Added md_process() to MD layer for generic internal access to hash

process functions

Access to process functions is needed to reduce possible timing attacks
on SSL MAC checks. As SSL is set to move to using the dynamic MD layer,
the MD layer needs access to these process functions as well.

library/sha4.c

@@ -152,7 +152,7 @@ void sha4_starts( sha4_context *ctx, int is384 )
     ctx->is384 = is384;
 }
 
-static void sha4_process( sha4_context *ctx, const unsigned char data[128] )
+void sha4_process( sha4_context *ctx, const unsigned char data[128] )
 {
     int i;
     uint64_t temp1, temp2, W[80];