Complete centralized allocation symmetric key Description: As a communication between the parties A and B, respectively, and the KDC already has a session key Ka and Kb, but the A, B no secret passage between the advance, they need to rely on the KDC allocate temporary session key Ks. Upon completion of the session key Ks allocation, A Ks on the use of a specific file (test-1.txt) is encrypted and sent to B B use Ks decrypt the ciphertext, and compare the decrypted plaintext message with the original files are consistent. Requirements: (1) JAVA programming language, based on the DES symmetric cryptographic techniques to complete the encryption/decryption (JAVA library functions are supported) (2) the content of communications as a text file (test-1.txt) (3) complete network-based key distribution job (as the communication between the parties A, B should be deployed on both hosts, KDC can be deployed on one host or a third host) (4) are allocated once a secret symmetric key ra

DES
...\.classpath
...\.project
...\.settings
...\.........\org.eclipse.jdt.core.prefs
...\bin
...\...\TestDES.class
...\src
...\...\TestDES.java

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