| 摘要 |
A method for exchanging a key based on a varied Diffie Hellman is provided to vary a Diffie Hellman key exchanging manner based on a discrete logarithm problem to adapt to coded and identified data. A method for exchanging a key based on a varied Diffie Hellman includes a step of performing a first communication device(10) to create a public key with a specific secret key and each variable. The public key is transmitted to a second communication device(20). The second communication device applies and calculates a predetermined specific secret key to the public key received from the first communication device, and transmits the public key of the second communication device to the first communication device. A shared key is calculated by applying and calculating the secret key of the first communication device to the public key of the second communication device.
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