First, we need to distinguish the two basic concepts of encryption and authentication.Encryption encrypts data so that illegal users cannot obtain the correct data even if they have obtained the encrypted data. Therefore, data encryption can protect data and prevent attacks. The focus is on data security. Identity Authentication is used to determine the authenticity of an identity. After the identity is confirmed, the system can grant different permissions according to different identities. The
In general, the current SaaS service provides the current SDK or API docking service that involves an authentication and data encryption issue. It is generally common practice to configure the use of asymmetric encryption to solve this problem, you hold the public key of the SaaS company, the SaaS company holds your public key, you can do encryption and signature verification.Let's look at two ways to gener
We all know that SSH has been providing two ways to log in: Password authentication method and key authentication method, the password is the way we use most often, and then we talk about using the key to log in.Client (Windows Xshell) to Server (CentOS6.6)1. Generate key (public key and private
1. Brief description of public key and private key (two-key encryption technology:
Assume that data transmission from data transmitter A to data receiver B (take server a and client B as an example ). B now has a pair of key pairs (public and private keys). B sends the public key
Original (English): http://www.youdzone.com/signature.html
This article (Chinese, translated) is reproduced in: http://www.ruanyifeng.com/blog/2011/08/what_is_a_digital_signature.html
1.
Bob has two keys, one is the public key, the other is the private key.
2.
Bob gave his public key to his friends----patty, Doug, Susan----each one.
3.
Susan is going to wr
The public key and private key are a key pair (a public key and a private key) obtained through an algorithm, the public key is the part of the key pair, and the private
Oracle primary key deletion, joint primary key creation, oracle primary key1. Delete the primary key alter table tablename drop PRIMARY_KEY execute the preceding SQL statement to delete the primary key; if it fails, use ALTER TABLE TABLENAME DROP CONSTRAINTS COLUMN CASCADE; -- delete the constraint ALTER TABLE TABLENAM
MySQL creates a primary key, a foreign key, and a composite primary key. For more information, see.
MySQL creates a primary key, a foreign key, and a composite primary key. For more information, see.
1. Create primary
Exception details when accessing the WCF service: System.Security.Cryptography.CryptographicException: The key set does not exist. ArgumentException: The certificate "Cn=myservercert" must have a private key that is capable of key exchange. The process must have permission to access the private key. This problem is cau
Solve the Cocos2d-x into the game, adjust the sound key is not used, you need to press the back key, the sound key is available Bug, cocos2d-xbug
We know that all button events are processed in view,
The main interface of our game inherits Cocos2dxGLSurfaceView, so there should be a problem with the button processing in this file, so we found this file,
This is
+ functiondataprocessing (data) { A varI=0; Len=data.length; the varNewData= {}; + varDataarr= []; - for(i; ILen; I++) { $ Dataarr.push ({ $ //the new key name - Linetype:data[i].value, - //the new value name the Linename:data[i].label - })Wuyi } the returnDataarr
Virtual-key codes
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The following table shows the symbolic constant names, hexadecimal values, and mouse or keyboard equivalents for the virtual-key codes used by the system. The codes are listed in numeric order.
Constants
Vk_lbutton (01)Left mouse button
Vk_rbutton (02)Right mouse button
Vk_cancel (03)Control-break Processing
V
Public key cryptography system and RSA public key algorithm
Abstract:
This article briefly introduces the ideas and features of the public key cryptography system, and introduces the theoretical basis, working principle and implementation process of the RSA algorithm, A simple example shows how the algorithm is implemented. At the end of this article, the shortco
Reprint: http://blog.csdn.net/a1232345/article/details/44594867 explanation of public key and private key公钥: For outward release, accessible to anyone,私钥: To save yourself, do not give othersThe two situations are often confused and must be understood.Case 1: Public key for "encryption", private key for "decryption"If
http://www.btcside.com/new/detail/2145
This is the three words that often appear in Bitcoin, so what do they mean by each other? What kind of relationship do they have?
Let's talk about a private key, such as a string 5KYZDUEO39Z3FPRTUX2QBBWGNNP5ZTD7YYR2SC1J299SBCNWJSS, which is a private key. Any application that correctly supports the Bitcoin protocol can recognize the string as a private
Label:First, what is the primary key, foreign key: There are several attributes in a record in a relational database, which can be a primary key if one of the attribute groups (note is a group) uniquely identifies a record: Student Table (School number, name, gender, Class) Each student's school number is unique, the study number is a primary
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