knf approximation

1 files changed, 219 insertions, 215 deletions

diff --git a/src/lib/libcrypto/ec/ec_key.c b/src/lib/libcrypto/ec/ec_key.c
index 4f0559591e..1d727ec77d 100644
--- a/src/lib/libcrypto/ec/ec_key.c
+++ b/src/lib/libcrypto/ec/ec_key.c
@@ -10,7 +10,7 @@
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer. 
+ *    notice, this list of conditions and the following disclaimer.
  *
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
@@ -57,7 +57,7 @@
  */
 /* ====================================================================
  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
- * Portions originally developed by SUN MICROSYSTEMS, INC., and 
+ * Portions originally developed by SUN MICROSYSTEMS, INC., and
  * contributed to the OpenSSL project.
  */
 
@@ -65,78 +65,79 @@
 #include "ec_lcl.h"
 #include <openssl/err.h>
 
-EC_KEY *EC_KEY_new(void)
-        {
+EC_KEY *
+EC_KEY_new(void)
+{
         EC_KEY *ret;
 
-        ret=(EC_KEY *)malloc(sizeof(EC_KEY));
-        if (ret == NULL)
-                {
+        ret = (EC_KEY *) malloc(sizeof(EC_KEY));
+        if (ret == NULL) {
                 ECerr(EC_F_EC_KEY_NEW, ERR_R_MALLOC_FAILURE);
-                return(NULL);
-                }
-
-        ret->version = 1;       
+                return (NULL);
+        }
+        ret->version = 1;
         ret->flags = 0;
-        ret->group   = NULL;
+        ret->group = NULL;
         ret->pub_key = NULL;
-        ret->priv_key= NULL;
-        ret->enc_flag= 0; 
+        ret->priv_key = NULL;
+        ret->enc_flag = 0;
         ret->conv_form = POINT_CONVERSION_UNCOMPRESSED;
-        ret->references= 1;
+        ret->references = 1;
         ret->method_data = NULL;
-        return(ret);
-        }
+        return (ret);
+}
 
-EC_KEY *EC_KEY_new_by_curve_name(int nid)
-        {
+EC_KEY *
+EC_KEY_new_by_curve_name(int nid)
+{
         EC_KEY *ret = EC_KEY_new();
         if (ret == NULL)
                 return NULL;
         ret->group = EC_GROUP_new_by_curve_name(nid);
-        if (ret->group == NULL)
-                {
+        if (ret->group == NULL) {
                 EC_KEY_free(ret);
                 return NULL;
-                }
-        return ret;
         }
+        return ret;
+}
 
-void EC_KEY_free(EC_KEY *r)
-        {
+void 
+EC_KEY_free(EC_KEY * r)
+{
         int i;
 
-        if (r == NULL) return;
+        if (r == NULL)
+                return;
 
-        i=CRYPTO_add(&r->references,-1,CRYPTO_LOCK_EC);
-        if (i > 0) return;
+        i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_EC);
+        if (i > 0)
+                return;
 
-        if (r->group    != NULL) 
+        if (r->group != NULL)
                 EC_GROUP_free(r->group);
-        if (r->pub_key  != NULL)
+        if (r->pub_key != NULL)
                 EC_POINT_free(r->pub_key);
         if (r->priv_key != NULL)
                 BN_clear_free(r->priv_key);
 
         EC_EX_DATA_free_all_data(&r->method_data);
 
-        OPENSSL_cleanse((void *)r, sizeof(EC_KEY));
+        OPENSSL_cleanse((void *) r, sizeof(EC_KEY));
 
         free(r);
-        }
+}
 
-EC_KEY *EC_KEY_copy(EC_KEY *dest, const EC_KEY *src)
-        {
+EC_KEY *
+EC_KEY_copy(EC_KEY * dest, const EC_KEY * src)
+{
         EC_EXTRA_DATA *d;
 
-        if (dest == NULL || src == NULL)
-                {
+        if (dest == NULL || src == NULL) {
                 ECerr(EC_F_EC_KEY_COPY, ERR_R_PASSED_NULL_PARAMETER);
                 return NULL;
-                }
+        }
         /* copy the parameters */
-        if (src->group)
-                {
+        if (src->group) {
                 const EC_METHOD *meth = EC_GROUP_method_of(src->group);
                 /* clear the old group */
                 if (dest->group)
@@ -146,10 +147,9 @@ EC_KEY *EC_KEY_copy(EC_KEY *dest, const EC_KEY *src)
                         return NULL;
                 if (!EC_GROUP_copy(dest->group, src->group))
                         return NULL;
-                }
-        /*  copy the public key */
-        if (src->pub_key && src->group)
-                {
+        }
+        /* copy the public key */
+        if (src->pub_key && src->group) {
                 if (dest->pub_key)
                         EC_POINT_free(dest->pub_key);
                 dest->pub_key = EC_POINT_new(src->group);
@@ -157,83 +157,81 @@ EC_KEY *EC_KEY_copy(EC_KEY *dest, const EC_KEY *src)
                         return NULL;
                 if (!EC_POINT_copy(dest->pub_key, src->pub_key))
                         return NULL;
-                }
+        }
         /* copy the private key */
-        if (src->priv_key)
-                {
-                if (dest->priv_key == NULL)
-                        {
+        if (src->priv_key) {
+                if (dest->priv_key == NULL) {
                         dest->priv_key = BN_new();
                         if (dest->priv_key == NULL)
                                 return NULL;
-                        }
+                }
                 if (!BN_copy(dest->priv_key, src->priv_key))
                         return NULL;
-                }
+        }
         /* copy method/extra data */
         EC_EX_DATA_free_all_data(&dest->method_data);
 
-        for (d = src->method_data; d != NULL; d = d->next)
-                {
+        for (d = src->method_data; d != NULL; d = d->next) {
                 void *t = d->dup_func(d->data);
-                
+
                 if (t == NULL)
                         return 0;
-                if (!EC_EX_DATA_set_data(&dest->method_data, t, d->dup_func, d->free_func, d->clear_free_func))
+                if (!EC_EX_DATA_set_data(&dest->method_data, t, d->dup_func,
+                    d->free_func, d->clear_free_func))
                         return 0;
-                }
+        }
 
         /* copy the rest */
-        dest->enc_flag  = src->enc_flag;
+        dest->enc_flag = src->enc_flag;
         dest->conv_form = src->conv_form;
-        dest->version   = src->version;
+        dest->version = src->version;
         dest->flags = src->flags;
 
         return dest;
-        }
+}
 
-EC_KEY *EC_KEY_dup(const EC_KEY *ec_key)
-        {
+EC_KEY *
+EC_KEY_dup(const EC_KEY * ec_key)
+{
         EC_KEY *ret = EC_KEY_new();
         if (ret == NULL)
                 return NULL;
-        if (EC_KEY_copy(ret, ec_key) == NULL)
-                {
+        if (EC_KEY_copy(ret, ec_key) == NULL) {
                 EC_KEY_free(ret);
                 return NULL;
-                }
-        return ret;
         }
+        return ret;
+}
 
-int EC_KEY_up_ref(EC_KEY *r)
-        {
+int 
+EC_KEY_up_ref(EC_KEY * r)
+{
         int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_EC);
         return ((i > 1) ? 1 : 0);
-        }
+}
 
-int EC_KEY_generate_key(EC_KEY *eckey)
-        {       
-        int     ok = 0;
-        BN_CTX  *ctx = NULL;
-        BIGNUM  *priv_key = NULL, *order = NULL;
+int 
+EC_KEY_generate_key(EC_KEY * eckey)
+{
+        int ok = 0;
+        BN_CTX *ctx = NULL;
+        BIGNUM *priv_key = NULL, *order = NULL;
         EC_POINT *pub_key = NULL;
 
-        if (!eckey || !eckey->group)
-                {
+        if (!eckey || !eckey->group) {
                 ECerr(EC_F_EC_KEY_GENERATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
                 return 0;
-                }
-
-        if ((order = BN_new()) == NULL) goto err;
-        if ((ctx = BN_CTX_new()) == NULL) goto err;
+        }
+        if ((order = BN_new()) == NULL)
+                goto err;
+        if ((ctx = BN_CTX_new()) == NULL)
+                goto err;
 
-        if (eckey->priv_key == NULL)
-                {
+        if (eckey->priv_key == NULL) {
                 priv_key = BN_new();
                 if (priv_key == NULL)
                         goto err;
-                }
-        else
+        } else
                 priv_key = eckey->priv_key;
 
         if (!EC_GROUP_get_order(eckey->group, order, ctx))
@@ -244,127 +242,115 @@ int EC_KEY_generate_key(EC_KEY *eckey)
                         goto err;
         while (BN_is_zero(priv_key));
 
-        if (eckey->pub_key == NULL)
-                {
+        if (eckey->pub_key == NULL) {
                 pub_key = EC_POINT_new(eckey->group);
                 if (pub_key == NULL)
                         goto err;
-                }
-        else
+        } else
                 pub_key = eckey->pub_key;
 
         if (!EC_POINT_mul(eckey->group, pub_key, priv_key, NULL, NULL, ctx))
                 goto err;
 
         eckey->priv_key = priv_key;
-        eckey->pub_key  = pub_key;
+        eckey->pub_key = pub_key;
 
-        ok=1;
+        ok = 1;
 
-err:    
+err:
         if (order)
                 BN_free(order);
-        if (pub_key  != NULL && eckey->pub_key  == NULL)
+        if (pub_key != NULL && eckey->pub_key == NULL)
                 EC_POINT_free(pub_key);
         if (priv_key != NULL && eckey->priv_key == NULL)
                 BN_free(priv_key);
         if (ctx != NULL)
                 BN_CTX_free(ctx);
-        return(ok);
-        }
+        return (ok);
+}
 
-int EC_KEY_check_key(const EC_KEY *eckey)
-        {
-        int     ok   = 0;
-        BN_CTX  *ctx = NULL;
-        const BIGNUM    *order  = NULL;
+int 
+EC_KEY_check_key(const EC_KEY * eckey)
+{
+        int ok = 0;
+        BN_CTX *ctx = NULL;
+        const BIGNUM *order = NULL;
         EC_POINT *point = NULL;
 
-        if (!eckey || !eckey->group || !eckey->pub_key)
-                {
+        if (!eckey || !eckey->group || !eckey->pub_key) {
                 ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_PASSED_NULL_PARAMETER);
                 return 0;
-                }
-
-        if (EC_POINT_is_at_infinity(eckey->group, eckey->pub_key))
-                {
+        }
+        if (EC_POINT_is_at_infinity(eckey->group, eckey->pub_key)) {
                 ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_AT_INFINITY);
                 goto err;
-                }
-
+        }
         if ((ctx = BN_CTX_new()) == NULL)
                 goto err;
         if ((point = EC_POINT_new(eckey->group)) == NULL)
                 goto err;
 
         /* testing whether the pub_key is on the elliptic curve */
-        if (!EC_POINT_is_on_curve(eckey->group, eckey->pub_key, ctx))
-                {
+        if (!EC_POINT_is_on_curve(eckey->group, eckey->pub_key, ctx)) {
                 ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_IS_NOT_ON_CURVE);
                 goto err;
-                }
+        }
         /* testing whether pub_key * order is the point at infinity */
         order = &eckey->group->order;
-        if (BN_is_zero(order))
-                {
+        if (BN_is_zero(order)) {
                 ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_GROUP_ORDER);
                 goto err;
-                }
-        if (!EC_POINT_mul(eckey->group, point, NULL, eckey->pub_key, order, ctx))
-                {
+        }
+        if (!EC_POINT_mul(eckey->group, point, NULL, eckey->pub_key, order, ctx)) {
                 ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB);
                 goto err;
-                }
-        if (!EC_POINT_is_at_infinity(eckey->group, point))
-                {
+        }
+        if (!EC_POINT_is_at_infinity(eckey->group, point)) {
                 ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER);
                 goto err;
-                }
-        /* in case the priv_key is present : 
-         * check if generator * priv_key == pub_key 
+        }
+        /*
+         * in case the priv_key is present : check if generator * priv_key ==
+         * pub_key
          */
-        if (eckey->priv_key)
-                {
-                if (BN_cmp(eckey->priv_key, order) >= 0)
-                        {
+        if (eckey->priv_key) {
+                if (BN_cmp(eckey->priv_key, order) >= 0) {
                         ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER);
                         goto err;
-                        }
+                }
                 if (!EC_POINT_mul(eckey->group, point, eckey->priv_key,
-                        NULL, NULL, ctx))
-                        {
+                        NULL, NULL, ctx)) {
                         ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB);
                         goto err;
-                        }
-                if (EC_POINT_cmp(eckey->group, point, eckey->pub_key, 
-                        ctx) != 0)
-                        {
+                }
+                if (EC_POINT_cmp(eckey->group, point, eckey->pub_key,
+                        ctx) != 0) {
                         ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_PRIVATE_KEY);
                         goto err;
-                        }
                 }
+        }
         ok = 1;
 err:
-        if (ctx   != NULL)
+        if (ctx != NULL)
                 BN_CTX_free(ctx);
         if (point != NULL)
                 EC_POINT_free(point);
-        return(ok);
-        }
+        return (ok);
+}
 
-int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x, BIGNUM *y)
-        {
+int 
+EC_KEY_set_public_key_affine_coordinates(EC_KEY * key, BIGNUM * x, BIGNUM * y)
+{
         BN_CTX *ctx = NULL;
         BIGNUM *tx, *ty;
         EC_POINT *point = NULL;
         int ok = 0, tmp_nid, is_char_two = 0;
 
-        if (!key || !key->group || !x || !y)
-                {
+        if (!key || !key->group || !x || !y) {
                 ECerr(EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES,
-                                                ERR_R_PASSED_NULL_PARAMETER);
+                    ERR_R_PASSED_NULL_PARAMETER);
                 return 0;
-                }
+        }
         ctx = BN_CTX_new();
         if (!ctx)
                 goto err;
@@ -376,41 +362,38 @@ int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x, BIGNUM *y)
 
         tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(key->group));
 
-        if (tmp_nid == NID_X9_62_characteristic_two_field)
+        if (tmp_nid == NID_X9_62_characteristic_two_field)
                 is_char_two = 1;
 
         tx = BN_CTX_get(ctx);
         ty = BN_CTX_get(ctx);
 #ifndef OPENSSL_NO_EC2M
-        if (is_char_two)
-                {
+        if (is_char_two) {
                 if (!EC_POINT_set_affine_coordinates_GF2m(key->group, point,
-                                                                x, y, ctx))
+                        x, y, ctx))
                         goto err;
                 if (!EC_POINT_get_affine_coordinates_GF2m(key->group, point,
-                                                                tx, ty, ctx))
+                        tx, ty, ctx))
                         goto err;
-                }
-        else
+        } else
 #endif
-                {
+        {
                 if (!EC_POINT_set_affine_coordinates_GFp(key->group, point,
-                                                                x, y, ctx))
+                        x, y, ctx))
                         goto err;
                 if (!EC_POINT_get_affine_coordinates_GFp(key->group, point,
-                                                                tx, ty, ctx))
+                        tx, ty, ctx))
                         goto err;
-                }
-        /* Check if retrieved coordinates match originals: if not values
-         * are out of range.
+        }
+        /*
+         * Check if retrieved coordinates match originals: if not values are
+         * out of range.
          */
-        if (BN_cmp(x, tx) || BN_cmp(y, ty))
-                {
+        if (BN_cmp(x, tx) || BN_cmp(y, ty)) {
                 ECerr(EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES,
-                        EC_R_COORDINATES_OUT_OF_RANGE);
+                    EC_R_COORDINATES_OUT_OF_RANGE);
                 goto err;
-                }
-
+        }
         if (!EC_KEY_set_public_key(key, point))
                 goto err;
 
@@ -419,79 +402,92 @@ int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x, BIGNUM *y)
 
         ok = 1;
 
-        err:
+err:
         if (ctx)
                 BN_CTX_free(ctx);
         if (point)
                 EC_POINT_free(point);
         return ok;
 
-        }
+}
 
-const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key)
-        {
+const EC_GROUP *
+EC_KEY_get0_group(const EC_KEY * key)
+{
         return key->group;
-        }
+}
 
-int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group)
-        {
+int 
+EC_KEY_set_group(EC_KEY * key, const EC_GROUP * group)
+{
         if (key->group != NULL)
                 EC_GROUP_free(key->group);
         key->group = EC_GROUP_dup(group);
         return (key->group == NULL) ? 0 : 1;
-        }
+}
 
-const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key)
-        {
+const BIGNUM *
+EC_KEY_get0_private_key(const EC_KEY * key)
+{
         return key->priv_key;
-        }
+}
 
-int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *priv_key)
-        {
+int 
+EC_KEY_set_private_key(EC_KEY * key, const BIGNUM * priv_key)
+{
         if (key->priv_key)
                 BN_clear_free(key->priv_key);
         key->priv_key = BN_dup(priv_key);
         return (key->priv_key == NULL) ? 0 : 1;
-        }
+}
 
-const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key)
-        {
+const EC_POINT *
+EC_KEY_get0_public_key(const EC_KEY * key)
+{
         return key->pub_key;
-        }
+}
 
-int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub_key)
-        {
+int 
+EC_KEY_set_public_key(EC_KEY * key, const EC_POINT * pub_key)
+{
         if (key->pub_key != NULL)
                 EC_POINT_free(key->pub_key);
         key->pub_key = EC_POINT_dup(pub_key, key->group);
         return (key->pub_key == NULL) ? 0 : 1;
-        }
+}
 
-unsigned int EC_KEY_get_enc_flags(const EC_KEY *key)
-        {
+unsigned int 
+EC_KEY_get_enc_flags(const EC_KEY * key)
+{
         return key->enc_flag;
-        }
+}
 
-void EC_KEY_set_enc_flags(EC_KEY *key, unsigned int flags)
-        {
+void 
+EC_KEY_set_enc_flags(EC_KEY * key, unsigned int flags)
+{
         key->enc_flag = flags;
-        }
+}
 
-point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key)
-        {
+point_conversion_form_t 
+EC_KEY_get_conv_form(const EC_KEY * key)
+{
         return key->conv_form;
-        }
+}
 
-void EC_KEY_set_conv_form(EC_KEY *key, point_conversion_form_t cform)
-        {
+void 
+EC_KEY_set_conv_form(EC_KEY * key, point_conversion_form_t cform)
+{
         key->conv_form = cform;
         if (key->group != NULL)
                 EC_GROUP_set_point_conversion_form(key->group, cform);
-        }
-
-void *EC_KEY_get_key_method_data(EC_KEY *key,
-        void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *))
-        {
+}
+
+void *
+EC_KEY_get_key_method_data(EC_KEY *key,
+    void *(*dup_func) (void *),
+    void (*free_func) (void *),
+    void (*clear_free_func) (void *))
+{
         void *ret;
 
         CRYPTO_r_lock(CRYPTO_LOCK_EC);
@@ -499,11 +495,14 @@ void *EC_KEY_get_key_method_data(EC_KEY *key,
         CRYPTO_r_unlock(CRYPTO_LOCK_EC);
 
         return ret;
-        }
-
-void *EC_KEY_insert_key_method_data(EC_KEY *key, void *data,
-        void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *))
-        {
+}
+
+void *
+EC_KEY_insert_key_method_data(EC_KEY * key, void *data,
+    void *(*dup_func) (void *),
+    void (*free_func) (void *),
+    void (*clear_free_func) (void *))
+{
         EC_EXTRA_DATA *ex_data;
 
         CRYPTO_w_lock(CRYPTO_LOCK_EC);
@@ -513,32 +512,37 @@ void *EC_KEY_insert_key_method_data(EC_KEY *key, void *data,
         CRYPTO_w_unlock(CRYPTO_LOCK_EC);
 
         return ex_data;
-        }
+}
 
-void EC_KEY_set_asn1_flag(EC_KEY *key, int flag)
-        {
+void 
+EC_KEY_set_asn1_flag(EC_KEY * key, int flag)
+{
         if (key->group != NULL)
                 EC_GROUP_set_asn1_flag(key->group, flag);
-        }
+}
 
-int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx)
-        {
+int 
+EC_KEY_precompute_mult(EC_KEY * key, BN_CTX * ctx)
+{
         if (key->group == NULL)
                 return 0;
         return EC_GROUP_precompute_mult(key->group, ctx);
-        }
+}
 
-int EC_KEY_get_flags(const EC_KEY *key)
-        {
+int 
+EC_KEY_get_flags(const EC_KEY * key)
+{
         return key->flags;
-        }
+}
 
-void EC_KEY_set_flags(EC_KEY *key, int flags)
-        {
+void 
+EC_KEY_set_flags(EC_KEY * key, int flags)
+{
         key->flags |= flags;
-        }
+}
 
-void EC_KEY_clear_flags(EC_KEY *key, int flags)
-        {
+void 
+EC_KEY_clear_flags(EC_KEY * key, int flags)
+{
         key->flags &= ~flags;
-        }
+}