-/* crypto/ec/ec_print.c */
-/* ====================================================================
- * Copyright (c) 1998-2002 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 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <openssl/crypto.h>
#include "ec_lcl.h"
-BIGNUM *EC_POINT_point2bn(const EC_GROUP *group,
- const EC_POINT *point,
+BIGNUM *EC_POINT_point2bn(const EC_GROUP *group,
+ const EC_POINT *point,
point_conversion_form_t form,
- BIGNUM *ret,
- BN_CTX *ctx)
- {
- size_t buf_len=0;
- unsigned char *buf;
-
- buf_len = EC_POINT_point2oct(group, point, form,
- NULL, 0, ctx);
- if (buf_len == 0)
- return NULL;
+ BIGNUM *ret, BN_CTX *ctx)
+{
+ size_t buf_len = 0;
+ unsigned char *buf;
- if ((buf = OPENSSL_malloc(buf_len)) == NULL)
- return NULL;
+ buf_len = EC_POINT_point2buf(group, point, form, &buf, ctx);
- if (!EC_POINT_point2oct(group, point, form, buf, buf_len, ctx))
- {
- OPENSSL_free(buf);
- return NULL;
- }
+ if (buf_len == 0)
+ return NULL;
- ret = BN_bin2bn(buf, buf_len, ret);
+ ret = BN_bin2bn(buf, buf_len, ret);
- OPENSSL_free(buf);
+ OPENSSL_free(buf);
- return ret;
+ return ret;
}
EC_POINT *EC_POINT_bn2point(const EC_GROUP *group,
- const BIGNUM *bn,
- EC_POINT *point,
- BN_CTX *ctx)
- {
- size_t buf_len=0;
- unsigned char *buf;
- EC_POINT *ret;
-
- if ((buf_len = BN_num_bytes(bn)) == 0) return NULL;
- buf = OPENSSL_malloc(buf_len);
- if (buf == NULL)
- return NULL;
-
- if (!BN_bn2bin(bn, buf))
- {
- OPENSSL_free(buf);
- return NULL;
- }
-
- if (point == NULL)
- {
- if ((ret = EC_POINT_new(group)) == NULL)
- {
- OPENSSL_free(buf);
- return NULL;
- }
- }
- else
- ret = point;
-
- if (!EC_POINT_oct2point(group, ret, buf, buf_len, ctx))
- {
- if (point == NULL)
- EC_POINT_clear_free(ret);
- OPENSSL_free(buf);
- return NULL;
- }
-
- OPENSSL_free(buf);
- return ret;
- }
+ const BIGNUM *bn, EC_POINT *point, BN_CTX *ctx)
+{
+ size_t buf_len = 0;
+ unsigned char *buf;
+ EC_POINT *ret;
+
+ if ((buf_len = BN_num_bytes(bn)) == 0)
+ return NULL;
+ buf = OPENSSL_malloc(buf_len);
+ if (buf == NULL)
+ return NULL;
+
+ if (!BN_bn2bin(bn, buf)) {
+ OPENSSL_free(buf);
+ return NULL;
+ }
+
+ if (point == NULL) {
+ if ((ret = EC_POINT_new(group)) == NULL) {
+ OPENSSL_free(buf);
+ return NULL;
+ }
+ } else
+ ret = point;
+
+ if (!EC_POINT_oct2point(group, ret, buf, buf_len, ctx)) {
+ if (ret != point)
+ EC_POINT_clear_free(ret);
+ OPENSSL_free(buf);
+ return NULL;
+ }
+
+ OPENSSL_free(buf);
+ return ret;
+}
static const char *HEX_DIGITS = "0123456789ABCDEF";
/* the return value must be freed (using OPENSSL_free()) */
char *EC_POINT_point2hex(const EC_GROUP *group,
const EC_POINT *point,
- point_conversion_form_t form,
- BN_CTX *ctx)
- {
- char *ret, *p;
- size_t buf_len=0,i;
- unsigned char *buf, *pbuf;
-
- buf_len = EC_POINT_point2oct(group, point, form,
- NULL, 0, ctx);
- if (buf_len == 0)
- return NULL;
-
- if ((buf = OPENSSL_malloc(buf_len)) == NULL)
- return NULL;
-
- if (!EC_POINT_point2oct(group, point, form, buf, buf_len, ctx))
- {
- OPENSSL_free(buf);
- return NULL;
- }
-
- ret = (char *)OPENSSL_malloc(buf_len*2+2);
- if (ret == NULL)
- {
- OPENSSL_free(buf);
- return NULL;
- }
- p = ret;
- pbuf = buf;
- for (i=buf_len; i > 0; i--)
- {
- int v = (int) *(pbuf++);
- *(p++)=HEX_DIGITS[v>>4];
- *(p++)=HEX_DIGITS[v&0x0F];
- }
- *p='\0';
-
- OPENSSL_free(buf);
-
- return ret;
- }
+ point_conversion_form_t form, BN_CTX *ctx)
+{
+ char *ret, *p;
+ size_t buf_len = 0, i;
+ unsigned char *buf = NULL, *pbuf;
+
+ buf_len = EC_POINT_point2buf(group, point, form, &buf, ctx);
+
+ if (buf_len == 0)
+ return NULL;
+
+ ret = OPENSSL_malloc(buf_len * 2 + 2);
+ if (ret == NULL) {
+ OPENSSL_free(buf);
+ return NULL;
+ }
+ p = ret;
+ pbuf = buf;
+ for (i = buf_len; i > 0; i--) {
+ int v = (int)*(pbuf++);
+ *(p++) = HEX_DIGITS[v >> 4];
+ *(p++) = HEX_DIGITS[v & 0x0F];
+ }
+ *p = '\0';
+
+ OPENSSL_free(buf);
+
+ return ret;
+}
EC_POINT *EC_POINT_hex2point(const EC_GROUP *group,
- const char *buf,
- EC_POINT *point,
- BN_CTX *ctx)
- {
- EC_POINT *ret=NULL;
- BIGNUM *tmp_bn=NULL;
+ const char *buf, EC_POINT *point, BN_CTX *ctx)
+{
+ EC_POINT *ret = NULL;
+ BIGNUM *tmp_bn = NULL;
- if (!BN_hex2bn(&tmp_bn, buf))
- return NULL;
+ if (!BN_hex2bn(&tmp_bn, buf))
+ return NULL;
- ret = EC_POINT_bn2point(group, tmp_bn, point, ctx);
+ ret = EC_POINT_bn2point(group, tmp_bn, point, ctx);
- BN_clear_free(tmp_bn);
+ BN_clear_free(tmp_bn);
- return ret;
- }
+ return ret;
+}
projects / openssl.git / blobdiff