mhmd-msaleh/RSA_Encryption

RSA_Encryption

I. Initial Step (Prepare the program):

1. Open a shell terminal and navigate to RSA_Encryption directory.
2. Compile the java classes, use the following command:

javac RSA.java EncryptionDriver.java DecryptionDriver.java 

II. For Encryption:

1. Please use the file named file.txt (if not found, make one) located in "files" directory and include the following: - The first line must contains the public keys e and n respectively, seperated be aspace. - The second line onward contains the text to by encrypted, you may use a newline, space, and any of the these characters. ('.', '?', '!', ',', ';', ':', '-', '(', ')', '{', '}', '[', ']', single quotes, double quotes)
2. Run EncryptionDriver, to do that use the following command.

java EncryptionDriver

3. The encrypted text will be in files/file.rsa file.

III. For Decryption:

1. Use the file named file.rsa (if not found, make one) located in "files" directory, and include the following:
   • The encrypted text (without white spaces) consisting of only numbers.
2. Run DecryptionDriver, to do that use the follwing command:

java DecryptionDriver

3. To decrypt the sample file.txt provided use d = 2832537816223, n = 99808491759239.
4. The decrypted file will be in files/file.dec file.

Please note: In order for the program to run successfully, it is important to include the required text file to be encrypted in "files" directory, and it must be named as "file.txt".