You should be able to open a .pem file with any text editor/viewer. Such as Notepad for Windows or using cat/vim for Linux. You may need to update the permissions of the file so you can open it. Are you receiving any error when attempting to open the file?
It’s crucial to exercise caution when sharing the contents of a PEM file with third parties. Ensure that the third party is trustworthy and has a legitimate need for the PEM file. Verify their security practices and policies.
Hope this helps! Let me know if you are still facing issues or have further questions.
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