What is a digital certificate?

Question 1: What is a digital certificate, what is the use? Digital certificate is a string of numbers that marks the identity information of the communicating parties in the Internet communication, providing a way to verify the identity of the communicating entities on the Internet, the digital certificate is not a digital ID card, but the identity certification authority stamped on the digital ID card on a chapter or seal (or added to the digital ID card on a signature). It is issued by the authority - CA agency, also known as Certificate Authority (Certificate Authority) center, people can use it to identify each other online.

Question 2: What is the management of digital certificates Means to ensure that your account only in the installation of digital certificates on the computer to log in. If you apply for then stands other computer login will prompt you to cell phone SMS verification. If your own computer to apply for public **** even if

Question 3: What is the device digital certificate? Digital certificate software digital certificate and hardware digital certificate. Simply put, software digital certificates such as the use of equipment or operating licenses (lisence), hardware certificates such as Internet banking U shield, e-commerce in the attack with the dongle.

Question 4: What is a digital certificate? Digital certificate is an authoritative electronic document, issued by an authoritative and impartial third-party organization, that is, the CA center certificate.

It takes digital certificates as the core of the encryption technology to encrypt and decrypt the information transmitted on the network, digital signatures and signature verification, to ensure the confidentiality and integrity of the information transmitted online. With digital certificates, even if the information you send is intercepted by others on the Internet, or even if you lose your personal accounts, passwords, and other information, you can still ensure the safety of your accounts and funds.

Question 5: What do you mean by digital certificate? Digital certificates

Digital certificates in the network is similar to the people in the community to hold the ID card and other documents, used in the network to prove the identity of the digital certificate holder. Digital certificate holders may be a natural person in the real world, legal persons, may also be a network device. Digital certificates can be simply understood as "network ID", used to prove their identity on the network.

Both digital certificates and ID cards are issued by specialized agencies. The ID card is usually issued by the Public Security Bureau, with the official seal of the issuing organization. The digital certificate protected by the Electronic Signature Law is a third-party digital certification center licensed by the state (referred to as CA center), such as the Ministry of Information Industry to obtain the approval of the qualification of the integrity of the Tianwei digital certification center to issue digital certificates above the CA center of the electronic signature to prove the validity of the digital certificate. According to the relevant state departments authorized the establishment of a digital certification center, the Internet has the credibility to use it to issue digital certificates signed by the electronic contract, electronic orders and other electronic instruments have the force of law.

Digital certificates mainly include the following information: certificate version number, certificate holder information, certificate issuer (CA) information, certificate validity, certificate serial number, certificate issuer's signature. This information is similar to the ID card. The certificate issuer's signature on the digital certificate can play a role in the digital certificate itself to prevent forgery, which is similar to the official seal on the ID card. But the CA center on the certificate of the digital signature is impossible to be forged.

Based on the application of digital certificates perspective classification, digital certificates can be divided into the following categories:

? Server certificates

Server certificates are installed on server devices to prove the identity of the server and to encrypt communications. Server certificates can be used to prevent fake sites.

With a server certificate installed on a server, a client browser can establish an SSL connection to the server certificate, and any data transmitted over the SSL connection is encrypted. At the same time, the browser will automatically verify the validity of the server certificate, to verify that the site accessed is not a fake site, the server certificate to protect the site is mostly used for password login, order processing, online banking transactions and so on. The world's most recognized server certificate brand is verisign. The trusted network compiled by its server certificates has covered the globe, and the company has now launched its China services through the United Nations digital certification enterprises such as Skyworth Integrity

? Email Certificates

An email certificate can be used to prove the authenticity of an email sender. It does not prove the authenticity of the name of the owner of the certificate identified in the CN item on the digital certificate, it only proves the authenticity of the e-mail address.

When you receive an email with a valid electronic signature, you can be confident that the email was sent from the specified email address, and that it has not been tampered with since it was sent.

Additionally, using the received email certificate, we can send an encrypted email to the recipient. This encrypted email can be transmitted over a non-secure network and can only be opened by the recipient's holder.

? Client-side personal certificates

Client-side certificates are primarily used for authentication and electronic signatures.

Secure client certificates are stored in a dedicated u *** key. Certificates stored in the key cannot be exported or copied, and use of the key requires entry of the key's protection password. The use of this certificate requires physical access to its storage medium u *** key, and need to know the key's protection password, which is also known as two-factor authentication. This means of authentication is currently one of the most secure means of authentication in the internet.

Question 6: What is a ca digital certificate? It is like an identification number of your business in the IRS, in the online filing with its authentication directly associated with your IRS account

Question 7: What is the enterprise digital certificate Basically, the digital certificate is a security key for confidentiality and security ~ ~ provide the following information for your reference What is the use of enterprise digital certificate?

1, the basic function

o authentication

On the Internet, the identity of the enterprise has not been able to get a very effective confirmation, which has become a major bottleneck hindering the development of e-government and e-commerce. Identity authentication using PKI digital certificate technology relies on the uniqueness of key pair matching in asymmetric encryption algorithms to ensure the legitimate identity of enterprises on the Internet.

o Digital Signature

Combined with PKI digital certificate technology, in Word, Excel, PDF and other types of electronic documents plus play a role in anti-counterfeiting, anti-repudiation role of the electronic signature, and in the form of a traditional seal pattern embedded in electronic documents, the effect is like a physical signature. But due to the combination of digital certificates, digital watermarking and other security technologies, its security is higher than the physical signature, and can greatly reduce the traditional signature documents in paper, transmission and other aspects of the cost of using it is also more convenient.

2, the actual application

Administration for industry and commerce will be the basic enterprise registration information embedded in the "enterprise digital certificate", can be widely used as an "e-license" in:

o online business operations

Enterprises that have received the Enterprise Digital Certificate can complete the annual inspection for the following years through the online annual inspection. Enterprises can log in to the industry and commerce website, complete the online annual inspection form and submit it online, and the industry and commerce staff will complete the annual inspection and notify the enterprises of the results. Enterprises can also conduct online name inquiries, registration, change and many other industrial and commercial business.

(Enterprises can consult their local industry and commerce departments to find out if the above online business is available in their localities.)

o Online License Verification

Enterprises that have received an Enterprise Digital Certificate can log in to Huixin.com to view their own e-license or send it to relevant business partners or related units to view the content of their business license in real time by obtaining a verification code. Verification code: Enterprises that have received enterprise digital certificates can log in to the "e-license holder member" with a USB-key - click on "My License Application" - click on "Verification Code Management" - Click "Generate New Verification Code". The verification result will be displayed on the webpage to determine whether the e-license is real and effective.

o Enterprise Information Query

Any "enterprise digital certificate" user will automatically become a certified member of the Huixin website, the user logged in to the website, you can enter the online query service column, in the way they need and the conditions of querying the relevant information of the registered enterprises in Zhejiang Province, you can also query the data and information of some of the enterprises outside the province. The data of enterprises outside the province can also be queried.

o e-commerce applications

e-license in e-commerce activities have broad application prospects, and its most basic application is used to identify and confirm the participation of e-commerce of the parties involved in the subject of the lawful and effective identity; but also through the authoritative channels and proprietary technology to show its business license, so as to achieve the online "bright license to operate ", and these applications can be achieved through the "electronic license" function of the development and expansion (see "Huixin authentication")

o electronic signature

"Enterprise digital certificate" users can use the country's first printable electronic signature function on the electronic document with a digital watermark enterprise seal, and can be output through an ordinary printer with a digital watermark anti-counterfeiting role of the seal of the paper document.

3, performance

o guarantee the security of identity authentication and digital signature - digital certificates are issued by an authoritative and impartial third-party organization that is the CA Center, digital certificates as the core of the encryption technology can be encrypted and decrypted information transmitted on the network, digital signatures and signature verification, to ensure that the confidentiality of the information transmitted online, the integrity of the transaction, as well as the entity's identity, the authenticity of the signature information can not be denied. Authenticity, the non-repudiation of the signature information, so as to protect the security of network applications.

o Convenient to use - USB-Key is easy to carry, easy to use, and can be operated by *** computers whenever and wherever you are.

o Efficient and economical - with the "enterprise digital certificate", enterprises for industry and commerce and other *** related business no longer need to run to the *** authorities to queue up, at the same time, to carry out e-commerce contract signing and so on is also much faster, but also greatly save the cost of doing business.

o Establish the image of integrity management - enterprises can operate online license, no longer afraid of counterfeiting and being counterfeited.... >>

Question 8: What is a personal digital certificate for online transactions? Online banking, safety first. In order to ensure security, the most effective way is to use digital certificates. Digital certificates are the fundamental guarantee of online banking security, is commonly used at home and abroad a set of mature information security protection measures. So far, we have never found a single case of online transaction fraud due to the breach of the digital certificate mechanism. Digital certificate is your network identity card, it is an electronic file containing your identity information, proof of who you are on the Internet. Digital certificates are also your security guards, which can ensure the security of your online transmission of information, preventing others from stealing or tampering with the information. With digital certificates, you can also electronically sign online transactions, realizing your online signature. When you operate in online banking, the certificate will form an electronic signature attached to the transaction instructions you send to the bank, so that the bank can recognize your identity, so that others can not crack, modify the information you and the bank transmit to each other. With a digital certificate, you can rest assured that you can safely use the various functions of Internet banking. Digital certificates should be issued by an authoritative third-party security certification organization (CA), and should not be issued by the bank (including e-commerce sites) as a party to the transaction. The third-party CA, for both sides of the transaction to play the role of risk avoidance. For example, in the event of an Internet banking dispute, the third-party CA can provide appropriate proof for both parties to clarify the responsibilities of both parties. If customers use digital certificates issued by the bank's own CA, this means that the bank is both a referee and a player, and in the event of a dispute, it is difficult to protect the legitimate rights and interests of customers. Financial regulators clearly advocate the use of digital certificates issued by third-party security certification organizations (CA). China Financial Certification Authority (CFCA) is a national authoritative security certification organization approved by the People's Bank of China and the national information security management agency, and is one of the important national financial information security infrastructure.CFCA, as an authoritative, trustworthy and impartial third-party security certification authority, is responsible for providing financial security certification services for the financial industry. third-party security certification authority, responsible for providing certificate services for various certification needs in the financial and non-financial fields.

Question 9: Taobao digital certificate is what 1, digital certificate is what can really not very good explanation, is that our computer's browser can call a gadget, it is through a more reliable encryption, making it difficult for others to forge and crack it.

2, Taobao digital certificate is Taobao site made a digital certificate of the gadget, but started this function, you pay every time, Taobao station will require you to operate the computer installed on the digital certificate, and check. If you don't have it, you won't be able to take the next step, which means you won't be able to pay for important operations.

3, digital certificates can be exported to a small "certificate file", this file can be easily sent to other computers via USB flash drive or e-mail or network disk (exported when you can set the import and export password Oh), so if you want to use it on other computers, please export the certificate on the other computer to install it. If you want to use it on another computer, please install the exported certificate on the other computer.

4. Of course, the so-called "security" is relative. ...... This is a different topic.

Question 10: digital certificates of what software ah can not be counted as software, is a plug-in to ensure the security of the use of software, generally related to the money of the software or web page, there will be such a plug-in