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There are means of key protection beyond passphrases. ssh-agent can transparently handle those.

ﾤﾡ
– ﾤﾡ

2023-08-08 21:19:07 +00:00
Commented Aug 8, 2023 at 21:19
1

@ﾤﾡ perhaps, but I wasn't aware of them in 2013.

jordanm
– jordanm

2023-08-08 21:39:23 +00:00
Commented Aug 8, 2023 at 21:39
Could you please mention some of those methods? @ﾤﾡ

r0berts
– r0berts

2023-11-20 18:26:13 +00:00
Commented Nov 20, 2023 at 18:26
1

@r0berts Keys can be sealed using TPM. There are several libraries/tools for that. For Linux see Protecting SSH keys with TPM 2.0. For Windows check nCryptAgent or A Better Windows 10+WSL SSH Experience. For low-level details on TPM see the answers on TPM 2.0 PKCS#11 on Windows and Linux.

ﾤﾡ
– ﾤﾡ

2023-11-21 08:22:49 +00:00
Commented Nov 21, 2023 at 8:22
1

@r0berts Another direction which opens more options as concerns key protection is to use SSH certificates. See If you’re not using SSH certificates you’re doing SSH wrong and tools like PuTTY CAC.

ﾤﾡ
– ﾤﾡ

2023-11-21 08:26:24 +00:00
Commented Nov 21, 2023 at 8:26

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