gpg decrypt asks for Passphrase

[Krishna Seetharaman]

Hi All,

I have used gpg library for python and want to decrypt the pgp files.  However when I execute the below command:
gpg --batch --passphrase <passphrase> -o outfile -d <pgp file>, it is showing up the popup.  Is there any reason why because I am using --batch option. 

Moreover, I tried using gpg.decrypt_file as:

status = gpg.decrypt_file(stream, always_trust=True , passphrase=config['gpg_passphrase'], output=outfile)

This also opens the popup for asking for passphrase.  I am using script based application where automated decryption is required without user input.  Please let me know why this error is occurring and what is the solution?

Please enter the passphrase to unlock the OpenPGP Secret key.

Let me know the solution for this and if you need more information.

Regards,
Krishna

[Vinay Sajip]

Dear Krishna,

This may happen unavoidably if you use GnuPG 2.1. What version, OS etc. are you using?

Regards,

Vinay Sajip

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From: Krishna Seetharaman <skris...@gmail.com>
To: python-gnupg <python...@googlegroups.com>
Cc: prabod...@aspiresys.com
Sent: Thursday, 10 November 2016, 0:05
Subject: [python-gnupg] gpg decrypt asks for Passphrase

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[Vinay Sajip]

There is work in progress to provide better support for GPG 2.1. When that's committed, you'll also need to add a gpg-agent.conf in the relevant GnuPG home directory containing the line "allow-loopback-pinentry" (without the quotes).

See vinay.sajip / python-gnupg / issues / #32 - add GPG 2.1 compability for more information.

Regards,

Vinay Sajip

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From: Krishna Seetharaman <krishna.s...@aspiresys.com>
To: "python...@googlegroups.com" <python...@googlegroups.com>; Vinay Sajip <vinay...@yahoo.co.uk>
Cc: Prabodh Panda <prabod...@aspiresys.com>; "skris...@gmail.com" <skris...@gmail.com>
Sent: Thursday, 10 November 2016, 14:25
Subject: Re: [python-gnupg] gpg decrypt asks for Passphrase

Sorry GPG version is latest: 2.1.15

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From: Krishna Seetharaman <krishna.s...@aspiresys.com>
Sent: Thursday, November 10, 2016 7:43:01 PM
To: python...@googlegroups.com; Vinay Sajip
Cc: Prabodh Panda; skris...@gmail.com
Subject: Re: [python-gnupg] gpg decrypt asks for Passphrase

 

Use windows server 2008 R2

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From: Vinay Sajip <vinay...@yahoo.co.uk>
Sent: Thursday, November 10, 2016 2:47:23 PM
To: python...@googlegroups.com
Cc: Prabodh Panda; skris...@gmail.com
Subject: Re: [python-gnupg] gpg decrypt asks for Passphrase

 

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[Vinay Sajip]

Dear Krishna,

Please see latest version of code in the repository - the code, test suite and documentation have been updated and tests pass successfully without popups with 2.1.15 on Linux (not yet tested on Windows).

Regards,

Vinay Sajip

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From: Krishna Seetharaman <krishna.s...@aspiresys.com>

To: Vinay Sajip <vinay...@yahoo.co.uk>; "python...@googlegroups.com" <python...@googlegroups.com>
Cc: Prabodh Panda <prabod...@aspiresys.com>
Sent: Friday, 11 November 2016, 23:43
Subject: RE: [python-gnupg] gpg decrypt asks for Passphrase

Hi Vinay,

 

As of now, does it mean that we cannot avoid popup when decrypting the .pgp file when using the GPG 2.1.15 version?  How to call GPG2 libraries?  I tried installing gpg4win and used gpg2 command line. In this way gpg2 --batch --passphrase option prevented the popup to be shown and decrypted the file without prompt.  Is this correct way?  Is it possible to invoke gpg2 libraries using python API calls in the python code?

 

Thanks and Regards,

Krishna