In C++, How to get MD5 hash of a file?
I've the file path. How can I get the MD5 hash of it? Thanks ...
md5
Getting Oracle's MD5 to match PHP's MD5
Hi all, I'm trying to compare an MD5 checksum generated by PHP to one generated by Oracle 10g. However it seems I'm comparing apples to oranges. Here's what I did to test the comparison: //md5 tests //php md5 print md5('testingthemd5function'); print '<br/><br/>'; //oracle md5 $md5query = "select md5hash('testingthemd5fun...
How can I create the hash of a webpage in java?
I need to create the hash of a the html of a webpage (from its URL) using SHA1 or MD5 in java, but I don't know how to do it... can you help me? ...
md5 hash for password string in GWT/GWT-Ext?
Hi everyone, I am currently trying to modify an existing GWT-Ext application, that is using plain text passwords in its MySql database. My plan was to use md5 hashes, as the existing passwords can be easily altered with the MySql function and I was expecting to find an easy solution for the GWT-Ext side as well. But as I found out, jav...
Is it possible to decrypt md5 hashes?
Someone told me that he has seen software systems that would accept MD5 encrypted passwords (through various integrations with other systems), decrypt them, and store them in the systems own database using it's own algorithm. Is that possible? I thought that it wasn't possible (feasible) to decrypt MD5 hashes. I know there are MD5 dic...
C#: How to generate short MD5 code?
When I am encrypting 23 using MD5 encryption I am getting 37693cfc748049e45d87b8c7d8b9aacd this 32-character long string which will always be static for 23. I want the same kind of mechanism but that should generate 18 or less (like: 122ff1e4883358b6) characters long string instead 32. How I can do that in C#, is there any shorter ver...
C# MD5 Hash results not expected result
Hi, I've tried every example I can find on the web but I cannot get my .NET code to produce the same MD5 Hash results from my VB6 app. The VB6 app produces identical results to this site: http://www.functions-online.com/md5.html But I cannot get the same results for the same input in C# (using either the MD5.ComputeHash method or the ...
How Is MD5 generation dependent on file size?
Is there any efficiency analysis of how MD5 dependent on the file size. Is it actually dependent of file size or content of the file. So for i have 500mb file with all blank spaces and a 500mb file with movie in it, would md5 take same time to generate the the hash code? ...
Can I use an already MD5 encoded password in Digest Authentication
I have MD5 hashes of passwords in a database that I want to use against HTTP AUTH DIGEST. But in reading the docs, it looks like the digest hash contains a hash of the username,realm and plaintext password. Is there any way to use the MD5 hash of the password in this situation? ...
Convert binary string to bigint in MySQL?
I am attempting to hash a string to a 64-bit value (bigint) in MySQL. I am aware of the MD5() function, which returns a 128-bit hash as a binary string. I'd be happy to just take the bottom or top 64 bits of this result. However, I cannot figure out how to get from a binary string type to a numeric type of any sort. Any pointers? ...
Why is MD5'ing a UUID not a good idea?
PHP has a uniqid() function which generates a UUID of sorts. In the usage examples, it shows the following: $token = md5(uniqid()); But in the comments, someone says this: Generating an MD5 from a unique ID is naive and reduces much of the value of unique IDs, as well as providing significant (attackable) stricture on the ...
BSD md5 vs GNU md5sum output format?
Any one knows why BSD md5 program produces hash output in this format ... MD5 (checksum.md5) = 9eb7a54d24dbf6a2eb9f7ce7a1853cd0 ... while GNU md5sum produces much more sensible format like this? 9eb7a54d24dbf6a2eb9f7ce7a1853cd0 checksum.md5 As far as I can tell, the md5sum format is much easier to parse and makes more sense. How do...
Cryptography: Decode CRAM-MD5 algorithm
I have an ASP.Net web application where I would like to implement cryptography for password security. I am not using SSL. For that i studied and pick CRAM-MD5 algorithm for password authentication. I have implement javascript cram-md5 algorthim available at http://pajhome.org.uk/crypt/md5/ Here i would like to know that is there anyone...
MD5 hash with salt for keeping password in DB in C#
Could you please advise me some easy algorithm for hashing user password by MD5, but with salt for increasing reliability. Now I have this one: private static string GenerateHash(string value) { var data = System.Text.Encoding.ASCII.GetBytes(value); data = System.Security.Cryptography.MD5.Create().ComputeHash(data); return ...
What are the chances that two messages have the same MD5 digest and the same SHA1 digest?
Given two different messages, A and B (maybe 20-80 characters of text, if size matters at all), what is the probability that the MD5 digest of A is the same as the MD5 digest of B and the SHA1 digest of A is the same as the SHA1 digest of B? That is: (MD5(A) == MD5(B)) && (SHA1(A) == SHA1(B)) Assume no malicious intent, i.e., that th...
Verifying file digests
Say I have 'n' number of files, for each of which I have CRC32, MD5 and SHA1 digests Now these 'n' number of files are actually split files/archives of single large file. When these smaller files are recombined/joined into the larger file, we can compute the digest of this larger file too. My question is : Is there a way to verify whe...
Is there a working md5 plugin or equivalent encryption plugin for jQuery 1.3.2?
I'm storing my passwords on a server, and, using nothing but HTML/JavaScript, I need to be able to take an input password, compute the hash, then compare against what's in my database via Ajax. As I'm using CouchDB, there's actually no server code, which is where I'd normally do such a calculation. Any kind of one way encryption woul...
Protecting executable from being patched
My logic of APT (Anti-Paching Technology) is as follows... 1) Store on the MSSQL server the md5 hash of the executable for protection. 2) Perform an md5 comparison (within my application startup) the hash found on the server, with the executable itself. 3) If comparison fails exit application silently. And all these above before it i...
Calculate hash without having the entire buffer in memory at once
I am doing an operation where I receive some bytes from a component, do some processing, and then send it on to the next component. I need to be able to calculate the hash of all the data I have seen at any given time - and because of data size; I cannot keep it all in a local buffer. How would you calculate the (MD5) hash under these ...
MD5 file processing
Good morning all, I'm working on an MD5 file integrity check tool in C#. How long should it take for a file to be given an MD5 checksum value? For example, if I try to get a 2gb .mpg file, it is taking around 5 mins+ each time. This seems overly long. Am I just being impatient? Below is the code I'm running public string getHash(Str...