# HSM4 **URL:** https://community.zymbit.com/c/hsm4/21.md [Latest](https://community.zymbit.com/latest.md) · [Categories](https://community.zymbit.com/categories.md) · [Tags](https://community.zymbit.com/tags.md) --- ## [RPi Zero 2 W + HSM4 Qs](https://community.zymbit.com/t/rpi-zero-2-w-hsm4-qs/1738)
**Author:** [@Strykar](https://community.zymbit.com/u/Strykar)\ **Replies:** 0\ **Last updated:** [February 21, 2025, 8:25pm UTC](https://community.zymbit.com/t/rpi-zero-2-w-hsm4-qs/1738 "2025-02-21T20:25:54Z")
I was evaluating tiny, low power SoCs that could run a simple Web3 Go application and even run unattended on solar when I came across the Zymkey4 - an amazing solution for storing valuable crypto keys on an RPi Zero with… --- ## [Screws for hsm4](https://community.zymbit.com/t/screws-for-hsm4/1629)
**Author:** [@tennisparty](https://community.zymbit.com/u/tennisparty)\ **Replies:** 1\ **Last updated:** [February 17, 2024, 5:50pm UTC](https://community.zymbit.com/t/screws-for-hsm4/1629 "2024-02-17T17:50:46Z")
What size and thread screw do I need for the hsm4 to secure it onto a pcb? --- ## [AWS IoT with HSM4 on RPi4, bookworm64](https://community.zymbit.com/t/aws-iot-with-hsm4-on-rpi4-bookworm64/1624)
**Author:** [@gok](https://community.zymbit.com/u/gok)\ **Replies:** 0\ **Last updated:** [January 16, 2024, 11:10am UTC](https://community.zymbit.com/t/aws-iot-with-hsm4-on-rpi4-bookworm64/1624 "2024-01-16T11:10:01Z")
I want to let RPi4(bookworm64) connect to AWS IoT. I followed the documentation, but I cannot go well. I have two questions: I tried this command to create CSR, but an “invalid engine” error occurs. $ openssl req -ke… --- ## [Kicad pinout](https://community.zymbit.com/t/kicad-pinout/1610)
**Author:** [@tennisparty](https://community.zymbit.com/u/tennisparty)\ **Replies:** 2\ **Last updated:** [December 5, 2023, 5:25pm UTC](https://community.zymbit.com/t/kicad-pinout/1610 "2023-12-05T17:25:51Z")
Hello, I am trying to design a HSM4 into my project. I am struggling because the pinout on the DF40C-30DP-0.4V(51) connector is a mirror image of the Zymkey HSM4 cad layout Do I need to alter the pin assignment on … --- ## ['-engine zymkey\_ssl' of openssl works?](https://community.zymbit.com/t/engine-zymkey-ssl-of-openssl-works/1580)
**Author:** [@gok](https://community.zymbit.com/u/gok)\ **Replies:** 1\ **Last updated:** [October 17, 2023, 5:09pm UTC](https://community.zymbit.com/t/engine-zymkey-ssl-of-openssl-works/1580 "2023-10-17T17:09:02Z")
Hi, I want to compare crypto processing speed between offloaded using HSM4 and not offloaded on RPi4. I’ve expected: CPU usage of openssl with ‘-engine zymkey\_ssl’ is lower There is something difficult between a resu… --- ## [Getting Started with HSM4: Unable to locate package zk\*](https://community.zymbit.com/t/getting-started-with-hsm4-unable-to-locate-package-zk/1578)
**Author:** [@gok](https://community.zymbit.com/u/gok)\ **Replies:** 3\ **Last updated:** [October 17, 2023, 9:58am UTC](https://community.zymbit.com/t/getting-started-with-hsm4-unable-to-locate-package-zk/1578 "2023-10-17T09:58:31Z")
Hi, I’m going through the getting started document on my RPi4B with raspbian bullseye. When I exec the following command, the prompt returns without rebooting: curl -G https://s3.amazonaws.com/zk-sw-repo/install\_zk\_sw… --- ## [Connect HSM4 to cube pilot](https://community.zymbit.com/t/connect-hsm4-to-cube-pilot/1537)
**Author:** [@Wiki](https://community.zymbit.com/u/Wiki)\ **Replies:** 3\ **Last updated:** [May 22, 2023, 4:57pm UTC](https://community.zymbit.com/t/connect-hsm4-to-cube-pilot/1537 "2023-05-22T16:57:46Z")
I saw that zymbit products are all designed for raspberry pi and nvidia jetson. I want to know if I connect HSM4 to cube pilot i2c port it will work or not. --- ## [Installation Missing files?](https://community.zymbit.com/t/installation-missing-files/1331)
**Author:** [@kladskull](https://community.zymbit.com/u/kladskull)\ **Replies:** 1\ **Last updated:** [December 21, 2021, 4:45am UTC](https://community.zymbit.com/t/installation-missing-files/1331 "2021-12-21T04:45:06Z")
Following these directions: (using ubuntu 20.04) The light is working correctly (every three seconds) When I get to this step… there is no /usr/local/share/zymkey directory? The quickest way to get started is to se… --- ## [Can the HSM4 encrypt the SD card like the Zymbit does?](https://community.zymbit.com/t/can-the-hsm4-encrypt-the-sd-card-like-the-zymbit-does/1322)
**Author:** [@kladskull](https://community.zymbit.com/u/kladskull)\ **Replies:** 3\ **Last updated:** [December 10, 2021, 9:41pm UTC](https://community.zymbit.com/t/can-the-hsm4-encrypt-the-sd-card-like-the-zymbit-does/1322 "2021-12-10T21:41:31Z")
Can I encrypt my SD card using the HSM4? (I know I can do this with the Zymbit). --- ## [Enabling I2C Bus](https://community.zymbit.com/t/enabling-i2c-bus/1204)
**Author:** [@secure](https://community.zymbit.com/u/secure)\ **Replies:** 1\ **Last updated:** [June 26, 2021, 12:52am UTC](https://community.zymbit.com/t/enabling-i2c-bus/1204 "2021-06-26T00:52:28Z")
I am trying to automate some of the installation process. I thought I could change the file /boot/config.txt to uncomment the # in front of dtparam=i2c\_arm=on and this would work. However … neither the HSM4 nor the Zymke… --- ## [Missing installation file? HSM4](https://community.zymbit.com/t/missing-installation-file-hsm4/1197)
**Author:** [@secure](https://community.zymbit.com/u/secure)\ **Replies:** 2\ **Last updated:** [June 22, 2021, 1:56pm UTC](https://community.zymbit.com/t/missing-installation-file-hsm4/1197 "2021-06-22T13:56:46Z")
I have been trying to install the HSM4 and complete disk encryption. However I see the error in the encryption installation. cannot stat '/var/lib/zymbit/': No such file or directory This is weird, as I keep rebooting … --- ## [Encrypting Your Root File System with HSM4](https://community.zymbit.com/t/encrypting-your-root-file-system-with-hsm4/968)
**Author:** [@Michelle\_of\_Zymbit](https://community.zymbit.com/u/Michelle_of_Zymbit)\ **Replies:** 1\ **Last updated:** [June 16, 2021, 5:05pm UTC](https://community.zymbit.com/t/encrypting-your-root-file-system-with-hsm4/968 "2021-06-16T17:05:39Z")
See Zymbit’s Documentation Site for the most recent Encrypting RFS documentation.