Dissertation > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > The application of computer network > E-mail ( E -mail )

Design of Secure E-mail System Based on Encryption

Author WangLei
Tutor DuZhuPing
School PLA Information Engineering University
Course Computer Science and Technology
Keywords Secure e-mail S / MIME Chaotic cryptographic algorithms Elliptic Curve Cryptography CA
CLC TP393.098
Type Master's thesis
Year 2008
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E-mail as a widely used Internet communication technology has been in the life of people occupy a lot of proportion . Current email universal security , however , difficult to be guaranteed , facing middleman humbly received , tampering, repudiation and many other security threats . The main work of this paper is to combine the S / MIME secure e-mail standard , the use of cryptography knowledge design set with confidentiality, integrity and non-repudiation of secure e-mail system . This article uses an improved the chaotic cipher algorithm to encrypt the message content ; elliptic curve cryptosystem design public key cryptographic algorithm , as a basis for digital envelopes and digital signature technology . The use of these cryptographic techniques to ensure the confidentiality, integrity and non-repudiation of e-mail . Article also designed according to the concrete realization of the needs of the system with a public key certification center , the certificate exchange and management ; combined with the S / MIME standard encapsulation process detailed analysis of the e-mail sent and received , the design of the mail proxy function module , and from the theory on the secure e-mail system security . The significance of this paper is that the use of S / MIME standard elliptic curve cryptographic algorithms and an improved the chaotic cipher algorithm introduced the e-mail system to provide users with a practical password-based security e-mail system .

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