# ADDP password encryption still not known

**URL:** <https://forums.digi.com/t/addp-password-encryption-still-not-known/21054>\
**Category:** Rabbit Software\
**Tags:** addp, password, encryption\
**Created:** [January 21, 2020, 9:34am UTC](https://forums.digi.com/t/addp-password-encryption-still-not-known/21054 "2020-01-21T09:34:57Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![GInsStSt](https://avatars.discourse-cdn.com/v4/letter/g/5daacb/32.png) [@GInsStSt](https://forums.digi.com/u/GInsStSt)\
**Post date:** [January 21, 2020, 9:34am UTC](https://forums.digi.com/t/addp-password-encryption-still-not-known/21054/1 "2020-01-21T09:34:57Z")

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…long time ago, since these chat was updated, but I still found no answer to exactly this topic “How the ADDP password need to be encrypted, that it works with ADDP-config and -reboot ?”. I checked out the previous mentioned Dynamic C packages V10.60 up to V10.72D, but all I found is “This implementation does not include MD5 Challenge/Response for sending hashed passwords.”. Can someone help me to figure this out, that I can build a library for 32- and 64-bits by my own ? Thanks in advance, best regards Stefan

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**Author:** ![TomCollins](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/tomcollins/32/37_2.png) [@TomCollins](https://forums.digi.com/u/TomCollins)\
**Post date:** [April 10, 2020, 11:53am UTC](https://forums.digi.com/t/addp-password-encryption-still-not-known/21054/2 "2020-04-10T11:53:43Z")

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I wrote the ADDP library for Rabbit, and it is some sort of MD5 challenge/response but I don’t have access to the documentation to look it up.

I did come across a reference to this C++ library which might have working source code: [https://www.digi.com/support/knowledge-base/addp-c-library-40002892-a-zip-guid-debugging-and-c](https://www.digi.com/support/knowledge-base/addp-c-library-40002892-a-zip-guid-debugging-and-c)