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crackle — Crack and decrypt Bluetooth Low Energy (BLE) encryption. More information: <https://github.com/miker

Submitted by: @import:tldr-pages·Mar 2, 2026·

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cracklecommandandclicrackbluetoothlowdecrypt

Problem

How to use the crackle command: Crack and decrypt Bluetooth Low Energy (BLE) encryption. More information: <https://github.com/mikeryan/crackle>.

Solution

crackle — Crack and decrypt Bluetooth Low Energy (BLE) encryption. More information: <https://github.com/mikeryan/crackle>.

Check whether the recorded BLE communications contain the packets necessary for recovering temporary keys (TKs):

crackle -i {{path/to/input.pcap}}

Use brute force to recover the TK of the recorded pairing events and use it to decrypt all subsequent communications:

crackle -i {{path/to/input.pcap}} -o {{path/to/decrypted.pcap}}

Use the specified long-term key (LTK) to decrypt the recorded communication:

crackle -i {{path/to/input.pcap}} -o {{path/to/decrypted.pcap}} -l {{81b06facd90fe7a6e9bbd9cee59736a7}}

Code Snippets

Check whether the recorded BLE communications contain the packets necessary for recovering temporary keys (TKs)

crackle -i {{path/to/input.pcap}}

Use brute force to recover the TK of the recorded pairing events and use it to decrypt all subsequent communications

crackle -i {{path/to/input.pcap}} -o {{path/to/decrypted.pcap}}

Use the specified long-term key (LTK) to decrypt the recorded communication

crackle -i {{path/to/input.pcap}} -o {{path/to/decrypted.pcap}} -l {{81b06facd90fe7a6e9bbd9cee59736a7}}

Context

tldr-pages: common/crackle

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