# Logstash and Anonymize
**URL:** https://discuss.elastic.co/t/logstash-and-anonymize/22912
**Category:** Elasticsearch
**Created:** [March 26, 2015, 4:19am UTC](https://discuss.elastic.co/t/logstash-and-anonymize/22912 "2015-03-26T04:19:32Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@smenon](https://discuss.elastic.co/u/smenon)
#### Post date: [March 26, 2015, 4:19am UTC](https://discuss.elastic.co/t/logstash-and-anonymize/22912/1 "2015-03-26T04:19:32Z")
Hi,
I was trying to get more information on the Anonymize function with
logstash .I was planning to anonymize certain fields due to an application
requirement .I understand that Logstash can hash the values of specified
field with consisten hashes.Does it maintain any internal hash table
mapping the hash value to the original field value ?
Regards
Sanjay
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### Author:  [@Joshua\_Rich1](https://discuss.elastic.co/u/Joshua_Rich1)
#### Post date: [March 26, 2015, 5:11am UTC](https://discuss.elastic.co/t/logstash-and-anonymize/22912/2 "2015-03-26T05:11:45Z")
Hi Sanjay,
Best to ask this in the logstash-users Google Group.
On Thursday, 26 March 2015 15:19:32 UTC+11, sanjay menon wrote:
> Hi,
>
> I was trying to get more information on the Anonymize function with
> logstash .I was planning to anonymize certain fields due to an application
> requirement .I understand that Logstash can hash the values of specified
> field with consisten hashes.Does it maintain any internal hash table
> mapping the hash value to the original field value ?
>
> Regards
>
> Sanjay
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 12:23am UTC](https://discuss.elastic.co/t/logstash-and-anonymize/22912/3 "2017-07-06T00:23:53Z")