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Last active October 30, 2020 04:30
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Create an SSH key in PEM format
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sshPemKey.md

Create an SSH key in PEM format

I have not been able to use ssh-keygen -e to reliably generate a private key for SSH in PEM format. This format is sometimes used by commercial products. Instead, I had to convert the key using openssl.

# generate an RSA key of size 2048 bits
ssh-keygen -t rsa -b 2048 -f azure -C 'azure-dev'

# copy key to x.x.x.x and add to authorized_keys

# convert private key to PEM format
openssl rsa -in azure -outform PEM -out azure.pem
chmod 700 azure.pem

# test key
ssh -i ./azure.pem [email protected] -p 22

# add a passphrase
ssh-keygen -p -f azure.pem

# does it have a passphrase
ssh-keygen -y -f azure.pem

# test key, now with passphrase
ssh -i ./azure.pem [email protected] -p 22
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