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Remember before the test soft test and recent exams, always appear the problem of encryption algorithm, summed up here.Summary of symmetric and asymmetric and reversible non-reversible cryptographic algorithms:According to the different key types, modern cryptography can be divided into two types: symmetric encryption
For most password encryption, we can use MD5, SHA1 and other methods. Can effectively prevent data disclosure, but these methods apply only to data encryption that does not need to be restored. For information that needs to be restored, a reversible encryption decryption algorithm is required, and the following set of
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 fu
$encrypt = Encrypt ($data, $key);$decrypt = Decrypt ($encrypt, $key);echo $encrypt, "\ n", $decrypt; The above output will look similar to the following results:Copy the Code code as follows:Gnicsozzg+hns9zcfea7sefnghxfPHP Encryption and decryption algorithm As can be seen from the above results, this is a set of reversible encryption and decryption algorithms th
I. Summary Namespaces: System.Security.Cryptography.TripleDES Class Simple description: Represents the base class for triple data Encryption standard algorithms, all implementations of TripleDES must derive from this base class. is inherited from the SymmetricAlgorithm class. TripleDES uses the DES algorithm for three consecutive iterations. It can use two or three 56-bit keys. Purpose of Use: Secure encryption
The encryption algorithm is as follows: Copy Code code as follows: function Encrypt ($data, $key) { $key = MD5 ($key); $x = 0; $len = strlen ($data); $l = strlen ($key); for ($i = 0; $i { if ($x = = $l) { $x = 0; } $char. = $key {$x}; $x + +; } for ($i = 0; $i { $str. = Chr (Ord ($data {$i}) + (Ord ($char {$i}))% 256); } Return Base64_encode ($STR); } The decryption algorithm is as follows: Copy Code code as fol
I. Summary Namespace: System. Security. Cryptography. TripleDES class Simple Description: it indicates the base class of the Triple Data Encryption Standard algorithm. All implementations of TripleDES must be derived from this base class. Is inherited from the SymmetricAlgorithm class. TripleDES uses three consecutive iterations of the DES algorithm. It can use two or three 56-bit keys. Purpose: secure encryption
I. Summary Namespace: system. Security. cryptography. tripledes class Simple Description: it indicates the base class of the Triple Data Encryption Standard algorithm. All implementations of tripledes must be derived from this base class. Is inherited from the symmetricalgorithm class. Tripledes uses three consecutive iterations of the DES algorithm. It can use two or three 56-bit keys. Purpose: secure encryption
This article mainly introduces php's method for implementing reversible encryption, and draws on the discuz's encryption principle to implement the function of Reversible Encryption Through keys. It has some reference value. For more information, see This article mainly intr
Find a reversible string encryption algorithm and a reversible string encryption algorithm, similar to base64 encryption, but this encrypted string is too long, find a reversible string encryp
Find a reversible string encryption algorithm and a reversible string encryption algorithm, similar to base64 encryption, but this encrypted string is too long, find a reversible string encryp
Describes the reversible encryption algorithms that PHP and C # can share ,. PHP and C # can share a detailed description of reversible encryption algorithms. in some projects, it is required to generate encryption in php, and then decrypt the password received in asp.net, t
PHP and asp. netC # reversible encryption algorithms that can be shared. Because of work requirements, we need to generate encryption in php and then decrypt the password accepted in asp.net. below I find a PHP and asp. netC # A common reversible encryption algorithm. you ne
This article mainly introduces a set of PHP reversible encryption and decryption algorithm instance code. if you need it, you can refer to the md5, sha1, and other methods for most password encryption. This can effectively prevent data leaks, but these methods only apply to data encryption that does not require restora
Mobile Internet applications today generally use a user registration mechanism to enhance user stickiness.So for safety design. How should the user's password be transmitted? How to save in the cloud? I've been thinking about this for a long time. Summarize some of the following ideas. Mainly related to the use of non-reversible encryption principle.If the user's registration/login process is carried out in
Share the AES reversible encryption algorithm you saw in the previous period.In addition to the common encryption methods such as MD5, if you want to use some more subtle encryption, you can use AES's RijndaelManaged encryption algorithm.About
A set of PHP reversible encryption and decryption algorithm instance code. 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 encrypti
PHP reversible encryption and decryption algorithm program code. Our commonly used md5 algorithm is irreversible theoretically, but there is a powerful way to calculate the md5 algorithm, but it only takes time based on the complexity, however, sometimes our common md5 algorithms are irreversible in theory, but there is a powerful way to calculate the md5, but the time needed for complexity is different, bu
The Mcrypt reversible encryption algorithm in PHP. What is the reversible Mcrypt encryption algorithm in PHP? Php Tutorial $ tdmcrypt_module_open (MCRYPT_DES, ecb,); use the MCRYPT_DES algorithm, ecb mode $ ivmcrypt_create_iv (mcrypt_enc_get_iv_size ($ t Mcrypt reversible
This article mainly introduces a set of PHP reversible encryption and decryption algorithm instance code. if you need it, you can refer to the md5, sha1, and other methods for most password encryption. This can effectively prevent data leaks, but these methods only apply to data encryption that does not require restora
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