Asymmetric Cryptography Concepts
1, the main difference with the symmetric encryption algorithm is that encryption and decryption of the key is not the same, a public (public key), a secret (private key). This paper mainly solves the problem of key distribution management of symmetric encryption algorithm, and improves the security of the algorithm.
2, the asym
First, prefaceWith the broadcast technology hot, all the Live app, the early live app's various request protocol parameter information did not do any encryption measures, but slowly someone began to use the back door began to brush powder attention tool, you can make a new small Hua Dan minute into the net red. So somewhere in this problem, the live app starts encrypting the network request parameters. So that is the focus of this article analysis. Th
provides two authentication modes: 802.1x authentication (for enterprise users) and pre-shared key PSK authentication (for individual users ), so we only test WPA-PSK encryption. WPA2, an upgraded version of WPA encryption. It is an IEEE 802.11i standard authentication form verified by the Wi-Fi Alliance. WPA2 implements the mandatory element of 802.11i, in particular, the Michael algorithm is replaced by
SQL Server encryption and SQL Server encryption
Encryption in SQL Server is hierarchical, and each upper layer provides lower protection.
Instance:/**SMK (Service Master Key) is generated when SQL Server is installed. It is protected by Windows DPAPI (Data Protection API ).**/
/** Create a Database-level DMK (Database Master Key), protected by SMK **/Create mast
We have introduced the core implementation principles of mainstream double-layer encryption shells,And compatibility, while simplifying the encryption Shell Core with security considerations.The compatibility and security of the encryption Shell Core are discussed, and the Implementation Mode of the encryption Shell Co
PHP implements the AES256 encryption algorithm instance and the aes256 encryption algorithm instance. PHP implements the AES256 encryption algorithm instance. aes256 encryption algorithm instance this article describes how PHP implements the AES256 encryption algorithm, whic
650) this.width=650; "src=" Http://s5.51cto.com/wyfs02/M01/89/00/wKiom1gEbU7Rk8J9AAAgh7lHOtQ358.png "title=" Symmetric encryption. png "alt=" Wkiom1gebu7rk8j9aaagh7lhotq358.png "/>Symmetric encryption is the fastest and simplest way to encrypt encryption and decryption with the same key. Symmetric encryption has many a
Use default encryptionpublic static string Desencrypt (String strText)Use default decryptionpublic static string Desdecrypt (String strText)Encrypt the string, note that the length of the Strencrkey is 8 bitspublic static string Desencrypt (String strText, String strencrkey)Decrypt the string, note that the length of the Strencrkey is 8 bitspublic static string Desdecrypt (String strText, String sdecrkey)Encrypt the data file, note that the length of the Strencrkey is 8 bitspublic static void De
I. Encrypting Windows system folders
Everyone will have some privacy, such as work plan, personal information and so on, in order to protect these secrets, encryption software has become the first choice for many people. However, the popular encryption software on the Internet is basically a file or folder directly enc
In the real environment, we will encounter the loss or theft of database backup disks. At this time, malicious destructive parties only need to restore or attach the database to view data. Next, I will introduce the Transparent Data Encryption method to protect your database. If data A is encrypted using TDE, the database uses A certificate-protected encrypted data key because it cannot be restored or attached to A backup disk.
1. What is TDE?
Transpa
650) this.width=650; "src=" http://s5.51cto.com/wyfs02/M01/89/00/wKiom1gEbU7Rk8J9AAAgh7lHOtQ358.png "title=" Symmetric encryption. png "alt=" wkiom1gebu7rk8j9aaagh7lhotq358.png "/>Symmetric encryption is the fastest and simplest way to encrypt encryption and decryption with the same key. Symmetric encryption has many a
In the previous article, I introduced some important classes of the enterprise database cryptographer module, and introduced the extended interfaces provided by the enterprise database cryptographer module. Today I will perform extended development based on these interfaces, implements two encryption and decryption methods (discrete encryption and symmetric encryption
Ixi
In actual applications, symmetric encryption is not enough. In more cases, symmetric encryption and asymmetric encryption are used in combination. asymmetric encryption (public key encryption) features slow speed, different keys for
The classical symmetric encryption algorithm is DES algorithm, and then derives the enhanced des algorithm of 3DES, TripleDES and so on. Moreover,. NET also provides symmetric encryption algorithms such as RC2, Rijndael, and so on. The details are detailed below.
DES encryption algorithm
The most classical algorithm in symmetric
* * about the use of AES encryption and SHA256 encryption used in IOS development
**The author in the previous period of time on this issue with the background of the docking of people, and finally finally determine the problem is our encryption, although all for the same species, but there are essential differences. Below I briefly describe the difference and en
When releasing a PHP program you have written, are you worried that the result of your hard work will be occupied by others? In fact, we can use Zend Encoder to add a protective shell to our PHP file. Software Version: 2.0.1 Software size: 10.2M applicable platform: Win9X/2000/XP Official Website: external Project "Create a Project, and then add the files or folders you want to encrypt under this Project. I
Reprint Please specify source: http://blog.csdn.net/zhaokaiqiang1992In the previous article, we discussed the DES algorithm, but also understand how to ensure the consistency of the encryption and decryption results under different platforms. But Des, as a kind of encryption algorithm that has appeared for a long time, with the enhancement of computer computing ability, des
PHP and DES encryption and decryption instances. Example of the encryption and decryption function in PHP and the DES encryption and decryption instance. example of the php encryption and decryption function: the code is as follows: ** function: encrypt strings * parameter 1: encry
Several common encryption functions in PHP and common encryption functions in PHP. Several common encryption functions in PHP. MD5 encryption in PHP: stringmd5 (string $ str [, bool $ raw_outputfalse]) 1. by default, md5 () is a 32-character hexadecimal number. several common encry
The use of phprsa encryption and decryption is detailed, and the use of rsa encryption and decryption is detailed. Explanation of use of phprsa encryption and decryption, and explanation of use of rsa encryption and decryption 1. the first step of encryption and decryption i
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