[Pkg-mozext-maintainers] Bug#775933: enigmail: calls 'gpg --list-keys' before encrypting. This is slow, esp. with gpg2

[Andrew Gallagher]

Package: enigmail
Version: 2:1.7.2-3
Severity: normal

Dear Maintainer,

Enigmail appears to call 'gpg --list-keys' when trying to work out if it
should encrypt an email, even if that mail has only one recipient. This means 
slurping up every single key ID into memory, required or not. It also causes 
gpg to walk its entire database, which is ridiculously inefficient - with a 
large keyring and gpg2 this can take several minutes, during which time gpg 
hogs 99% of CPU. (gpg1 is faster, but there is still a noticeable delay)

Is this all really necessary? It would be hundreds of times faster to call 
'gpg --list-keys $email' for each recipient in turn. 

Andrew.

-- System Information:
Debian Release: 8.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_IE.utf8, LC_CTYPE=en_IE.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages enigmail depends on:
ii  gnupg    1.4.18-6
ii  icedove  31.3.0-1
ii  libc6    2.19-13

Versions of packages enigmail recommends:
ii  gnupg-agent  2.0.26-4

enigmail suggests no packages.

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