Function main

ciphers/rsa_cipher.py:7–37

()

BYTE_SIZE = 256

def main():
    filename = 'encrypted_file.txt'
    response = input(r'Encrypte\Decrypt [e\d]: ')

    if response.lower().startswith('e'):
        mode = 'encrypt'
    elif response.lower().startswith('d'):
        mode = 'decrypt'

    if mode == 'encrypt':
        if not os.path.exists('rsa_pubkey.txt'):
            rkg.makeKeyFiles('rsa', 1024)
            
        message = input('\nEnter message: ')
        pubKeyFilename = 'rsa_pubkey.txt'
        print('Encrypting and writing to %s...' % (filename))
        encryptedText = encryptAndWriteToFile(filename, pubKeyFilename, message)

        print('\nEncrypted text:')
        print(encryptedText)

    elif mode == 'decrypt':
        privKeyFilename = 'rsa_privkey.txt'
        print('Reading from %s and decrypting...' % (filename))
        decryptedText = readFromFileAndDecrypt(filename, privKeyFilename)
        print('writing decryption to rsa_decryption.txt...')
        with open('rsa_decryption.txt', 'w') as dec:
            dec.write(decryptedText)

        print('\nDecryption:')
        print(decryptedText)


def getBlocksFromText(message, blockSize=DEFAULT_BLOCK_SIZE):