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Automatically show authentication UI if signing fails #12

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daguej opened this issue Sep 15, 2020 · 1 comment · May be fixed by #14
Open

Automatically show authentication UI if signing fails #12

daguej opened this issue Sep 15, 2020 · 1 comment · May be fixed by #14

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@daguej
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daguej commented Sep 15, 2020

It would be nice if tergent could trigger biometric authentication if signing fails, then retry sigining.

I've already done alias ssh='termux-fingerprint 1>/dev/null; ssh', but:

  • You have to reauthenticate every time, regardless of the validity timeout
  • ssh invoked from outside the shell won't authenticate

Should be as simple as extending the bridge to support api_method Fingerprint and call it if signing fails.
@danog danog linked a pull request Sep 30, 2020 that will close this issue
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@daguej
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daguej commented Feb 2, 2023

As a slight tweak to my workaround, I've modified ~/.ssh/config to include:

Match exec termux-fingerprint
    PKCS11Provider /data/data/com.termux/files/usr/lib/libtergent.so

This causes ssh to invoke the fingerprint UI without relying on a shell alias. This is slightly nicer, although you still have to reauthenticate every time.

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Automatically unlock keystore using fingerprint, if possible danog/tergent
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@daguej