diff options
Diffstat (limited to 'openssl/crypto/ecdh/ech_ossl.c')
| -rw-r--r-- | openssl/crypto/ecdh/ech_ossl.c | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/openssl/crypto/ecdh/ech_ossl.c b/openssl/crypto/ecdh/ech_ossl.c deleted file mode 100644 index 2a40ff12..00000000 --- a/openssl/crypto/ecdh/ech_ossl.c +++ /dev/null @@ -1,213 +0,0 @@ -/* crypto/ecdh/ech_ossl.c */ -/* ==================================================================== - * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. - * - * The Elliptic Curve Public-Key Crypto Library (ECC Code) included - * herein is developed by SUN MICROSYSTEMS, INC., and is contributed - * to the OpenSSL project. - * - * The ECC Code is licensed pursuant to the OpenSSL open source - * license provided below. - * - * The ECDH software is originally written by Douglas Stebila of - * Sun Microsystems Laboratories. - * - */ -/* ==================================================================== - * Copyright (c) 1998-2003 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). - * - */ - - -#include <string.h> -#include <limits.h> - -#include "cryptlib.h" - -#include "ech_locl.h" -#include <openssl/err.h> -#include <openssl/sha.h> -#include <openssl/obj_mac.h> -#include <openssl/bn.h> - -static int ecdh_compute_key(void *out, size_t len, const EC_POINT *pub_key, - EC_KEY *ecdh, - void *(*KDF)(const void *in, size_t inlen, void *out, size_t *outlen)); - -static ECDH_METHOD openssl_ecdh_meth = { - "OpenSSL ECDH method", - ecdh_compute_key, -#if 0 - NULL, /* init */ - NULL, /* finish */ -#endif - 0, /* flags */ - NULL /* app_data */ -}; - -const ECDH_METHOD *ECDH_OpenSSL(void) - { - return &openssl_ecdh_meth; - } - - -/* This implementation is based on the following primitives in the IEEE 1363 standard: - * - ECKAS-DH1 - * - ECSVDP-DH - * Finally an optional KDF is applied. - */ -static int ecdh_compute_key(void *out, size_t outlen, const EC_POINT *pub_key, - EC_KEY *ecdh, - void *(*KDF)(const void *in, size_t inlen, void *out, size_t *outlen)) - { - BN_CTX *ctx; - EC_POINT *tmp=NULL; - BIGNUM *x=NULL, *y=NULL; - const BIGNUM *priv_key; - const EC_GROUP* group; - int ret= -1; - size_t buflen, len; - unsigned char *buf=NULL; - - if (outlen > INT_MAX) - { - ECDHerr(ECDH_F_ECDH_COMPUTE_KEY,ERR_R_MALLOC_FAILURE); /* sort of, anyway */ - return -1; - } - - if ((ctx = BN_CTX_new()) == NULL) goto err; - BN_CTX_start(ctx); - x = BN_CTX_get(ctx); - y = BN_CTX_get(ctx); - - priv_key = EC_KEY_get0_private_key(ecdh); - if (priv_key == NULL) - { - ECDHerr(ECDH_F_ECDH_COMPUTE_KEY,ECDH_R_NO_PRIVATE_VALUE); - goto err; - } - - group = EC_KEY_get0_group(ecdh); - if ((tmp=EC_POINT_new(group)) == NULL) - { - ECDHerr(ECDH_F_ECDH_COMPUTE_KEY,ERR_R_MALLOC_FAILURE); - goto err; - } - - if (!EC_POINT_mul(group, tmp, NULL, pub_key, priv_key, ctx)) - { - ECDHerr(ECDH_F_ECDH_COMPUTE_KEY,ECDH_R_POINT_ARITHMETIC_FAILURE); - goto err; - } - - if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) == NID_X9_62_prime_field) - { - if (!EC_POINT_get_affine_coordinates_GFp(group, tmp, x, y, ctx)) - { - ECDHerr(ECDH_F_ECDH_COMPUTE_KEY,ECDH_R_POINT_ARITHMETIC_FAILURE); - goto err; - } - } - else - { - if (!EC_POINT_get_affine_coordinates_GF2m(group, tmp, x, y, ctx)) - { - ECDHerr(ECDH_F_ECDH_COMPUTE_KEY,ECDH_R_POINT_ARITHMETIC_FAILURE); - goto err; - } - } - - buflen = (EC_GROUP_get_degree(group) + 7)/8; - len = BN_num_bytes(x); - if (len > buflen) - { - ECDHerr(ECDH_F_ECDH_COMPUTE_KEY,ERR_R_INTERNAL_ERROR); - goto err; - } - if ((buf = OPENSSL_malloc(buflen)) == NULL) - { - ECDHerr(ECDH_F_ECDH_COMPUTE_KEY,ERR_R_MALLOC_FAILURE); - goto err; - } - - memset(buf, 0, buflen - len); - if (len != (size_t)BN_bn2bin(x, buf + buflen - len)) - { - ECDHerr(ECDH_F_ECDH_COMPUTE_KEY,ERR_R_BN_LIB); - goto err; - } - - if (KDF != 0) - { - if (KDF(buf, buflen, out, &outlen) == NULL) - { - ECDHerr(ECDH_F_ECDH_COMPUTE_KEY,ECDH_R_KDF_FAILED); - goto err; - } - ret = outlen; - } - else - { - /* no KDF, just copy as much as we can */ - if (outlen > buflen) - outlen = buflen; - memcpy(out, buf, outlen); - ret = outlen; - } - -err: - if (tmp) EC_POINT_free(tmp); - if (ctx) BN_CTX_end(ctx); - if (ctx) BN_CTX_free(ctx); - if (buf) OPENSSL_free(buf); - return(ret); - } |