jerome at jeromebaum.com
Mon Mar 21 18:06:07 CET 2011
"dan at geer.org" <dan at geer.org> writes:
> Ah. Spam as a covert channel. Tell me that this isn't already done?
You make a point, I should have been clearer. Randomly send messages
that can't be decrypted to random recipients _from a list of recipients
that have agreed to this_ to obscure matters.
It would be a lot of work to try decrypting with each key but the
recipient could have a designated "trial" key with no pass-phrase that
is used to decrypt some kind of outer layer. The adversary would still
need to steal that key only to verify that _with high probability_, the
message was intended for this specific recipient.
PGP: A0E4 B2D4 94E6 20EE 85BA E45B 63E4 2BD8 C58C 753A
PGP: 2C23 EBFF DF1A 840D 2351 F5F5 F25B A03F 2152 36DA
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