public-key - Read For Learn

Add comment to existing SSH public key

Just add a space after the key and put in the comment, e.g.: ssh-dss AAAAB3NzaC1kc3MAAACBAN+NX/rmUkRW7Xn7faglC/pxqbVIohbcVOt41VThMYORtMQr QSqMZugxew2s9iX4qRowHWLBRci6404nSydLiDe1q6/NmpK+oQ8zD1yXekl+fruBAYeno7f6dM7c 2swwwXY6knp4umXkLItxIUki6SXM0WfabJ8BwuNDyA8IrbFAAAAFQCynEN3MYXbs4AA7E/1I03jb B1rewAAAIAztzZUygrUI8XX6eE4zEHdTbv89AHYsAsf7fSAWnPxWc63dV0P5lCPNk58nze6+N+MD X7ZQADT6710fvbOmEFLciTwBGHHLxIV+1iTApJSsQp9T+pdkbFzBZ+mqQamZpSN1hC8fXe/Uty0D SbhnQ1qanwrOdKP1JV7DUgzehSfAAAAIEAwAyNYxUsGil46gZQea6sfhUnrBwyM6JnEbA6ogfGdS T2TDn1U5rfTV9UuNHzfoZ4CplVHclXyUPPhbKqcedpuRPJhHN/lp5MH7Q2tI/UxHvmePNHrXKk86 XYt7RzKHjWbHRxf84GIyTlKa8yfNfFlf9oNXdtBXcsJjHIvNsBk= ThisIsAComment The man page for sshd has a section on the authorized_keys format, where it states that the comment extends to the end of the line. While I haven’t tried it, you should … Read more

How to get a .pem file from ssh key pair?

According to this, this command can be used: ssh-keygen -f id_rsa -e -m pem This will convert your public key to an OpenSSL compatible format. Your private key is already in PEM format and can be used as is (as Michael Hampton stated). Double check if AWS isn’t asking for a (X.509) certificate in PEM … Read more

How do I make ssh fail rather than prompt for a password if the public-key authentication fails?

For OpenSSH there is BatchMode, which in addition to disabling password prompting, should disable querying for passphrase(s) for keys. BatchMode If set to “yes”, passphrase/password querying will be disabled. This option is useful in scripts and other batch jobs where no user is present to supply the password. The argument must be “yes” or “no”. … Read more

Create a public SSH key from the private key?

Use the -y option to ssh-keygen: ssh-keygen -f ~/.ssh/id_rsa -y > ~/.ssh/id_rsa.pub From the ‘man ssh-keygen’ -y This option will read a private OpenSSH format file and print an OpenSSH public key to stdout. Specify the private key with the -f option, yours might be dsa instead of rsa. The name of your private key … Read more

key_load_public: invalid format

As Roland mentioned in their answer, it’s a warning that the ssh-agent doesn’t understand the format of the public key and even then, the public key will not be used locally. However, I can also elaborate and answer why the warning is there. It simply boils down to the fact that the PuTTY Key Generator generates two different public key formats depending on … Read more

Permission denied (publickey,keyboard-interactive)

I tried to connect to planetlab node using ssh. It throws me error like Permission denied (publickey,keyboard-interactive). What does this mean? Here is the verbose of the exception. permissionssshpublic-key

What is the difference between a cer, pvk, and pfx file?

Windows uses .cer extension for an X.509 certificate. These can be in “binary” (ASN.1 DER), or it can be encoded with Base-64 and have a header and footer applied (PEM); Windows will recognize either. To verify the integrity of a certificate, you have to check its signature using the issuer’s public key… which is, in … Read more

Git: How to solve Permission denied (publickey) error when using Git?

If the user has not generated a ssh public/private key pair set before This info is working on theChaw but can be applied to all other git repositories which support SSH pubkey authentications. (See [gitolite][1], gitlab or github for example.) First start by setting up your own public/private key pair set. This can use either … Read more

ssh connect Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password)

I have a pair of keys to epadmin on machine A. I copied them on machine B in home folder of epadmin via scp in folder .ssh command for access : ssh [email protected] Here is a piece of -vvv(Verbose) log I can’t login without password Piece of sshd_config. I have tried to uncomment RSAAut and … Read more