# Logstash cipher filter issue
**URL:** https://discuss.elastic.co/t/logstash-cipher-filter-issue/185549
**Category:** Logstash
**Created:** [June 13, 2019, 6:36am UTC](https://discuss.elastic.co/t/logstash-cipher-filter-issue/185549 "2019-06-13T06:36:06Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@yogender20](https://discuss.elastic.co/u/yogender20)
#### Post date: [June 13, 2019, 6:36am UTC](https://discuss.elastic.co/t/logstash-cipher-filter-issue/185549/1 "2019-06-13T06:36:06Z")
Hello,
I'm encrypting some data using logstash cipher filter & store the encrypted data in elasticsearch. The code snippet used for the encryption is as follow:
filter {
cipher {
algorithm =\> "aes-256-cbc"
cipher\_padding =\> 1
iv\_random\_length =\> 16
key =\> "\<32\_DIGITS\_KEY\>"
key\_size =\> 32
mode =\> "encrypt"
source =\> "[message]"
target =\> "[message\_enc]"
}
}
When I read the data from this elasticsearch index using java code & decrypt it then I'm getting same random unicode string before my actual data. Sample random string is "r��1�\>\<��B9c�M\*\*\\*\*"
I didn't find anything in my code to resolve this issue.
Please help me in resolving this.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 11, 2019, 9:05am UTC](https://discuss.elastic.co/t/logstash-cipher-filter-issue/185549/3 "2019-07-11T09:05:04Z")
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