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found 184 bytes in public key cypto

This commit is contained in:
schneider 2011-12-22 02:45:08 +01:00
parent 21b1b51a85
commit ee9c41bc82
2 changed files with 11 additions and 13 deletions
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1
firmware/basic/basic.c
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@ -89,7 +89,6 @@ void rbInit() {
//nrf_init();
backlightInit();
font=&Font_7x8;
ECIES_setup();
}
#define WEAK_ALIAS(f) __attribute__ ((weak, alias (#f)));

23
firmware/basic/ecc.c
View File

@ -15,9 +15,17 @@
#include "ecc.h"
#include "random.h"
exp_t base_order;
elem_t poly; /* the reduction polynomial */
elem_t coeff_b, base_x, base_y;
elem_t poly = {0x8, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x000000c9};
//bitstr (poly, "8 00000000 00000000 00000000 00000000 000000c9");
elem_t coeff_b = {0x2, 0x0a601907, 0xb8c953ca, 0x1481eb10, 0x512f7874, 0x4a3205fd};
//bitstr (coeff_b," 2 0a601907 b8c953ca 1481eb10 512f7874 4a3205fd");
elem_t base_x = {0x3, 0xf0eba162, 0x86a2d57e, 0xa0991168, 0xd4994637, 0xe8343e36};
// bitstr_parse(base_x, "3f0eba16286a2d57ea0991168d4994637e8343e36");
elem_t base_y = {0x0, 0xd51fbc6c, 0x71a0094f, 0xa2cdd545, 0xb11c5c0c, 0x797324f1};
// bitstr_parse(base_y, "0d51fbc6c71a0094fa2cdd545b11c5c0c797324f1");
elem_t base_order = {0x4, 0x00000000, 0x00000000, 0x000292fe, 0x77e70c12, 0xa4234c33};
//bitstr_parse(base_order, "40000000000000000000292fe77e70c12a4234c33");
static unsigned char rnd1()
{
@ -506,15 +514,6 @@ int ECIES_decryptkeygen(uint8_t *rx, uint8_t *ry,
return 0;
}
void ECIES_setup(void)
{
bitstr_parse(poly, "800000000000000000000000000000000000000c9");
bitstr_parse(coeff_b, "20a601907b8c953ca1481eb10512f78744a3205fd");
bitstr_parse(base_x, "3f0eba16286a2d57ea0991168d4994637e8343e36");
bitstr_parse(base_y, "0d51fbc6c71a0094fa2cdd545b11c5c0c797324f1");
bitstr_parse(base_order, "40000000000000000000292fe77e70c12a4234c33");
}
#define ECIES_OVERHEAD (8 * NUMWORDS + 8)
/* ECIES encryption; the resulting cipher text message will be