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changing length_B to length_W to reflect earlier changes

This commit is contained in:
bg 2012-09-07 23:34:12 +02:00
parent cd6cc49401
commit fdbda6486d
14 changed files with 314 additions and 314 deletions
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192
bigint/bigint-stub.c
View File

@ -59,8 +59,8 @@
/******************************************************************************/
/*
void bigint_copy(bigint_t* dest, const bigint_t* src){
memcpy(dest->wordv, src->wordv, src->length_B);
dest->length_B = src->length_B;
memcpy(dest->wordv, src->wordv, src->length_W);
dest->length_W = src->length_W;
dest->info = src->info;
}
*/
@ -70,21 +70,21 @@ 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){
uint16_t t=0, i;
if(a->length_B < b->length_B){
if(a->length_W < b->length_W){
XCHG_PTR(a,b);
}
for(i=0; i<b->length_B; ++i){
for(i=0; i<b->length_W; ++i){
t = a->wordv[i] + b->wordv[i] + t;
dest->wordv[i] = (uint8_t)t;
t>>=8;
}
for(; i<a->length_B; ++i){
for(; i<a->length_W; ++i){
t = a->wordv[i] + t;
dest->wordv[i] = (uint8_t)t;
t>>=8;
}
dest->wordv[i++] = t;
dest->length_B = i;
dest->length_W = i;
bigint_adjust(dest);
}
*/
@ -95,26 +95,26 @@ 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){
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; i<a->length_B+scale; ++i,++j){
if(scale>dest->length_W)
memset(dest->wordv+dest->length_W, 0, scale-dest->length_W);
for(i=scale; i<a->length_W+scale; ++i,++j){
t = a->wordv[j] + t;
if(dest->length_B>i){
if(dest->length_W>i){
t += dest->wordv[i];
}
dest->wordv[i] = (uint8_t)t;
t>>=8;
}
while(t){
if(dest->length_B>i){
if(dest->length_W>i){
t = dest->wordv[i] + t;
}
dest->wordv[i] = (uint8_t)t;
t>>=8;
++i;
}
if(dest->length_B < i){
dest->length_B = i;
if(dest->length_W < i){
dest->length_W = i;
}
bigint_adjust(dest);
}
@ -127,25 +127,25 @@ void bigint_sub_u(bigint_t* dest, const bigint_t* a, const bigint_t* b){
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);
min = MIN(a->length_W, b->length_W);
max = MAX(a->length_W, b->length_W);
r = bigint_cmp_u(a,b);
if(r==0){
dest->length_B = 0;
dest->length_W = 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);
if(b->length_W==0){
dest->length_W = a->length_W;
memcpy(dest->wordv, a->wordv, a->length_W);
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);
if(a->length_W==0){
dest->length_W = b->length_W;
memcpy(dest->wordv, b->wordv, b->length_W);
dest->info = b->info;
SET_NEG(dest);
return;
@ -176,7 +176,7 @@ void bigint_sub_u(bigint_t* dest, const bigint_t* a, const bigint_t* b){
}
SET_POS(dest);
dest->length_B = i;
dest->length_W = i;
bigint_adjust(dest);
}
}
@ -184,17 +184,17 @@ 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){
if(a->length_B > b->length_B){
if(a->length_W > b->length_W){
return 1;
}
if(a->length_B < b->length_B){
if(a->length_W < b->length_W){
return -1;
}
if(a->length_B==0){
if(a->length_W==0){
return 0;
}
uint16_t i;
i = a->length_B-1;
i = a->length_W-1;
do{
if(a->wordv[i]!=b->wordv[i]){
if(a->wordv[i]>b->wordv[i]){
@ -264,7 +264,7 @@ 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){
uint8_t s;
if(a->length_B==0 && b->length_B==0){
if(a->length_W==0 && b->length_W==0){
return 0;
}
s = GET_SIGN(a)?2:0;
@ -297,11 +297,11 @@ void bigint_shiftleft(bigint_t* a, uint16_t shift){
uint16_t t=0;
byteshift = (shift+3)/8;
bitshift = shift&7;
memmove(a->wordv+byteshift, a->wordv, a->length_B);
memmove(a->wordv+byteshift, a->wordv, a->length_W);
memset(a->wordv, 0, byteshift);
if(bitshift!=0){
if(bitshift<=4){ /* shift to the left */
for(i=byteshift; i<a->length_B+byteshift; ++i){
for(i=byteshift; i<a->length_W+byteshift; ++i){
t |= (a->wordv[i])<<bitshift;
a->wordv[i] = (uint8_t)t;
t >>= 8;
@ -309,7 +309,7 @@ void bigint_shiftleft(bigint_t* a, uint16_t shift){
a->wordv[i] = (uint8_t)t;
byteshift++;
}else{ /* shift to the right */
for(i=a->length_B+byteshift-1; i>byteshift-1; --i){
for(i=a->length_W+byteshift-1; i>byteshift-1; --i){
t |= (a->wordv[i])<<(bitshift);
a->wordv[i] = (uint8_t)(t>>8);
t <<= 8;
@ -318,7 +318,7 @@ void bigint_shiftleft(bigint_t* a, uint16_t shift){
a->wordv[i] = (uint8_t)(t>>8);
}
}
a->length_B += byteshift;
a->length_W += byteshift;
bigint_adjust(a);
}
@ -331,21 +331,21 @@ void bigint_shiftright(bigint_t* a, uint16_t shift){
uint16_t t=0;
byteshift = shift/8;
bitshift = shift&7;
if(byteshift >= a->length_B){ /* we would shift out more than we have */
if(byteshift >= a->length_W){ /* we would shift out more than we have */
bigint_set_zero(a);
return;
}
if(byteshift == a->length_B-1 && bitshift>GET_FBS(a)){
if(byteshift == a->length_W-1 && bitshift>GET_FBS(a)){
bigint_set_zero(a);
return;
}
if(byteshift){
memmove(a->wordv, a->wordv+byteshift, a->length_B-byteshift);
memset(a->wordv+a->length_B-byteshift, 0, byteshift);
memmove(a->wordv, a->wordv+byteshift, a->length_W-byteshift);
memset(a->wordv+a->length_W-byteshift, 0, byteshift);
}
if(bitshift!=0){
/* shift to the right */
for(i=a->length_B-byteshift-1; i>0; --i){
for(i=a->length_W-byteshift-1; i>0; --i){
t |= (a->wordv[i])<<(8-bitshift);
a->wordv[i] = (uint8_t)(t>>8);
t <<= 8;
@ -353,7 +353,7 @@ void bigint_shiftright(bigint_t* a, uint16_t shift){
t |= (a->wordv[0])<<(8-bitshift);
a->wordv[0] = (uint8_t)(t>>8);
}
a->length_B -= byteshift;
a->length_W -= byteshift;
bigint_adjust(a);
}
@ -361,7 +361,7 @@ void bigint_shiftright(bigint_t* a, uint16_t shift){
void bigint_xor(bigint_t* dest, const bigint_t* a){
uint16_t i;
for(i=0; i<a->length_B; ++i){
for(i=0; i<a->length_W; ++i){
dest->wordv[i] ^= a->wordv[i];
}
bigint_adjust(dest);
@ -370,7 +370,7 @@ void bigint_xor(bigint_t* dest, const bigint_t* a){
/******************************************************************************/
void bigint_set_zero(bigint_t* a){
a->length_B=0;
a->length_W=0;
}
/******************************************************************************/
@ -378,76 +378,76 @@ void bigint_set_zero(bigint_t* a){
/* 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){
if(a->length_W==0 || b->length_W==0){
bigint_set_zero(dest);
return;
}
if(dest==a || dest==b){
bigint_t d;
uint8_t d_b[a->length_B+b->length_B];
uint8_t d_b[a->length_W+b->length_W];
d.wordv = d_b;
bigint_mul_u(&d, a, b);
bigint_copy(dest, &d);
return;
}
if(a->length_B==1 || b->length_B==1){
if(a->length_B!=1){
if(a->length_W==1 || b->length_W==1){
if(a->length_W!=1){
XCHG_PTR(a,b);
}
uint16_t i, t=0;
uint8_t x = a->wordv[0];
for(i=0; i<b->length_B; ++i){
for(i=0; i<b->length_W; ++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;
dest->length_W=i+1;
bigint_adjust(dest);
return;
}
if(a->length_B<=4 && b->length_B<=4){
if(a->length_W<=4 && b->length_W<=4){
uint32_t p=0, q=0;
uint64_t r;
memcpy(&p, a->wordv, a->length_B);
memcpy(&q, b->wordv, b->length_B);
memcpy(&p, a->wordv, a->length_W);
memcpy(&q, b->wordv, b->length_W);
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;
memcpy(dest->wordv, &r, a->length_W+b->length_W);
dest->length_W = a->length_W+b->length_W;
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;
n=(MAX(a->length_W, b->length_W)+1)/2;
bigint_t xl, xh, yl, yh;
xl.wordv = a->wordv;
yl.wordv = b->wordv;
if(a->length_B<=n){
if(a->length_W<=n){
xh.info=0;
xh.length_B = 0;
xl.length_B = a->length_B;
xh.length_W = 0;
xl.length_W = a->length_W;
xl.info = 0;
}else{
xl.length_B=n;
xl.length_W=n;
xl.info = 0;
bigint_adjust(&xl);
xh.wordv = a->wordv+n;
xh.length_B = a->length_B-n;
xh.length_W = a->length_W-n;
xh.info = 0;
}
if(b->length_B<=n){
if(b->length_W<=n){
yh.info=0;
yh.length_B = 0;
yl.length_B = b->length_B;
yh.length_W = 0;
yl.length_W = b->length_W;
yl.info = b->info;
}else{
yl.length_B=n;
yl.length_W=n;
yl.info = 0;
bigint_adjust(&yl);
yh.wordv = b->wordv+n;
yh.length_B = b->length_B-n;
yh.length_W = b->length_W-n;
yh.info = 0;
}
/* now we have split up a and b */
@ -501,32 +501,32 @@ void bigint_mul_s(bigint_t* dest, const bigint_t* a, const bigint_t* b){
/* 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){
if(a->length_W<=4){
uint64_t r=0;
memcpy(&r, a->wordv, a->length_B);
memcpy(&r, a->wordv, a->length_W);
r = r*r;
memcpy(dest->wordv, &r, 2*a->length_B);
memcpy(dest->wordv, &r, 2*a->length_W);
SET_POS(dest);
dest->length_B=2*a->length_B;
dest->length_W=2*a->length_W;
bigint_adjust(dest);
return;
}
if(dest==a){
bigint_t d;
uint8_t d_b[a->length_B*2];
uint8_t d_b[a->length_W*2];
d.wordv = d_b;
bigint_square(&d, a);
bigint_copy(dest, &d);
return;
}
uint16_t n;
n=(a->length_B+1)/2;
n=(a->length_W+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;
xl.length_W = n;
xh.wordv = a->wordv+n;
xh.length_B = a->length_B-n;
xh.length_W = a->length_W-n;
tmp.wordv = buffer;
bigint_square(dest, &xl);
bigint_square(&tmp, &xh);
@ -540,12 +540,12 @@ void bigint_square(bigint_t* dest, const bigint_t* a){
void bigint_sub_u_bitscale(bigint_t* a, const bigint_t* b, uint16_t bitscale){
bigint_t tmp;
uint8_t tmp_b[b->length_B+1];
uint8_t tmp_b[b->length_W+1];
uint16_t i,j,byteshift=bitscale/8;
uint8_t borrow=0;
int16_t t;
if(a->length_B < b->length_B+byteshift){
if(a->length_W < b->length_W+byteshift){
bigint_set_zero(a);
return;
}
@ -554,7 +554,7 @@ void bigint_sub_u_bitscale(bigint_t* a, const bigint_t* b, uint16_t bitscale){
bigint_copy(&tmp, b);
bigint_shiftleft(&tmp, bitscale&7);
for(j=0,i=byteshift; i<tmp.length_B+byteshift; ++i, ++j){
for(j=0,i=byteshift; i<tmp.length_W+byteshift; ++i, ++j){
t = a->wordv[i] - tmp.wordv[j] - borrow;
a->wordv[i] = (uint8_t)t;
if(t<0){
@ -564,7 +564,7 @@ void bigint_sub_u_bitscale(bigint_t* a, const bigint_t* b, uint16_t bitscale){
}
}
while(borrow){
if(i+1 > a->length_B){
if(i+1 > a->length_W){
bigint_set_zero(a);
return;
}
@ -583,13 +583,13 @@ void bigint_reduce(bigint_t* a, const bigint_t* r){
// bigint_adjust(r);
uint8_t rfbs = GET_FBS(r);
if(r->length_B==0 || a->length_B==0){
if(r->length_W==0 || a->length_W==0){
return;
}
while(a->length_B > r->length_B){
bigint_sub_u_bitscale(a, r, (a->length_B-r->length_B)*8+GET_FBS(a)-rfbs-1);
while(a->length_W > r->length_W){
bigint_sub_u_bitscale(a, r, (a->length_W-r->length_W)*8+GET_FBS(a)-rfbs-1);
}
while((GET_FBS(a) > rfbs+1) && (a->length_B == r->length_B)){
while((GET_FBS(a) > rfbs+1) && (a->length_W == r->length_W)){
bigint_sub_u_bitscale(a, r, GET_FBS(a)-rfbs-1);
}
while(bigint_cmp_u(a,r)>=0){
@ -603,12 +603,12 @@ void bigint_reduce(bigint_t* a, const bigint_t* r){
/* calculate dest = a**exp % r */
/* using square&multiply */
void bigint_expmod_u(bigint_t* dest, const bigint_t* a, const bigint_t* exp, const bigint_t* r){
if(a->length_B==0 || r->length_B==0){
if(a->length_W==0 || r->length_W==0){
return;
}
bigint_t res, base;
uint8_t base_b[MAX(a->length_B,r->length_B*2)], res_b[r->length_B*2];
uint8_t base_b[MAX(a->length_W,r->length_W*2)], res_b[r->length_W*2];
uint16_t i;
uint8_t j, t;
res.wordv = res_b;
@ -616,10 +616,10 @@ void bigint_expmod_u(bigint_t* dest, const bigint_t* a, const bigint_t* exp, con
bigint_copy(&base, a);
bigint_reduce(&base, r);
res.wordv[0]=1;
res.length_B=1;
res.length_W=1;
res.info = 0;
bigint_adjust(&res);
for(i=0; i+1<exp->length_B; ++i){
for(i=0; i+1<exp->length_W; ++i){
t=exp->wordv[i];
for(j=0; j<8; ++j){
if(t&1){
@ -650,29 +650,29 @@ void bigint_expmod_u(bigint_t* dest, const bigint_t* a, const bigint_t* exp, con
void bigint_gcdext(bigint_t* gcd, bigint_t* a, bigint_t* b, const bigint_t* x, const bigint_t* y){
bigint_t g, x_, y_, u, v, a_, b_, c_, d_;
volatile uint16_t i=0;
if(x->length_B==0 || y->length_B==0){
if(x->length_W==0 || y->length_W==0){
return;
}
while(x->wordv[i]==0 && y->wordv[i]==0){
++i;
}
uint8_t g_b[i+2], x_b[x->length_B-i], y_b[y->length_B-i];
uint8_t u_b[x->length_B-i], v_b[y->length_B-i];
uint8_t a_b[y->length_B+2], c_b[y->length_B+2];
uint8_t b_b[x->length_B+2], d_b[x->length_B+2];
uint8_t g_b[i+2], x_b[x->length_W-i], y_b[y->length_W-i];
uint8_t u_b[x->length_W-i], v_b[y->length_W-i];
uint8_t a_b[y->length_W+2], c_b[y->length_W+2];
uint8_t b_b[x->length_W+2], d_b[x->length_W+2];
g.wordv = g_b;
x_.wordv = x_b;
y_.wordv = y_b;
memset(g_b, 0, i);
g_b[i]=1;
g.length_B = i+1;
g.length_W = i+1;
g.info=0;
x_.info = y_.info = 0;
x_.length_B = x->length_B-i;
y_.length_B = y->length_B-i;
memcpy(x_.wordv, x->wordv+i, x_.length_B);
memcpy(y_.wordv, y->wordv+i, y_.length_B);
x_.length_W = x->length_W-i;
y_.length_W = y->length_W-i;
memcpy(x_.wordv, x->wordv+i, x_.length_W);
memcpy(y_.wordv, y->wordv+i, y_.length_W);
for(i=0; (x_.wordv[0]&(1<<i))==0 && (y_.wordv[0]&(1<<i))==0; ++i){
}
@ -694,10 +694,10 @@ void bigint_gcdext(bigint_t* gcd, bigint_t* a, bigint_t* b, const bigint_t* x, c
bigint_copy(&u, &x_);
bigint_copy(&v, &y_);
a_.wordv[0] = 1;
a_.length_B = 1;
a_.length_W = 1;
a_.info = 0;
d_.wordv[0] = 1;
d_.length_B = 1;
d_.length_W = 1;
d_.info = 0;
bigint_set_zero(&b_);
bigint_set_zero(&c_);
@ -730,7 +730,7 @@ void bigint_gcdext(bigint_t* gcd, bigint_t* a, bigint_t* b, const bigint_t* x, c
bigint_sub_s(&c_, &c_, &a_);
bigint_sub_s(&d_, &d_, &b_);
}
}while(u.length_B);
}while(u.length_W);
if(gcd){
bigint_mul_s(gcd, &v, &g);
}
@ -756,7 +756,7 @@ void bigint_inverse(bigint_t* dest, const bigint_t* a, const bigint_t* m){
void bigint_changeendianess(bigint_t* a){
uint8_t t, *p, *q;
p = a->wordv;
q = p+a->length_B-1;
q = p+a->length_W-1;
while(p<q){
t = *p;
*p = *q;

278
bigint/bigint.c
View File

@ -61,16 +61,16 @@
/******************************************************************************/
void bigint_adjust(bigint_t* a){
while(a->length_B!=0 && a->wordv[a->length_B-1]==0){
a->length_B--;
while(a->length_W!=0 && a->wordv[a->length_W-1]==0){
a->length_W--;
}
if(a->length_B==0){
if(a->length_W==0){
a->info=0;
return;
}
bigint_word_t t;
uint8_t i = BIGINT_WORD_SIZE-1;
t = a->wordv[a->length_B-1];
t = a->wordv[a->length_W-1];
while((t&(1L<<(BIGINT_WORD_SIZE-1)))==0 && i){
t<<=1;
i--;
@ -81,25 +81,25 @@ void bigint_adjust(bigint_t* a){
/******************************************************************************/
uint16_t bigint_length_b(const bigint_t* a){
if(!a->length_B || a->length_B==0){
if(!a->length_W || a->length_W==0){
return 0;
}
return (a->length_B-1) * BIGINT_WORD_SIZE + GET_FBS(a);
return (a->length_W-1) * BIGINT_WORD_SIZE + GET_FBS(a);
}
/******************************************************************************/
uint16_t bigint_length_B(const bigint_t* a){
return a->length_B * sizeof(bigint_word_t);
return a->length_W * sizeof(bigint_word_t);
}
/******************************************************************************/
uint32_t bigint_get_first_set_bit(const bigint_t* a){
if(a->length_B==0){
if(a->length_W==0){
return (uint32_t)(-1);
}
return (a->length_B-1)*sizeof(bigint_word_t)*8+GET_FBS(a);
return (a->length_W-1)*sizeof(bigint_word_t)*8+GET_FBS(a);
}
@ -109,10 +109,10 @@ uint32_t bigint_get_last_set_bit(const bigint_t* a){
uint32_t r=0;
uint8_t b=0;
bigint_word_t x=1;
if(a->length_B==0){
if(a->length_W==0){
return (uint32_t)(-1);
}
while(a->wordv[r]==0 && r<a->length_B){
while(a->wordv[r]==0 && r<a->length_W){
++r;
}
if(a->wordv[r] == 0){
@ -128,8 +128,8 @@ uint32_t bigint_get_last_set_bit(const bigint_t* a){
/******************************************************************************/
void bigint_copy(bigint_t* dest, const bigint_t* src){
memcpy(dest->wordv, src->wordv, src->length_B*sizeof(bigint_word_t));
dest->length_B = src->length_B;
memcpy(dest->wordv, src->wordv, src->length_W*sizeof(bigint_word_t));
dest->length_W = src->length_W;
dest->info = src->info;
}
@ -139,16 +139,16 @@ 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){
uint16_t i;
bigint_wordplus_t t = 0LL;
if(a->length_B < b->length_B){
if(a->length_W < b->length_W){
XCHG_PTR(a,b);
}
for(i = 0; i < b->length_B; ++i){
for(i = 0; i < b->length_W; ++i){
t += a->wordv[i];
t += b->wordv[i];
dest->wordv[i] = (bigint_word_t)t;
t >>= BIGINT_WORD_SIZE;
}
for(; i < a->length_B; ++i){
for(; i < a->length_W; ++i){
t += a->wordv[i];
dest->wordv[i] = (bigint_word_t)t;
t >>= BIGINT_WORD_SIZE;
@ -156,7 +156,7 @@ void bigint_add_u(bigint_t* dest, const bigint_t* a, const bigint_t* b){
if(t){
dest->wordv[i++] = (bigint_word_t)t;
}
dest->length_B = i;
dest->length_W = i;
bigint_adjust(dest);
}
@ -164,7 +164,7 @@ void bigint_add_u(bigint_t* dest, const bigint_t* a, const bigint_t* b){
/* this should be implemented in assembly */
void bigint_add_scale_u(bigint_t* dest, const bigint_t* a, uint16_t scale){
if(a->length_B == 0){
if(a->length_W == 0){
return;
}
if(scale == 0){
@ -181,47 +181,47 @@ void bigint_add_scale_u(bigint_t* dest, const bigint_t* a, uint16_t scale){
cli_putc(')');
#endif
#if BIGINT_WORD_SIZE == 8
if(scale >= dest->length_B){
if(scale >= dest->length_W){
#if DEBUG_ADD_SCALE
cli_putstr_P(PSTR("\r\n\tpath one"));
#endif
memset(dest->wordv + dest->length_B, 0, scale - dest->length_B);
memcpy(dest->wordv + scale, a->wordv, a->length_B);
memset(dest->wordv + dest->length_W, 0, scale - dest->length_W);
memcpy(dest->wordv + scale, a->wordv, a->length_W);
dest->info = a->info;
dest->length_B = a->length_B + scale;
dest->length_W = a->length_W + scale;
return;
}
bigint_t x;
#if DEBUG_ADD_SCALE
cli_putstr_P(PSTR("\r\n\tpath two"));
#endif
x.length_B = dest->length_B - scale;
x.length_W = dest->length_W - scale;
x.info = dest->info;
x.wordv = dest->wordv + scale;
bigint_add_u(&x, &x, a);
dest->length_B = x.length_B + scale;
dest->length_W = x.length_W + scale;
dest->info = 0;
bigint_adjust(dest);
#else
bigint_t s;
uint16_t word_shift = scale / sizeof(bigint_word_t), byte_shift = scale % sizeof(bigint_word_t);
bigint_word_t bv[a->length_B + 1];
bigint_word_t bv[a->length_W + 1];
s.wordv = bv;
bv[0] = bv[a->length_B] = 0;
memcpy((uint8_t*)bv + byte_shift, a->wordv, a->length_B * sizeof(bigint_word_t));
s.length_B = a->length_B + 1;
bv[0] = bv[a->length_W] = 0;
memcpy((uint8_t*)bv + byte_shift, a->wordv, a->length_W * sizeof(bigint_word_t));
s.length_W = a->length_W + 1;
bigint_adjust(&s);
memset(dest->wordv + dest->length_B, 0, (MAX(dest->length_B, s.length_B + word_shift) - dest->length_B) * sizeof(bigint_word_t));
memset(dest->wordv + dest->length_W, 0, (MAX(dest->length_W, s.length_W + word_shift) - dest->length_W) * sizeof(bigint_word_t));
x.wordv = dest->wordv + word_shift;
x.length_B = dest->length_B - word_shift;
if((int16_t)x.length_B < 0){
x.length_B = 0;
x.length_W = dest->length_W - word_shift;
if((int16_t)x.length_W < 0){
x.length_W = 0;
x.info = 0;
}else{
x.info = dest->info;
}
bigint_add_u(&x, &x, &s);
dest->length_B = x.length_B + word_shift;
dest->length_W = x.length_W + word_shift;
dest->info = 0;
bigint_adjust(dest);
#endif
@ -232,29 +232,29 @@ void bigint_add_scale_u(bigint_t* dest, const bigint_t* a, uint16_t scale){
bigint_word_t *dst;
bigint_wordplus_t t=0;
scale_w = (scale+sizeof(bigint_word_t)-1)/sizeof(bigint_word_t);
if(scale>dest->length_B*sizeof(bigint_word_t)){
memset(((uint8_t*)dest->wordv)+dest->length_B*sizeof(bigint_word_t), 0, scale-dest->length_B*sizeof(bigint_word_t));
if(scale>dest->length_W*sizeof(bigint_word_t)){
memset(((uint8_t*)dest->wordv)+dest->length_W*sizeof(bigint_word_t), 0, scale-dest->length_W*sizeof(bigint_word_t));
}
// a->wordv = (const uint32_t*)(((uint8_t*)a->wordv)+(scale&3));
dst = dest->wordv + (scale&(sizeof(bigint_word_t)-1));
for(i=scale/sizeof(bigint_word_t); i<a->length_B+scale_w; ++i,++j){
for(i=scale/sizeof(bigint_word_t); i<a->length_W+scale_w; ++i,++j){
t += a->wordv[j];
if(dest->length_B>i){
if(dest->length_W>i){
t += dst[i];
}
dst[i] = (bigint_word_t)t;
t>>=BIGINT_WORD_SIZE;
}
while(t){
if(dest->length_B>i){
if(dest->length_W>i){
t += dst[i];
}
dst[i] = (bigint_word_t)t;
t>>=BIGINT_WORD_SIZE;
++i;
}
if(dest->length_B < i){
dest->length_B = i;
if(dest->length_W < i){
dest->length_W = i;
}
bigint_adjust(dest);
*/
@ -273,12 +273,12 @@ void bigint_sub_u(bigint_t* dest, const bigint_t* a, const bigint_t* b){
bigint_set_zero(dest);
return;
}
if(b->length_B==0){
if(b->length_W==0){
bigint_copy(dest, a);
SET_POS(dest);
return;
}
if(a->length_B==0){
if(a->length_W==0){
bigint_copy(dest, b);
SET_NEG(dest);
return;
@ -288,9 +288,9 @@ void bigint_sub_u(bigint_t* dest, const bigint_t* a, const bigint_t* b){
SET_NEG(dest);
return;
}
for(i=0; i < a->length_B; ++i){
for(i=0; i < a->length_W; ++i){
t = a->wordv[i];
if(i < b->length_B){
if(i < b->length_W){
t -= b->wordv[i];
}
t -= borrow;
@ -302,24 +302,24 @@ void bigint_sub_u(bigint_t* dest, const bigint_t* a, const bigint_t* b){
}
}
SET_POS(dest);
dest->length_B = i;
dest->length_W = i;
bigint_adjust(dest);
}
/******************************************************************************/
int8_t bigint_cmp_u(const bigint_t* a, const bigint_t* b){
if(a->length_B > b->length_B){
if(a->length_W > b->length_W){
return 1;
}
if(a->length_B < b->length_B){
if(a->length_W < b->length_W){
return -1;
}
if(a->length_B==0){
if(a->length_W==0){
return 0;
}
uint16_t i;
i = a->length_B-1;
i = a->length_W-1;
do{
if(a->wordv[i] != b->wordv[i]){
if(a->wordv[i] > b->wordv[i]){
@ -389,7 +389,7 @@ 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){
uint8_t s;
if(a->length_B==0 && b->length_B==0){
if(a->length_W==0 && b->length_W==0){
return 0;
}
s = GET_SIGN(a)?2:0;
@ -426,14 +426,14 @@ void bigint_shiftleft(bigint_t* a, uint16_t shift){
}
byteshift = shift / 8;
bitshift = shift & 7;
memset(&a->wordv[a->length_B], 0x00, byteshift);
memset(&a->wordv[a->length_W], 0x00, byteshift);
if(byteshift){
memmove(((uint8_t*)a->wordv)+byteshift, a->wordv, a->length_B * sizeof(bigint_word_t));
memmove(((uint8_t*)a->wordv)+byteshift, a->wordv, a->length_W * sizeof(bigint_word_t));
memset(a->wordv, 0, byteshift);
}
if(bitshift != 0){
p = (bigint_word_t*)((uint8_t*)a->wordv + byteshift / sizeof(bigint_word_t));
words_to_shift = a->length_B + ((byteshift % sizeof(bigint_word_t))?1:0);
words_to_shift = a->length_W + ((byteshift % sizeof(bigint_word_t))?1:0);
/* XXX */
for(i = 0; i < words_to_shift; ++i){
t |= ((bigint_wordplus_t)p[i]) << bitshift;
@ -442,7 +442,7 @@ void bigint_shiftleft(bigint_t* a, uint16_t shift){
}
p[i] = (bigint_word_t)t;
}
a->length_B += (shift + BIGINT_WORD_SIZE - 1) / BIGINT_WORD_SIZE;
a->length_W += (shift + BIGINT_WORD_SIZE - 1) / BIGINT_WORD_SIZE;
bigint_adjust(a);
}
@ -455,23 +455,23 @@ void bigint_shiftright(bigint_t* a, uint16_t shift){
bigint_wordplus_t t=0;
byteshift = shift/8;
bitshift = shift&7;
if(byteshift >= a->length_B * sizeof(bigint_word_t)){ /* we would shift out more than we have */
if(byteshift >= a->length_W * sizeof(bigint_word_t)){ /* we would shift out more than we have */
bigint_set_zero(a);
return;
}
if(byteshift == a->length_B * sizeof(bigint_word_t) - 1 && bitshift > GET_FBS(a)){
if(byteshift == a->length_W * sizeof(bigint_word_t) - 1 && bitshift > GET_FBS(a)){
bigint_set_zero(a);
return;
}
if(byteshift){
memmove(a->wordv, (uint8_t*)a->wordv + byteshift, a->length_B * sizeof(bigint_word_t) - byteshift);
memset((uint8_t*)a->wordv + a->length_B * sizeof(bigint_word_t) - byteshift, 0, byteshift);
memmove(a->wordv, (uint8_t*)a->wordv + byteshift, a->length_W * sizeof(bigint_word_t) - byteshift);
memset((uint8_t*)a->wordv + a->length_W * sizeof(bigint_word_t) - byteshift, 0, byteshift);
}
byteshift /= sizeof(bigint_word_t);
a->length_B -= (byteshift + sizeof(bigint_word_t) - 1) / sizeof(bigint_word_t);
if(bitshift != 0 && a->length_B){
a->length_W -= (byteshift + sizeof(bigint_word_t) - 1) / sizeof(bigint_word_t);
if(bitshift != 0 && a->length_W){
/* shift to the right */
i = a->length_B - 1;
i = a->length_W - 1;
do{
t |= ((bigint_wordplus_t)(a->wordv[i])) << (BIGINT_WORD_SIZE - bitshift);
a->wordv[i] = (bigint_word_t)(t >> BIGINT_WORD_SIZE);
@ -485,7 +485,7 @@ void bigint_shiftright(bigint_t* a, uint16_t shift){
void bigint_xor(bigint_t* dest, const bigint_t* a){
uint16_t i;
for(i=0; i<a->length_B; ++i){
for(i=0; i<a->length_W; ++i){
dest->wordv[i] ^= a->wordv[i];
}
bigint_adjust(dest);
@ -494,7 +494,7 @@ void bigint_xor(bigint_t* dest, const bigint_t* a){
/******************************************************************************/
void bigint_set_zero(bigint_t* a){
a->length_B=0;
a->length_W=0;
}
/******************************************************************************/
@ -502,55 +502,55 @@ void bigint_set_zero(bigint_t* a){
/* 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){
if(a->length_W==0 || b->length_W==0){
bigint_set_zero(dest);
return;
}
if(dest==a || dest==b){
bigint_t d;
bigint_word_t d_b[a->length_B + b->length_B];
bigint_word_t d_b[a->length_W + b->length_W];
d.wordv = d_b;
bigint_mul_u(&d, a, b);
bigint_copy(dest, &d);
return;
}
if(a->length_B==1 || b->length_B==1){
if(a->length_B != 1){
if(a->length_W==1 || b->length_W==1){
if(a->length_W != 1){
XCHG_PTR(a,b);
}
bigint_wordplus_t t=0;
uint16_t i;
bigint_word_t x = a->wordv[0];
for(i=0; i < b->length_B; ++i){
for(i=0; i < b->length_W; ++i){
t += ((bigint_wordplus_t)b->wordv[i]) * ((bigint_wordplus_t)x);
dest->wordv[i] = (bigint_word_t)t;
t>>=BIGINT_WORD_SIZE;
}
dest->wordv[i] = (bigint_word_t)t;
dest->length_B = i+1;
dest->length_W = i+1;
dest->info = 0;
bigint_adjust(dest);
return;
}
if(a->length_B * sizeof(bigint_word_t) <= 4 && b->length_B * sizeof(bigint_word_t) <= 4){
if(a->length_W * sizeof(bigint_word_t) <= 4 && b->length_W * sizeof(bigint_word_t) <= 4){
uint32_t p=0, q=0;
uint64_t r;
memcpy(&p, a->wordv, a->length_B*sizeof(bigint_word_t));
memcpy(&q, b->wordv, b->length_B*sizeof(bigint_word_t));
memcpy(&p, a->wordv, a->length_W*sizeof(bigint_word_t));
memcpy(&q, b->wordv, b->length_W*sizeof(bigint_word_t));
r = (uint64_t)p * (uint64_t)q;
memcpy(dest->wordv, &r, (dest->length_B = a->length_B + b->length_B)*sizeof(bigint_word_t));
memcpy(dest->wordv, &r, (dest->length_W = a->length_W + b->length_W)*sizeof(bigint_word_t));
bigint_adjust(dest);
return;
}
#if BIGINT_WORD_SIZE == 8
if(a->length_B <= 4 || b->length_B <= 4){
if(a->length_B > 4){
if(a->length_W <= 4 || b->length_W <= 4){
if(a->length_W > 4){
XCHG_PTR(a,b);
}
uint32_t x = 0, y = 0;
uint16_t j = b->length_B / 4, idx = 0;
uint16_t j = b->length_W / 4, idx = 0;
uint64_t r = 0;
memcpy(&x, a->wordv, a->length_B);
memcpy(&x, a->wordv, a->length_W);
while(j){
r += (uint64_t)((uint32_t*)b->wordv)[idx] * (uint64_t)x;
((uint32_t*)dest->wordv)[idx] = (uint32_t)r;
@ -559,44 +559,44 @@ void bigint_mul_u(bigint_t* dest, const bigint_t* a, const bigint_t* b){
--j;
}
idx *= 4;
memcpy(&y, b->wordv + idx, b->length_B - idx);
memcpy(&y, b->wordv + idx, b->length_W - idx);
r += (uint64_t)y * (uint64_t)x;
while(r){
dest->wordv[idx++] = (uint8_t)r;
r >>= 8;
}
dest->length_B = idx;
dest->length_W = idx;
bigint_adjust(dest);
return;
}
#endif
/* split a in xh & xl; split b in yh & yl */
const uint16_t n = (MAX(a->length_B, b->length_B)+1)/2;
const uint16_t n = (MAX(a->length_W, b->length_W)+1)/2;
bigint_t xl, xh, yl, yh;
xl.wordv = a->wordv;
yl.wordv = b->wordv;
if(a->length_B <= n){
if(a->length_W <= n){
bigint_set_zero(&xh);
xl.length_B = a->length_B;
xl.length_W = a->length_W;
xl.info = a->info;
}else{
xl.length_B = n;
xl.length_W = n;
xl.info = 0;
bigint_adjust(&xl);
xh.wordv = &(a->wordv[n]);
xh.length_B = a->length_B-n;
xh.length_W = a->length_W-n;
xh.info = a->info;
}
if(b->length_B <= n){
if(b->length_W <= n){
bigint_set_zero(&yh);
yl.length_B = b->length_B;
yl.length_W = b->length_W;
yl.info = b->info;
}else{
yl.length_B = n;
yl.length_W = n;
yl.info = 0;
bigint_adjust(&yl);
yh.wordv = &(b->wordv[n]);
yh.length_B = b->length_B-n;
yh.length_W = b->length_W-n;
yh.info = b->info;
}
/* now we have split up a and b */
@ -669,33 +669,33 @@ void bigint_mul_s(bigint_t* dest, const bigint_t* a, const bigint_t* b){
/* 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 * sizeof(bigint_word_t) <= 4){
if(a->length_W * sizeof(bigint_word_t) <= 4){
uint64_t r = 0;
memcpy(&r, a->wordv, a->length_B * sizeof(bigint_word_t));
memcpy(&r, a->wordv, a->length_W * sizeof(bigint_word_t));
r = r * r;
memcpy(dest->wordv, &r, 2 * a->length_B*sizeof(bigint_word_t));
memcpy(dest->wordv, &r, 2 * a->length_W*sizeof(bigint_word_t));
SET_POS(dest);
dest->length_B = 2 * a->length_B;
dest->length_W = 2 * a->length_W;
bigint_adjust(dest);
return;
}
if(dest==a){
bigint_t d;
bigint_word_t d_b[a->length_B * 2];
bigint_word_t d_b[a->length_W * 2];
d.wordv = d_b;
bigint_square(&d, a);
bigint_copy(dest, &d);
return;
}
uint16_t n;
n = (a->length_B + 1) / 2;
n = (a->length_W + 1) / 2;
bigint_t xh, xl, tmp; /* x-high, x-low, temp */
bigint_word_t buffer[2 * n + 1];
xl.wordv = a->wordv;
xl.length_B = n;
xl.length_W = n;
xl.info = 0;
xh.wordv = &(a->wordv[n]);
xh.length_B = a->length_B - n;
xh.length_W = a->length_W - n;
xh.info = a->info;
bigint_adjust(&xl);
tmp.wordv = buffer;
@ -721,10 +721,10 @@ void bigint_square(bigint_t* dest, const bigint_t* a){
/******************************************************************************/
void bigint_sub_u_bitscale(bigint_t* a, const bigint_t* b, uint16_t bitscale){
bigint_t tmp, x;
bigint_word_t tmp_b[b->length_B + 1];
bigint_word_t tmp_b[b->length_W + 1];
const uint16_t word_shift = bitscale / BIGINT_WORD_SIZE;
if(a->length_B < b->length_B + word_shift){
if(a->length_W < b->length_W + word_shift){
#if DEBUG
cli_putstr("\r\nDBG: *bang*\r\n");
#endif
@ -739,10 +739,10 @@ void bigint_sub_u_bitscale(bigint_t* a, const bigint_t* b, uint16_t bitscale){
x.info = a->info;
x.wordv = &(a->wordv[word_shift]);
x.length_B = a->length_B - word_shift;
x.length_W = a->length_W - word_shift;
bigint_sub_u(&x, &x, &tmp);
a->length_B = x.length_B + word_shift;
a->length_W = x.length_W + word_shift;
bigint_adjust(a);
return;
}
@ -755,40 +755,40 @@ void bigint_reduce(bigint_t* a, const bigint_t* r){
#if DEBUG
cli_putstr("\r\nDBG: (a) = "); bigint_print_hex(a);
#endif
if(r->length_B==0 || a->length_B==0){
if(r->length_W==0 || a->length_W==0){
return;
}
if((r->length_B*sizeof(bigint_word_t)<=4) && (a->length_B*sizeof(bigint_word_t)<=4)){
if((r->length_W*sizeof(bigint_word_t)<=4) && (a->length_W*sizeof(bigint_word_t)<=4)){
uint32_t p=0, q=0;
memcpy(&p, a->wordv, a->length_B*sizeof(bigint_word_t));
memcpy(&q, r->wordv, r->length_B*sizeof(bigint_word_t));
memcpy(&p, a->wordv, a->length_W*sizeof(bigint_word_t));
memcpy(&q, r->wordv, r->length_W*sizeof(bigint_word_t));
p %= q;
memcpy(a->wordv, &p, a->length_B*sizeof(bigint_word_t));
memcpy(a->wordv, &p, a->length_W*sizeof(bigint_word_t));
bigint_adjust(a);
// cli_putstr("\r\nDBG: (0) = "); bigint_print_hex(a);
return;
}
uint16_t shift;
while(a->length_B > r->length_B){
shift = (a->length_B - r->length_B) * 8 * sizeof(bigint_word_t) + GET_FBS(a) - rfbs - 1;
while(a->length_W > r->length_W){
shift = (a->length_W - r->length_W) * 8 * sizeof(bigint_word_t) + GET_FBS(a) - rfbs - 1;
/*
if((a->wordv[a->length_B-1] & ((1LL<<GET_FBS(a)) - 1)) > r->wordv[r->length_B-1]){
if((a->wordv[a->length_W-1] & ((1LL<<GET_FBS(a)) - 1)) > r->wordv[r->length_W-1]){
// cli_putc('~');
cli_putstr("\r\n ~ [a] = ");
cli_hexdump_rev(&a->wordv[a->length_B-1], 4);
cli_hexdump_rev(&a->wordv[a->length_W-1], 4);
cli_putstr(" [r] = ");
cli_hexdump_rev(&r->wordv[r->length_B-1], 4);
cli_hexdump_rev(&r->wordv[r->length_W-1], 4);
shift += 1;
}
*/
// cli_putstr("\r\nDBG: (p) shift = "); cli_hexdump_rev(&shift, 2);
// cli_putstr(" a_len = "); cli_hexdump_rev(&a->length_B, 2);
// cli_putstr(" r_len = "); cli_hexdump_rev(&r->length_B, 2);
// cli_putstr(" a_len = "); cli_hexdump_rev(&a->length_W, 2);
// cli_putstr(" r_len = "); cli_hexdump_rev(&r->length_W, 2);
// uart_flush(0);
bigint_sub_u_bitscale(a, r, shift);
// cli_putstr("\r\nDBG: (1) = "); bigint_print_hex(a);
}
while((GET_FBS(a) > rfbs) && (a->length_B == r->length_B)){
while((GET_FBS(a) > rfbs) && (a->length_W == r->length_W)){
shift = GET_FBS(a)-rfbs-1;
// cli_putstr("\r\nDBG: (2a) = "); bigint_print_hex(a);
// cli_putstr("\r\nDBG: (q) shift = "); cli_hexdump_rev(&shift, 2);
@ -810,12 +810,12 @@ void bigint_reduce(bigint_t* a, const bigint_t* r){
/* calculate dest = a**exp % r */
/* using square&multiply */
void bigint_expmod_u(bigint_t* dest, const bigint_t* a, const bigint_t* exp, const bigint_t* r){
if(a->length_B==0 || r->length_B==0){
if(a->length_W==0 || r->length_W==0){
return;
}
bigint_t res, base;
bigint_word_t t, base_b[MAX(a->length_B,r->length_B)], res_b[r->length_B*2];
bigint_word_t t, base_b[MAX(a->length_W,r->length_W)], res_b[r->length_W*2];
uint16_t i;
uint8_t j;
// uint16_t *xaddr = &i;
@ -828,16 +828,16 @@ void bigint_expmod_u(bigint_t* dest, const bigint_t* a, const bigint_t* exp, con
// cli_putstr("\r\npost-copy");
bigint_reduce(&base, r);
res.wordv[0]=1;
res.length_B=1;
res.length_W=1;
res.info = 0;
bigint_adjust(&res);
if(exp->length_B == 0){
if(exp->length_W == 0){
bigint_copy(dest, &res);
return;
}
uint8_t flag = 0;
t=exp->wordv[exp->length_B - 1];
for(i=exp->length_B; i > 0; --i){
t=exp->wordv[exp->length_W - 1];
for(i=exp->length_W; i > 0; --i){
t = exp->wordv[i - 1];
for(j=BIGINT_WORD_SIZE; j > 0; --j){
if(!flag){
@ -873,14 +873,14 @@ void bigint_expmod_u(bigint_t* dest, const bigint_t* a, const bigint_t* exp, con
void bigint_gcdext(bigint_t* gcd, bigint_t* a, bigint_t* b, const bigint_t* x, const bigint_t* y){
bigint_t g, x_, y_, u, v, a_, b_, c_, d_;
uint16_t i=0;
if(x->length_B==0 || y->length_B==0){
if(x->length_W==0 || y->length_W==0){
return;
}
if(x->length_B==1 && x->wordv[0]==1){
gcd->length_B = 1;
if(x->length_W==1 && x->wordv[0]==1){
gcd->length_W = 1;
gcd->wordv[0] = 1;
if(a){
a->length_B = 1;
a->length_W = 1;
a->wordv[0] = 1;
SET_POS(a);
bigint_adjust(a);
@ -890,11 +890,11 @@ void bigint_gcdext(bigint_t* gcd, bigint_t* a, bigint_t* b, const bigint_t* x, c
}
return;
}
if(y->length_B==1 && y->wordv[0]==1){
gcd->length_B = 1;
if(y->length_W==1 && y->wordv[0]==1){
gcd->length_W = 1;
gcd->wordv[0] = 1;
if(b){
b->length_B = 1;
b->length_W = 1;
b->wordv[0] = 1;
SET_POS(b);
bigint_adjust(b);
@ -908,23 +908,23 @@ void bigint_gcdext(bigint_t* gcd, bigint_t* a, bigint_t* b, const bigint_t* x, c
while(x->wordv[i]==0 && y->wordv[i]==0){
++i;
}
bigint_word_t g_b[i+2], x_b[x->length_B-i], y_b[y->length_B-i];
bigint_word_t u_b[x->length_B-i], v_b[y->length_B-i];
bigint_word_t a_b[y->length_B+2], c_b[y->length_B+2];
bigint_word_t b_b[x->length_B+2], d_b[x->length_B+2];
bigint_word_t g_b[i+2], x_b[x->length_W-i], y_b[y->length_W-i];
bigint_word_t u_b[x->length_W-i], v_b[y->length_W-i];
bigint_word_t a_b[y->length_W+2], c_b[y->length_W+2];
bigint_word_t b_b[x->length_W+2], d_b[x->length_W+2];
g.wordv = g_b;
x_.wordv = x_b;
y_.wordv = y_b;
memset(g_b, 0, i*sizeof(bigint_word_t));
g_b[i]=1;
g.length_B = i+1;
g.length_W = i+1;
g.info=0;
x_.info = y_.info = 0;
x_.length_B = x->length_B-i;
y_.length_B = y->length_B-i;
memcpy(x_.wordv, x->wordv+i, x_.length_B*sizeof(bigint_word_t));
memcpy(y_.wordv, y->wordv+i, y_.length_B*sizeof(bigint_word_t));
x_.length_W = x->length_W-i;
y_.length_W = y->length_W-i;
memcpy(x_.wordv, x->wordv+i, x_.length_W*sizeof(bigint_word_t));
memcpy(y_.wordv, y->wordv+i, y_.length_W*sizeof(bigint_word_t));
for(i=0; (x_.wordv[0]&(1<<i))==0 && (y_.wordv[0]&(1<<i))==0; ++i){
}
@ -947,10 +947,10 @@ void bigint_gcdext(bigint_t* gcd, bigint_t* a, bigint_t* b, const bigint_t* x, c
bigint_copy(&u, &x_);
bigint_copy(&v, &y_);
a_.wordv[0] = 1;
a_.length_B = 1;
a_.length_W = 1;
a_.info = 0;
d_.wordv[0] = 1;
d_.length_B = 1;
d_.length_W = 1;
d_.info = 0;
bigint_set_zero(&b_);
bigint_set_zero(&c_);
@ -986,7 +986,7 @@ void bigint_gcdext(bigint_t* gcd, bigint_t* a, bigint_t* b, const bigint_t* x, c
bigint_sub_s(&c_, &c_, &a_);
bigint_sub_s(&d_, &d_, &b_);
}
}while(u.length_B);
}while(u.length_W);
if(gcd){
bigint_mul_s(gcd, &v, &g);
}
@ -1012,7 +1012,7 @@ void bigint_inverse(bigint_t* dest, const bigint_t* a, const bigint_t* m){
void bigint_changeendianess(bigint_t* a){
uint8_t t, *p, *q;
p = (uint8_t*)(a->wordv);
q = p + a->length_B * sizeof(bigint_word_t) - 1;
q = p + a->length_W * sizeof(bigint_word_t) - 1;
while(p<q){
t = *p;
*p = *q;

2
bigint/bigint.h
View File

@ -38,7 +38,7 @@ typedef int16_t bigint_wordplus_signed_t;
#define BIGINT_FBS_MASK (BIGINT_WORD_SIZE-1) /* the last five 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;
uint16_t length_W;
uint8_t info;
bigint_word_t *wordv; /* word vector, pointing to the LSB */
}bigint_t;

20
bigint/bigint_io.c
View File

@ -24,7 +24,7 @@
#include <string.h>
void bigint_print_hex(const bigint_t* a){
if(a->length_B==0){
if(a->length_W==0){
cli_putc('0');
return;
}
@ -32,18 +32,18 @@ void bigint_print_hex(const bigint_t* a){
cli_putc('-');
}
// cli_putc((a->info&BIGINT_NEG_MASK)?'-':'+'); /* print sign */
/* if(a->wordv[a->length_B-1]<0x10){
cli_putc(hexdigit_tab_uc[a->wordv[a->length_B-1]]);
cli_hexdump_rev(a->wordv, a->length_B-1);
/* if(a->wordv[a->length_W-1]<0x10){
cli_putc(hexdigit_tab_uc[a->wordv[a->length_W-1]]);
cli_hexdump_rev(a->wordv, a->length_W-1);
} else {
*/
// cli_hexdump_rev(a->wordv, a->length_B*sizeof(bigint_word_t));
// cli_hexdump_rev(a->wordv, a->length_W*sizeof(bigint_word_t));
// }
uint32_t idx;
uint8_t print_zero=0;
uint8_t *p,x,y;
p = (uint8_t*)&(a->wordv[a->length_B-1])+sizeof(bigint_word_t)-1;
for(idx = a->length_B * sizeof(bigint_word_t); idx > 0; --idx){
p = (uint8_t*)&(a->wordv[a->length_W-1])+sizeof(bigint_word_t)-1;
for(idx = a->length_W * sizeof(bigint_word_t); idx > 0; --idx){
x = *p >> 4;
y = *p & 0xf;
if(x!=0 || print_zero!=0){
@ -98,7 +98,7 @@ uint8_t bigint_read_hex_echo(bigint_t* a){
uint16_t allocated=0;
uint8_t shift4=0;
uint16_t t, idx = 0;
a->length_B = 0;
a->length_W = 0;
a->wordv = NULL;
a->info = 0;
for(;;){
@ -140,9 +140,9 @@ uint8_t bigint_read_hex_echo(bigint_t* a){
/* we have to reverse the byte array */
uint8_t tmp;
uint8_t *p, *q;
a->length_B = (idx + sizeof(bigint_word_t)-1)/sizeof(bigint_word_t);
a->length_W = (idx + sizeof(bigint_word_t)-1)/sizeof(bigint_word_t);
p = (uint8_t*)(a->wordv);
q = (uint8_t*)a->wordv + a->length_B * sizeof(bigint_word_t) - 1;
q = (uint8_t*)a->wordv + a->length_W * sizeof(bigint_word_t) - 1;
while(q>p){
tmp = *p;
*p = *q;

10
dsa/dsa_key_blob.c
View File

@ -280,15 +280,15 @@ void load_dsa_key_blob(dsa_ctx_t* ctx){
return;
}
memcpy_P(ctx->priv.wordv, dsa_key_blob, ALL_LEN_B);
ctx->priv.length_B=PRIV_LEN_B;
ctx->priv.length_W=PRIV_LEN_B;
ctx->pub.wordv = ctx->priv.wordv+PRIV_LEN_B;
ctx->pub.length_B = PUB_LEN_B;
ctx->pub.length_W = PUB_LEN_B;
ctx->domain.p.wordv = ctx->priv.wordv+PRIV_LEN_B+PUB_LEN_B;
ctx->domain.p.length_B = P_LEN_B;
ctx->domain.p.length_W = P_LEN_B;
ctx->domain.q.wordv = ctx->priv.wordv+PRIV_LEN_B+PUB_LEN_B+P_LEN_B;
ctx->domain.q.length_B = Q_LEN_B;
ctx->domain.q.length_W = Q_LEN_B;
ctx->domain.g.wordv = ctx->priv.wordv+PRIV_LEN_B+PUB_LEN_B+P_LEN_B+Q_LEN_B;
ctx->domain.g.length_B = G_LEN_B;
ctx->domain.g.length_W = G_LEN_B;
bigint_changeendianess(&(ctx->priv));
bigint_changeendianess(&(ctx->pub));

12
dsa/dsa_sign.c
View File

@ -27,7 +27,7 @@
uint8_t dsa_sign_bigint(dsa_signature_t* s, const bigint_t* m,
const dsa_ctx_t* ctx, const bigint_t* k){
bigint_t tmp, tmp2;
uint8_t tmp_b[ctx->domain.p.length_B+5], tmp2_b[ctx->domain.q.length_B+5];
uint8_t tmp_b[ctx->domain.p.length_W+5], tmp2_b[ctx->domain.q.length_W+5];
tmp.wordv= tmp_b;
tmp2.wordv = tmp2_b;
bigint_expmod_u(&tmp, &(ctx->domain.g), k, &(ctx->domain.p));
@ -40,7 +40,7 @@ uint8_t dsa_sign_bigint(dsa_signature_t* s, const bigint_t* m,
bigint_reduce(&tmp, &(ctx->domain.q));
bigint_copy(&(s->s), &tmp);
if(s->s.length_B==0 || s->r.length_B==0){
if(s->s.length_W==0 || s->r.length_W==0){
return 1;
}
@ -51,20 +51,20 @@ uint8_t dsa_sign_message(dsa_signature_t* s, const void* m, uint16_t m_len_b,
const hfdesc_t* hash_desc, const dsa_ctx_t* ctx,
const rand_func_ptr_t rand_in){
bigint_t z, k;
uint8_t i, n_B = ctx->domain.q.length_B;
uint8_t i, n_B = ctx->domain.q.length_W;
uint8_t hash_value[(n_B>(hfal_hash_getHashsize(hash_desc)+7)/8)?n_B:(hfal_hash_getHashsize(hash_desc)+7)/8];
uint8_t k_b[n_B];
hfal_hash_mem(hash_desc, hash_value, m, m_len_b);
z.wordv = hash_value;
z.length_B = n_B;
z.length_W = n_B;
bigint_changeendianess(&z);
k.wordv = k_b;
k.length_B = n_B;
k.length_W = n_B;
do{
for(i=0; i<n_B; ++i){
k_b[i] = rand_in();
}
k.length_B = n_B;
k.length_W = n_B;
bigint_adjust(&k);
}while(dsa_sign_bigint(s, &z, ctx, &k));
cli_putstr_P(PSTR("\r\nsignature computed"));

10
dsa/dsa_verify.c
View File

@ -24,15 +24,15 @@
uint8_t dsa_verify_bigint(const dsa_signature_t* s, const bigint_t* m,
const dsa_ctx_t* ctx){
if(s->r.length_B==0 || s->s.length_B==0){
if(s->r.length_W==0 || s->s.length_W==0){
return DSA_SIGNATURE_FAIL;
}
if(bigint_cmp_u(&(s->r), &(ctx->domain.q))>=0 || bigint_cmp_u(&(s->s), &(ctx->domain.q))>=0){
return DSA_SIGNATURE_FAIL;
}
bigint_t w, u1, u2, v1, v2;
uint8_t w_b[ctx->domain.q.length_B], u1_b[ctx->domain.q.length_B*2], u2_b[ctx->domain.q.length_B*2];
uint8_t v1_b[ctx->domain.p.length_B*2], v2_b[ctx->domain.p.length_B];
uint8_t w_b[ctx->domain.q.length_W], u1_b[ctx->domain.q.length_W*2], u2_b[ctx->domain.q.length_W*2];
uint8_t v1_b[ctx->domain.p.length_W*2], v2_b[ctx->domain.p.length_W];
w.wordv = w_b;
u1.wordv = u1_b;
u2.wordv = u2_b;
@ -57,11 +57,11 @@ uint8_t dsa_verify_bigint(const dsa_signature_t* s, const bigint_t* m,
uint8_t dsa_verify_message(const dsa_signature_t* s, const void* m, uint16_t m_len_b,
const hfdesc_t* hash_desc, const dsa_ctx_t* ctx){
bigint_t z;
uint8_t n_B = ctx->domain.q.length_B;
uint8_t n_B = ctx->domain.q.length_W;
uint8_t hash_value[(hfal_hash_getHashsize(hash_desc)+7)/8];
hfal_hash_mem(hash_desc, hash_value, m, m_len_b);
z.wordv=hash_value;
z.length_B=n_B;
z.length_W=n_B;
bigint_changeendianess(&z);
bigint_adjust(&z);
return dsa_verify_bigint(s, &z, ctx);

18
rsa/rsa_basic.c
View File

@ -52,8 +52,8 @@ m = m2 + q * h
uint8_t rsa_dec_crt_mono(bigint_t* data, const rsa_privatekey_t* key){
bigint_t m1, m2;
m1.wordv = malloc((key->components[0].length_B /* + 1 */) * sizeof(bigint_word_t));
m2.wordv = malloc((key->components[1].length_B /* + 1 */) * sizeof(bigint_word_t));
m1.wordv = malloc((key->components[0].length_W /* + 1 */) * sizeof(bigint_word_t));
m2.wordv = malloc((key->components[1].length_W /* + 1 */) * sizeof(bigint_word_t));
if(!m1.wordv || !m2.wordv){
#if DEBUG
cli_putstr_P(PSTR("\r\nERROR: OOM!"));
@ -183,7 +183,7 @@ void rsa_os2ip(bigint_t* dest, const void* data, uint32_t length_B){
if(data){
memcpy(dest->wordv, data, length_B);
}
dest->length_B = length_B;
dest->length_W = length_B;
#else
uint8_t off;
off = (sizeof(bigint_word_t) - length_B % sizeof(bigint_word_t)) % sizeof(bigint_word_t);
@ -203,10 +203,10 @@ void rsa_os2ip(bigint_t* dest, const void* data, uint32_t length_B){
memset(dest->wordv, 0, off);
}
}
dest->length_B = (length_B + off) / sizeof(bigint_word_t);
dest->length_W = (length_B + off) / sizeof(bigint_word_t);
#if DEBUG
cli_putstr_P(PSTR("\r\nDBG: dest->length_B = 0x"));
cli_hexdump_rev(&(dest->length_B), 2);
cli_putstr_P(PSTR("\r\nDBG: dest->length_W = 0x"));
cli_hexdump_rev(&(dest->length_W), 2);
#endif
#endif
dest->info = 0;
@ -217,9 +217,9 @@ void rsa_os2ip(bigint_t* dest, const void* data, uint32_t length_B){
void rsa_i2osp(void* dest, bigint_t* src, uint16_t* out_length_B){
#if BIGINT_WORD_SIZE == 8
if(dest){
uint8_t *e = src->wordv + src->length_B;
uint8_t *e = src->wordv + src->length_W;
uint16_t i;
for(i=src->length_B; i>0; --i){
for(i=src->length_W; i>0; --i){
*((uint8_t*)dest) = *--e;
dest = (uint8_t*)dest + 1;
}
@ -227,7 +227,7 @@ void rsa_i2osp(void* dest, bigint_t* src, uint16_t* out_length_B){
bigint_changeendianess(src);
}
*out_length_B = src->length_B;
*out_length_B = src->length_W;
#else
*out_length_B = bigint_get_first_set_bit(src) / 8 + 1;
if(dest){

6
rsa/rsaes_oaep.c
View File

@ -72,7 +72,7 @@ uint8_t rsa_encrypt_oaep(void* dest, uint16_t* out_length,
cli_putstr("\r\n buffer_len = ");
cli_hexdump_rev(&buffer_len, 2);
cli_putstr("\r\n modulus_len = ");
cli_hexdump_rev(&key->modulus.length_B, 2);
cli_hexdump_rev(&key->modulus.length_W, 2);
#endif
uint8_t* buffer = (uint8_t*)dest;
uint8_t off;
@ -121,7 +121,7 @@ uint8_t rsa_encrypt_oaep(void* dest, uint16_t* out_length,
cli_hexdump_block(dest, bigint_length_B(&key->modulus), 4, 16);
#endif
x.info = 0;
x.length_B = key->modulus.length_B;
x.length_W = key->modulus.length_W;
x.wordv = dest;
bigint_adjust(&x);
rsa_os2ip(&x, NULL, bigint_length_B(&key->modulus));
@ -170,7 +170,7 @@ uint8_t rsa_decrypt_oaep(void* dest, uint16_t* out_length,
// cli_putc('a'); uart_flush(0);
x.wordv = dest;
x.length_B = key->modulus.length_B;
x.length_W = key->modulus.length_W;
x.info = 0;
bigint_adjust(&x);

4
rsa/rsaes_pkcs1v15.c
View File

@ -73,10 +73,10 @@ uint8_t rsa_encrypt_pkcs1v15(void* dest, uint16_t* out_length, const void* src,
((uint8_t*)dest)[2+pad_length] = 0x00;
memcpy((uint8_t*)dest+3+pad_length, src, length_B);
x.wordv = dest;
x.length_B = (length_B+pad_length+3+sizeof(bigint_word_t)-1)/sizeof(bigint_word_t);
x.length_W = (length_B+pad_length+3+sizeof(bigint_word_t)-1)/sizeof(bigint_word_t);
#if DEBUG
cli_putstr_P(PSTR("\r\nx-data: "));
cli_hexdump_block(x.wordv, x.length_B * sizeof(bigint_word_t), 4, 16);
cli_hexdump_block(x.wordv, x.length_W * sizeof(bigint_word_t), 4, 16);
#endif
bigint_adjust(&x);
rsa_os2ip(&x, NULL, length_B+pad_length+3);

38
test_src/main-bigint-test.c
View File

@ -72,7 +72,7 @@ void test_add_bigint(void){
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);
c_b = malloc(((a.length_W>b.length_W)?a.length_W:b.length_W)+2);
if(c_b==NULL){
cli_putstr_P(PSTR("\n\rERROR: Out of memory!"));
free(a.wordv);
@ -118,7 +118,7 @@ void test_add_scale_bigint(void){
}
*/
uint8_t *c_b;
c_b = malloc(((a.length_B>(b.length_B+scale))?a.length_B:(b.length_B+scale))+2);
c_b = malloc(((a.length_W>(b.length_W+scale))?a.length_W:(b.length_W+scale))+2);
if(c_b==NULL){
cli_putstr_P(PSTR("\n\rERROR: Out of memory!"));
free(a.wordv);
@ -164,7 +164,7 @@ void test_mul_bigint(void){
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);
c_b = malloc((((a.length_W>b.length_W)?a.length_W:b.length_W)+1)*2);
if(c_b==NULL){
cli_putstr_P(PSTR("\n\rERROR: Out of memory!"));
free(a.wordv);
@ -194,7 +194,7 @@ void test_square_bigint(void){
bigint_print_hex(&a);
cli_putstr_P(PSTR("**2 = "));
uint8_t *c_b;
c_b = malloc(a.length_B*2);
c_b = malloc(a.length_W*2);
if(c_b==NULL){
cli_putstr_P(PSTR("\n\rERROR: Out of memory!"));
free(a.wordv);
@ -260,7 +260,7 @@ void test_expmod_bigint(void){
cli_putstr_P(PSTR("\r\n end expmod test"));
return;
}
d_b = malloc(c.length_B);
d_b = malloc(c.length_W);
if(d_b==NULL){
cli_putstr_P(PSTR("\n\rERROR: Out of memory!"));
free(a.wordv);
@ -302,9 +302,9 @@ void test_gcdext_bigint(void){
cli_putstr_P(PSTR("\r\n end gcdext test"));
return;
}
c.wordv = malloc((a.length_B<b.length_B)?a.length_B:b.length_B);
d.wordv = malloc(1+(a.length_B>b.length_B)?a.length_B:b.length_B);
e.wordv = malloc(1+(a.length_B>b.length_B)?a.length_B:b.length_B);
c.wordv = malloc((a.length_W<b.length_W)?a.length_W:b.length_W);
d.wordv = malloc(1+(a.length_W>b.length_W)?a.length_W:b.length_W);
e.wordv = malloc(1+(a.length_W>b.length_W)?a.length_W:b.length_W);
cli_putstr_P(PSTR("\r\n gcdext( "));
bigint_print_hex(&a);
@ -334,8 +334,8 @@ void test_simple(void){
a.wordv=a_b;
b.wordv=b_b;
c.wordv=c_b;
a.length_B = 1;
b.length_B = 1;
a.length_W = 1;
b.length_W = 1;
a_b[0] = 1;
b_b[0] = 2;
bigint_add_u(&c, &a, &b);
@ -351,8 +351,8 @@ void test_mul_simple(void){
a.wordv=a_b;
b.wordv=b_b;
c.wordv=c_b;
a.length_B = 5;
b.length_B = 5;
a.length_W = 5;
b.length_W = 5;
bigint_adjust(&a);
bigint_adjust(&b);
bigint_mul_s(&c, &a, &b);
@ -376,8 +376,8 @@ void test_mul_simple(void){
a.wordv=a_b;
b.wordv=b_b;
c.wordv=c_b;
a.length_B = 8;
b.length_B = 8;
a.length_W = 8;
b.length_W = 8;
a.info=0x80;
bigint_adjust(&a);
bigint_adjust(&b);
@ -418,7 +418,7 @@ void test_square_simple(void){
uint8_t c_b[22];
a.wordv=a_b;
c.wordv=c_b;
a.length_B = 11;
a.length_W = 11;
a.info=0x00;
bigint_adjust(&a);
bigint_square(&c, &a);
@ -436,11 +436,11 @@ void test_reduce_simple(void){
uint8_t b_b[2] = {0x52, 0x27};
uint8_t c_b[2];
a.wordv=a_b;
a.length_B = 2;
a.length_W = 2;
a.info=0x00;
bigint_adjust(&a);
b.wordv=b_b;
b.length_B = 2;
b.length_W = 2;
b.info=0x00;
bigint_adjust(&b);
c.wordv = c_b;
@ -465,11 +465,11 @@ void test_gcdext_simple(void){
uint8_t b_b[5] = {0x72, 0x7D, 0x57, 0xAC, 0X6F};
uint8_t c_b[6], d_b[6], e_b[6];
a.wordv=a_b;
a.length_B = 5;
a.length_W = 5;
a.info=0x00;
bigint_adjust(&a);
b.wordv=b_b;
b.length_B = 5;
b.length_W = 5;
b.info=0x00;
bigint_adjust(&b);
c.wordv = c_b;

16
test_src/main-dsa-test.c
View File

@ -53,8 +53,8 @@ void dsa_print_item(bigint_t* a, PGM_P pstr){
cli_putstr_P(pstr);
cli_putstr_P(PSTR(": "));
uint16_t i;
p = a->wordv + a->length_B -1;
for(i=0; i<a->length_B-1; ++i){
p = a->wordv + a->length_W -1;
for(i=0; i<a->length_W-1; ++i){
if(i%16==0){
cli_putstr_P(PSTR("\r\n "));
}
@ -70,8 +70,8 @@ void dsa_print_item(bigint_t* a, PGM_P pstr){
void dsa_print_signature_b64(dsa_signature_t* s){
uint16_t size_r, size_s, size_o, i,j;
size_r = s->r.length_B +2;
size_s = s->s.length_B +2;
size_r = s->r.length_W +2;
size_s = s->s.length_W +2;
size_o = size_r + size_s +2;
uint8_t bin_b[size_o];
bin_b[0] = 0x30;
@ -79,12 +79,12 @@ void dsa_print_signature_b64(dsa_signature_t* s){
bin_b[2] = 0x02;
bin_b[3] = size_r-2;
j=4;
for(i=s->r.length_B; i>0; --i){
for(i=s->r.length_W; i>0; --i){
bin_b[j++] = s->r.wordv[i-1];
}
bin_b[j++] = 0x02;
bin_b[j++] = size_s -2;
for(i=s->s.length_B; i>0; --i){
for(i=s->s.length_W; i>0; --i){
bin_b[j++] = s->s.wordv[i-1];
}
char b64_b[size_o*4/3+5];
@ -111,8 +111,8 @@ void quick_test(void){
dsa_signature_t dsa_sig;
uint8_t i, t=0, message[] = {0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef};
load_fix_dsa();
uint8_t dsa_sig_s_b[dsa_ctx.domain.q.length_B],
dsa_sig_r_b[dsa_ctx.domain.q.length_B];
uint8_t dsa_sig_s_b[dsa_ctx.domain.q.length_W],
dsa_sig_r_b[dsa_ctx.domain.q.length_W];
dsa_print_ctx(&dsa_ctx);
dsa_sig.r.wordv = dsa_sig_r_b;
dsa_sig.s.wordv = dsa_sig_s_b;

8
test_src/main-rsaes_oaep-test.c
View File

@ -422,7 +422,7 @@ uint8_t read_bigint(bigint_t* a, char* prompt){
return 1;
}
a->wordv = (bigint_word_t*)buffer;
a->length_B = (read_length + sizeof(bigint_word_t) - 1) / sizeof(bigint_word_t);
a->length_W = (read_length + sizeof(bigint_word_t) - 1) / sizeof(bigint_word_t);
a->info = 0;
bigint_changeendianess(a);
bigint_adjust(a);
@ -491,7 +491,7 @@ uint8_t read_key_conv(void){
}
uint8_t load_bigint_from_os(bigint_t* a, PGM_VOID_P os, uint16_t length_B){
a->length_B = BIGINT_CEIL(length_B) / sizeof(bigint_word_t);
a->length_W = BIGINT_CEIL(length_B) / sizeof(bigint_word_t);
a->wordv = malloc(BIGINT_CEIL(length_B));
if(!a->wordv){
cli_putstr_P(PSTR("\r\nOOM!\r\n"));
@ -534,8 +534,8 @@ void quick_test(void){
if(!keys_allocated){
load_fix_rsa();
}
ciphertext = malloc(clen = pub_key.modulus.length_B * sizeof(bigint_word_t));
plaintext = malloc(pub_key.modulus.length_B * sizeof(bigint_word_t));
ciphertext = malloc(clen = pub_key.modulus.length_W * sizeof(bigint_word_t));
plaintext = malloc(pub_key.modulus.length_W * sizeof(bigint_word_t));
memcpy_P(plaintext, MSG, sizeof(MSG));
memcpy_P(seed, SEED, sizeof(SEED));
cli_putstr_P(PSTR("\r\nplaintext:"));

14
test_src/main-rsaes_pkcs1v15-test.c
View File

@ -240,7 +240,7 @@ uint8_t read_bigint(bigint_t* a, char* prompt){
return 1;
}
a->wordv = (bigint_word_t*)buffer;
a->length_B = (read_length + sizeof(bigint_word_t) - 1) / sizeof(bigint_word_t);
a->length_W = (read_length + sizeof(bigint_word_t) - 1) / sizeof(bigint_word_t);
a->info = 0;
bigint_changeendianess(a);
bigint_adjust(a);
@ -309,7 +309,7 @@ uint8_t read_key_conv(void){
}
uint8_t load_bigint_from_os(bigint_t* a, PGM_VOID_P os, uint16_t length_B){
a->length_B = BIGINT_CEIL(length_B) / sizeof(bigint_word_t);
a->length_W = BIGINT_CEIL(length_B) / sizeof(bigint_word_t);
a->wordv = malloc(BIGINT_CEIL(length_B));
if(!a->wordv){
cli_putstr_P(PSTR("\r\nOOM!\r\n"));
@ -474,8 +474,8 @@ void load_priv_conventional(void){
cli_putstr_P(PSTR("\r\nERROR: OOM!"));
return;
}
epriv->length_B = (sizeof(PRIV_EXPONENT) + sizeof(bigint_word_t) - 1) / sizeof(bigint_word_t);
epriv->wordv = malloc(epriv->length_B * sizeof(bigint_word_t));
epriv->length_W = (sizeof(PRIV_EXPONENT) + sizeof(bigint_word_t) - 1) / sizeof(bigint_word_t);
epriv->wordv = malloc(epriv->length_W * sizeof(bigint_word_t));
if(!epriv->wordv){
cli_putstr_P(PSTR("\r\nERROR: OOM!"));
return;
@ -508,8 +508,8 @@ void load_priv_crt_mono(void){
for(i=0; i<5; ++i){
v[i] = malloc(sizeof(bigint_t));
v[i]->info = 0;
v[i]->length_B = (sv[i] + sizeof(bigint_word_t) - 1) / sizeof(bigint_word_t);
v[i]->wordv = calloc(v[i]->length_B , sizeof(bigint_word_t));
v[i]->length_W = (sv[i] + sizeof(bigint_word_t) - 1) / sizeof(bigint_word_t);
v[i]->wordv = calloc(v[i]->length_W , sizeof(bigint_word_t));
if(!v[i]->wordv){
cli_putstr_P(PSTR("\r\nERROR: OOM!"));
return;
@ -522,7 +522,7 @@ void load_priv_crt_mono(void){
}
uint8_t load_bigint_from_os(bigint_t* a, PGM_VOID_P os, uint16_t length_B){
a->length_B = BIGINT_CEIL(length_B) / sizeof(bigint_word_t);
a->length_W = BIGINT_CEIL(length_B) / sizeof(bigint_word_t);
a->wordv = malloc(BIGINT_CEIL(length_B));
if(!a->wordv){
cli_putstr_P(PSTR("\r\nOOM!\r\n"));