SSH load key error in libcrypto

Occasionally on Ubuntu 22.04 I've experienced the error message shown below when trying to connect to a server using an ssh key: 

 $ ssh user@server.com -i ~/.ssh/id_ed25519 

Load key "id_ed25519": error in libcrypto 

 I finally realized the problem was the presence of DOS style CRLF end of line designators. Using dos2unix to convert the end of line designators resolved the issue. 

 $ dos2unix ~/.ssh/id_ed25519 

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