md5

问题 Why can't you just reverse the algorithm like you could reverse a math function? How is it possible to make an algorithm that isn't reversible? And if you use a rainbow table, what makes using a salt impossible to crack it? If you are making a rainbow table with brute force to generate it, then it invents each plaintext value possible (to a length), which would end up including the salt for each possible password and each possible salt (the salt and password/text would just come together as a

问题 I am using a normal php/mysql insert query and use md5 to encrypt the password This is the INSERT query: $sql = mysql_query("INSERT INTO user (username, password, role, approved) values ('".$username."', '".md5($password)."', 'user', '0')"); And this is my SELECT query which I use for my login check: $sql = "SELECT id, username, password, role, approved FROM user WHERE username = '".$username."' AND password = '".md5($password)."'"; $result = mysql_query($sql); But when I check the inserted

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed last year . So, there's this website (http://md5decrypter.co.uk) which, given an md5 hash, will attempt to return the original string. Is there an API or has someone made a PHP class to work with it? I can't find one... Before, you ask, let me assure you that I have no malicious intent. Thank you in advance. 回答1: Even so the

问题 The common implementation for MD5 is given by RFC1321. Where the MD5Update function receive a pointer to chars . My architecture, a SHARC ADSP-21371, is not byte adressable which means: sizeof(int32_t) == 1 Thus I cannot really use this algorithm as is. I need to wrap some complexity to unpack each int32_t data. Is there an alternative solution that I can use out of the box and if possible compatible C99 or C11? 回答1: I finally implemented MD5 for a octet-addressable architecture, here is for

问题 I have a very large table in MySQL. I'm using a CHAR(32) field which contains an MD5 as a string of course. I'm running into an issue where I need to convert this to a decimal value using MySQL. A third party tool runs the query so writing code to do this isn't really an option. MySQL does support storing hex values natively and converting them to integers. But it gets hung up converting it from a string. Here's what I've tried so far (md5_key is the name of my column) First I just tried the

问题 I have downloaded the latest release version of Openssl from http://www.openssl.org/source/ I would like to use it in Visual Studio 2012, especially getting the md5/sha-1 hash of a file, but I can not include / setup the environment with the openssl library. To be honest I got confused what to include, and where, however I have read the README-s. I'm getting this error. Error 1 error LNK2019: unresolved external symbol _MD5_Init referenced in function _main So my question is, I have

问题 I have downloaded the latest release version of Openssl from http://www.openssl.org/source/ I would like to use it in Visual Studio 2012, especially getting the md5/sha-1 hash of a file, but I can not include / setup the environment with the openssl library. To be honest I got confused what to include, and where, however I have read the README-s. I'm getting this error. Error 1 error LNK2019: unresolved external symbol _MD5_Init referenced in function _main So my question is, I have

问题 I know very little about encryption/hashing. I have to hash an encryption key. The example in Java is like this... String encryptionKey = "test"; MessageDigest messageDigest = MessageDigest.getInstance("MD5"); messageDigest.update(encryptionKey.getBytes("UTF-8"), 0, encryptionKey.length()); byte[] encryptionKeyBytes = messageDigest.digest(); Now correct me if I'm wrong, but the above code hashes the string with the MD5 algorithm. And I want the same result when I hash the same string in C#.

问题 I am looking to get the MD5 hash for a tar.gz GitHub release from here: https://github.com/jbeder/yaml-cpp/releases Would like to use it in my CMake. Does anyone know where I can get it? I could not find much of a solution through Google. 回答1: If GitHub wanted to provide this information, I would expect it to be provided in the API. The GitHub API doesn't currently provide this information. If they did, I would expect it to be here: https://api.github.com/repos/jbeder/yaml-cpp/releases/latest

问题 I am looking to get the MD5 hash for a tar.gz GitHub release from here: https://github.com/jbeder/yaml-cpp/releases Would like to use it in my CMake. Does anyone know where I can get it? I could not find much of a solution through Google. 回答1: If GitHub wanted to provide this information, I would expect it to be provided in the API. The GitHub API doesn't currently provide this information. If they did, I would expect it to be here: https://api.github.com/repos/jbeder/yaml-cpp/releases/latest