Chien-Chung, Chung - Professional Profile

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Hi there,

Really pleased I found your code as is the sort of thing I am looking for.

I am just trying to run it first and since my programming knowledge is very limited I have a few questions!!

For the test data you suggested:

#include "HMAC_SHA1.h"
 
BYTE Key[20] ;
BYTE digest[20] ; 

unsigned char *test = "Hi There" ; 
memset(Key, 20, 0x0b) ;
CHMAC_SHA1 HMAC_SHA1 ;
HMAC_SHA1.HMAC_SHA1(test, strlen(test), Key, sizeof(Key), digest) ;
 
// Check with digest equal to 0xb617318655057264e28bc0b6fb378c8ef146be00
// or not

...for this part above, is it just added into an already existing source code file of the program that will be run? At the moment I have linked them together in a makefile:

CC=g++

HMAC_SHA1++:test.o HMAC_SHA1.o	SHA1.o

	$(CC)	test.o	HMAC_SHA1.o	SHA1.o	-o  HMAC_SHA1++

test.o: test.cpp HMAC_SHA1.h

	$(CC) -c test.cpp

SHA1.o: SHA1.cpp SHA1.h

	$(CC) -c SHA1.cpp

HMAC_SHA1.o: HMAC_SHA1.cpp HMAC_SHA1.h

	$(CC) -c HMAC_SHA1.cpp

..where the file test.cpp is exactly the contents of test code you suggested above. It is giving some errors about converting between signed/unsigned ints and chars etc...so just wondering how to use that test code...does it need to be inside some sort of main() function etc to work?

...after that I am hoping to somehow do the receiver processing where the receiver calculates the digest and then compares into to the senders digest and produces an error if they do not match. I am programming in fields for the security extension header of a ULE subnetwork data unit.

Thanks alot for any help!