On Mon, 16 Jul 2007 21:12:04 +0200, Pieter de Boer said: > Ohwell, signing with public keys is pointless anyhow.. *whistles innocently* Signing it with the *recipient's* public key can be somewhat interesting, as it results in a signature that only the recipient can identify - if anybody else tries to verify it, they can't, which results in a mostly-repudiatable signature. Of course, the *usual* use case is to either: *encrypt* with the recipients public key (so only their private key can decrypt it), and then sign the whole thing with your private key (so they can verify you did it by using your public key). This results in something that anybody can verify you sent, but only the recipient can read. or... Sign with your private key, then encrypt with their public key - at that point only the recipient can decode it. In addition, only the recipient can see the (now-decoded) signature and verify it.
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