Introduction
This module computes an HMAC SHA1 digest as specified by RFC 2104.
It is believed that HMAC SHA1 is stronger than SHA1.

Installing
This module requires the SHA module prior to installation.  Then do
the usual "perl Makefile.PL ; make ; make test ; make install".

Example
print HMAC::SHA1::hexhash("what do ya want for nothing?", "Jefe"),
      " should be effcdf6ae5eb2fa2d27416d5f184df9c259a7c79\n";

See Also
RFC 2104        - HMAC specification.
RFC 2202        - HMAC test cases.
FIPS PUB 180-1  - SHA specification.

Cheers,
Clinton Wong
clintdw@netcom.com
September 09, 1998