Samir Faci wrote:
I'm trying to use crypto++ to generate an md5sum of a file, and it
works .. as in it provides me with a hash for the file. My one point
of concern is that an md5sum <file> doesn't give me the same hash.
Your code works fine for me using RHEL 5.4 x86_64 and Crypto++ 5.6.0.
[u...@host HelloWorld]$ dd if=/dev/urandom of=test.rand bs=1M count=100
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 22.2437 seconds, 4.7 MB/s
[u...@host HelloWorld]$ ./+HelloWorld
MD5: 5a 7b e5 40 e7 e3 bd b8 57 89 04 4d d9 26 32 a5
[u...@host HelloWorld]$ md5sum test.rand
5a7be540e7e3bdb85789044dd92632a5 test.rand
A shorter implementation using Crypto++ would look like this:
#include <crypto++/md5.h>
#include <crypto++/hex.h>
#include <crypto++/files.h>
int main()
{
std::string result;
CryptoPP::Weak::MD5 hash;
CryptoPP::FileSource("test.txt",true,new
CryptoPP::HashFilter(hash,new CryptoPP::HexEncoder(new
CryptoPP::StringSink(result),false)));
std::cout << result << std::endl;
return 0;
}
Regards, Peter.
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