Re: rough sketch of a potential solution
Thomas Roessler <[email protected]> Tue, 18 Nov 2003 12:53:53 +0100
| Newsgroups | gmane.ietf.imaa |
|---|---|
| Message-ID | <[email protected]> |
On 2003-11-18 06:56:08 +0000, Adam M. Costello wrote: > But I'm also skeptical of this roundabout way of presenting signatures: > address1 signs the message, and signs a note saying "address2 is an > alternate for address1", and the MUA then concludes that it's safe > to tell the user that the message is signed by address2. The proposed logic here seems to boil down to something like this: (Mallory signs message) && (Mallory signs "I'm Alice") => Alice has signed message. This is flawed -- anyone could send signed messages on anyone else's behalf with this scheme. -- Thomas Roessler <[email protected]>