SSL is the abbreviation of "Secure Sockets Layer". It is a security layer protocol, mainly used to ensure the security of Internet communication. Xinjiang Website construction company Technicians tell you that SSL technology can ensure that information and data transmitted on the Internet will not be stolen and tampered with by hackers, ensure the confidentiality and integrity of Internet communication, and enhance network security and credibility. This article will explain the role of SSL and the security guarantee of its implementation.
1、 Role of SSL
1. Guarantee the confidentiality of information
Xinjiang Website construction Company technicians The SSL protocol uses symmetric key encryption algorithm to encrypt data, so that hackers cannot intercept and steal data in the process of information transmission, because even if hackers obtain data, they cannot read the data content, thus achieving the purpose of protecting information confidentiality.
2. Ensure the integrity of data transmission
The SSL protocol uses a hash function to protect the integrity of data transmission. By adding a hash code to the data packet and digitally signing the hash code, it ensures that the data will not be tampered with by intermediaries during transmission. If any data is changed or maliciously modified, it will fail to pass the verification of digital signatures, So as to protect the integrity of data transmission.
3. Prevent middleman attacks
The SSL protocol uses digital certificates to solve the man in the middle attack problem. Using digital certificates can ensure that the connection established with the server is correct, Technical personnel of Xinjiang Website Construction Company said It can effectively prevent hackers from performing man in the middle attacks on SSL encryption channels by tampering with domain name resolution data, modifying IP addresses, etc.
4. Enhance network security and credibility
Xinjiang Website Construction Company Technicians tell you It is said that the SSL protocol has a high degree of security in encryption technology, identity authentication and digital certificates. With these good security assurance mechanisms, the SSL protocol provides a secure, efficient and stable network guarantee, which can help network administrators better protect users' privacy and data security, thus enhancing the credibility and security of the network.
2、 Security guarantee of SSL implementation
1. Symmetric key encryption
Symmetrical key encryption is a simple, fast and efficient encryption method. Its key can be stolen by hackers while encrypting data. Therefore, it is generally encrypted by asymmetric key encryption to improve the security of data transmission.
2. Asymmetric key encryption
Asymmetric key encryption, also known as public key encryption, is an encryption technology used for data encryption and digital signature, Technical personnel of Xinjiang Website Construction Company said This technology uses a pair of public keys and private keys. The public key is used to encrypt data and the private key is used to decrypt data or digital signatures. Therefore, when the key is stolen by hackers, the security of data transmission will not be damaged.
3. Digital certificate
Digital certificate is an electronic document formed by digital signature, secure hash, asymmetric encryption, certificate authority and other technologies. It is used to ensure the security of information exchanged between computers, and is also a way to ensure the security of SSL communication. The digital certificate contains the information of the encryption certificate owner's public key, the validity period of the certificate, the certificate authority, etc. The digital certificate can prove the legitimacy of telling the identity of the communicating party, thus effectively avoiding man in the middle attacks.
4. Secure Hash Algorithm
The secure hash algorithm, also known as hash function, is an algorithm that can convert data of any length to a fixed length value. It can be used to protect the integrity of data and ensure that data will not be tampered with during transmission. Technical personnel of Xinjiang Website Construction Company said In the SSL protocol, the secure hash algorithm is applied to protect the integrity of message data in the transmission process. As a part of digital signature, hash code ensures that message data is not tampered during data transmission.
5. Certification Authority
Technicians from Xinjiang Website Construction Company tell you The certification authority is an independent third-party authority that signs SSL certificates. The certification authority issues digital certificates by verifying the identity of the applicant, providing a proof of legality, thus ensuring the security of SSL. At the same time, the certification authority can also publish a certificate revocation list (CRL) to revoke invalid or expired SSL certificates.
