# \#decrypt

**URL:** https://forums.digi.com/tag/decrypt/2016.md

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## [How to decrypt the data payload of a XBEE 802.15.4 packet with the key ?](https://forums.digi.com/t/how-to-decrypt-the-data-payload-of-a-xbee-802-15-4-packet-with-the-key/14529)

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**Author:** [@enzol](https://forums.digi.com/u/enzol)\
**Replies:** 4\
**Last updated:** [March 13, 2015, 8:30am UTC](https://forums.digi.com/t/how-to-decrypt-the-data-payload-of-a-xbee-802-15-4-packet-with-the-key/14529 "2015-03-13T08:30:30Z")

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On the devices Xbee S1, how to encrypt and decrypt the data payload of the packet when we know the key ? Normally, the security level is known thanks to a flag in the packet but with the XBEE S1, the flag is None… AES-…