How does mutt know which key to use to encrypt to the sender?

To: Mutt Users <mutt-users@xxxxxxxx>
Subject: How does mutt know which key to use to encrypt to the sender?
From: Charles Curley <charlescurley@xxxxxxxxxxxxxxxxx>
Date: Thu, 1 Apr 2004 14:29:46 -0700
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Let me ask a related question: How does mutt know which key to use to
encrypt (not sign) to the sender?

I can figure out how it knows which key to use for the recipient. It
either uses the email address, or prompts the user. But I don't see
any mechanism for selecting the key to associate with the From:
address, other than pgp-hook, which I am not using for this.

-- 

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Key fingerprint = CE5C 6645 A45A 64E4 94C0  809C FFF6 4C48 4ECD DFDB

Attachment: pgpfvZvweXwjA.pgp
Description: PGP signature

Follow-Ups:
- Re: How does mutt know which key to use to encrypt to the sender?
  - From: Christoph Berg
- Re: How does mutt know which key to use to encrypt to the sender?
  - From: Thorsten Haude
- Re: How does mutt know which key to use to encrypt to the sender?
  - From: René Clerc
- Re: How does mutt know which key to use to encrypt to the sender?
  - From: Todd

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