PHP, and phpdes. PHP encryption and decryption functions and DES encryption and decryption instances. phpdes encryption and decryption instances this article describes the application of the encryption and decryption functions in PHP and DES encryption and decryption. PHP
Symmetric encryption and asymmetric encryption, asymmetric encryptionSafe communication methods must meet the following three conditions:1. Integrity, that is, the message has not been tampered with midway through.2. Confidentiality, which cannot be decrypted by a third party.3. verifiable. The message receiver can determine who sent the message.
Symmetric encryption
The example of this paper describes the Base64 encryption, MD5 encryption and SHA1 encryption implemented by JS. Share to everyone for your reference, specific as follows:
1, Base64 encryption
The Base64.js file is introduced into the page, and the method is called:
2, MD5
PHP encryption and decryption function and DES encryption and decryption instance, phpdes encryption and decryption instance
This article describes the application of the encryption and decryption function in PHP and DES encryption and decryption, and shares it with you for
Php user password encryption algorithm analysis [Discuz encryption algorithm], discuz Encryption Algorithm
This example describes the php user password encryption algorithm. We will share this with you for your reference. The details are as follows:
During secondary development with Discuz today, the user name and pass
1. Download the Gtmbase64-master and Aescrypt-objc-master from GitHub and import the project as shown in.2. Pre-use configuration and precautions:(1) gtmbase64.m in build phases need to be set-fno-objc-arc(2) Import #import in #import "nsstring+base64.m" File (3) Add #import in the #import "gtmbase64.m" File 3. CusMD5.h and cusmd5.m files#import ---> MD5 can only be called an irreversible encryption algorithm, can only be used as a test process, can n
Original: DES encryption and decryption matching C#des encryption decryption symmetric encryption in PHPThe online search for PHP des encryption and decryption exactly matches the previous c# string encryption decryption function can be used for C # and PHP communication to
Encrypted decryption function and DES encryption and decryption instance in PHP, Phpdes encryption and decryption instance
In this paper, the application of cryptographic decryption function and DES encryption and decryption in PHP is described, and it is shared for everyone's reference. Specific as follows:
Examples, examples of PHP
Java encryption algorithm--MD5 encryption and hash hashing with secret key encryption algorithm source code
Recently learned encryption algorithm knowledge, using MD5 encryption, Baidu a lot of online data, not very detailed, here on how to implement the MD5
-collision: it is very difficult to find a data with the same MD5 value (that is, forged data) because the original data and its MD5 value are known.5. Strong anti-collision: it is very difficult to find two different data so that they have the same MD5 value.The function of MD5 is to "compress" large-capacity information before signing a private key using digital signature software into a confidential format (that is, to convert a byte string of any
This article mainly introduces the base64 encryption, md5 encryption and sha1 encryption methods implemented by JS, and analyzes in detail various common JavaScript encryption methods and implementation techniques based on the example form, if you need it, refer to the example in this article to describe the base64
One, asymmetric encryptionAsymmetric encryption has a set of key pairs, one is public, anyone can obtain, called the public key;One is self-preservation and strictly confidential, called the private key.The rules are as follows:by someone A the public key encrypted message, only by the A the private key is decrypted;by A The private key encrypts the message, only by the A decryption of the public key. sender, the receiver holds the public key / privat
"Data Recovery failure description"Company financial personnel for data maintenance, misoperation, in the financial software to initialize the data, because recently did not do backup, it caused a lot of financial documents lost.Because the financial data is very important, the customer is anxious to get back.The data Recovery Analysis "Engineer detection, in SQL Server database Enterprise Manager, discover what the
key that you sent over. If the two keys are consistent, the server encrypts a "random string" with the public key and sends it to the client software;3. After the client software receives the "encrypted-random string", it can be decrypted with your private key, and then send the "random string" to the server
The second level does not require a password to be sent over the network compared to the firs
The RSA algorithm is the first algorithm that can be used for both data encryption and digital signature. It is easy to understand and operate, and is also popular. Its security is based on the difficulty of big integer factorization, while the big integer factorization is a famous mathematical problem. So far, there is no effective solution, therefore, the security of the RSA algorithm can be ensured.
The RSA algorithm consists of the generation of
This document describes seven methods:
I. Simplest encryption and decryption
Ii. Use the Escape Character "\"
3. Use the script encoder produced by Microsoft for encoding (simple decoding)
4. Add any NUL null characters (hexadecimal 00 h) (self-created)
5. Useless content and line feed space tab Method
Vi. Self-write decryption Function Method
7. Misuse (self-developed)
During webpage creation (in fact, webpage Trojans), the most worrying thing is
AES encryption algorithm, user-sensitive information encryption, and aes Encryption Algorithm
/*** AES is a reversible encryption algorithm that encrypts users' sensitive information and performs Base64 encoding and conversion after the original data is encrypted by AES;*/Public class AESOperator {/** The Encrypted Key
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