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Allow late passing of passphrase via --passphrase-fd
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the passphrase that is read from the --passphrase-fd is read at program startup, way before gnupg can decide which key to use (and hence, which passphrase). Is it possible to read the passphrase from the passphrase-fd later on?


No,,this is not possible for various reasons. Either use gpg-agent or make used of the --status-fd/--command-fd feature to pass the passphrase when requested.

Also consider using gpgme which makes using gpg from other programs much easier.

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