If earlier it was accepted that SSL is needed only for e-commerce sites, today absolutely everyone needs this certificate. SSL (Secure Sockets Layer) is a protocol used to secure and encrypt communication between computers. Every professional and person who wants to build a trusting relationship with a client should consider purchasing an SSL certificate. Everyone wants to feel safe no matter where they are, whether they are at home or on the Internet. The SSL certificate contains the following information:
– domain name for which the SSL certificate is issued;
– information about the legal entity;
– location of certificate holders (city, country);
– certificate validity period;
– information about the provider of the SSL certificate.
An SSL certificate confirms that the domain belongs to a real company and that its owner is legally entitled to use the secret key. Finding out the availability of an SSL certificate on the site is quite simple. On sites without a certificate, “http: //” is displayed, and sites with a certificate “https: //.”
F unc SSL:
Authentication and verification: SSL certificate contains information about the authenticity of data related directly to the personal data of a person, company or website, which this certificate will display to site visitors after clicking on the lock symbol or “trust mark”.
Data encryption: One of the functions of an SSL certificate is also data encryption. We are all familiar with encryption. Data encryption tells us that confidential information that we exchange through the site cannot be intercepted by third parties or read by anyone other than the recipient.
How it works?
Any encryption method is based on a key. The key allows the system to encrypt or decrypt the message. Two keys are involved in the operation of an SSL certificate: public and private.
The public key encrypts the message. The browser uses it when it needs to send user data to the server. For example, after entering your credit card information and clicking “pay”. This key is visible to everyone; the browser attaches it to the message.
The private key decrypts the message. It is used by the server when it receives a message from the browser. This key is stored on the server and is never sent along with the message.
Public and private keys are generated once when creating a certificate request. Encryption with two different keys is called asymmetric. Using this method is safer but slower. Therefore, the browser and the server use it once: to create a key for one session.
Types of certificates
DV (Domain Validation) – check only the domain name. It reliably protects the HTTPS connection and verifies the rights to the claimed domain. It is a great choice for the entry-level, suitable for both individuals and businesses.
OV (Organization Validation) is a domain and organization validation. In addition to verifying the authenticity of a domain name, it indicates the identity of the organization that owns it. Issued only to legal entities.
EV (Extended Validation) – extended validation of the organization. The most reliable and prestigious certificate, which confirms not only the domain rights of the organization, but also the legality of its activities, as well as its actual existence. The Authorization Center conducts a thorough check of the legal entity in accordance with certain criteria, after which the address bar with the company name will be highlighted in green.
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