ltr120 / encrypted-chatter

CSC 566 hw2 Students: Youhao Wei & Yi Huang

Core Files:

DES.java:

contains a main method, and the core methods for DES encryption.

RSA.java:

contains a main method, and the core methods for RSA encryption.

Block.java:

Abstract class for Key.java and DataBlock.java. These classes are used
for simulating blocks. a block is either key block or data block depends
on the content of the block. Compared with key block has some extra methods, such as random a key value, check if the key is a weak key. These
files are shared by RSA and DES. The data of each block is stored as a BigInteger. There is also a attribute indicates the size of the block.

CHAT.java:

contains the main method, Alice.java and Bob.java contains methods for
Alice and Bob.

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Note:

RSA key file that generated and used for encryption and decryption are of this format:

n'\n'e or n'\n'd

first line is n in hex, and second line is e/d in hex. Other format might not work with the encryption and decryption.