1$ openssl rsa -aes256 -in ./id_rsa -out ./id_rsa.hashed 2writing RSA key 3Enter PEM pass phrase: 4Verifying - Enter PEM pass phrase: You should then use './id_rsa.hashed' as your private key. See https://security.stackexchange.com/questions/59136/can-i-add-a-password-to-an-existing-private-key for details.

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