Re: HMAC with MD2

[Wei Dai]

On Wed, Dec 11, 2002 at 02:26:27PM -0800, John Yang wrote:
> I tried to do
> 
> HMAC<MD2> hmacMD2(keyHere);
> 
> get error C2039: 'BLOCKSIZE' : is not a member of 'MD2'

It's been fixed in version 5.0, but not in 4.2. I'll check the fix into
the 4.2 branch as well. Here's the fix in the mean time:

Index: md2.h
===================================================================
RCS file: /cvsroot/cryptopp/src/md2.h,v
retrieving revision 1.4
diff -c -r1.4 md2.h
*** md2.h       5 Apr 2001 20:35:33 -0000       1.4
--- md2.h       12 Dec 2002 01:27:47 -0000
***************
*** 16,22 ****
        void TruncatedFinal(byte *hash, unsigned int size);
        unsigned int DigestSize() const {return DIGESTSIZE;}

!       enum {DIGESTSIZE = 16};

  private:
        void Transform();
--- 16,22 ----
        void TruncatedFinal(byte *hash, unsigned int size);
        unsigned int DigestSize() const {return DIGESTSIZE;}

!       enum {DIGESTSIZE = 16, BLOCKSIZE = 16};

  private:
        void Transform();