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5 votes
1 answer
3k views

Does SSH support DSA with 2048 bit keys?

In FIPS 186-1 and 186-2 L could be any number between 512 and 1024 (inclusive) that was a multiple of 64. N was fixed at 160. FIPS 186-3 changed it so that L and N could be any combination of the ...
neubert's user avatar
  • 1,788
1 vote
1 answer
658 views

How do I sign a short text message with ~/.ssh/id_{dsa,ecdsa,ed25519}?

There are already a number of questions about reusing SSH keys for something else: Converting keys between openssl and openssh How to use public key in ~/.ssh for asymmetrical encryption with OpenSSL ...
Vi.'s user avatar
  • 219
3 votes
3 answers
3k views

Found DSA and RSA private keys hard-coded in a file during penetration testing. How to use them for SSH authentication?

We are performing a penetration test as part of a study where the hardware unit listens for connection over FTP, SSH, and Telnet. All of these are password-protected. The hardware unit must first be ...
whoami's user avatar
  • 1,366
95 votes
3 answers
71k views

Why OpenSSH deprecated DSA keys

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 ...
Petr's user avatar
  • 1,060