ColdFire/68K Microcontrollers and ProcessorsのトピックRe: Big Integer Math https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Big-Integer-Math/m-p/197761#M8894 <HTML><HEAD></HEAD><BODY><P>Hi, what you need is called an arbitrary precision arithmetic library.&nbsp;Some time ago I coded a prototype of the DSA Digital Signature algorythm using a 16 bit freescale part, I used the MIRACL library at that time,and after some tweaking it worked great. Maybe there is something more specific for embedded processors today, but I dont know.</P><P>&nbsp;</P><P>Elio</P><P>&nbsp;</P><P>&nbsp;</P></BODY></HTML> Wed, 05 May 2010 16:32:13 GMT ElioMussini 2010-05-05T16:32:13Z Big Integer Math https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Big-Integer-Math/m-p/197759#M8892 <HTML><HEAD></HEAD><BODY><P>I am doing some RSA stuff and was looking for a Big Integer math library for use in the JM128.&nbsp; Please let me know if you can point me in the right direction.</P><P>&nbsp;</P><P>Thanks!</P></BODY></HTML> Wed, 05 May 2010 07:25:50 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Big-Integer-Math/m-p/197759#M8892 lolachampcar 2010-05-05T07:25:50Z Re: Big Integer Math https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Big-Integer-Math/m-p/197760#M8893 <HTML><HEAD></HEAD><BODY><P>How big is big? 64bits long long is supported natively in CW for MCUs when&nbsp;targeting Coldfire V1. Long long is 32bits wide targeting&nbsp;S08.</P></BODY></HTML> Wed, 05 May 2010 13:10:18 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Big-Integer-Math/m-p/197760#M8893 kef 2010-05-05T13:10:18Z Re: Big Integer Math https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Big-Integer-Math/m-p/197761#M8894 <HTML><HEAD></HEAD><BODY><P>Hi, what you need is called an arbitrary precision arithmetic library.&nbsp;Some time ago I coded a prototype of the DSA Digital Signature algorythm using a 16 bit freescale part, I used the MIRACL library at that time,and after some tweaking it worked great. Maybe there is something more specific for embedded processors today, but I dont know.</P><P>&nbsp;</P><P>Elio</P><P>&nbsp;</P><P>&nbsp;</P></BODY></HTML> Wed, 05 May 2010 16:32:13 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Big-Integer-Math/m-p/197761#M8894 ElioMussini 2010-05-05T16:32:13Z Re: Big Integer Math https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Big-Integer-Math/m-p/197762#M8895 <HTML><HEAD></HEAD><BODY><P>I would have to go back and check but it is my divide with remainder that is giving me problems and it works on 128 byte inptus (yes, BYTES).</P></BODY></HTML> Wed, 05 May 2010 17:34:18 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/Big-Integer-Math/m-p/197762#M8895 lolachampcar 2010-05-05T17:34:18Z