[Cyberduck-trac] [Cyberduck] #8554: Support chacha20-poly1305 at openssh.com cipher

[Cyberduck]

#8554: Support chacha20-poly1305 at openssh.com cipher
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    Reporter:  lbort   |      Owner:  dkocher
        Type:  defect  |     Status:  new
    Priority:  normal  |  Milestone:
   Component:  sftp    |    Version:  4.6.4
    Severity:  normal  |   Keywords:  ssh, ciphers
Architecture:  Intel   |   Platform:
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 This is in the line of tickets #8488, #8528 and #8537, but not as urgent
 as the key exchange algorithms.

 Apparently the ciphers aes256-ctr, aes192-ctr and aes128-ctr which are
 left after #8537 are still secure if Encrypt-then-MAC is used, but they do
 not offer authenticated encryption. Chacha20-poly1305 fixes this.

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Ticket URL: <https://trac.cyberduck.io/ticket/8554>
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