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C++ Encrypting a File's Data (You may only use the headers #include #include and #include ) 4) Required function: void encrypt_file(const std::string& filename, const std:string&
C++ Encrypting a File's Data (You may only use the headers #include
4) Required function: void encrypt_file(const std::string& filename, const std:string& password) You realized that someone else might see through your idea to "unzip" a file and determine it is not secure enough to transmit these files, so you thought encryption might be a better way to secure your pictures. To do some basic encryption, you have decided to take a password as an encryption key and then repeatedly XOR the file data with the password and write out this data as a new file. To accomplish this, we have to understand first how XOR works. The bitwise operation in C++ is computed using the A operator works on all primitive types. The XOR operation behaves as follows: Table 1: Truth table for XOR (source: http://www.cplusplus.com/doc/boolean/) aba b 011 00 1 !) A "bitwise" operator takes two variables and evaluates a logical operator on respective bits of the variables. Consider the following code
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