Читать книгу Cryptocurrency Mining For Dummies - Peter Kent - Страница 30

Say that I publish my public key on my website, in my emails, and on my business cards. Now, one day you get a message that seems to come from me. But how can you be sure it’s from me? Well, I encrypted the message using my private key. So, you take my public key (which is publicly available) and use it to decrypt the message. If the message really is from me, my public key will decrypt it, and you’ll be able to read it. If it isn’t, the decryption won’t work, because it came from someone else.

So, by encrypting the message with the private key, I have in effect signed the message, proving that it came from me. The recipient knows that the message was created by the person holding the private key that is associated with the public key that opened the message up and made it readable.