Why if i change some characters of a Public key on authorizedKeys the login still works

Question

But in this case (on Windows) after editing the authorized_keys file and changing some characters in a public key the login still works ?

Is the same reason of [1] ?
Some characters in the public key are irrelevant ?

In this case the correct key is:
ssh-rsa AAAAB3NzaC1....
IF i change it to (replace C1 with C9):
ssh-rsa AAAAB3NzaC9...

The login works, if i change AAAA then it does not work any more.

It'll be essentially the same answer. Not all of the encoded information is needed for the login to work. They have purposes, but not for every use. — SAI Peregrinus, Mar 05 '21 at 22:17
Similar to this Can an altered RSA private key still work as the original? — kelalaka, Mar 05 '21 at 22:45
Much closer to (cross) https://serverfault.com/questions/526399/why-do-my-two-ssh-public-keys-have-the-same-beginning/526404 . The 5th through 11th bytes in the binary blob, corresponding to part of 6th, all of 7th through 14th, and part of 15th characters in the base64, are a redundant copy of the format (previously algorithm) name and are ignored. And not really about cryptography at all. — dave_thompson_085, Mar 06 '21 at 06:51

0 Answers0