Diffie-Hellman systems for both the recipient and the sender will use the same key that was agreed before a system of encryption, one of the oldest still in use today.Diffie-Hellman key exchange (D-H) is a specific method of securely exchanges encryption keys through public channels, and a specific example is the first public-key encryption is an original concept by Ralph Merkle. D-H is one of the oldest operating example of public key exchange is carried out within the territory of the Diffie-Hellman encryption. The method of key exchange provides both parties with no prior knowledge of each other. To create a shared secret key over an insecure communications channel. This key can then be used to encrypt subsequent communications using a symmetric key encryption. Diffie-Hellman shared secret defined that can be used for secret communications, while exchanging information through the public network. To maintain the stability of the computer system or computer network, is something that should be realized as strongly today. Because the world today is the world of information. To keep your information secure is important to the individual and the organization. Therefore, to allow the individual access to the information is something that should be very cautious. Because some of the people and organizations is important and may not be disclosed to third parties. To prove identity is important because if that particular person is logged on. It must be accepted that the actual permissions. To check the evidence, it is the first step before allowing access to the system. To confirm the identity, the more complexity that it means that the security of information, it is much more.
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