"Researchers Extract RSA Keys from SSH Server Signing Errors"
"Researchers Extract RSA Keys from SSH Server Signing Errors"
A team of researchers demonstrated that under certain conditions, passive network attackers can recover secret RSA keys from naturally occurring errors resulting in failed SSH connection attempts. SSH is a cryptographic network protocol for secure communication used in remote system access, file transfers, and system administration tasks. RSA is a public-key cryptosystem used in SSH for user authentication, and it involves a private, secret key to decrypt communication encrypted with a public, shareable key.