing an error that it cannot find the certificate. I have opened this Feature request as it does not seem like Dashboards supports this type of certificate: [Support for TLS certificates withRSA public key size of 3096 and ECDSA signing algorithm. · Issue #5721 · opensearch-project/OpenSearch-Dashboards · GitHub](https://github.com/opensearch-project/OpenSearch-Dashboards/issues/5721). We would like to know what types of algorithms are allowed to be used for certifcates. I do not see anything in the documentation and we would like to be able to provide this info to our clients. Is there any place where this is documented? **Configuration** : N/A **Relevant Logs or Screenshots** : ---
**Author:** ![Eugene7](https://avatars.discourse-cdn.com/v4/letter/e/bbce88/32.png) [@Eugene7](https://forum.opensearch.org/u/Eugene7)\ **Post date:** [January 24, 2024, 3:47pm UTC](https://forum.opensearch.org/t/list-of-accepted-algorithms-for-tls-certificates/17555/2 "2024-01-24T15:47:58Z")
Hi @jpelletier_2023, Do you want to use TLS certificates to establish communication between OpenSearch Dashboards and OpenSearch or a client’s browser?