postgresql data encryption

Objective: Recently studied the Android SQLite database and data sharing between contentprovider programs, we clearly know SQLite database default storage location Data/data/pakage/database directory, There is no security for a mobile phone that already has root, and once exploited will result in a leak of database

Objective: In front of the study summed up the usual development encountered in various data encryption methods, the end will be encrypted binary data Base64 encoding, play a two times the effect of encryption, in fact, Base64 from the strict sense is not a cryptographic algorithm, but a coding algorithm, Why use

Products (product_no, name, Price) VALUES (1, ' Cheese ', 9.99); Insert to products (name, price, product_no) V Alues (' Cheese ', 9.99, 1);Many users think it is a good practice to explicitly list field names.If you don't know the values of all the fields, you can omit some of them. At this point, these unknown fields will be populated with their default values. Like what:Insert INTO Products (product_no, name) VALUES (1, ' Cheese '); Insert to products values (1, ' Cheese ');The second form i

Objective:Recently do data synchronization, need to get data from PostgreSQL, found that once the data is more, then the speed of reading is very slow, and memory consumption is very much GC not fall.Code Sample:In order to facilitate the explanation, the following writing the case code, from B2c_order to obtain

Android data storage Sqlite uses SQLCipher database encryption practices, sqlitesqlcipherPreface: A recent study of Android Sqlite database (article address: http://www.cnblogs.com/whoislcj/p/5506294.html) and ContentProvider Program Data Sharing (http://www.cnblogs.com/whoislcj/p/5507928.html ), we clearly know the default storage location of the Sqlite database

The encryption is too complex.AlgorithmImplementation is very difficult, so in the past, many applicationsProgramOnly simple encryption technologies can be used. The result is that the encrypted data is easily decrypted. However, you can use the encryption application interface (cryptography API) provided by Microsoft

21st U+1fffff 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx u+3ffffff " td>111110xx 10xxxxxx 10xxxxxx 10xxxxxx 31 U+7fffffff 1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx And 0x00 is in line with UTF8 rules. This makes us very surprised. And then we found that there were two points that confirmed the problem:1,

AES encryption is a very advanced encryption. many people say it is very difficult to crack AES encryption. the following section describes an example of how to use the AES encryption algorithm to encrypt data. when studying Discuz, we found that Discuz has a set of perfect.

The following articles mainly introduce how to use MySQL encryption functions to protect sensitive data on websites. If you are using a MySQL Web application, it can store passwords or other sensitive information in applications. Protecting this data from access by hackers or prophers is an important concern, because you cannot allow unauthorized users to use or

PostgreSQL database data simple import and export Blog categories: DataBase Postgres Command operation:Data export: Pg_dump-u postgres (user name) (-t table name) database name (default with username) > C:\fulldb.sqlImport of data: Psql-u postgres (user name) database name (default) Pgadmin Operation:Data export: Right-click-->backup-->ok on the library n

postgres=# select * from Test_domain; Id ----- 1 0 255 100 (4 rows) Create your own enumeration data type in PostgreSQL [Email protected] bin]$./PSQL test test Psql (9.3.9) Type ' help ' for help. test=# CREATE TYPE user_enum as enum (' Enum1 ', ' enum2 ', ' enum3 '); CREATE TYPE test=# \dt List of data types Schema | Name | Description --------+-----------+---

Recently, the company has a "around the nerve cat" small game hot not! The company also decided to develop a series of nerve cat games, so I was pulled over.Later, using COCOS-2DX to develop a small game, the client with a LUA script, in order to server and client interaction security, we decided to API interfaceThe transmitted JSON data is encrypted and decrypted. The general situation is client-side encryption