8-bit modular exponentiation code?

[Major Variola (ret)]

At 07:30 AM 5/24/03 +0100, Adam Back wrote:
>Colin Plumb's crypto library bnlib supports multiple word size I
>believe.
>On Fri, May 23, 2003 at 11:36:58AM -0700, Major Variola (ret.) wrote:
>> Anyone know of any open-source modexp code for 8-bit cpus?

Thank you for your response, however (for the record) that code requires

at least a 16bit CPU.  From bnlib.doc (an amusing read, BTW):

It is written in C, and should compile on any platform with an ANSI C
compiler and 16 and 32-bit unsigned data types

"Small" is defined as less than 65536, the minimum 16-bit word size
supported by the library.