postgresql encryption

I. preface some time ago, I have translated an article about changing your website from MySQL to PostgreSQL, in fact, I was more interested in the specific operation of converting the background database of an application from MySQL to PostgreSQL, and did not care about the advantages and disadvantages of MySQL and PostgreSQL. I did not expect an unexpected respo

Problem: an ASP to ASP is being created. net mall revision, the original registered users need to retain, the original user password is ASP MD5, 32-bit encryption, remember ASP MD5 and ASP.. Net's MD5 encryption results are not equal, so I tried:The original MD5 encryption method is as follows:/// /// MD5 Encryption Al

In per method DOTNET encryption, the primary solution is the method body correspondence, that is, how to determine the encryption information corresponding to the method body to be decrypted in the runtime encryption shell. Currently, most encryption shells use the metadata of DOTNET to store this relationship. We kn

My machine: AMD64x2 4400 + + 1 GB memoryPhase 1-compilation and installation:1. Download postgresql-9.1.3.tar.bz2 from sqlsql.2, copy the source code to the/usr/src/postgresql-9.1.3.tar.bz2 and cd/usr/src3, decompression: tar xjvf postgresql-9.1.3.tar.bz24, enter the source Directory: cd postgresql-9.1.35. Create the p

This article mainly introduces some similarities between DB2 database development and PostgreSQL development in actual operations. What's more, I recently used DB2 databases and wrote some differences between them. Not necessarily true. But you can see the difference between the two. 1. Data Definition Language (DDL) and peripheral tools: the difference between DB2 and postgresql is almost 0. The specific

The content of this article complies with the CC copyright agreement, can be reproduced at will, but must be indicated in the form of Hyperlink original source and author information and copyright statement URL: www.penglixun.comtechdatabasemysql-vs-postgresql-part-1-table-organization.html translated from: blogs. enterprisedb. com20101129my The content of this article follow the CC copyright agreement, can be reproduced at will, but must be in the fo

Basic one-way encryption algorithm:BASE64 strictly speaking, it belongs to the encoding format, not the encryption algorithmMD5 (Message Digest algorithm 5, Information Digest algorithm)SHA (Secure Hash algorithm, security hashing algorithm)HMAC (Hash message authentication code, hash messages authentication code)Complex symmetric encryption (DES, PBE), asymmetri

Objective: In addition to landing in the project, payment and other interfaces using RSA asymmetric encryption, outside the use of AES symmetric encryption, today we come to understand the AES encryption. Several other encryption methods:RSA encryption of Android data encr

(Src.getbytes ()); byte[] encode = Ba Se64.encodebase64 (Src.getbytes ()); System.out.println ("Encode:" + new String (encode)); byte[] decode = base64.decodebase64 (encode); System.out.println ("Decode:" + new String (decode));} public static void BouncyCastleBase64 () {byte[] encode = org.bouncycastle.uTil.encoders.Base64.encode (Src.getbytes ()); System.out.println ("Encode:" + new String (encode)); byte[] decode = Org.bouncycastle.util.encoders.Base64.decode (Enco DE); System.out.println ("

As with symmetric encryption algorithms, the related classes of all asymmetric algorithms also exist in the System.Security.Cryptography namespace. In this namespace,. NET Framework provides four kinds of asymmetric encryption algorithms, such as RSA, DSA, ECC and Differ-hellman. This section describes several of the major related classes and interfaces. The relevant content of the application will be descr

The last blog about how to play the hash algorithm, but that article did not explain clearly. This blog post I will try to make the things that are not explained clearly. Of course, the theme of this article is to play symmetric encryption. . NET of symmetric encryption technology There are mainly such several: Des,aes,rijndael,tripledes (3DES). Now, let's play around with them! As with the previous blog p

To start encryption: 1.BIOS Currently, the simplest and easiest system password is the number of BIOS passwords. Set the BIOS password, each boot into the Windows operating system, the computer will be prompted to enter the BIOS password, only the correct input password, before the start of the winodows system, if the password is not correct, then the illegal intruder can only do points on the boot, shutdown operation. Start the computer, press the DE

[Android development experience] a safer algorithm than DES encryption-3DES encryption algorithm, android3des Reprinted please indicate the source: http://blog.csdn.net/zhaokaiqiang1992 In the previous article, we discussed the DES algorithm and learned how to ensure the consistency of encryption and decryption results on different platforms. However, DES, as an

Encryption stored procedure with encryption Create proc Sel(@ ID int, @ name varchar (100 ))With EncryptionAsInsert test (ID, name) values (@ ID, @ name) The following stored procedure is used for decryption. Create procedure sp_decrypt (@ objectname varchar (50 ))AsBeginSet nocount on-- Csdn: j9988 copyright: 2004.07.15-- V3.2-- Unlimitedly cracked bytes, applicable to sqlserver2000 stored procedures, f

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 the encryption key is public, this is used for the client to upload the encrypted data to

, once only stole the people's trousers, and now to hang in the street, and posted a notice said, "Look, ya pants have patches on it." If the drag library is difficult to avoid, it is necessary to use a reasonable encryption strategy to reduce the impact of the attacker to a smaller base. The age of the plaintext password must be over, but is encryption secure? Those bad

One: symmetric encryption original plaintext ---key --- encrypted data --- key --- original plaintextfast, confusing plaintext through algorithms, consuming less system resourcesTwo: Asymmetric encryptionslow encryption and decryption, high system resource consumptionThree: Hybrid data encryptionencryption process: Randomly generates a symmetric key, using the public key to encrypt the symmetric key. decr

Forward Source Link: RSA encryption algorithm encryption and decryption process analysis1. Overview of cryptographic algorithmsThe encryption algorithm can be divided into reversible and non-reversible encryption depending on whether the content is restored.Reversible encryption