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Implemented ksdk_port fixes to handle mp_ response codes. Added KSDK support for normal math. Regression testing against K82 hardware (MMCAU/LTC) and software with normal and fast math.

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This commit is contained in:
David Garske
2017-02-01 16:40:10 -08:00
parent 3008c888bf
commit 4cbfec1c7d
8 changed files with 304 additions and 198 deletions
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57
wolfcrypt/src/integer.c
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@@ -47,6 +47,9 @@
#include <wolfssl/wolfcrypt/integer.h>
#if defined(FREESCALE_LTC_TFM)
#include <wolfssl/wolfcrypt/port/nxp/ksdk_port.h>
#endif
#ifdef WOLFSSL_DEBUG_MATH
#include <stdio.h>
#endif
@@ -261,6 +264,22 @@ int mp_leading_bit (mp_int * a)
return bit;
}
int mp_to_unsigned_bin_at_pos(int x, mp_int *t, unsigned char *b)
{
int res = 0;
while (mp_iszero(t) == MP_NO) {
#ifndef MP_8BIT
b[x++] = (unsigned char) (t->dp[0] & 255);
#else
b[x++] = (unsigned char) (t->dp[0] | ((t->dp[1] & 0x01) << 7));
#endif
if ((res = mp_div_2d (t, 8, t, NULL)) != MP_OKAY) {
return res;
}
res = x;
}
return res;
}
/* store in unsigned [big endian] format */
int mp_to_unsigned_bin (mp_int * a, unsigned char *b)
@@ -272,21 +291,15 @@ int mp_to_unsigned_bin (mp_int * a, unsigned char *b)
return res;
}
x = 0;
while (mp_iszero (&t) == MP_NO) {
#ifndef MP_8BIT
b[x++] = (unsigned char) (t.dp[0] & 255);
#else
b[x++] = (unsigned char) (t.dp[0] | ((t.dp[1] & 0x01) << 7));
#endif
if ((res = mp_div_2d (&t, 8, &t, NULL)) != MP_OKAY) {
mp_clear (&t);
return res;
}
x = mp_to_unsigned_bin_at_pos(0, &t, b);
if (x < 0) {
mp_clear(&t);
return x;
}
bn_reverse (b, x);
mp_clear (&t);
return MP_OKAY;
return res;
}
@@ -770,7 +783,11 @@ int mp_lshd (mp_int * a, int b)
* embedded in the normal function but that wasted a lot of stack space
* for nothing (since 99% of the time the Montgomery code would be called)
*/
#if defined(FREESCALE_LTC_TFM)
int wolfcrypt_mp_exptmod (mp_int * G, mp_int * X, mp_int * P, mp_int * Y)
#else
int mp_exptmod (mp_int * G, mp_int * X, mp_int * P, mp_int * Y)
#endif
{
int dr;
@@ -881,7 +898,11 @@ int mp_abs (mp_int * a, mp_int * b)
/* hac 14.61, pp608 */
#if defined(FREESCALE_LTC_TFM)
int wolfcrypt_mp_invmod(mp_int * a, mp_int * b, mp_int * c)
#else
int mp_invmod (mp_int * a, mp_int * b, mp_int * c)
#endif
{
/* b cannot be negative */
if (b->sign == MP_NEG || mp_iszero(b) == MP_YES) {
@@ -1331,7 +1352,11 @@ int mp_is_bit_set (mp_int *a, mp_digit b)
}
/* c = a mod b, 0 <= c < b */
#if defined(FREESCALE_LTC_TFM)
int wolfcrypt_mp_mod(mp_int * a, mp_int * b, mp_int * c)
#else
int mp_mod (mp_int * a, mp_int * b, mp_int * c)
#endif
{
mp_int t;
int res;
@@ -2654,7 +2679,11 @@ int mp_mul_d (mp_int * a, mp_digit b, mp_int * c)
/* d = a * b (mod c) */
#if defined(FREESCALE_LTC_TFM)
int wolfcrypt_mp_mulmod(mp_int *a, mp_int *b, mp_int *c, mp_int *d)
#else
int mp_mulmod (mp_int * a, mp_int * b, mp_int * c, mp_int * d)
#endif
{
int res;
mp_int t;
@@ -2739,7 +2768,11 @@ int mp_sqr (mp_int * a, mp_int * b)
/* high level multiplication (handles sign) */
#if defined(FREESCALE_LTC_TFM)
int wolfcrypt_mp_mul(mp_int *a, mp_int *b, mp_int *c)
#else
int mp_mul (mp_int * a, mp_int * b, mp_int * c)
#endif
{
int res, neg;
neg = (a->sign == b->sign) ? MP_ZPOS : MP_NEG;