md5

问题 I've been looking for a way to hash a given string in C# that uses a predetermined key. On my adventures through the internet trying to find an example i have seen lots of MD5CryptoServiceProvider examples which seem to use a default key for the machine, but none of them that apply a specific key. I need to have a specific key to encode data as to synchronize it to someone else's server. I hand them a hashed string and an ID number and they use that analyze the data and return a similar set

问题 I am downloading a file from an http server and have to take into account that at a random point during download, the network connection fails, or the computer crashes. If that happens, I start a resume download using the HTTP "Range:" header. Since the download must be validated against an MD5 hash, there seems to be no way for me to use the network inputstream after a resume to get the correct hash, since java.security.MessageDigest doesn't seem to have method that basically says "start

问题 Good evening all, I've been working on an MD5 tool in C# that takes a file, goes through my Hasher class and pops the result in a database, along with the filename and directory. The issue I'm having is that each time I run the test, the MD5 result for the same identical file i.e. unchanged in any way is completely different. Below is the code I use HashAlgorithm hmacMd5 = new HMACMD5(); byte[] hash; try { using (Stream fileStream = new FileStream(fileLocation, FileMode.Open)) { using (Stream

问题 I am trying to generate MD5 hash for an string "Hello World" using the original/untouched md5.h and md5c.c from http://www.arp.harvard.edu. But my result differs from all md5 online tools i have tested. Whats wrong this this code? Thank you. #include <stdio.h> #include <stdlib.h> #include <string.h> #include "md5.h" void MD5hash(unsigned char *data, unsigned int dataLen, unsigned char *digest) { MD5_CTX c; MD5Init(&c); MD5Update(&c, data, dataLen); MD5Final(digest, &c); } int main(int argc,

问题 Please read the updates too since my "actual confusion" is in there. It has been quiet sometime, since Joomla! started supporting the bcrypt hashing algorithm, alongside the md5 + salt that has been the defacto since Joomla! 1.5. Now my question is "As an end user, what benefits do I get if I start using Bcrypt right away, In comparison to the current algorithm viz. MD5 + salt ? Does it even make any difference for a normal blog with a few hundred visitors daily?" Update:- Also I read

问题 I have 7 files that I'm generating MD5 hashes for. The hashes are used to ensure that a remote copy of the data store is identical to the local copy. Unfortunately, the link between these two copies of the data is mind numbingly slow. Changes to the data are very rare but I have a requirement that the data be synchronized at all times (or as soon as possible). Rather than passing 7 different MD5 hashes across my (extremely slow) communications link, I'd like to generate the hash for each file

问题 I am currently working on uploading media on Azure Blob storage. All is working fine except when i try to macth the MD5 hash of uploaded media with the local file (exactly same one which was uploaded). Local file returns a byte array where are blob.Properties.ContentMD5 returns a string and both do not match. Local MD5 hash: sÔ(F¦‚"“Db~[N blob.Properties.ContentMD5: c9QoHkamgiKTRANifltOGQ== Any possible way to match both these? 回答1: Here is a good article on how to calculate and check Blob

问题 I am working on a Windows phone 7 application. I am using this implementation for MD5 hashing in silverlight. I am using this code - protected string GetMD5Hash(string input) { byte[] bs = System.Text.Encoding.UTF8.GetBytes(input); MD5Managed md5 = new MD5Managed(); byte[] hash = md5.ComputeHash(bs); StringBuilder sb = new StringBuilder(); foreach (byte b in bs) { sb.Append(b.ToString("x2").ToLower()); } return sb.ToString(); } But, I am not getting the correct MD5 hash for the input I

问题 Everyone is shooting down MD5 these days for its issues in the context of storing passwords. But what about uses where I just want to add a layer of authentication to something that will likely be used once? This is just a hypothetical example, but let's say I have a feature to allow a user to reset their password. I email the user a link that they can click to set a new (randomly-generated) password. My current thinking is that I'll generate an MD5 hash, using a private salt value, and a

问题 I'm attempting to use the Microsoft crypto APIs to compute an MD5 hash, but I'm getting incorrect hashes: #include <windows.h> #include <stdio.h> #include <wincrypt.h> char* HashMD5(char* data, DWORD *result) { DWORD dwStatus = 0; DWORD cbHash = 16; int i = 0; HCRYPTPROV cryptProv; HCRYPTHASH cryptHash; BYTE hash[16]; char *hex = "01234567879abcdef"; char *strHash = "00000000000000000000000000000000"; if(!CryptAcquireContext(&cryptProv, NULL, MS_DEF_PROV, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT))