The main purpose of cryptographic applications is to protect the confidentiality and security of the communicating party against third parties (attackers).
The main aims of cryptology are:
4) Not to deny
The information should not be understood by unwanted persons.
For a complete or single piece of data, a link is a guarantee that no changes have been made to the message as it was sent.
A transmission is a guarantee that the sender of a message is really the sender.
Not to deny
Your message can not be denied.
Classical Cryptology Methods
0x00 – Caesar Crypto Algorithm
0x01 – Affinity Crypto Algorithm
0x02 – Vigenere Crypto Algorithm
0x03 – RSA Crypto Algorithm
0x04 – ElGamal Crypto Algorithm
I would like to briefly discuss these algorithms with examples.
0x00 – Caesar Cipher Algorithm (Caesar Cipher) Briefly, it is a replacement algorithm.
As can be seen in the above, each letter is replaced by the next letter in the alphabet.