COMPARISON OF RSA AND ROT13 METHODS FOR TEXT FILE CONFIDENTIALITY

Abstract

The word cryptography comes from the Greek:
krupto (hidden or secret) and grafh (writing),
meaning "secret writing". In the past,
cryptography could be interpreted as the science
and art of maintaining the security of data or
messages by encoding them in a form whose
meaning could no longer be understood. In its
development, cryptography is not only meant to
encrypt data or messages, but also to maintain the
security of data or messages. The research carried
out by researchers is a type of research and
development (R&D). The R&D research method is
a research method used to produce certain
products and test the effectiveness of these
products. R&D is a process or steps to develop a
new product or improve an existing product,
which can be accounted for. At this stage,
encryption and decryption testing of each
algorithm will be carried out on text data with a
number of characters varying between 10 to 100
characters and the output What will be displayed
is the encryption result in the form of a ciphertext
file and the running time. The implementation of
the RSA cryptographic algorithm was successful
and the resulting system runs according to the
algorithm used and the encrypted plaintext can be
returned to its original form.