Your example doesn't sound like C code at all, can you show your program?
There is indeed a library you can include, see 'man md5'. You use it by feeding MD5_Update arrays of data, which you can read from any source.
It reads only from stdin in this example. It outputs the same hash as the commandline md5sum command for the same data. You must link the program with -lssl.
Note that MD5 has been cracked; people can generate disparate strings with the same MD5 hash pretty much on command. For simple checksums this may not be important, for things where security is important MD5 is no good, SHA1 is better.
Hi all,
I am kinda puzzled. When and Why do we use md5sum? I've read man pages for mp5sum, but didn't get anything out of it. Please, can someone explain this to me in couple of words.
Thank you all. (1 Reply)
i downloaded a Linux distribution from a FTP site today, and i found there is a file named MD5SUM in the same directory, with the following contents:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
c9a4d963a49e384e10dec9c2bd49ad73 valhalla-SRPMS-disc1.iso
41b03d068e84d2a17147aa27e704f79b ... (1 Reply)
Tim Bass
Thu, 15 Nov 2007 23:55:07 +0000
*I predict we may experience less*debates*on the use of the term “event cloud”*related to*CEP in the future, now that both IBM and Google* have made announcements about “cloud computing” and “computing cloud”, IBM Turning Data Centers Into ‘Computing... (0 Replies)
hi All:
i write a adduser script in perl , but I don't know how to deal with the password , for it stored as md5. and i don't use the shell
command passwd. give me some advice...thanks (1 Reply)
something strange is that i find the md5sum command in different linux generate different result, for example, i have tried the same file in CentOS and Rhel, The md5 results are different, it is quite headache, who know the tricks? (3 Replies)
Hello,
I need to download multiple files from an FTP server but occasionally they arrive in error so I need to perform an integrity check. I've been attempting to write a bash script that does the following:
Downloads all files including those in sub directories
Perform md5sum using... (4 Replies)
Hi all,
I have to verify the integrity of a ISO image that is downloaded periodically on my PC. In order to do that, I've written a bash script that use the command md5sum with the aim to match the generated code with the default one created with the SIO image. The problem is that, if I start... (1 Reply)
Hello,
First of all I want to apologize because i'm not a admin or coder and maybe all my efforts to write only this small script in my life would need one week full time reading man pages and forums but...
I don't have the money to offer me to get this time and the script I want to do seems... (5 Replies)
I am getting No such file or directory if my variable contains white spaces... Is there a way to fix this?
This works
x="1.md5"
md5sum -c "$x"
This, does not
x="23\ 5\ 6\ 7\ 8\ 9\ 10.md5"
md5sum -c "$x"
md5sum: '23\ 5\ 6\ 7\ 8\ 9\ 10.md5': No such file or directory
How do I fix... (1 Reply)