Cryptography is the practice of using codes and ciphers to protect information from unauthorized access. It is an important part of computer security and is used to protect data from being read or modified without permission. For example, when you make a purchase online, the information you enter is encrypted so that it can only be viewed by the store. This ensures that your personal information is kept safe.
1. Domain Validated SSL Certificate (DV SSL): This type of SSL certificate is the most basic and the most commonly used. It verifies the domain name of the website, but does not verify any other information. For example, RapidSSL.
2. Organization Validated SSL Certificate (OV SSL): This type of SSL certificate provides more assurance than a domain validated SSL certificate because it verifies the identity of the organization that owns the website. For example, GeoTrust True BusinessID.
3. Extended Validation SSL Certificate (EV SSL): This type of SSL certificate is the most secure and provides the highest level of assurance. It verifies the identity of the organization that owns the website, as well as the domain name. For example, DigiCert EV SSL.
4. Wildcard SSL Certificate: This type of SSL certificate is used to secure multiple subdomains on a single domain. For example, Comodo Wildcard SSL.
5. Multi-Domain SSL Certificate: This type of SSL certificate is used to secure multiple domains or subdomains on different domains. For example, Comodo Unified Communications Certificate.
SSL (Secure Sockets Layer) and TLS (Transport Layer Security) are both cryptographic protocols that provide secure communication between two computers over the internet.
The main difference between SSL and TLS is that TLS is the newer, more secure version of SSL. TLS 1.3 is the latest version of TLS, while SSL 3.0 is the latest version of SSL. TLS is designed to provide encryption, integrity, and authentication, while SSL only provides encryption and authentication.
For example, when you visit a website, TLS is used to authenticate the website, encrypt the data, and ensure that it is not tampered with during transmission. If the website is using SSL, the data is only encrypted and authenticated.
SSL (Secure Sockets Layer) is a security protocol that provides a secure connection between two computers or networks. It is used to secure sensitive data such as credit card numbers, passwords, and other confidential information. SSL works by encrypting the data exchanged between the two computers, making it unreadable to anyone else.
For example, when you purchase something online, your credit card information is encrypted by SSL before it is sent to the merchant’s server. The merchant’s server then decrypts the information so it can be processed. This ensures that your credit card information is secure and cannot be accessed by anyone else.
A Certificate Authority (CA) is an entity that issues digital certificates, which are used to verify the identity of a user or organization. A digital certificate is an electronic document that contains the public key of an entity, along with other information such as the identity of the entity, the digital signature of the CA, and the period of validity.
For example, VeriSign is a popular certificate authority that issues digital certificates for websites. VeriSign’s digital certificates are used to verify the identity of the website and to encrypt the data sent between the website and the user’s browser.
SSL (Secure Sockets Layer) and TLS (Transport Layer Security) are both cryptographic protocols that provide secure communication over the internet. The main difference between SSL and TLS is that SSL is now deprecated and TLS is the current standard.
SSL is a protocol that was developed by Netscape in the 1990s and was used to secure data transmission between a web server and a web browser. It used a combination of encryption, authentication, and message integrity to secure data.
TLS is an upgraded version of SSL. It was developed in 1999 and is now the standard protocol for secure communication on the internet. TLS is more secure than SSL and uses stronger encryption algorithms to secure data and provide better authentication. It also supports newer features such as perfect forward secrecy and elliptic curve cryptography.
SSL (Secure Sockets Layer) is a protocol used to protect data sent between two systems, such as a web server and a web browser. It uses encryption to protect data from being intercepted by malicious actors.
For example, when a user visits a website, the web server and the user’s web browser will establish an SSL connection. All data sent between the two systems is encrypted, meaning that any malicious actors who might be listening in on the connection will not be able to read the data. This helps to protect the user’s data, such as passwords and credit card numbers, from being stolen.
1. Domain Validation (DV) SSL Certificate: This is the most basic type of SSL Certificate, and it only verifies that the domain is owned by the applicant. An example of a DV SSL Certificate is the Comodo PositiveSSL Certificate.
2. Organization Validation (OV) SSL Certificate: This type of SSL Certificate verifies the ownership of the domain, as well as the legitimacy of the organization. An example of an OV SSL Certificate is the Comodo PositiveSSL Wildcard Certificate.
3. Extended Validation (EV) SSL Certificate: This type of SSL Certificate requires a more extensive verification process, and it provides the highest level of trust. An example of an EV SSL Certificate is the Comodo EV SSL Certificate.
4. Multi-Domain SSL Certificate: This type of SSL Certificate allows the applicant to secure multiple domains with a single certificate. An example of a Multi-Domain SSL Certificate is the Comodo Unified Communications Certificate.
5. Wildcard SSL Certificate: This type of SSL Certificate allows the applicant to secure an unlimited number of subdomains with a single certificate. An example of a Wildcard SSL Certificate is the Comodo PositiveSSL Wildcard Certificate.
SSL stands for Secure Sockets Layer and is a protocol used to secure communications between two computers over the Internet. It uses encryption to ensure that the data sent between the two computers is secure and cannot be intercepted by third parties.
SSL works by using a combination of public-key cryptography and symmetric-key cryptography. Public-key cryptography requires two keys, a public key and a private key, to encrypt and decrypt data. The public key is shared with the other computer and is used to encrypt the data that is sent. The private key is kept secret and is used to decrypt the data that is received.
Symmetric-key cryptography requires one key to both encrypt and decrypt the data. This key is known only to the two computers that are communicating and is used to both encrypt and decrypt the data that is sent between them.
To illustrate how SSL works, let’s take an example of a secure web page. When a user visits the page, their browser sends a request to the server hosting the page. The server then sends back an SSL Certificate, which contains the public key. The browser then uses the public key to encrypt the data it sends to the server. The server then uses its private key to decrypt the data. The data is then sent back to the browser, encrypted with the public key. The browser then uses the private key to decrypt the data and display the page.
1. Protection of sensitive data: SSL protects sensitive data, such as credit card numbers, usernames, and passwords, from being intercepted by malicious third parties. For example, when you make an online purchase from a website that uses SSL, your credit card information is encrypted so it cannot be stolen.
2. Authentication: SSL also provides authentication, meaning it verifies that you are communicating with the correct server. This helps prevent man-in-the-middle attacks, where an attacker attempts to intercept your communication with a fake server.
3. Increased trust: By using SSL, you can show customers that your website is secure and trustworthy. This can help increase customer confidence and improve conversions. For example, when customers see the “https” in the address bar and the padlock icon, they know that their information is secure.
Vaibhav Kothia