For most password encryption, we can use md5, sha1, and other methods. This can effectively prevent data leaks, but these methods only apply to data encryption that does not require restoration. For the information to be restored, a reversible encryption and decryption algorithm is required. the following set of PHP functions implement this
How to crack md5 encryption and how to crack md5 EncryptionWe know that md5 encryption is irreversible, but it is easy to crack md5 encryption.There are also many online attacks. Since it is irreversible, how did the online cracking come from?The reason is simple, that is, brute force cracking.For example, we calculate the md5 of the combination of all characters on the keyboard, and store the encrypted str
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
Objective:There are many kinds of encryption commonly used in iOS, the first two days in the work encountered RSA encryption, now the generation share out.RSA FundamentalsRSA encrypts the data using the "key pair". Before encrypting and decrypting data, you need to be a public key and private key.
Public key: Used to encrypt data. Used for public, typically stored in data providers, such as iOS cli
This article describes the encryption and decryption function in PHP and DES encryption and decryption application, share for everyone to reference. Specifically as follows:
Examples, examples of PHP encryption decryption
Cryptographic functions:
Copy Code code as follows:
/*
* Function: Encrypt string to handle
* Parameter one: Content that
Php custom encryption and decryption program instance, php encryption and decryption instance. Php custom encryption and decryption program instance, php encryption and decryption instance this article describes the php custom encryption and decryption program. Share it with
This article mainly introduces the encryption and decryption functions in PHP and DES encryption and decryption, and analyzes the principles and application methods of common PHP encryption and decryption algorithms encrypt and DES encryption and decryption in the form of examples, it is very practical. if you need it,
650) this.width=650; "title=" Symantec Secure Site Pro SSL Certificate "src=" Http://www.evtrust.com/symantec/images/symantec.png "alt=" Symantec.png "/> Pro SSL certificate , verifying Enterprise Domain name ownership and enterprise identity information, using SGC (server gating) technology to enforce 128-bit to 256-bit encryption, belongs to Enterprise OV Certified Professional Edition (PRO) SSL certificate, even if the user is using a lower version
Chapter 2 Summary of three asymmetric encryption algorithms: asymmetric encryption algorithms
13.1 DH
The cornerstone of asymmetric algorithms
It can only be used for key distribution and cannot be used for data encryption and decryption. Generally, AES is used to encrypt data.
Key Length: 512 ~ Integer multiple of 64 in 1024
Both parties have their ow
iOS code encryption commonly used encryption method, common iOS code encryption commonly used encryption algorithm includes MD5 encryption, AES encryption, BASE64 encryption, three algo
Python-based rsa encryption algorithm, pythonrsa Encryption Algorithm
This example describes the rsa encryption algorithm implemented by Python. We will share this with you for your reference. The details are as follows:
Algorithm process
1. Select two large prime numbers p and q at will. p is not equal to q and N = pq is calculated.2. According to the Euler's fu
Log on to the system with the Python username and password (MD5 encryption and file storage, and the password will be locked after three input errors) and perform the encryption and decryption of the string with the Caesar password,
#-*-Coding: gb2312-*-# log on to the system with the username and password (MD5 encryption and file storage) and perform the operati
Example of one-way hash encryption implemented by PHP and example of encryption implemented by php
This example describes one-way hash encryption implemented by PHP. We will share this with you for your reference. The details are as follows:
1. Encrypted File
2. decrypt the file
PS: if you are interested in encryption
homomorphic Encryption (homomorphic encryption) is a form of encryption that allows people to perform certain algebraic operations on ciphertext to get the result that is still encrypted, and the result of decrypting it is the same as the result of the same operation on the plaintext. In other words, this technology enables people to perform operations such as
Complete example of base64 encryption and decryption implemented by JS, and jsbase64 encryption and decryption
This article describes the base64 encryption and decryption implemented by JS. We will share this with you for your reference. The details are as follows:
Complete code:
For more information about base64 encryption
Simple sha1 encryption function example implemented by PHP and phpsha1 encryption example
This example describes the sha1 encryption function implemented by PHP. We will share this with you for your reference. The details are as follows:
function encryptTokey($data){ $apikey = 'testapikey111'; $ps1 = sha1($apikey . strtolower($data)); $ps1 = strtouppe
label: des style uses the SP data on BS size algorithm 1. symmetric encryption-key encryptionDesIdeaAESFeatures: Public algorithms, low computing workload, fast encryption speed, and high encryption efficiency,Insufficient: insecurePrinciple: in symmetric encryption algorithms, only one key is used. Both parties use th
standard| Encryption | Decrypting this class is my online reference to a few documents summed up, test can be used directly, behind a section of MD5, should be independent into a class, I am lazy, so the test is written to a file, feeling is still full of practical, if there are any confidential documents, Use this thing to deal with, in the future to see when the reverse processing, but you do not forget the password on the right, if you are as lazy
Public key encryption (asymmetric encryption)
New: itccp, http://itccp.com Public key encryption uses a private key that must be kept confidential to unauthorized users and a public key that can be made public to anyone. Both the public key and the private key are connected in mathematics. Data Encrypted with the public key can only be decrypted with the
Luks (Linux unified key setup) provides a standard for Linux hard disk encryption. It not only applies to different Linux Release versions, but also supports multiple users/passwords, because its encryption key is independent of the password, even if the password is lost, we do not need to re-encrypt the entire hard disk, just change the password in time to regain security!
Luks provides a standard disk
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