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Computers & security
S/MIME (Secure/Multipurpose Internet Mail Extensions) is a well-known standard for secure e-mail exchange. S/MIME builds its identity management on e-mail addresses, rather than real names. This fact may sometimes cause sending a signed e-mail with a bogus name on it. Moreover, header information of a signed e-mail message, such as subject and name, can be altered without affecting the verifiability of the signature. This paper spots the details of such problems of S/MIME and discusses somedoi:10.1016/j.cose.2008.09.003 fatcat:36yqx7qwzvbqxgc3ej4jcwhv74