TechTinkererr

Cryptography is the practice of securing communication and data by converting it into a form that is unintelligible to unauthorized individuals. It involves techniques such as encryption, which transforms plaintext into ciphertext, and decryption, which converts ciphertext back into plaintext. Cryptography plays a crucial role in ensuring the confidentiality, integrity, and authenticity of information in various fields, including computer security, finance, and communication.

Let's break down the process step by step:  1. Key Pair Generation:- You generate a pair of cryptographic keys: a public key and a private key. - The private key remains on your machine and is kept secret. - The public key is used to encrypt messages that only you can decrypt with your private key.  2. Certificate Request (CSR) to CA:- You create a Certificate Signing Request (CSR) containing your public key and some information about yourself (like your name and domain). - You send this CSR to a Certificate Authority (CA) to request a digital certificate.  3. CA Verification and Digital Certificate Issuance:- The CA receives your CSR and verifies your identity (ensuring you own the domain or email address you're requesting a certificate for). - If everything checks out, the CA creates a digital certificate for you. - This digital certificate contains your public key, your identity information, and a digital signature created using the CA's private key....

Public Key Infrastructure (PKI) is a system that helps secure communication and transactions over the Internet. In simpler terms, it is like having a set of digital locks and keys to protect sensitive information.   In PKI, there are two types of keys: a public key and a private key. The public key is freely shared with others, while the private key is kept secret.     When someone wants to send an encrypted message or verify the identity of another person, they use the recipient's public key. The sender encrypts the message using the recipient's public key, and only the recipient, who possesses the corresponding private key, can decrypt and read the message.    PKI also enables digital signatures, which help verify the authenticity and integrity of digital documents. A digital signature is created using the sender's private key, and anyone with the sender's public key can verify that the document hasn't been tampered with and originated from the sende...