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Add EC_POINT conversion to BIGNUM (EC_POINT_point2bn)
Add setting affine coordinates for EC_POINT (EC_POINT_set_affine_coordinates_GFp)
Add bit clearing for BIGNUM (BN_clear_bit)
Add supporting unit tests in api.c
This commit is contained in:
Juliusz Sosinowicz
2019-11-26 15:29:12 +01:00
parent 89e35e2547
commit aea95232d1
8 changed files with 197 additions and 17 deletions
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165
src/ssl.c
View File

@ -86,6 +86,7 @@
#include <wolfssl/openssl/ecdsa.h>
#include <wolfssl/openssl/ecdh.h>
#include <wolfssl/openssl/err.h>
#include <wolfssl/openssl/opensslv.h>
#include <wolfssl/openssl/rc4.h>
#include <wolfssl/openssl/stack.h>
#include <wolfssl/openssl/x509v3.h>
@ -15639,6 +15640,10 @@ size_t wolfSSL_get_client_random(const WOLFSSL* ssl, unsigned char* out,
return SSLEAY_VERSION_NUMBER;
}
unsigned long OpenSSL_version_num(void)
{
return OPENSSL_VERSION_NUMBER;
}
const char* wolfSSLeay_version(int type)
{
@ -34308,11 +34313,9 @@ size_t wolfSSL_EC_POINT_point2oct(const WOLFSSL_EC_GROUP *group,
return WOLFSSL_FAILURE;
}
if (min_len > len) {
return WOLFSSL_FAILURE;
}
if (wolfSSL_ECPoint_i2d(group, p, buf, &min_len) != WOLFSSL_SUCCESS) {
if (buf &&
((min_len > len) ||
wolfSSL_ECPoint_i2d(group, p, buf, &min_len) != WOLFSSL_SUCCESS)) {
return WOLFSSL_FAILURE;
}
@ -34325,7 +34328,7 @@ int wolfSSL_EC_POINT_oct2point(const WOLFSSL_EC_GROUP *group,
WOLFSSL_EC_POINT *p, const unsigned char *buf,
size_t len, WOLFSSL_BN_CTX *ctx)
{
WOLFSSL_ENTER("EC_POINT_point2oct");
WOLFSSL_ENTER("wolfSSL_EC_POINT_oct2point");
if (!group || !p) {
return WOLFSSL_FAILURE;
@ -34336,6 +34339,42 @@ int wolfSSL_EC_POINT_oct2point(const WOLFSSL_EC_GROUP *group,
return wolfSSL_ECPoint_d2i((unsigned char*)buf, len, group, p);
}
/* wolfSSL_EC_POINT_point2bn should return "in" if not null */
WOLFSSL_BIGNUM *wolfSSL_EC_POINT_point2bn(const WOLFSSL_EC_GROUP *group,
const WOLFSSL_EC_POINT *p,
char form,
WOLFSSL_BIGNUM *in, WOLFSSL_BN_CTX *ctx)
{
size_t len;
byte *buf;
WOLFSSL_BIGNUM *ret = NULL;
WOLFSSL_ENTER("wolfSSL_EC_POINT_oct2point");
if (!group || !p) {
return NULL;
}
if ((len = wolfSSL_EC_POINT_point2oct(group, p, form,
NULL, 0, ctx)) == WOLFSSL_FAILURE) {
return NULL;
}
if (!(buf = (byte*)XMALLOC(len, NULL, DYNAMIC_TYPE_TMP_BUFFER))) {
WOLFSSL_MSG("malloc failed");
return NULL;
}
if (wolfSSL_EC_POINT_point2oct(group, p, form,
buf, len, ctx) == len) {
ret = wolfSSL_BN_bin2bn(buf, len, in);
}
XFREE(buf, NULL, DYNAMIC_TYPE_TMP_BUFFER);
return ret;
}
WOLFSSL_EC_POINT *wolfSSL_EC_POINT_new(const WOLFSSL_EC_GROUP *group)
{
WOLFSSL_EC_POINT *p;
@ -34399,6 +34438,47 @@ int wolfSSL_EC_POINT_get_affine_coordinates_GFp(const WOLFSSL_EC_GROUP *group,
return WOLFSSL_SUCCESS;
}
int wolfSSL_EC_POINT_set_affine_coordinates_GFp(const WOLFSSL_EC_GROUP *group,
WOLFSSL_EC_POINT *point,
const WOLFSSL_BIGNUM *x,
const WOLFSSL_BIGNUM *y,
WOLFSSL_BN_CTX *ctx)
{
(void)ctx;
WOLFSSL_ENTER("wolfSSL_EC_POINT_set_affine_coordinates_GFp");
if (group == NULL || point == NULL || point->internal == NULL ||
x == NULL || y == NULL) {
WOLFSSL_MSG("wolfSSL_EC_POINT_set_affine_coordinates_GFp NULL error");
return WOLFSSL_FAILURE;
}
if (!point->X) {
point->X = wolfSSL_BN_new();
}
if (!point->Y) {
point->Y = wolfSSL_BN_new();
}
if (!point->Z) {
point->Z = wolfSSL_BN_new();
}
if (!point->X || !point->Y || !point->Z) {
WOLFSSL_MSG("wolfSSL_BN_new failed");
return WOLFSSL_FAILURE;
}
BN_copy(point->X, x);
BN_copy(point->Y, y);
BN_copy(point->Z, wolfSSL_BN_value_one());
if (SetECPointInternal((WOLFSSL_EC_POINT *)point) != WOLFSSL_SUCCESS) {
WOLFSSL_MSG("SetECPointInternal failed");
return WOLFSSL_FAILURE;
}
return WOLFSSL_SUCCESS;
}
#ifndef WOLFSSL_ATECC508A
/* return code compliant with OpenSSL :
* 1 if success, 0 if error
@ -42358,7 +42438,7 @@ WOLFSSL_EVP_PKEY* wolfSSL_d2i_PrivateKey_EVP(WOLFSSL_EVP_PKEY** out,
/* stunnel compatibility functions*/
#if defined(OPENSSL_ALL) || (defined(OPENSSL_EXTRA) && (defined(HAVE_STUNNEL) || \
defined(WOLFSSL_NGINX) || defined(HAVE_LIGHTY) || \
defined(WOLFSSL_HAPROXY)))
defined(WOLFSSL_HAPROXY) || defined(WOLFSSL_OPENSSH)))
void wolfSSL_ERR_remove_thread_state(void* pid)
{
(void) pid;
@ -46485,11 +46565,6 @@ int wolfSSL_BN_is_bit_set(const WOLFSSL_BIGNUM* bn, int n)
return WOLFSSL_FAILURE;
}
if (n > DIGIT_BIT) {
WOLFSSL_MSG("input bit count too large");
return WOLFSSL_FAILURE;
}
return mp_is_bit_set((mp_int*)bn->internal, (mp_digit)n);
}
@ -46504,7 +46579,7 @@ int wolfSSL_BN_set_bit(WOLFSSL_BIGNUM* bn, int n)
}
if (mp_set_bit((mp_int*)bn->internal, n) != MP_OKAY) {
WOLFSSL_MSG("mp_set_int error");
WOLFSSL_MSG("mp_set_bit error");
return WOLFSSL_FAILURE;
}
@ -46512,6 +46587,60 @@ int wolfSSL_BN_set_bit(WOLFSSL_BIGNUM* bn, int n)
}
int wolfSSL_BN_clear_bit(WOLFSSL_BIGNUM* bn, int n)
{
int ret = WOLFSSL_FAILURE;
#ifndef WOLFSSL_SMALL_STACK
mp_int res[1];
mp_int tmp[1];
#else
mp_int* res = null;
mp_int* tmp = null;
#endif
if (bn == NULL || bn->internal == NULL) {
WOLFSSL_MSG("bn NULL error");
goto cleanup;
}
if (mp_is_bit_set((mp_int*)bn->internal, n)) {
#ifdef WOLFSSL_SMALL_STACK
res = (mp_int*)XMALLOC(sizeof(mp_int), NULL, DYNAMIC_TYPE_BIGINT);
if (res == NULL) {
goto cleanup;
}
tmp = (mp_int*)XMALLOC(sizeof(mp_int), NULL, DYNAMIC_TYPE_BIGINT);
if (tmp == NULL) {
goto cleanup;
}
#endif
if (mp_init(tmp) != MP_OKAY) {
goto cleanup;
}
if (mp_init(res) != MP_OKAY) {
goto cleanup;
}
if (mp_set_bit(tmp, n) != MP_OKAY) {
goto cleanup;
}
if (mp_sub((mp_int*)bn->internal, tmp, res) != MP_OKAY) {
goto cleanup;
}
if (mp_copy(res, (mp_int*)bn->internal) != MP_OKAY) {
goto cleanup;
}
}
ret = WOLFSSL_SUCCESS;
cleanup:
#ifdef WOLFSSL_SMALL_STACK
if (res):
XFREE(res, NULL, DYNAMIC_TYPE_BIGINT);
if (tmp):
XFREE(tmp, NULL, DYNAMIC_TYPE_BIGINT);
#endif
return ret;
}
/* WOLFSSL_SUCCESS on ok */
/* Note on use: this function expects str to be an even length. It is
* converting pairs of bytes into 8-bit values. As an example, the RSA
@ -47691,6 +47820,14 @@ void wolfSSL_BN_clear_free(WOLFSSL_BIGNUM* bn)
wolfSSL_BN_free(bn);
}
}
void wolfSSL_BN_clear(WOLFSSL_BIGNUM* bn)
{
WOLFSSL_MSG("wolfSSL_BN_clear");
if (bn && bn->internal) {
mp_forcezero((mp_int*)bn->internal);
}
}
#endif /* OPENSSL_EXTRA || OPENSSL_EXTRA_X509_SMALL */
#if !defined(NO_RSA) && (defined(OPENSSL_EXTRA) || defined(OPENSSL_EXTRA_X509_SMALL))
@ -47753,7 +47890,7 @@ void wolfSSL_RSA_free(WOLFSSL_RSA* rsa)
wolfSSL_BN_free(rsa->n);
#ifdef WC_RSA_BLINDING
if (wc_FreeRng(rsa->rng) != 0) {
if (rsa->rng && wc_FreeRng(rsa->rng) != 0) {
WOLFSSL_MSG("Issue freeing rng");
}
XFREE(rsa->rng, NULL, DYNAMIC_TYPE_RNG);

25
tests/api.c
View File

@ -1781,9 +1781,10 @@ static void test_wolfSSL_EC(void)
#ifdef HAVE_ECC
BN_CTX *ctx;
EC_GROUP *group;
EC_POINT *Gxy, *new_point;
EC_POINT *Gxy, *new_point, *set_point;
BIGNUM *k = NULL, *Gx = NULL, *Gy = NULL, *Gz = NULL;
BIGNUM *X, *Y;
BIGNUM *set_point_bn;
char* hexStr;
int group_bits;
@ -1802,8 +1803,10 @@ static void test_wolfSSL_EC(void)
AssertIntEQ((group_bits = EC_GROUP_order_bits(group)), 256);
AssertNotNull(Gxy = EC_POINT_new(group));
AssertNotNull(new_point = EC_POINT_new(group));
AssertNotNull(set_point = EC_POINT_new(group));
AssertNotNull(X = BN_new());
AssertNotNull(Y = BN_new());
AssertNotNull(set_point_bn = BN_new());
/* load test values */
AssertIntEQ(BN_hex2bn(&k, kTest), WOLFSSL_SUCCESS);
@ -1828,6 +1831,15 @@ static void test_wolfSSL_EC(void)
/* check if point X coordinate is zero */
AssertIntEQ(BN_is_zero(X), WOLFSSL_FAILURE);
/* set the same X and Y points in another object */
AssertIntEQ(EC_POINT_set_affine_coordinates_GFp(group, set_point, X, Y, ctx), WOLFSSL_SUCCESS);
/* compare points as they should be the same */
AssertIntEQ(EC_POINT_cmp(group, new_point, set_point, ctx), 0);
AssertPtrEq(EC_POINT_point2bn(group, set_point, POINT_CONVERSION_UNCOMPRESSED,
set_point_bn, ctx), set_point_bn);
/* check bn2hex */
hexStr = BN_bn2hex(k);
AssertStrEQ(hexStr, kTest);
@ -1867,7 +1879,9 @@ static void test_wolfSSL_EC(void)
BN_free(X);
BN_free(Y);
BN_free(k);
BN_free(set_point_bn);
EC_POINT_free(new_point);
EC_POINT_free(set_point);
EC_POINT_free(Gxy);
EC_GROUP_free(group);
BN_CTX_free(ctx);
@ -21519,6 +21533,15 @@ static void test_wolfSSL_BN(void)
AssertIntLT(BN_cmp(a, c), 0);
AssertIntGT(BN_cmp(c, b), 0);
AssertIntEQ(BN_set_word(a, 0), 1);
AssertIntEQ(BN_is_zero(a), 1);
AssertIntEQ(BN_set_bit(a, 0x45), 1);
AssertIntEQ(BN_is_zero(a), 0);
AssertIntEQ(BN_is_bit_set(a, 0x45), 1);
AssertIntEQ(BN_clear_bit(a, 0x45), 1);
AssertIntEQ(BN_is_bit_set(a, 0x45), 0);
AssertIntEQ(BN_is_zero(a), 1);
BN_free(a);
BN_free(b);
BN_free(c);

2
wolfssl/internal.h
View File

@ -2748,7 +2748,7 @@ struct WOLFSSL_CTX {
#endif
#if defined(OPENSSL_ALL) || (defined(OPENSSL_EXTRA) && (defined(HAVE_STUNNEL) || \
defined(WOLFSSL_NGINX) || defined(HAVE_LIGHTY) || \
defined(WOLFSSL_HAPROXY)))
defined(WOLFSSL_HAPROXY) || defined(WOLFSSL_OPENSSH) ))
CallbackSniRecv sniRecvCb;
void* sniRecvCbArg;
#endif

4
wolfssl/openssl/bn.h
View File

@ -64,6 +64,7 @@ WOLFSSL_API void wolfSSL_BN_init(WOLFSSL_BIGNUM *);
#endif
WOLFSSL_API void wolfSSL_BN_free(WOLFSSL_BIGNUM*);
WOLFSSL_API void wolfSSL_BN_clear_free(WOLFSSL_BIGNUM*);
WOLFSSL_API void wolfSSL_BN_clear(WOLFSSL_BIGNUM*);
WOLFSSL_API int wolfSSL_BN_sub(WOLFSSL_BIGNUM*, const WOLFSSL_BIGNUM*,
@ -110,6 +111,7 @@ WOLFSSL_API char* wolfSSL_BN_bn2dec(const WOLFSSL_BIGNUM*);
WOLFSSL_API int wolfSSL_BN_lshift(WOLFSSL_BIGNUM*, const WOLFSSL_BIGNUM*, int);
WOLFSSL_API int wolfSSL_BN_add_word(WOLFSSL_BIGNUM*, WOLFSSL_BN_ULONG);
WOLFSSL_API int wolfSSL_BN_set_bit(WOLFSSL_BIGNUM*, int);
WOLFSSL_API int wolfSSL_BN_clear_bit(WOLFSSL_BIGNUM*, int);
WOLFSSL_API int wolfSSL_BN_set_word(WOLFSSL_BIGNUM*, WOLFSSL_BN_ULONG);
WOLFSSL_API unsigned long wolfSSL_BN_get_word(const WOLFSSL_BIGNUM*);
@ -141,6 +143,7 @@ typedef WOLFSSL_BN_GENCB BN_GENCB;
#define BN_init wolfSSL_BN_init
#define BN_free wolfSSL_BN_free
#define BN_clear_free wolfSSL_BN_clear_free
#define BN_clear wolfSSL_BN_clear
#define BN_num_bytes wolfSSL_BN_num_bytes
#define BN_num_bits wolfSSL_BN_num_bits
@ -184,6 +187,7 @@ typedef WOLFSSL_BN_GENCB BN_GENCB;
#define BN_add wolfSSL_BN_add
#define BN_set_word wolfSSL_BN_set_word
#define BN_set_bit wolfSSL_BN_set_bit
#define BN_clear_bit wolfSSL_BN_clear_bit
#define BN_is_prime_ex wolfSSL_BN_is_prime_ex

1
wolfssl/openssl/crypto.h
View File

@ -35,6 +35,7 @@
WOLFSSL_API const char* wolfSSLeay_version(int type);
WOLFSSL_API unsigned long wolfSSLeay(void);
WOLFSSL_API unsigned long OpenSSL_version_num(void);
#ifdef OPENSSL_EXTRA
WOLFSSL_API void wolfSSL_OPENSSL_free(void*);

14
wolfssl/openssl/ec.h
View File

@ -140,6 +140,11 @@ WOLFSSL_API
int wolfSSL_EC_POINT_oct2point(const WOLFSSL_EC_GROUP *group,
WOLFSSL_EC_POINT *p, const unsigned char *buf,
size_t len, WOLFSSL_BN_CTX *ctx);
WOLFSSL_API
WOLFSSL_BIGNUM *wolfSSL_EC_POINT_point2bn(const WOLFSSL_EC_GROUP *group,
const WOLFSSL_EC_POINT *p,
char form,
WOLFSSL_BIGNUM *in, WOLFSSL_BN_CTX *ctx);
WOLFSSL_API
int wolfSSL_EC_KEY_LoadDer(WOLFSSL_EC_KEY* key,
@ -203,6 +208,12 @@ int wolfSSL_EC_POINT_get_affine_coordinates_GFp(const WOLFSSL_EC_GROUP *group,
WOLFSSL_BIGNUM *y,
WOLFSSL_BN_CTX *ctx);
WOLFSSL_API
int wolfSSL_EC_POINT_set_affine_coordinates_GFp(const WOLFSSL_EC_GROUP *group,
WOLFSSL_EC_POINT *point,
const WOLFSSL_BIGNUM *x,
const WOLFSSL_BIGNUM *y,
WOLFSSL_BN_CTX *ctx);
WOLFSSL_API
int wolfSSL_EC_POINT_mul(const WOLFSSL_EC_GROUP *group, WOLFSSL_EC_POINT *r,
const WOLFSSL_BIGNUM *n,
const WOLFSSL_EC_POINT *q, const WOLFSSL_BIGNUM *m,
@ -259,6 +270,8 @@ char* wolfSSL_EC_POINT_point2hex(const WOLFSSL_EC_GROUP* group,
#define EC_POINT_free wolfSSL_EC_POINT_free
#define EC_POINT_get_affine_coordinates_GFp \
wolfSSL_EC_POINT_get_affine_coordinates_GFp
#define EC_POINT_set_affine_coordinates_GFp \
wolfSSL_EC_POINT_set_affine_coordinates_GFp
#define EC_POINT_mul wolfSSL_EC_POINT_mul
#define EC_POINT_clear_free wolfSSL_EC_POINT_clear_free
#define EC_POINT_cmp wolfSSL_EC_POINT_cmp
@ -270,6 +283,7 @@ char* wolfSSL_EC_POINT_point2hex(const WOLFSSL_EC_GROUP* group,
#define ECPoint_d2i wolfSSL_ECPoint_d2i
#define EC_POINT_point2oct wolfSSL_EC_POINT_point2oct
#define EC_POINT_oct2point wolfSSL_EC_POINT_oct2point
#define EC_POINT_point2bn wolfSSL_EC_POINT_point2bn
#ifndef HAVE_SELFTEST
#define EC_POINT_point2hex wolfSSL_EC_POINT_point2hex

1
wolfssl/openssl/err.h
View File

@ -26,6 +26,7 @@
/* err.h for openssl */
#define ERR_load_crypto_strings wolfSSL_ERR_load_crypto_strings
#define ERR_load_CRYPTO_strings wolfSSL_ERR_load_crypto_strings
#define ERR_peek_last_error wolfSSL_ERR_peek_last_error
/* fatal error */

2
wolfssl/wolfcrypt/ecc.h
View File

@ -327,7 +327,7 @@ typedef struct alt_fp_int {
#endif
/* A point on an ECC curve, stored in Jacbobian format such that (x,y,z) =>
/* A point on an ECC curve, stored in Jacobian format such that (x,y,z) =>
(x/z^2, y/z^3, 1) when interpreted as affine */
typedef struct {
#ifndef ALT_ECC_SIZE