def testFIPS180_1_Appendix_C(self):
        """ APPENDIX C.   A THIRD SAMPLE MESSAGE AND ITS MESSAGE DIGEST
        Let the message be the binary-coded form of the ASCII string which consists
        of 1,000,000 repetitions of "a". """
        hashAlg = SHA1()
        message        = 1000000*'a'
        message_digest = 0x34AA973CL, 0xD4C4DAA4L, 0xF61EEB2BL, 0xDBAD2731L, 0x6534016FL
        md_string      = _toBString(message_digest)
        assert( hashAlg(message) == md_string ), 'FIPS180 Appendix C test Failed'