cryptography

Cryptography is the science of researching and realizing procedures for encrypting or decryptingdata, in which either the encryption procedure or, if uniform encryption procedures are used, the key terms used are kept secret.

By changing, exchanging or adding characters according to certain rules, a plaintext is transformed into a ciphertext and vice versa. Encryption methods are applicable to data storage and data transmission.

In addition to ensuring confidentiality by encrypting plaintext, cryptography methods can also be used to ensure the authenticity of a message and the data integrity of a file. The integrity of a file ensures that it is received in unchanged form.