1 files changed, 563 insertions, 0 deletions

diff --git a/src/lib/libcrypto/ec/ec_key.c b/src/lib/libcrypto/ec/ec_key.c
new file mode 100644
index 0000000000..bf9fd2dc2c
--- /dev/null
+++ b/src/lib/libcrypto/ec/ec_key.c
@@ -0,0 +1,563 @@
+/* crypto/ec/ec_key.c */
+/*
+ * Written by Nils Larsch for the OpenSSL project.
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2005 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    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
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * Portions originally developed by SUN MICROSYSTEMS, INC., and 
+ * contributed to the OpenSSL project.
+ */
+
+#include <string.h>
+#include "ec_lcl.h"
+#include <openssl/err.h>
+#ifdef OPENSSL_FIPS
+#include <openssl/fips.h>
+#endif
+
+EC_KEY *EC_KEY_new(void)
+        {
+        EC_KEY *ret;
+
+        ret=(EC_KEY *)OPENSSL_malloc(sizeof(EC_KEY));
+        if (ret == NULL)
+                {
+                ECerr(EC_F_EC_KEY_NEW, ERR_R_MALLOC_FAILURE);
+                return(NULL);
+                }
+
+        ret->version = 1;       
+        ret->flags = 0;
+        ret->group   = NULL;
+        ret->pub_key = NULL;
+        ret->priv_key= NULL;
+        ret->enc_flag= 0; 
+        ret->conv_form = POINT_CONVERSION_UNCOMPRESSED;
+        ret->references= 1;
+        ret->method_data = NULL;
+        return(ret);
+        }
+
+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)
+                {
+                EC_KEY_free(ret);
+                return NULL;
+                }
+        return ret;
+        }
+
+void EC_KEY_free(EC_KEY *r)
+        {
+        int i;
+
+        if (r == NULL) return;
+
+        i=CRYPTO_add(&r->references,-1,CRYPTO_LOCK_EC);
+#ifdef REF_PRINT
+        REF_PRINT("EC_KEY",r);
+#endif
+        if (i > 0) return;
+#ifdef REF_CHECK
+        if (i < 0)
+                {
+                fprintf(stderr,"EC_KEY_free, bad reference count\n");
+                abort();
+                }
+#endif
+
+        if (r->group    != NULL) 
+                EC_GROUP_free(r->group);
+        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_free(r);
+        }
+
+EC_KEY *EC_KEY_copy(EC_KEY *dest, const EC_KEY *src)
+        {
+        EC_EXTRA_DATA *d;
+
+        if (dest == NULL || src == NULL)
+                {
+                ECerr(EC_F_EC_KEY_COPY, ERR_R_PASSED_NULL_PARAMETER);
+                return NULL;
+                }
+        /* copy the parameters */
+        if (src->group)
+                {
+                const EC_METHOD *meth = EC_GROUP_method_of(src->group);
+                /* clear the old group */
+                if (dest->group)
+                        EC_GROUP_free(dest->group);
+                dest->group = EC_GROUP_new(meth);
+                if (dest->group == NULL)
+                        return NULL;
+                if (!EC_GROUP_copy(dest->group, src->group))
+                        return NULL;
+                }
+        /*  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);
+                if (dest->pub_key == NULL)
+                        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)
+                        {
+                        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)
+                {
+                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))
+                        return 0;
+                }
+
+        /* copy the rest */
+        dest->enc_flag  = src->enc_flag;
+        dest->conv_form = src->conv_form;
+        dest->version   = src->version;
+        dest->flags = src->flags;
+
+        return dest;
+        }
+
+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)
+                {
+                EC_KEY_free(ret);
+                return NULL;
+                }
+        return ret;
+        }
+
+int EC_KEY_up_ref(EC_KEY *r)
+        {
+        int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_EC);
+#ifdef REF_PRINT
+        REF_PRINT("EC_KEY",r);
+#endif
+#ifdef REF_CHECK
+        if (i < 2)
+                {
+                fprintf(stderr, "EC_KEY_up, bad reference count\n");
+                abort();
+                }
+#endif
+        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;
+        EC_POINT *pub_key = NULL;
+
+#ifdef OPENSSL_FIPS
+        if (FIPS_mode())
+                return FIPS_ec_key_generate_key(eckey);
+#endif
+
+        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 (eckey->priv_key == NULL)
+                {
+                priv_key = BN_new();
+                if (priv_key == NULL)
+                        goto err;
+                }
+        else
+                priv_key = eckey->priv_key;
+
+        if (!EC_GROUP_get_order(eckey->group, order, ctx))
+                goto err;
+
+        do
+                if (!BN_rand_range(priv_key, order))
+                        goto err;
+        while (BN_is_zero(priv_key));
+
+        if (eckey->pub_key == NULL)
+                {
+                pub_key = EC_POINT_new(eckey->group);
+                if (pub_key == NULL)
+                        goto err;
+                }
+        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;
+
+        ok=1;
+
+err:    
+        if (order)
+                BN_free(order);
+        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);
+        }
+
+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)
+                {
+                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))
+                {
+                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))
+                {
+                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))
+                {
+                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))
+                {
+                ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB);
+                goto err;
+                }
+        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 
+         */
+        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))
+                        {
+                        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)
+                        {
+                        ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_PRIVATE_KEY);
+                        goto err;
+                        }
+                }
+        ok = 1;
+err:
+        if (ctx   != NULL)
+                BN_CTX_free(ctx);
+        if (point != NULL)
+                EC_POINT_free(point);
+        return(ok);
+        }
+
+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)
+                {
+                ECerr(EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES,
+                                                ERR_R_PASSED_NULL_PARAMETER);
+                return 0;
+                }
+        ctx = BN_CTX_new();
+        if (!ctx)
+                goto err;
+
+        point = EC_POINT_new(key->group);
+
+        if (!point)
+                goto err;
+
+        tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(key->group));
+
+        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 (!EC_POINT_set_affine_coordinates_GF2m(key->group, point,
+                                                                x, y, ctx))
+                        goto err;
+                if (!EC_POINT_get_affine_coordinates_GF2m(key->group, point,
+                                                                tx, ty, ctx))
+                        goto err;
+                }
+        else
+#endif
+                {
+                if (!EC_POINT_set_affine_coordinates_GFp(key->group, point,
+                                                                x, y, ctx))
+                        goto err;
+                if (!EC_POINT_get_affine_coordinates_GFp(key->group, point,
+                                                                tx, ty, ctx))
+                        goto err;
+                }
+        /* Check if retrieved coordinates match originals: if not values
+         * are out of range.
+         */
+        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);
+                goto err;
+                }
+
+        if (!EC_KEY_set_public_key(key, point))
+                goto err;
+
+        if (EC_KEY_check_key(key) == 0)
+                goto err;
+
+        ok = 1;
+
+        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)
+        {
+        return key->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)
+        {
+        return key->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)
+        {
+        return key->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)
+        {
+        return key->enc_flag;
+        }
+
+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)
+        {
+        return key->conv_form;
+        }
+
+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 *))
+        {
+        return EC_EX_DATA_get_data(key->method_data, dup_func, free_func, clear_free_func);
+        }
+
+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);
+        ex_data = EC_EX_DATA_get_data(key->method_data, dup_func, free_func, clear_free_func);
+        if (ex_data == NULL)
+                EC_EX_DATA_set_data(&key->method_data, data, dup_func, free_func, clear_free_func);
+        CRYPTO_w_unlock(CRYPTO_LOCK_EC);
+        }
+
+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)
+        {
+        if (key->group == NULL)
+                return 0;
+        return EC_GROUP_precompute_mult(key->group, ctx);
+        }
+
+int EC_KEY_get_flags(const EC_KEY *key)
+        {
+        return key->flags;
+        }
+
+void EC_KEY_set_flags(EC_KEY *key, int flags)
+        {
+        key->flags |= flags;
+        }
+
+void EC_KEY_clear_flags(EC_KEY *key, int flags)
+        {
+        key->flags &= ~flags;
+        }