Content-certified e-mail service system

Details Content-certified e-mail service system Content-certified e-mail service system

2006-05-23

2006-05-23

Vu, Kim (Department: 2134)

Information security

Prevention of unauthorized use of data including prevention...

Access control

C713S175000

Reexamination Certificate

active

07051370

ABSTRACT:
A content-certified e-mail service system in which an e-mail terminal device at a sender's side sends a content certification request e-mail containing an e-mail address of an e-mail terminal device at a receiver's side and a text of content certification to an e-mail content certifying device; upon receipt of the content certification request e-mail, the e-mail content certifying device judges whether there is any tampering with the text of content certification in the e-mail, and upon judging that there is no tampering with the text of content certification, saves registration information containing the text of content certification in a storage device, and sends a content-certified e-mail containing the text of content certification to the e-mail terminal device at the receiver's side and a receipt e-mail containing receipt information indicating that the content certification has been effected to the e-mail terminal device at the sender's side.

REFERENCES:
patent: 5553145 (1996-09-01), Micali
patent: 5566230 (1996-10-01), Cairo
patent: 5809116 (1998-09-01), Cairo
patent: 5815555 (1998-09-01), Cairo
patent: 5956154 (1999-09-01), Cairo
patent: 5982506 (1999-11-01), Kara
patent: 6263436 (2001-07-01), Franklin et al.
patent: 6360254 (2002-03-01), Linden et al.
patent: 6618749 (2003-09-01), Saito et al.

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