[PATCH] Fix for some flaws when using a key with multiple subkeys

[Carl Michael Skog]

And of the rest of the patches also....

Den mån 4 nov. 2019 kl 17:06 skrev Carl Michael Skog <cmskog at gmail.com>:

> When encrypting with a gpg key that has multiple encryption subkeys ONLY
> the newest encryption subkey is used when encrypting.
> This leads to potential problems in pass when using such a key.
>
> Consider this scenario:
> Let's say we are using a key K with encryption subkey A.
> We set up two password stores(S1 and S2) plus a git repository(G) with
> this key.
> All fine so far.
> Let's say now that S1 adds a encryption subkey(B) to K.
> S2 is still unchanged.
> S1 then adds a new password P, and pushes this to G, which S2 then pulls.
> When S2 tries to read password P it will get an error message from gpg:
> "gpg: decryption failed: No secret key".
> Even more dangerous: if S1 after adding the key does a "pass init" with K,
> S2 will not be able to read a single password, if it pulls this change.
>
> Patch 1,2,3 is just some tests exposing the problem.
> The actual fix is in patch 4.
>
>
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