Cryptography is a technology used to store and secure information.

In practical terms, encrypting a user’s data ensures its authenticity and protection.
This process works like a digital safe, accessible only to the user.

Here are some key features of cryptography:

• Confidentiality: Data can only be read by authorised recipients (e.g., AES, RSA encryption).

• Authenticity: Ensures that the information truly comes from the declared source, using digital signatures.

• Integrity: Prevents any alteration of data during transfer or storage through hash functions (such as SHA-256).

• Security: Cryptography enhances security by linking each data block securely to the previous one, forming a continuous chain, this is the principle behind blockchain technology.