diff --git a/bigint/bigint.c b/bigint/bigint.c
new file mode 100644
index 0000000..fb2f524
--- /dev/null
+++ b/bigint/bigint.c
@@ -0,0 +1,573 @@
+/* bigint.c */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 Daniel Otte (daniel.otte@rub.de)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+*/
+/**
+ * \file bigint.c
+ * \author Daniel Otte
+ * \date 2010-02-22
+ *
+ * \license GPLv3 or later
+ *
+ */
+
+
+#include "bigint.h"
+#include
+
+#include "bigint_io.h"
+#include "cli.h"
+
+#ifndef MAX
+ #define MAX(a,b) (((a)>(b))?(a):(b))
+#endif
+
+#ifndef MIN
+ #define MIN(a,b) (((a)<(b))?(a):(b))
+#endif
+
+#define SET_FBS(a, v) do{(a)->info &=0xF8; (a)->info |= (v);}while(0)
+#define GET_FBS(a) ((a)->info&BIGINT_FBS_MASK)
+#define SET_NEG(a) (a)->info |= BIGINT_NEG_MASK
+#define SET_POS(a) (a)->info &= ~BIGINT_NEG_MASK
+#define XCHG(a,b) do{(a)^=(b); (b)^=(a); (a)^=(b);}while(0)
+#define XCHG_PTR(a,b) do{ a = (void*)(((uint16_t)(a)) ^ ((uint16_t)(b))); \
+ b = (void*)(((uint16_t)(a)) ^ ((uint16_t)(b))); \
+ a = (void*)(((uint16_t)(a)) ^ ((uint16_t)(b)));}while(0)
+
+#define GET_SIGN(a) ((a)->info&BIGINT_NEG_MASK)
+
+/******************************************************************************/
+void bigint_adjust(bigint_t* a){
+ while(a->length_B!=0 && a->wordv[a->length_B-1]==0){
+ a->length_B--;
+ }
+ if(a->length_B==0){
+ a->info=0;
+ return;
+ }
+ uint8_t t;
+ uint8_t i = 0x07;
+ t = a->wordv[a->length_B-1];
+ while((t&0x80)==0 && i){
+ t<<=1;
+ i--;
+ }
+ SET_FBS(a, i);
+}
+
+/******************************************************************************/
+
+void bigint_copy(bigint_t* dest, const bigint_t* src){
+ memcpy(dest->wordv, src->wordv, src->length_B);
+ dest->length_B = src->length_B;
+ dest->info = src->info;
+}
+
+/******************************************************************************/
+
+/* this should be implemented in assembly */
+/*
+void bigint_add_u(bigint_t* dest, const bigint_t* a, const bigint_t* b){
+ uint16_t t=0, i;
+ if(a->length_B < b->length_B){
+ XCHG_PTR(a,b);
+ }
+ for(i=0; ilength_B; ++i){
+ t = a->wordv[i] + b->wordv[i] + t;
+ dest->wordv[i] = (uint8_t)t;
+ t>>=8;
+ }
+ for(; ilength_B; ++i){
+ t = a->wordv[i] + t;
+ dest->wordv[i] = (uint8_t)t;
+ t>>=8;
+ }
+ dest->wordv[i++] = t;
+ dest->length_B = i;
+ bigint_adjust(dest);
+}
+*/
+/******************************************************************************/
+
+/* this should be implemented in assembly */
+void bigint_add_scale_u(bigint_t* dest, const bigint_t* a, uint16_t scale){
+ uint16_t i,j=0;
+ uint16_t t=0;
+ if(scale>dest->length_B)
+ memset(dest->wordv+dest->length_B, 0, scale-dest->length_B);
+ for(i=scale; ilength_B+scale; ++i,++j){
+ t = a->wordv[j] + t;
+ if(dest->length_B>i){
+ t += dest->wordv[i];
+ }
+ dest->wordv[i] = (uint8_t)t;
+ t>>=8;
+ }
+ while(t){
+ if(dest->length_B>i){
+ t = dest->wordv[i] + t;
+ }
+ dest->wordv[i] = (uint8_t)t;
+ t>>=8;
+ ++i;
+ }
+ if(dest->length_B < i){
+ dest->length_B = i;
+ }
+ bigint_adjust(dest);
+}
+
+/******************************************************************************/
+
+/* this should be implemented in assembly */
+void bigint_sub_u(bigint_t* dest, const bigint_t* a, const bigint_t* b){
+ int8_t borrow=0;
+ int8_t r;
+ int16_t t;
+ uint16_t i, min, max;
+ min = MIN(a->length_B, b->length_B);
+ max = MAX(a->length_B, b->length_B);
+ r = bigint_cmp_u(a,b);
+ if(r==0){
+ dest->length_B = 0;
+ dest->wordv[0] = 0;
+ bigint_adjust(dest);
+ return;
+ }
+ if(b->length_B==0){
+ dest->length_B = a->length_B;
+ memcpy(dest->wordv, a->wordv, a->length_B);
+ dest->info = a->info;
+ SET_POS(dest);
+ return;
+ }
+ if(a->length_B==0){
+ dest->length_B = b->length_B;
+ memcpy(dest->wordv, b->wordv, b->length_B);
+ dest->info = b->info;
+ SET_NEG(dest);
+ return;
+ }
+ if(r<0){
+ for(i=0; iwordv[i] - b->wordv[i] - borrow;
+ if(t<1){
+ borrow = 0;
+ dest->wordv[i]=(uint8_t)(-t);
+ }else{
+ borrow = -1;
+ dest->wordv[i]=(uint8_t)(-t);
+ }
+ }
+ for(;iwordv[i] + borrow;
+ if(t<1){
+ borrow = 0;
+ dest->wordv[i]=(uint8_t)t;
+ }else{
+ borrow = -1;
+ dest->wordv[i]=(uint8_t)t;
+ }
+ }
+ SET_NEG(dest);
+ dest->length_B = i;
+ bigint_adjust(dest);
+ }else{
+ for(i=0; iwordv[i] - b->wordv[i] - borrow;
+ if(t<0){
+ borrow = 1;
+ dest->wordv[i]=(uint8_t)t;
+ }else{
+ borrow = 0;
+ dest->wordv[i]=(uint8_t)t;
+ }
+ }
+ for(;iwordv[i] - borrow;
+ if(t<0){
+ borrow = 1;
+ dest->wordv[i]=(uint8_t)t;
+ }else{
+ borrow = 0;
+ dest->wordv[i]=(uint8_t)t;
+ }
+
+ }
+ SET_POS(dest);
+ dest->length_B = i;
+ bigint_adjust(dest);
+ }
+}
+
+/******************************************************************************/
+
+int8_t bigint_cmp_u(const bigint_t* a, const bigint_t* b){
+ if(a->length_B > b->length_B){
+ return 1;
+ }
+ if(a->length_B < b->length_B){
+ return -1;
+ }
+ if(GET_FBS(a) > GET_FBS(b)){
+ return 1;
+ }
+ if(GET_FBS(a) < GET_FBS(b)){
+ return -1;
+ }
+ if(a->length_B==0){
+ return 0;
+ }
+ uint16_t i;
+ i = a->length_B-1;
+ do{
+ if(a->wordv[i]!=b->wordv[i]){
+ if(a->wordv[i]>b->wordv[i]){
+ return 1;
+ }else{
+ return -1;
+ }
+ }
+ }while(i--);
+ return 0;
+}
+
+/******************************************************************************/
+
+void bigint_add_s(bigint_t* dest, const bigint_t* a, const bigint_t* b){
+ uint8_t s;
+ s = GET_SIGN(a)?2:0;
+ s |= GET_SIGN(b)?1:0;
+ switch(s){
+ case 0: /* both positive */
+ bigint_add_u(dest, a,b);
+ SET_POS(dest);
+ break;
+ case 1: /* a positive, b negative */
+ bigint_sub_u(dest, a, b);
+ break;
+ case 2: /* a negative, b positive */
+ bigint_sub_u(dest, b, a);
+ break;
+ case 3: /* both negative */
+ bigint_add_u(dest, a, b);
+ SET_NEG(dest);
+ break;
+ default: /* how can this happen?*/
+ break;
+ }
+}
+
+/******************************************************************************/
+
+void bigint_sub_s(bigint_t* dest, const bigint_t* a, const bigint_t* b){
+ uint8_t s;
+ s = GET_SIGN(a)?2:0;
+ s |= GET_SIGN(b)?1:0;
+ switch(s){
+ case 0: /* both positive */
+ bigint_sub_u(dest, a,b);
+ break;
+ case 1: /* a positive, b negative */
+ bigint_add_u(dest, a, b);
+ SET_POS(dest);
+ break;
+ case 2: /* a negative, b positive */
+ bigint_add_u(dest, a, b);
+ SET_NEG(dest);
+ break;
+ case 3: /* both negative */
+ bigint_sub_u(dest, b, a);
+ break;
+ default: /* how can this happen?*/
+ break;
+ }
+
+}
+
+/******************************************************************************/
+
+int8_t bigint_cmp_s(const bigint_t* a, const bigint_t* b){
+ uint8_t s;
+ s = GET_SIGN(a)?2:0;
+ s |= GET_SIGN(b)?1:0;
+ switch(s){
+ case 0: /* both positive */
+ return bigint_cmp_u(a, b);
+ break;
+ case 1: /* a positive, b negative */
+ return 1;
+ break;
+ case 2: /* a negative, b positive */
+ return -1;
+ break;
+ case 3: /* both negative */
+ return bigint_cmp_u(b, a);
+ break;
+ default: /* how can this happen?*/
+ break;
+ }
+ return 0; /* just to satisfy the compiler */
+}
+
+/******************************************************************************/
+
+void bigint_shiftleft(bigint_t* a, uint16_t shift){
+ uint16_t byteshift;
+ uint16_t i;
+ uint8_t bitshift;
+ uint16_t t=0;
+ byteshift = (shift+3)/8;
+ bitshift = shift&7;
+ memmove(a->wordv+byteshift, a->wordv, a->length_B);
+ memset(a->wordv, 0, byteshift);
+ if(bitshift!=0){
+ if(bitshift<=4){ /* shift to the left */
+ for(i=byteshift; ilength_B+byteshift; ++i){
+ t |= (a->wordv[i])<wordv[i] = (uint8_t)t;
+ t >>= 8;
+ }
+ a->wordv[i] = (uint8_t)t;
+ }else{ /* shift to the right */
+ bitshift = 8 - bitshift;
+ for(i=a->length_B+byteshift-1; i>byteshift; --i){
+ t |= (a->wordv[i])<<(8-bitshift);
+ a->wordv[i] = (uint8_t)(t>>8);
+ t <<= 8;
+ }
+ t |= (a->wordv[i])<<(8-bitshift);
+ a->wordv[i] = (uint8_t)(t>>8);
+ }
+
+ }
+ a->length_B += byteshift+1;
+ bigint_adjust(a);
+}
+
+/******************************************************************************/
+
+void bigint_shiftright(bigint_t* a, uint16_t shift){
+ uint16_t byteshift;
+ uint16_t i;
+ uint8_t bitshift;
+ uint16_t t=0;
+ byteshift = shift/8;
+ bitshift = shift&7;
+ if(byteshift >= a->length_B){ /* we would shift out more than we have */
+ a->length_B=0;
+ a->wordv[0] = 0;
+ SET_FBS(a, 0);
+ return;
+ }
+ if(byteshift == a->length_B-1 && bitshift>GET_FBS(a)){
+ a->length_B=0;
+ a->wordv[0] = 0;
+ SET_FBS(a, 0);
+ return;
+ }
+ if(byteshift){
+ memmove(a->wordv, a->wordv+byteshift, a->length_B-byteshift);
+ memset(a->wordv+a->length_B-byteshift, 0, byteshift);
+ }
+ if(bitshift!=0){
+ /* shift to the right */
+ for(i=a->length_B-byteshift-1; i>0; --i){
+ t |= (a->wordv[i])<<(8-bitshift);
+ a->wordv[i] = (uint8_t)(t>>8);
+ t <<= 8;
+ }
+ t |= (a->wordv[0])<<(8-bitshift);
+ a->wordv[0] = (uint8_t)(t>>8);
+ }
+ a->length_B -= byteshift;
+ bigint_adjust(a);
+}
+
+/******************************************************************************/
+
+void bigint_xor(bigint_t* dest, const bigint_t* a){
+ uint16_t i;
+ for(i=0; ilength_B; ++i){
+ dest->wordv[i] ^= a->wordv[i];
+ }
+ bigint_adjust(dest);
+}
+
+/******************************************************************************/
+
+void bigint_set_zero(bigint_t* a){
+ a->length_B=0;
+}
+
+/******************************************************************************/
+
+/* using the Karatsuba-Algorithm */
+/* x*y = (xh*yh)*b**2n + ((xh+xl)*(yh+yl) - xh*yh - xl*yl)*b**n + yh*yl */
+void bigint_mul_u(bigint_t* dest, const bigint_t* a, const bigint_t* b){
+ if(a->length_B==0 || b->length_B==0){
+ bigint_set_zero(dest);
+ depth -= 1;
+ return;
+ }
+ if(a->length_B==1 || b->length_B==1){
+ if(a->length_B!=1){
+ XCHG_PTR(a,b);
+ }
+ uint16_t i, t=0;
+ uint8_t x = a->wordv[0];
+ for(i=0; ilength_B; ++i){
+ t += b->wordv[i]*x;
+ dest->wordv[i] = (uint8_t)t;
+ t>>=8;
+ }
+ dest->wordv[i] = (uint8_t)t;
+ dest->length_B=i+1;
+ bigint_adjust(dest);
+ return;
+ }
+ if(a->length_B<=4 && b->length_B<=4){
+ uint32_t p=0, q=0;
+ uint64_t r;
+ memcpy(&p, a->wordv, a->length_B);
+ memcpy(&q, b->wordv, b->length_B);
+ r = (uint64_t)p*(uint64_t)q;
+ memcpy(dest->wordv, &r, a->length_B+b->length_B);
+ dest->length_B = a->length_B+b->length_B;
+ bigint_adjust(dest);
+ return;
+ }
+ bigint_set_zero(dest);
+ /* split a in xh & xl; split b in yh & yl */
+ uint16_t n;
+ n=(MAX(a->length_B, b->length_B)+1)/2;
+ bigint_t xl, xh, yl, yh;
+ xl.wordv = a->wordv;
+ yl.wordv = b->wordv;
+ if(a->length_B<=n){
+ xh.info=0;
+ xh.length_B = 0;
+ xl.length_B = a->length_B;
+ xl.info = 0;
+ }else{
+ xl.length_B=n;
+ xl.info = 0;
+ bigint_adjust(&xl);
+ xh.wordv = a->wordv+n;
+ xh.length_B = a->length_B-n;
+ xh.info = 0;
+ }
+ if(b->length_B<=n){
+ yh.info=0;
+ yh.length_B = 0;
+ yl.length_B = b->length_B;
+ yl.info = b->info;
+ }else{
+ yl.length_B=n;
+ yl.info = 0;
+ bigint_adjust(&yl);
+ yh.wordv = b->wordv+n;
+ yh.length_B = b->length_B-n;
+ yh.info = 0;
+ }
+ /* now we have split up a and b */
+ uint8_t tmp_b[2*n+2], m_b[2*(n+1)];
+ bigint_t tmp, tmp2, m;
+ /* calculate h=xh*yh; l=xl*yl; sx=xh+xl; sy=yh+yl */
+ tmp.wordv = tmp_b;
+ tmp2.wordv = tmp_b+n+1;
+ m.wordv = m_b;
+
+ bigint_mul_u(dest, &xl, &yl); /* dest <= xl*yl */
+ bigint_add_u(&tmp2, &xh, &xl); /* tmp2 <= xh+xl */
+ bigint_add_u(&tmp, &yh, &yl); /* tmp <= yh+yl */
+ bigint_mul_u(&m, &tmp2, &tmp); /* m <= tmp*tmp */
+ bigint_mul_u(&tmp, &xh, &yh); /* h <= xh*yh */
+ bigint_sub_u(&m, &m, dest); /* m <= m-dest */
+ bigint_sub_u(&m, &m, &tmp); /* m <= m-h */
+ bigint_add_scale_u(dest, &m, n);
+ bigint_add_scale_u(dest, &tmp, 2*n);
+}
+
+/******************************************************************************/
+
+void bigint_mul_s(bigint_t* dest, const bigint_t* a, const bigint_t* b){
+ uint8_t s;
+ s = GET_SIGN(a)?2:0;
+ s |= GET_SIGN(b)?1:0;
+ switch(s){
+ case 0: /* both positive */
+ bigint_mul_u(dest, a,b);
+ SET_POS(dest);
+ break;
+ case 1: /* a positive, b negative */
+ bigint_mul_u(dest, a,b);
+ SET_NEG(dest);
+ break;
+ case 2: /* a negative, b positive */
+ bigint_mul_u(dest, a,b);
+ SET_NEG(dest);
+ break;
+ case 3: /* both negative */
+ bigint_mul_u(dest, a,b);
+ SET_POS(dest);
+ break;
+ default: /* how can this happen?*/
+ break;
+ }
+}
+
+/******************************************************************************/
+
+/* square */
+/* (xh*b^n+xl)^2 = xh^2*b^2n + 2*xh*xl*b^n + xl^2 */
+void bigint_square(bigint_t* dest, const bigint_t* a){
+ if(a->length_B<=4){
+ uint64_t r=0;
+ memcpy(&r, a->wordv, a->length_B);
+ r = r*r;
+ memcpy(dest->wordv, &r, 2*a->length_B);
+ SET_POS(dest);
+ dest->length_B=2*a->length_B;
+ bigint_adjust(dest);
+ return;
+ }
+ uint16_t n;
+ n=(a->length_B+1)/2;
+ bigint_t xh, xl, tmp; /* x-high, x-low, temp */
+ uint8_t buffer[2*n+1];
+ xl.wordv = a->wordv;
+ xl.length_B = n;
+ xh.wordv = a->wordv+n;
+ xh.length_B = a->length_B-n;
+ tmp.wordv = buffer;
+ bigint_square(dest, &xl);
+ bigint_square(&tmp, &xh);
+ bigint_add_scale_u(dest, &tmp, 2*n);
+ bigint_mul_u(&tmp, &xl, &xh);
+ bigint_shiftleft(&tmp, 1);
+ bigint_add_scale_u(dest, &tmp, n);
+
+}
+
+
+
+
+
+
+
diff --git a/bigint/bigint.h b/bigint/bigint.h
new file mode 100644
index 0000000..39bb173
--- /dev/null
+++ b/bigint/bigint.h
@@ -0,0 +1,63 @@
+/* bigint.h */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 Daniel Otte (daniel.otte@rub.de)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+*/
+/**
+ * \file bigint.h
+ * \author Daniel Otte
+ * \date 2010-02-22
+ *
+ * \license GPLv3 or later
+ *
+ */
+
+#ifndef BIGINT_H_
+#define BIGINT_H_
+
+#include
+
+#define BIGINT_FBS_MASK 0x07 /* the last three bits indicate which is the first bit set */
+#define BIGINT_NEG_MASK 0x80 /* this bit indicates a negative value */
+typedef struct{
+ uint16_t length_B;
+ uint8_t info;
+ uint8_t *wordv; /* word vector, pointing to the LSB */
+}bigint_t;
+
+
+/******************************************************************************/
+
+void bigint_adjust(bigint_t* a);
+void bigint_copy(bigint_t* dest, const bigint_t* src);
+void bigint_add_u(bigint_t* dest, const bigint_t* a, const bigint_t* b);
+void bigint_add_scale_u(bigint_t* dest, const bigint_t* a, uint16_t scale);
+void bigint_sub_u(bigint_t* dest, const bigint_t* a, const bigint_t* b);
+int8_t bigint_cmp_u(const bigint_t * a, const bigint_t * b);
+void bigint_add_s(bigint_t* dest, const bigint_t* a, const bigint_t* b);
+void bigint_sub_s(bigint_t* dest, const bigint_t* a, const bigint_t* b);
+int8_t bigint_cmp_s(const bigint_t* a, const bigint_t* b);
+void bigint_shiftleft(bigint_t* a, uint16_t shift);
+void bigint_shiftright(bigint_t* a, uint16_t shift);
+void bigint_xor(bigint_t* dest, const bigint_t* a);
+void bigint_set_zero(bigint_t* a);
+void bigint_mul_u(bigint_t* dest, const bigint_t* a, const bigint_t* b);
+void bigint_mul_s(bigint_t* dest, const bigint_t* a, const bigint_t* b);
+void bigint_square(bigint_t* dest, const bigint_t* a);
+
+/******************************************************************************/
+
+#endif /*BIGINT_H_*/
diff --git a/bigint/bigint_add_u.S b/bigint/bigint_add_u.S
new file mode 100644
index 0000000..7c34f1a
--- /dev/null
+++ b/bigint/bigint_add_u.S
@@ -0,0 +1,137 @@
+/* bigint_add_u.S */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2010 Daniel Otte (daniel.otte@rub.de)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+*/
+
+/**
+ * \file bigint_add_u.S
+ * \email daniel.otte@rub.de
+ * \author Daniel Otte
+ * \date 2010-03-01
+ * \license GPLv3 or later
+ *
+ */
+
+#include "avr-asm-macros.S"
+
+/*
+ param dest: r24:r25
+ param a: r22:r23
+ param b: r20:r21
+*/
+LEN_A_0 = 22
+LEN_A_1 = 23
+LEN_B_0 = 20
+LEN_B_1 = 21
+
+
+.global bigint_add_u
+bigint_add_u:
+ push_range 28, 29
+ push_range 24, 25
+ movw r26, r24 ; X is our destination pointer
+ movw r30, r22 ; Z = a
+ movw r28, r20 ; Y = b
+ ldd LEN_A_0, Z+0
+ ldd LEN_A_1, Z+1
+ ldd LEN_B_0, Y+0
+ ldd LEN_B_1, Y+1
+ cp LEN_A_0, LEN_B_0
+ cpc LEN_A_1, LEN_B_1
+ brsh 3f
+ movw r18, LEN_A_0 ; swap length values
+ movw LEN_A_0, LEN_B_0
+ movw LEN_B_0, r18
+ movw r18, r30 ; swap pointers
+ movw r30, r28
+ movw r28, r18
+3: ; now a is the longer integer
+ movw r24, LEN_A_0
+ adiw r24, 0
+ brne 4f
+ st X+, r1 ; store length
+ st X+, r1
+ st X+, r1 ; store 0 in info field
+ rjmp 9f
+4:
+ adiw r24, 1
+ st X+, r24 ; store length
+ st X+, r25
+ st X+, r1 ; store 0 in info field
+ ld r18, X+
+ ld r19, X+
+ movw r26, r18
+ adiw r30, 3 ; adjust pointers to point at wordv
+ ld r18, Z+
+ ld r19, Z+
+ movw r30, r18
+ adiw r28, 3
+ ld r18, Y+
+ ld r19, Y+
+ movw r28, r18
+
+ sub LEN_A_0, LEN_B_0
+ sbc LEN_A_1, LEN_B_1
+ movw r24, LEN_B_0
+ clr r0
+ adiw r24, 0
+ breq 6f
+ clc
+5:
+ ld r0, Z+
+ ld r1, Y+
+ adc r0, r1
+ st X+, r0
+ dec r24
+ brne 5b
+ rol r0 ; store carry bit
+ tst r25
+ breq 6f
+ dec r25
+ dec r24
+ ror r0 ; write carry back
+ rjmp 5b
+6: /* the main part is done */
+ movw r24, LEN_A_0
+ clr r1
+ adiw r24, 0
+ breq 8f
+62:
+ ror r0 ; write carry back
+7:
+ ld r0, Z+
+ adc r0, r1
+ st X+, r0
+ dec r24
+ brne 7b
+ rol r0 ; store carry bit
+ tst r25
+ breq 8f
+ dec r25
+ dec r24
+ rjmp 62b
+8:
+ ror r0
+ clr r0
+ rol r0
+ st X+, r0
+9:
+ pop_range 24, 25
+ pop_range 28, 29
+ jmp bigint_adjust
+
+
diff --git a/bigint/bigint_io.c b/bigint/bigint_io.c
new file mode 100644
index 0000000..1a2b12c
--- /dev/null
+++ b/bigint/bigint_io.c
@@ -0,0 +1,128 @@
+/* bigint_io.c */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2010 Daniel Otte (daniel.otte@rub.de)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+*/
+
+#include "cli.h"
+#include "bigint.h"
+#include
+#include
+
+void bigint_print_hex(const bigint_t* a){
+ if(a->info&BIGINT_NEG_MASK){
+ cli_putc('-');
+ }
+// cli_putc((a->info&BIGINT_NEG_MASK)?'-':'+'); /* print sign */
+ if(a->length_B!=0){
+ cli_hexdump_rev(a->wordv, a->length_B);
+ }else{
+ cli_putc('0');
+ }
+}
+
+#define BLOCKSIZE 20
+
+static uint8_t char2nibble(char c){
+ if(c>='0' && c <='9'){
+ return c-'0';
+ }
+ c |= 'A'^'a'; /* to lower case */
+ if(c>='a' && c <='f'){
+ return c-'a'+10;
+ }
+ return 0xff;
+}
+
+static uint16_t read_byte(void){
+ uint8_t t1, t2;
+ char c;
+ c = cli_getc_cecho();
+ if(c=='-'){
+ return 0x0500;
+ }
+ t1 = char2nibble(c);
+ if(t1 == 0xff){
+ return 0x0100;
+ }
+ c = cli_getc_cecho();
+ t2 = char2nibble(c);
+ if(t2 == 0xff){
+ return 0x0200|t1;
+ }
+ return (t1<<4)|t2;
+}
+
+uint8_t bigint_read_hex_echo(bigint_t* a){
+ uint16_t allocated=0;
+ uint8_t shift4=0;
+ uint16_t t;
+ a->length_B = 0;
+ a->wordv = NULL;
+ a->info = 0;
+ for(;;){
+ if(allocated-a->length_B < 1){
+ uint8_t *p;
+ p = realloc(a->wordv, allocated+=BLOCKSIZE);
+ if(p==NULL){
+ cli_putstr_P(PSTR("\r\nERROR: Out of memory!"));
+ free(a->wordv);
+ return 0xff;
+ }
+ a->wordv=p;
+ }
+ t = read_byte();
+ if(a->length_B==0){
+ if(t&0x0400){
+ /* got minus */
+ a->info |= BIGINT_NEG_MASK;
+ continue;
+ }else{
+ if(t==0x0100){
+ free(a->wordv);
+ a->wordv=NULL;
+ return 1;
+ }
+ }
+ }
+ if(t<=0x00ff){
+ a->wordv[a->length_B++] = (uint8_t)t;
+ }else{
+ if(t&0x0200){
+ shift4 = 1;
+ a->wordv[a->length_B++] = (uint8_t)((t&0x0f)<<4);
+ }
+ break;
+ }
+ }
+ /* we have to reverse the byte array */
+ uint8_t tmp;
+ uint8_t *p, *q;
+ p = a->wordv;
+ q = a->wordv+a->length_B-1;
+ while(q>p){
+ tmp = *p;
+ *p = *q;
+ *q = tmp;
+ p++; q--;
+ }
+ if(shift4){
+ bigint_adjust(a);
+ bigint_shiftright(a, 4);
+ }
+ bigint_adjust(a);
+ return 0;
+}
diff --git a/bigint/bigint_io.h b/bigint/bigint_io.h
new file mode 100644
index 0000000..e47391d
--- /dev/null
+++ b/bigint/bigint_io.h
@@ -0,0 +1,28 @@
+/* bigint_io.h */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2010 Daniel Otte (daniel.otte@rub.de)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+*/
+
+#ifndef BIGINT_IO_H_
+#define BIGINT_IO_H_
+
+#include "bigint.h"
+
+void bigint_print_hex(const bigint_t* a);
+uint8_t bigint_read_hex_echo(bigint_t* a);
+
+#endif /* BIGINT_IO_H_ */
diff --git a/host/bigint_test.rb b/host/bigint_test.rb
new file mode 100644
index 0000000..9048f89
--- /dev/null
+++ b/host/bigint_test.rb
@@ -0,0 +1,428 @@
+#!/usr/bin/ruby
+# bigint_test.rb
+=begin
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008, 2009 Daniel Otte (daniel.otte@rub.de)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+=end
+
+$debug = true
+$debug = false
+require 'rubygems'
+require 'serialport'
+require 'getopt/std'
+require 'ftools'
+require 'date'
+$buffer_size = 0
+$conffile_check = Hash.new
+$conffile_check.default = 0
+
+################################################################################
+# readconfigfile #
+################################################################################
+
+def readconfigfile(fname, conf)
+ return conf if $conffile_check[fname]==1
+ $conffile_check[fname]=1
+ section = "default"
+ if not File.exists?(fname)
+ return conf
+ end
+ file = File.open(fname, "r")
+ until file.eof
+ line = file.gets()
+ next if /[\s]*#/.match(line)
+ if m=/\[[\s]*([^\s]*)[\s]*\]/.match(line)
+ section=m[1]
+ conf[m[1]] = Hash.new
+ next
+ end
+ next if not /=/.match(line)
+ m=/[\s]*([^\s]*)[\s]*=[\s]*([^\s]*)/.match(line)
+ if m[1]=="include"
+ Dir.glob(m[2]){ |fn| conf = readconfigfile(fn, conf) }
+ else
+ conf[section][m[1]] = m[2]
+ end
+ end
+ file.close()
+ return conf
+end
+
+################################################################################
+# reset_system #
+################################################################################
+
+def reset_system
+ $sp.print("exit\r")
+ sleep 0.1
+ $sp.print("exit\r")
+ sleep 0.1
+end
+
+################################################################################
+# init_system #
+################################################################################
+
+def init_system(test_prog)
+ $sp.print("echo off \r")
+ print("DBG i: " + "echo off \r"+"\n") if $debug
+ sleep 0.1
+ $sp.print("#{test_prog}\r")
+ print("DBG i: " + "#{test_prog} \r"+"\n") if $debug
+ sleep 1
+end
+
+
+################################################################################
+# screen_progress #
+################################################################################
+def screen_progress(v)
+ if $linepos==0
+ printf("\n%5d [%04d]: ", $testno, $size)
+ end
+ putc((v)?('*'):('!'))
+ $testno += 1
+ $linepos = ($linepos+1)%$linewidth
+end
+
+################################################################################
+# add_test #
+################################################################################
+
+def add_test(a,b)
+ begin
+ line = $sp.gets()
+ line = "" if line==nil
+ puts("DBG got: "+line) if $debug
+ if /^Error:.*/.match(line)
+ puts line
+ return false
+ end
+ end while not /[\s]*enter a:[\s]*/.match(line)
+ $sp.print(a.to_s(16)+" ")
+ begin
+ line = $sp.gets()
+ line = "" if line==nil
+ puts("DBG got: "+line) if $debug
+ if /^Error:.*/.match(line)
+ puts line
+ return false
+ end
+ end while not /[\s]*enter b:[\s]*/.match(line)
+ $sp.print(b.to_s(16)+" ")
+ begin
+ line = $sp.gets()
+ line = "" if line==nil
+ puts("DBG got: "+line) if $debug
+ if /^Error:.*/.match(line)
+ puts line
+ return false
+ end
+ end while not m=/[\s]*([-]?[0-9a-fA-F]*)[\s]+\+[\s]+([+-]?[0-9a-fA-F]*)[\s]*=[\s]*([+-]?[0-9a-fA-F]*)/.match(line)
+ a_ = m[1].to_i(16)
+ b_ = m[2].to_i(16)
+ c_ = m[3].to_i(16)
+ line.chomp!
+ if(a_== a && b_ == b && c_ == (a+b))
+ $logfile.printf("[pass]: %s\n", line)
+ return true
+ else
+ $logfile.printf("[fail (%s%s%s)]: %s", (a==a_)?"":"a", (b==b_)?"":"b", (c_==a+b)?"":"c",line)
+ $logfile.printf(" ; should %s + %s = %s\n", a.to_s(16), b.to_s(16), (a+b).to_s(16))
+ return false
+ end
+ return false
+end
+
+################################################################################
+# mul_test #
+################################################################################
+
+def mul_test(a,b)
+ begin
+ line = $sp.gets()
+ line = "" if line==nil
+ puts("DBG got: "+line) if $debug
+ if /^Error:.*/.match(line)
+ puts line
+ return false
+ end
+ end while not /[\s]*enter a:[\s]*/.match(line)
+ $sp.print(a.to_s(16)+" ")
+ begin
+ line = $sp.gets()
+ line = "" if line==nil
+ puts("DBG got: "+line) if $debug
+ if /^Error:.*/.match(line)
+ puts line
+ return false
+ end
+ end while not /[\s]*enter b:[\s]*/.match(line)
+ $sp.print(b.to_s(16)+" ")
+ begin
+ line = $sp.gets()
+ line = "" if line==nil
+ puts("DBG got: "+line) if $debug
+ if /^Error:.*/.match(line)
+ puts line
+ return false
+ end
+ end while not m=/[\s]*([+-]?[0-9a-fA-F]*)[\s]+\*[\s]+([+-]?[0-9a-fA-F]*)[\s]*=[\s]*([+-]?[0-9a-fA-F]*)/.match(line)
+ a_ = m[1].to_i(16)
+ b_ = m[2].to_i(16)
+ c_ = m[3].to_i(16)
+ line.chomp!
+ if(a_== a && b_ == b && c_ == (a*b))
+ $logfile.printf("[pass]: %s\n", line)
+ return true
+ else
+ $logfile.printf("[fail (%s%s%s)]: %s", (a==a_)?"":"a", (b==b_)?"":"b", (c_==a+b)?"":"c",line)
+ $logfile.printf(" ; should %s * %s = %s\n", a.to_s(16), b.to_s(16), (a*b).to_s(16))
+ return false
+ end
+ return false
+end
+
+################################################################################
+# square_test #
+################################################################################
+
+def square_test(a)
+ begin
+ line = $sp.gets()
+ line = "" if line==nil
+ puts("DBG got: "+line) if $debug
+ if /^Error:.*/.match(line)
+ puts line
+ return false
+ end
+ end while not /[\s]*enter a:[\s]*/.match(line)
+ $sp.print(a.to_s(16)+" ")
+ begin
+ line = $sp.gets()
+ line = "" if line==nil
+ puts("DBG got: "+line) if $debug
+ if /^Error:.*/.match(line)
+ puts line
+ return false
+ end
+ end while not m=/[\s]*([+-]?[0-9a-fA-F]*)[\s]*\*\*2[\s]*=[\s]*([+-]?[0-9a-fA-F]*)/.match(line)
+ a_ = m[1].to_i(16)
+ c_ = m[2].to_i(16)
+ line.chomp!
+ if(a_== a && c_ == (a**2))
+ $logfile.printf("[pass]: %s\n", line)
+ return true
+ else
+ $logfile.printf("[fail (%s%s)]: %s", (a==a_)?"":"a", (c_==a**2)?"":"c",line)
+ $logfile.printf(" ; should %s **2 = %s\n", a.to_s(16), (a**2).to_s(16))
+ return false
+ end
+ return false
+end
+
+################################################################################
+# run_test_add #
+################################################################################
+
+def run_test_add(skip=0)
+ length_a_B = skip+1
+ length_b_B = skip+1
+ begin
+ $size = length_a_B
+ (0..16).each do |i|
+ s_a = rand(2)*2-1
+ s_b = rand(2)*2-1
+ a = rand(256**length_a_B) * s_a
+ b = rand(256**length_a_B) * s_b
+ v = add_test(a, b)
+ screen_progress(v)
+ v = add_test(b, a)
+ screen_progress(v)
+ end
+ (0..16).each do |i|
+ s_a = rand(2)-1
+ s_b = rand(2)-1
+ b_size = rand(length_b_B+1)
+ a = rand(256**length_a_B) * s_a
+ b = rand(256**b_size) * s_b
+ v = add_test(a, b)
+ screen_progress(v)
+ v = add_test(b, a)
+ screen_progress(v)
+
+ end
+ length_a_B += 1
+ length_b_B += 1
+ end while length_a_B<4096/8
+end
+
+################################################################################
+# run_test_mul #
+################################################################################
+
+def run_test_mul(skip=0)
+ length_a_B = skip+1
+ length_b_B = skip+1
+ begin
+ $size = length_a_B
+ (0..16).each do |i|
+ s_a = rand(2)*2-1
+ s_b = rand(2)*2-1
+ a = rand(256**length_a_B) * s_a
+ b = rand(256**length_a_B) * s_b
+ v = mul_test(a, b)
+ screen_progress(v)
+ v = mul_test(b, a)
+ screen_progress(v)
+ end
+ (0..16).each do |i|
+ s_a = rand(2)-1
+ s_b = rand(2)-1
+ b_size = rand(length_b_B+1)
+ a = rand(256**length_a_B) * s_a
+ b = rand(256**b_size) * s_b
+ v = mul_test(a, b)
+ screen_progress(v)
+ v = mul_test(b, a)
+ screen_progress(v)
+ end
+ length_a_B += 1
+ length_b_B += 1
+ end while length_a_B<4096/8
+end
+
+################################################################################
+# run_test_square #
+################################################################################
+
+def run_test_square(skip=0)
+ length_a_B = skip+1
+ begin
+ $size = length_a_B
+ (0..16).each do |i|
+ a = rand(256**length_a_B)
+ v = square_test(a)
+ screen_progress(v)
+ end
+ length_a_B += 1
+ end while length_a_B<4096/8
+end
+
+################################################################################
+# MAIN #
+################################################################################
+
+opts = Getopt::Std.getopts("s:f:i:a:hd")
+
+conf = Hash.new
+conf = readconfigfile("/etc/testport.conf", conf)
+conf = readconfigfile("~/.testport.conf", conf)
+conf = readconfigfile("testport.conf", conf)
+conf = readconfigfile(opts["f"], conf) if opts["f"]
+
+#puts conf.inspect
+
+puts("serial port interface version: " + SerialPort::VERSION);
+$linewidth = 64
+$linepos = 0
+$testno = 0
+params = { "baud" => conf["PORT"]["baud"].to_i,
+ "data_bits" => conf["PORT"]["databits"].to_i,
+ "stop_bits" => conf["PORT"]["stopbits"].to_i,
+ "parity" => SerialPort::NONE }
+params["paraty"] = SerialPort::ODD if conf["PORT"]["paraty"].downcase == "odd"
+params["paraty"] = SerialPort::EVEN if conf["PORT"]["paraty"].downcase == "even"
+params["paraty"] = SerialPort::MARK if conf["PORT"]["paraty"].downcase == "mark"
+params["paraty"] = SerialPort::SPACE if conf["PORT"]["paraty"].downcase == "space"
+
+puts("\nPort: "+conf["PORT"]["port"]+"@" +
+ params["baud"].to_s +
+ " " +
+ params["data_bits"].to_s +
+ conf["PORT"]["paraty"][0,1].upcase +
+ params["stop_bits"].to_s +
+ "\n")
+
+$sp = SerialPort.new(conf["PORT"]["port"], params)
+
+$sp.read_timeout=1000; # 5 minutes
+$sp.flow_control = SerialPort::SOFT
+
+reset_system()
+
+if opts['d']
+ $debug = true
+end
+
+logfilename = conf['PORT']['testlogbase']+'bigint.txt'
+if File.exists?(logfilename)
+ i=1
+ begin
+ logfilename = sprintf('%s%04d%s', conf['PORT']['testlogbase']+'bigint_',i,'.txt')
+ i+=1
+ end while(File.exists?(logfilename))
+ while(i>2) do
+ File.move(sprintf('%s%04d%s', conf['PORT']['testlogbase']+'bigint_',i-2,'.txt'),
+ sprintf('%s%04d%s', conf['PORT']['testlogbase']+'bigint_',i-1,'.txt'), true)
+ i-=1
+ end
+ File.move(sprintf('%s%s', conf['PORT']['testlogbase'],'bigint.txt'),
+ sprintf('%s%04d%s', conf['PORT']['testlogbase']+'bigint_',1,'.txt'), true)
+ logfilename = conf['PORT']['testlogbase']+'bigint.txt'
+end
+$logfile = File.open(logfilename, 'w')
+printf("logfile: %s\n", logfilename)
+
+$logfile.printf("bigint test from: %s\n", Time.now.to_s)
+$logfile.printf("skip = %s\n", opts['s']) if opts['s']
+$logfile.printf("seed = 0x%X\n", 0xdeadbeef)
+
+tests = Hash.new
+tests['a'] = proc {|x| run_test_add(x) }
+tests['m'] = proc {|x| run_test_mul(x) }
+tests['s'] = proc {|x| run_test_square(x) }
+init_str = Hash.new
+init_str['a'] = 'add-test'
+init_str['m'] = 'mul-test'
+init_str['s'] = 'square-test'
+
+srand(0xdeadbeef)
+
+if opts['a']
+ opts['a'].each_char do |x|
+ if tests[x]
+ puts init_str[x]
+ init_system(init_str[x])
+ tests[x].call(opts['s']?opts['s'].to_i():0)
+ else
+ puts "no test defiened for '#{x}'"
+ end
+ end
+else
+ 'ams'.each_char do |x|
+ if tests[x]
+ puts init_str[x]
+ init_system(init_str[x])
+ tests[x].call(opts['s']?opts['s'].to_i():0)
+ else
+ puts "no test defiened for '#{x}'"
+ end
+ end
+end
+
+
+$logile.close()
diff --git a/mkfiles/bigint.mk b/mkfiles/bigint.mk
new file mode 100644
index 0000000..de7100e
--- /dev/null
+++ b/mkfiles/bigint.mk
@@ -0,0 +1,13 @@
+# Makefile for BigInt
+ALGO_NAME := BIGINT
+
+# comment out the following line for removement of base64 from the build process
+ENCODINGS += $(ALGO_NAME)
+
+$(ALGO_NAME)_DIR := bigint/
+$(ALGO_NAME)_OBJ := bigint.o bigint_io.o bigint_add_u.o
+$(ALGO_NAME)_TEST_BIN := main-bigint-test.o $(CLI_STD) \
+ performance_test.o noekeon_asm.o noekeon_prng.o memxor.o
+
+$(ALGO_NAME)_PERFORMANCE_TEST := performance
+
diff --git a/test_src/main-bigint-test.c b/test_src/main-bigint-test.c
new file mode 100644
index 0000000..3d5bd21
--- /dev/null
+++ b/test_src/main-bigint-test.c
@@ -0,0 +1,284 @@
+/* main-base64-test.c */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008, 2009 Daniel Otte (daniel.otte@rub.de)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+*/
+/*
+ * base64 test-suit
+ *
+*/
+
+#include "config.h"
+
+#include "uart_i.h"
+#include "debug.h"
+
+#include "noekeon.h"
+#include "noekeon_prng.h"
+#include "bigint.h"
+#include "bigint_io.h"
+
+#include "cli.h"
+#include "performance_test.h"
+
+#include
+#include
+#include
+
+char* algo_name = "BigInt";
+
+/*****************************************************************************
+ * additional validation-functions *
+ *****************************************************************************/
+void test_echo_bigint(void){
+ bigint_t a;
+ cli_putstr_P(PSTR("\r\necho test\r\n"));
+ for(;;){
+ cli_putstr_P(PSTR("\r\nenter hex number:"));
+ if(bigint_read_hex_echo(&a)){
+ cli_putstr_P(PSTR("\r\n end echo test"));
+ return;
+ }
+ cli_putstr_P(PSTR("\r\necho: "));
+ bigint_print_hex(&a);
+ cli_putstr_P(PSTR("\r\n"));
+ free(a.wordv);
+ }
+}
+
+void test_add_bigint(void){
+ bigint_t a, b, c;
+ cli_putstr_P(PSTR("\r\nadd test\r\n"));
+ for(;;){
+ cli_putstr_P(PSTR("\r\nenter a:"));
+ if(bigint_read_hex_echo(&a)){
+ cli_putstr_P(PSTR("\r\n end add test"));
+ return;
+ }
+ cli_putstr_P(PSTR("\r\nenter b:"));
+ if(bigint_read_hex_echo(&b)){
+ free(a.wordv);
+ cli_putstr_P(PSTR("\r\n end add test"));
+ return;
+ }
+ cli_putstr_P(PSTR("\r\n "));
+ bigint_print_hex(&a);
+ cli_putstr_P(PSTR(" + "));
+ bigint_print_hex(&b);
+ cli_putstr_P(PSTR(" = "));
+ uint8_t *c_b;
+ c_b = malloc(((a.length_B>b.length_B)?a.length_B:b.length_B)+2);
+ if(c_b==NULL){
+ cli_putstr_P(PSTR("\n\rERROR: Out of memory!"));
+ free(a.wordv);
+ free(b.wordv);
+ continue;
+ }
+ c.wordv = c_b;
+ bigint_add_s(&c, &a, &b);
+ bigint_print_hex(&c);
+ cli_putstr_P(PSTR("\r\n"));
+ free(a.wordv);
+ free(b.wordv);
+ free(c_b);
+ }
+}
+
+void test_mul_bigint(void){
+ bigint_t a, b, c;
+ cli_putstr_P(PSTR("\r\nmul test\r\n"));
+ for(;;){
+ cli_putstr_P(PSTR("\r\nenter a:"));
+ if(bigint_read_hex_echo(&a)){
+ cli_putstr_P(PSTR("\r\n end mul test"));
+ return;
+ }
+ cli_putstr_P(PSTR("\r\nenter b:"));
+ if(bigint_read_hex_echo(&b)){
+ free(a.wordv);
+ cli_putstr_P(PSTR("\r\n end mul test"));
+ return;
+ }
+ cli_putstr_P(PSTR("\r\n "));
+ bigint_print_hex(&a);
+ cli_putstr_P(PSTR(" * "));
+ bigint_print_hex(&b);
+ cli_putstr_P(PSTR(" = "));
+ uint8_t *c_b;
+ c_b = malloc((((a.length_B>b.length_B)?a.length_B:b.length_B)+1)*2);
+ if(c_b==NULL){
+ cli_putstr_P(PSTR("\n\rERROR: Out of memory!"));
+ free(a.wordv);
+ free(b.wordv);
+ continue;
+ }
+ c.wordv = c_b;
+ bigint_mul_s(&c, &a, &b);
+ bigint_print_hex(&c);
+ cli_putstr_P(PSTR("\r\n"));
+ free(a.wordv);
+ free(b.wordv);
+ free(c_b);
+ }
+}
+
+void test_square_bigint(void){
+ bigint_t a, c;
+ cli_putstr_P(PSTR("\r\nsquare test\r\n"));
+ for(;;){
+ cli_putstr_P(PSTR("\r\nenter a:"));
+ if(bigint_read_hex_echo(&a)){
+ cli_putstr_P(PSTR("\r\n end square test"));
+ return;
+ }
+ cli_putstr_P(PSTR("\r\n "));
+ bigint_print_hex(&a);
+ cli_putstr_P(PSTR("**2 = "));
+ uint8_t *c_b;
+ c_b = malloc(a.length_B*2);
+ if(c_b==NULL){
+ cli_putstr_P(PSTR("\n\rERROR: Out of memory!"));
+ free(a.wordv);
+ continue;
+ }
+ c.wordv = c_b;
+ bigint_square(&c, &a);
+ bigint_print_hex(&c);
+ cli_putstr_P(PSTR("\r\n"));
+ free(a.wordv);
+ free(c_b);
+ }
+}
+
+void test_simple(void){
+ bigint_t a, b, c;
+ uint8_t a_b[1], b_b[1], c_b[2];
+ a.wordv=a_b;
+ b.wordv=b_b;
+ c.wordv=c_b;
+ a.length_B = 1;
+ b.length_B = 1;
+ a_b[0] = 1;
+ b_b[0] = 2;
+ bigint_add_u(&c, &a, &b);
+ cli_putstr_P(PSTR("\r\n 1+2="));
+ bigint_print_hex(&c);
+}
+/*
+void test_mul_simple(void){
+ bigint_t a, b, c;
+ uint8_t a_b[5] = {0x79, 0x36, 0x9e, 0x72, 0xec};
+ uint8_t b_b[5] = {0x4a, 0x47, 0x0d, 0xec, 0xfd};
+ uint8_t c_b[12];
+ a.wordv=a_b;
+ b.wordv=b_b;
+ c.wordv=c_b;
+ a.length_B = 5;
+ b.length_B = 5;
+ bigint_adjust(&a);
+ bigint_adjust(&b);
+ bigint_mul_s(&c, &a, &b);
+ cli_putstr_P(PSTR("\r\n test: "));
+ bigint_print_hex(&c);
+}
+*/
+
+// -3d1d 6db7 8251 f371 * -7a18 3791 d18b b7c5 = 1d25ce4fdf93390f8d6c709f4d711cf5
+// -20538248dece6d29068d * 400b1411b874f81394c6 = -81646b193d95136a6fedb73cee6d30c39fb950e
+// -BC8B 7D53 4921 853D * 0DDA 6044 00CE DDE6 = -a33eb0c5847db8837589c22db395dce
+void test_mul_simple(void){
+ bigint_t a, b, c;
+
+// uint8_t a_b[10] = {0x8d, 0x06, 0x29, 0x6d, 0xce, 0xde, 0x48, 0x82, 0x53, 0x20};
+// uint8_t b_b[10] = {0xc6, 0x94, 0x13, 0xf8, 0x74, 0xb8, 0x11, 0x14, 0x0b, 0x40};
+ uint8_t a_b[8] = {0x3d, 0x85, 0x21, 0x49, 0x53, 0x7d, 0x8b, 0xbc};
+ uint8_t b_b[8] = {0xe6, 0xdd, 0xce, 0x00, 0x44, 0x60, 0xda, 0x0d};
+
+ uint8_t c_b[16];
+ a.wordv=a_b;
+ b.wordv=b_b;
+ c.wordv=c_b;
+ a.length_B = 8;
+ b.length_B = 8;
+ a.info=0x80;
+ bigint_adjust(&a);
+ bigint_adjust(&b);
+ bigint_mul_s(&c, &a, &b);
+ cli_putstr_P(PSTR("\r\n test: "));
+ bigint_print_hex(&a);
+ cli_putstr_P(PSTR(" * "));
+ bigint_print_hex(&b);
+ cli_putstr_P(PSTR(" = "));
+ bigint_print_hex(&c);
+}
+
+// f4 b86a 2220 0774 437d 70e6 **2 = e9f00f29ca1c876a7a682bd1e04f6925caffd6660ea4
+void test_square_simple(void){
+ bigint_t a, c;
+
+ uint8_t a_b[11] = {0xe6, 0x70, 0x7d, 0x43, 0x74, 0x07, 0x20, 0x22, 0x6a, 0xb8, 0xf4};
+ uint8_t c_b[22];
+ a.wordv=a_b;
+ c.wordv=c_b;
+ a.length_B = 11;
+ a.info=0x00;
+ bigint_adjust(&a);
+ bigint_square(&c, &a);
+ cli_putstr_P(PSTR("\r\n test: "));
+ bigint_print_hex(&a);
+ cli_putstr_P(PSTR("**2 = "));
+ bigint_print_hex(&c);
+}
+
+
+void testrun_performance_bigint(void){
+
+}
+/*****************************************************************************
+ * main *
+ *****************************************************************************/
+
+const char echo_test_str[] PROGMEM = "echo-test";
+const char add_test_str[] PROGMEM = "add-test";
+const char mul_test_str[] PROGMEM = "mul-test";
+const char square_test_str[] PROGMEM = "square-test";
+const char quick_test_str[] PROGMEM = "quick-test";
+const char performance_str[] PROGMEM = "performance";
+const char echo_str[] PROGMEM = "echo";
+
+cmdlist_entry_t cmdlist[] PROGMEM = {
+ { add_test_str, NULL, test_add_bigint },
+ { mul_test_str, NULL, test_mul_bigint },
+ { square_test_str, NULL, test_square_bigint },
+ { quick_test_str, NULL, test_mul_simple },
+ { echo_test_str, NULL, test_echo_bigint },
+ { performance_str, NULL, testrun_performance_bigint },
+ { echo_str, (void*)1, (void_fpt)echo_ctrl },
+ { NULL, NULL, NULL }
+};
+
+int main (void){
+ DEBUG_INIT();
+
+ cli_rx = (cli_rx_fpt)uart0_getc;
+ cli_tx = (cli_tx_fpt)uart0_putc;
+ for(;;){
+ cli_putstr_P(PSTR("\r\n\r\nCrypto-VS ("));
+ cli_putstr(algo_name);
+ cli_putstr_P(PSTR(")\r\nloaded and running\r\n"));
+ cmd_interface(cmdlist);
+ }
+}