Vigenère cipher :Vigenère cipher using a Keyword that is the same, so the encoding by creating a Caesar Cipher from the letters that appear in the Key allows the structure of the Cipher used to encrypt more complicated but if Keyword is used, it will be stolen to decode. To not know the Keyword, the Keyword can be gleaned from the letters that repeatedly tests in conjunction with considering the distance by Kasiski examination and called Friedman test (also known as Kappa Test?)Spotlight: security features• 256-bit AES encryption, advanced for all traffic.• Be able to use the Windows security system and Radmin.• Windows Security supports different permissions, the permissions for users and groups each user in a Domain, Trusted Domains, and Primary Active Directory supports authentication of users logging on to the system and verify Kerberos.• Radmin security criteria to be used to allow different permissions for the user that is added to the access list of the Radmin Radmin Server key exchange method of Diffie-Hellman, new size 2048-bit key, make a check user has confirmed the high security.• IP Filter helps to allow a license with Radmin Server only to IP addresses and networks.• DNS name and user name are stored in the log file operation.• Password protection for an intelligent guess.
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