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Integrated Dell Remote Access Controller 9 User's Guide

Supported SSH cryptography schemes

To communicate with iDRAC using SSH protocol, it supports multiple cryptography schemes listed in the following table.

Table 1. SSH cryptography schemes SSH cryptography schemes
Scheme Type Algorithms
Asymmetric Cryptography
Public key
  • curve25519-sha256
  • curve25519-sha256@libssh.org
  • ssh-rsa
  • ecdsa-sha2-nistp256
  • diffie-hellman-group16-sha512
  • diffie-hellman-group18-sha512
  • diffie-hellman-group14-sha256
Symmetric Cryptography
Key Exchange
  • rsa-sha2-512
  • rsa-sha2-256
  • ssh-rsa
  • ecdsa-sha2-nistp256
  • ssh-ed25519
  • ecdh-sha2-nistp256
  • ecdh-sha2-nistp384
  • ecdh-sha2-nistp521
  • diffie-hellman-group-exchange-sha256
Encryption
  • chacha20-poly1305@openssh.com
  • aes128-ctr
  • aes192-ctr
  • aes256-ctr
  • aes128-gcm@openssh.com
  • aes256-gcm@openssh.com
MAC
  • umac-64@openssh.com
  • umac-128-etm@openssh.com
  • hmac-sha2-256-etm@openssh.com
  • hmac-sha2-512-etm@openssh.com
  • umac-128@openssh.com
  • hmac-sha2-256
  • hmac-sha2-512
Compression None
NOTE:If you enable OpenSSH 7.0 or later, DSA public key support is disabled. To ensure better security for iDRAC, Dell recommends not enabling DSA public key support.

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