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seen Nov 18 at 11:52

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awarded  Editor
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revised How can I encrypt a file using gpg without including the recipient's key ID?
Clarified question
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awarded  Commentator
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awarded  Critic
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comment How can I encrypt a file using gpg without including the recipient's key ID?
How would the recipient distribute the public key to to the sender without making it known to the attacker? Public keys are meant to be publicly distributed.
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awarded  Self-Learner
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answered Are there DRM techniques to effectively prevent pirating?
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awarded  Student
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comment Lessons learned and misconceptions regarding encryption and cryptology
PGP does not use the same key pair for signing and encryption. Rather, a PGP private key is composed of a main key, used for signing, and one or more subkeys, used for encryption. The subkeys are hidden from the user, hence the confusion, but you can view them using gpg --list-secret-keys.
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asked How can I encrypt a file using gpg without including the recipient's key ID?
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awarded  Teacher
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comment Can all the (other) recepients of a PGP encrypted message be identified?
See also: security.stackexchange.com/q/25170/15712
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asked What information is leaked from an OpenPGP encrypted file?
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answered What information is leaked from an OpenPGP encrypted file?
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