PKI and Certificate Services application-What is PKI:Public key Infrastructure, key InfrastructurePKI is composed of public key cryptography, digital authentication, certificate issuing structure (CA), registration Authority (RA) and so on: Digital certificate is used for user's authentication; CA is a trusted entity responsible for publishing, updating and revoking certificates; RA accepts user requests and other functionsThe functions that
1. The core of the PKI is the CA2. PKI functions: Authentication authorization Confidentiality Integrity anti-repudiation 3. The theoretical basis of PKI: cryptographyDigital certificatesUse of digital certificatesPKI and related Technologies (1) Cryptography Basic Concepts plaintext: The message the sender will sendCiphertext: PlainText is transformed into seemi
there is a third party Tom in a man-in-the-middle attack, he can tamper with the message or recalculate the message digest, but Tom does not have Alice's private key to encrypt the message digest, and if Tom encrypts the message digest with his private key, When Bob receives the message, it cannot decrypt the digital signature by using Alice's public key to get the message digest text.In conclusion, the different functions of the algorithm can not be:As can be seen from the above, the public ke
pki-system access Policy
In the PKI system, in order to the security of the system, the various parts of PKI need to be divided into different regions, and the access strategy of the firewall is added to prevent the unnecessary service access system.
The large direction is divided into 3 regions:
1. KMC Area (intranet)
A) KMC server
b) KMC Database
c) En
requirements of the system, the overall framework of the solution consists of the following basic ideas:(a) to the group headquarters financial personnel, molecular company financial personnel issued Usbkey (digital certificate), users use Usbkey login financial capital System, improve login security, prevent "user name + password" stolen risk;(b) In the key operation of the financial personnel, the use of Usbkey for electronic signature, and two times identity authentication, to ensure the aut
The delegate Enrollment Agent feature allows you to define exactly what a registered agent can do and what not to do. It allows you to delegate a temporary smart card registration to someone, like a receptionist, in case a user throws his or her smart card home.
The next added feature is called the Network Device Registration service, or SCEP, which is integrated into the local installation. This is a simple feature that allows users to register their credentials with a normal Windows installat
Recently, I learned C and wanted to do a big exercise. So I chose tetris. I am a computer science student. To tell the truth, the theory is okay, and my hands-on skills are poor. I asked my students to do it first, then I will explain to him how to
1. in HP's BootMenu, set BootConfiguration-ConsoleConfiguration-VGA to P (primary), and other (for example, Serial port) to S (Secondary). Otherwise, the output will hit the Serial port, the display will always be "UmcompressingLinux... done,
Understand and deploy symmetric encryption
1. Prepare the symmetric encryption software FatCryptoTool and office Password Recovery to crack the office Password.
2. symmetric encryption system:
Dedicated encryption, fast and efficient.
3. Data
Implement encryption protection for office build applications
Word:
A. By default, word uses the rc4 encryption algorithm.
B. Understand the risk of passwords.
1. Set the office password.
2. Crack the office password. Use Accent Office Password
Click to download OpenSSL
window and Linux to distinguish between the
Unzip the file
Double click:
Win32openssl-0_9_8l_95895.exe
After the installation is complete
\openssl\bin\openssl.exe
Enter a command to generate the private key
Genrsa-
Encryption and decryption authentication 1. symmetric encryption single-key encryption: advantages: 1. faster than asymmetric key encryption 2. A large number of digits is hard to crack. Disadvantages: 1. A security mechanism is required to
Understand and deploy symmetric encryption 1. Prepare the symmetric encryption software FatCryptoTool and office Password Recovery to crack the office Password. 2. symmetric encryption system: dedicated encryption, fast and efficient. 3. Data
Phase 1 Using Preshared Keys
IKE's main mode has six packages, and the six packages are divided into three stages:
1: These first two packets define the algorithms and hashes used to secure the IKE communications and are agreed upon in
The online revocation service is a new component introduced in Windows Server 2008. Is the Microsoft deployment of the OCSP protocol. This feature, coupled with the new OCSP answering service, is a big boost compared to CRL based revocation. The
In the past, autoenrollment was part of the Winlogon process in Windows, exposing it to more attacks. In fact, all Windows NT services have been used as a WMI task by the redesign schema. This means that Windows Vista and Windows Server 2008
> = 6 characters, because the Java keytool seems to have requirements for it.3. Create a server certificate
Generate key: OpenSSL genrsa-out/etc/pki/ca_linvo/Server/server. Key
CSR generation: OpenSSL req-New-key/etc/pki/ca_linvo/Server/server. Key-out/etc/pki/ca_linvo/Server/server. CSR
Generate CRT: OpenSSL ca-in/etc/pki
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