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Gnus decrypt mail works with openssl but fails with epg
From: |
Klaus Zeitler |
Subject: |
Gnus decrypt mail works with openssl but fails with epg |
Date: |
Tue, 7 Jun 2016 13:33:41 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux) |
Hello,
I have an odd problem with encryption. I send myself a signed and
encrypted email with something like:
openssl smime -sign -in test.txt -signer CertAndKey.pem -text | openssl smime
-encrypt -from klaus.zeitler@alcatel-lucent.com -to
klaus.zeitler@alcatel-lucent.com -subject "Signed and Encrypted message"
CertAndKey.pem | sendmail klaus.zeitler@alcatel-lucent.com
I can decrypt/verify/read this mail with Gnus only when I use
(setq mml-smime-use 'openssl)
but not with
(setq mml-smime-use 'epg)
There I see in the EPG debug buffer:
--- snip ---
GPG_AGENT_INFO=/tmp/gpg-0A12Kv/S.gpg-agent:5003:1
/usr/bin/gpgsm --no-tty --status-fd 1 --yes --output /tmp/epg-output1248i8M
--decrypt -- /tmp/epg-input1248VyG
[GNUPG:] ERROR decrypt.algorithm 50331732 1.2.840.113549.3.2
[GNUPG:] DECRYPTION_FAILED
--- snip ---
BTW I can also read this email with Thunderbird.
When I send myself a signed+encrypted email from Thunderbird, I see in
the EPG debug buffer:
--- snip ---
GPG_AGENT_INFO=/tmp/gpg-0A12Kv/S.gpg-agent:5003:1
/usr/bin/gpgsm --no-tty --status-fd 1 --yes --output /tmp/epg-output1248JUr
--decrypt -- /tmp/epg-input12488Jl
[GNUPG:] ENC_TO FFFFFFFFE1EA1359 0 0
[GNUPG:] DECRYPTION_OKAY
--- snip ---
So it seems as if there's something wrong with my settings for EPG,
but I have no idea what. I only have these 4 lines in my init file
for EPG usage:
(require 'epa-file)
(epa-file-enable)
(setq epg-debug t)
(setq mml-smime-use 'epg)
Maybe the error above:
[GNUPG:] ERROR decrypt.algorithm 50331732 1.2.840.113549.3.2
gives a hint to what's wrong in my setup.
Klaus
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