1. Validating that the steps to create a SSH key are correct, check the options below:
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Absence of the encryption algorithm in pubkeyacceptedkeytypes present in the /etc/ssh/sshd_config file;
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If the pubkeyacceptedkeytypes line is commented, uncomment it and add the keys;
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Check if the pubkeyacceptedkeytypes line exists, if not, add it;