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Diffie-Hellman key exchange protocol
Člupek, Vlastimil ; Burda, Karel (referee) ; Sobotka, Jiří (advisor)
In this bachelor's thesis there is explained principle of cryptography, encryption methods and primarily cryptographic protocol key exchange Diffie-Hellman. There is described key exchange process via public channel. Problem of discrete logarithm. Attack "Man in the middle" on this protocol and protection against this attack. Subsequently there is described a newer version of this protocol, which work's with elliptic curves. Its name is Elliptic Curve Diffie-Hellman (ECDH). In this protocol there is hereinafter described a procedure of calculate a secret point on elliptic curve. Problem of Elliptic discrete logarithm. Attack "Man in the middle" on protocol ECDH and protection against this attack. Furthermore this thesis deals with analyzing mutual compatibility between protocol DH and ECDH and its possible solutions.
Diffie-Hellman key exchange protocol
Člupek, Vlastimil ; Burda, Karel (referee) ; Sobotka, Jiří (advisor)
In this bachelor's thesis there is explained principle of cryptography, encryption methods and primarily cryptographic protocol key exchange Diffie-Hellman. There is described key exchange process via public channel. Problem of discrete logarithm. Attack "Man in the middle" on this protocol and protection against this attack. Subsequently there is described a newer version of this protocol, which work's with elliptic curves. Its name is Elliptic Curve Diffie-Hellman (ECDH). In this protocol there is hereinafter described a procedure of calculate a secret point on elliptic curve. Problem of Elliptic discrete logarithm. Attack "Man in the middle" on protocol ECDH and protection against this attack. Furthermore this thesis deals with analyzing mutual compatibility between protocol DH and ECDH and its possible solutions.

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