![]() ![]() PKCS8Īnd to be complete, here's the PKCS8 format of the key above: ssh-keygen -ef /home/user/.ssh/id_rsa -mPKCS8 ![]() Then remove newlines and prepend it with ssh-rsa. END SSH2 PUBLIC KEY that the fingerprint line is actually the same, so you can manually convert between the multi-line format output by PuTTY and the one-line format just by removing the BEGIN, Comment, and END lines. O3ULhLSqcv9zENGkGB0bfXkvhI0p/tP4b1a0NnvmNME9i6qyo8/7mPLovaKwP1qkd7/a+pġDQr2XoId9U6G4rx0TKsvhbjmDvaCWAm4c5LT3WbQHh301DWiwsN8xn8LkxaO4GtdIqxHO SpBoOPgdv1rljgb9PFAQX19X+rofYi+aYd1glP8BhRC3rt4zE26J54h8tt46DBT1TkFPJ2 Ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCzU4exWqu4tsgWIJleq1AJ98cGHswD80cphWYOasspBoOPgdv1rljgb9PFAQX19X+rofYi+aYd1glP8BhRC3rt4zE26J54h8tt46DBT1TkFPJ2O3ULhLSqcv9zENGkGB0bfXkvhI0p/tP4b1a0NnvmNME9i6qyo8/7mPLovaKwP1qkd7/a+p1DQr2XoId9U6G4rx0TKsvhbjmDvaCWAm4c5LT3WbQHh301DWiwsN8xn8LkxaO4GtdIqxHOyj7lmQZGw8ixuvoIY/FjgXhSPGmaWLyz2o45TrTNP7vWxWqgcDi2CegziD67+UN4tBZvB9HwR6V3aaCrV59H15ukAtK1 can get that in the PuTTY RFC4716 format as follows: ssh-keygen -ef /home/user/.ssh/id_rsa -mRFC4716Ĭomment: "2048-bit RSA, converted by from OpenSSH"ĪAAAB3NzaC1yc2EAAAADAQABAAABAQCzU4exWqu4tsgWIJleq1AJ98cGHswD80cphWYOas ![]() SHA256:lrwmOoBF1PEtDbbVkFwREgWqdJlH5ViEYzQpUAyPyNY key's randomart image is: Your public key has been saved in /home/user/.ssh/id_rsa.pub. ![]() Your identification has been saved in /home/user/.ssh/id_rsa. Example Keyįor example, I'll generate a new key in Debian 10: ssh-keygenĮnter file in which to save the key (/home/user/.ssh/id_rsa):Įnter passphrase (empty for no passphrase): The default used by ssh-keygen and PuTTY is actually the same (RFC4716), except that the id_rsa.pub file puts it on one line, which is what the authorized_keys file expects. Setting a format of “PEM” when generating or updatingĪ supported private key type will cause the key to be stored in The supported key formats are: “RFC4716” (RFCĤ716/SSH2 public or private key), “PKCS8” (PEM PKCS8 public key) Specify a key format for the -i (import) or -e (export) conver‐ The default format that putty uses is defined in RFC4716.įrom man ssh-keygen, ssh-keygen supports 3x formats: If you look close, I just removed a few lines, removed the newlines, and prepended it with ssh-rsa Explanation There's no magical command to convert here. The one-line format (eg as expected by authorized_keys) is: ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAQEAs+UjC01Fk8xs8vpLW1RIipwxG1zXTaCkIdeJK3SyhMVl78/QwErTYuIop3wVmVAuTKhw4uYCMaRZC圓6FdSGQ9FwDCP+lT36M2XvZtraweH+1IPHzRf2ENNdEfs286zllu96WGtqLYwObXQbHMm3dPDDbH3apynrS/FJHisCayFXFN84aBfh9HFHrM++BXqpxTX5nq50QoRwSjMY6qMuLwjJKKQslcb5hlRVSjCmUZKv9/fH+i0BI7UHJ01XHNp1sisL5biWkakXD9BxXjv/ggyeLsOTtdtrF0DK7wYQXyNmpRqHYOBdrZlskHf/R1CtWoBi5IIeARWZVDduXf1Pww= HisCayFXFN84aBfh9HFHrM++BXqpxTX5nq50QoRwSjMY6qMuLwjJKKQslcb5hlRV ZtraweH+1IPHzRf2ENNdEfs286zllu96WGtqLYwObXQbHMm3dPDDbH3apynrS/FJ K3SyhMVl78/QwErTYuIop3wVmVAuTKhw4uYCMaRZC圓6FdSGQ9FwDCP+lT36M2Xv For the example key you provided (output by PuTTY): - BEGIN SSH2 PUBLIC KEY -ĪAAAB3NzaC1yc2EAAAABJQAAAQEAs+UjC01Fk8xs8vpLW1RIipwxG1zXTaCkIdeJ ![]()
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