Imagine that you have a safe with a slot for receiving cards.

La public key It's like your address: anyone can use it to send you things.

But to open the box and access what they sent you, you need a private key, which is like a secret key. No one else should know that key.

If you lose it, you can't open the box. This is how many technologies such as cryptocurrencies or encrypted messages work.

Public and private keys are a pair of interrelated cryptographic elements that operate on the principle of asymmetric cryptography, a fundamental pillar in the security architecture of blockchain, cryptocurrency, digital identity and multiple Web3 systems.

The Key Private It is a secret fact known only to the owner, which allows sign transactions, access wallets and demonstrate ownership of digital assets or encrypted data.

The Key Public, derived mathematically from the private one using unidirectional cryptographic functions, acts as an identifier open to the public: it is the address to which others can send assets, validate signatures or interact.

This model allows authentication without intermediaries, eliminating the need to trust third parties to verify identity or ownership.

The system is secure as long as the private key remains protected, since its loss or leak can have irreversible consequences. In addition, this key pair is integrated into protocols such as SSL/TLS, public key infrastructure (PKI) and in the validation of smart contracts on blockchains such as Ethereum or Bitcoin.

The mathematical robustness of this scheme has made it a global standard for ensuring privacy, integrity and traceability in decentralized digital environments.