[[!comment format=mdwn
 username="http://joeyh.name/"
 nickname="joey"
 subject="comment 1"
 date="2013-05-06T17:09:58Z"
 content="""
What version of gnupg do you have installed?

<pre>
gpg: block_filter 0x946320: read error (size=12864,a->size=12864)
gpg: [don't know]: invalid packet (ctb=68)
gpg: [don't know]: invalid packet (ctb=21)
gpg: mdc_packet with invalid encoding
gpg: decryption failed: invalid packet
gpg: [don't know]: invalid packet (ctb=00)
gpg: block_filter: pending bytes!
</pre>

I don't see how git-annex can possibly guard against gpg behaving this way when given bad data. So the best thing to do would be to get a test case file that causes gpg to behave this way, and then I could file a bug on gpg and get it fixed to immediately exit.

I tried to reproduce this by encrypting a 1 mb file with gpg. This yeilded a 1.1 mb file. I then truncated it back to 1 mb, and tried to decrypt it.

[[!format sh \"\"\"
joey@gnu:~>gpg --decrypt me2.gpg > x
gpg: encrypted with 1 passphrase
gpg: block_filter 0x9d6fda0: read error (size=15680,a->size=15680)
gpg: Problem reading source (8570 bytes remaining)
gpg: handle plaintext failed: file read error
gpg: mdc_packet with invalid encoding
gpg: decryption failed: invalid packet
gpg: block_filter: pending bytes!
zsh: exit 2     gpg --decrypt 
\"\"\"]]

gpg exited immediately on error, which is what it should do. So it doesn't seem likely I can guess at a test case file that causes gpg to behave this way. You will need to provide one for me to help.
"""]]