Encode
Encode(s,R,M,p);
Encode(out,R2,M2,(len+1)/2);
Encode(s,R,M,p);
Encode (bits, context->count, 8);
Encode (digest, context->state, 16);
static void Encode(unsigned char *, UINT4 *, unsigned int);
Encode (bits, &context->Nl, 8);
Encode (digest, &context->A, 16);