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The select box provides all available key storages, as they were set up by the administrator.
Depending on the system settings you can choose if and where the private key is saved and how you want the decryption to be performed. This depends on your security requirements and possibilities:
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The public key will be uploaded to the server's database, the private key is show in the next step.
From now on you are able to create or read end-to-end encrypted files.
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