There was a question RSA vs. DSA for SSH authentication keys asking which key is better. Basically all answers were more in a favour of RSA over DSA but didn't really tell that DSA would be somehow insecure. Now however DSA was deprecated by OpenSSH and is later going to be entirely dropped: https://www.gentoo.org/support/news-items/2015-08-13-openssh-weak-keys.html The information states: Startin