Hi,
I'm new to this, but I hope this is correct. I think that once you have
created your hash filter you can just use the put and get methods to send
binary data.
md5Filter->Put( your data );
md5Filter->MessageEnd();
if (mFilter->AnyRetrievable())
{
int outLength = md5Filter->MaxRetrievable();
char* out = new char[outLength];
md5Filter->Get((unsigned char*)out, outLength); // The hash value!
}
Give or take a bit of error checking/memory management :)
There are also existing sinks for strings and buffers, so you wouldn't have
to write your own if you wanted to go that route.
>-- Original Message --
>Date: Thu, 01 May 2003 13:33:24 +1000
>Subject: Simple question...
>From: Matthew Smith <[EMAIL PROTECTED]>
>To: <[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED]
>
>
>Hello,
>
>I need to hash some data (char *) and would like to get the hash back as
>a
>char *, so far I've come up with (based on the example with the source):
>
>void md5Data(const char *data)
>{
> MD5 md5;
> HashFilter md5Filter(md5);
> auto_ptr<ChannelSwitch> channelSwitch(new ChannelSwitch);
> channelSwitch->AddDefaultRoute(md5Filter);
> StringSource(data, true, channelSwitch.release());
>
> HexEncoder encoder(new FileSink(cout), false);
> cout << "\nMD5: ";
> md5Filter.TransferTo(encoder);
> cout << "\n";
>}
>
>Now, my (limited) understanding of crypto++ is this:
>
>To get the data as a string (rather then stout), I would need to implement
>a
>class that inherits from Sink, then get the data out of it myself??
>
>I would think that this sort of thing is quite common, is there a better
>way
>of doing it, or something in the lib I am missing???
>
>Cheers
>
>Matt Smith
>
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