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elliptic curve cryptography on 8051

Hey guys, I am working on making Elliptic Curve Cryptography El-Gamal in 8051 MCU using Keil uvision 4. I want to make it 128 bit, so I need to use GMP library. However, to use GMP I usually download it in mingw-get-setup first, so I think it won't run if I just copy the gmp.h to my project in Keil.

My questions are :

1. how can I use gmp in 8051 using Keil?

2. Or should I compile it first in gcc, then just download the hex file to 8051? How to program the register in gcc?

Thanks for your attention :D

Best regards

Parents

0 ImPer Westermark over 11 years ago in reply to Ken Tut

Anyone who plans to implement any big number library would see it as a trivial exercise to also implement an assign function that can work on an ASCII string of arbitrary number base.

So:

void bignum_set(bignum_t *num,uint8_t base,const char *value);
void bignum_set_raw(bignum_t *num,uint8_t value,size_t bytes);

uint8_t bignum_data[] = {0xf3,0x12,0x73,0x00,0x03,0x4a };

bignum_set(num1,4,"033303210021111111130203302");
bignum_set(num2,16,"fa3032faccca");
bignum_set(num3,2,"011110100100001110111010110010011010101001010101101000101010");
bignum_set_raw(num4,bignum_data,sizeof(bignum_data));

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0 ImPer Westermark over 11 years ago in reply to Ken Tut

Anyone who plans to implement any big number library would see it as a trivial exercise to also implement an assign function that can work on an ASCII string of arbitrary number base.

So:

void bignum_set(bignum_t *num,uint8_t base,const char *value);
void bignum_set_raw(bignum_t *num,uint8_t value,size_t bytes);

uint8_t bignum_data[] = {0xf3,0x12,0x73,0x00,0x03,0x4a };

bignum_set(num1,4,"033303210021111111130203302");
bignum_set(num2,16,"fa3032faccca");
bignum_set(num3,2,"011110100100001110111010110010011010101001010101101000101010");
bignum_set_raw(num4,bignum_data,sizeof(bignum_data));

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