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/* $OpenBSD: eck_prn.c,v 1.11 2015/06/20 14:17:07 jsing Exp $ */ |
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/* |
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* Written by Nils Larsch for the OpenSSL project. |
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*/ |
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/* ==================================================================== |
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* Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. All advertising materials mentioning features or use of this |
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* software must display the following acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)" |
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* |
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
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* endorse or promote products derived from this software without |
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* prior written permission. For written permission, please contact |
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* openssl-core@openssl.org. |
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* |
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* 5. Products derived from this software may not be called "OpenSSL" |
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* nor may "OpenSSL" appear in their names without prior written |
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* permission of the OpenSSL Project. |
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* |
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* 6. Redistributions of any form whatsoever must retain the following |
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* acknowledgment: |
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* "This product includes software developed by the OpenSSL Project |
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)" |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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* OF THE POSSIBILITY OF SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This product includes cryptographic software written by Eric Young |
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* (eay@cryptsoft.com). This product includes software written by Tim |
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* Hudson (tjh@cryptsoft.com). |
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* |
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*/ |
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/* ==================================================================== |
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* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. |
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* Portions originally developed by SUN MICROSYSTEMS, INC., and |
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* contributed to the OpenSSL project. |
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*/ |
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#include <stdio.h> |
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#include <string.h> |
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#include <openssl/opensslconf.h> |
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#include <openssl/bn.h> |
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#include <openssl/ec.h> |
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#include <openssl/err.h> |
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#include <openssl/evp.h> |
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int |
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ECPKParameters_print_fp(FILE * fp, const EC_GROUP * x, int off) |
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{ |
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BIO *b; |
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int ret; |
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80 |
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if ((b = BIO_new(BIO_s_file())) == NULL) { |
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ECerr(EC_F_ECPKPARAMETERS_PRINT_FP, ERR_R_BUF_LIB); |
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return (0); |
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} |
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BIO_set_fp(b, fp, BIO_NOCLOSE); |
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ret = ECPKParameters_print(b, x, off); |
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BIO_free(b); |
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return (ret); |
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} |
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int |
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EC_KEY_print_fp(FILE * fp, const EC_KEY * x, int off) |
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{ |
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BIO *b; |
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int ret; |
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if ((b = BIO_new(BIO_s_file())) == NULL) { |
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ECerr(EC_F_EC_KEY_PRINT_FP, ERR_R_BIO_LIB); |
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return (0); |
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} |
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BIO_set_fp(b, fp, BIO_NOCLOSE); |
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ret = EC_KEY_print(b, x, off); |
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BIO_free(b); |
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return (ret); |
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} |
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int |
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ECParameters_print_fp(FILE * fp, const EC_KEY * x) |
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{ |
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BIO *b; |
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int ret; |
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if ((b = BIO_new(BIO_s_file())) == NULL) { |
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ECerr(EC_F_ECPARAMETERS_PRINT_FP, ERR_R_BIO_LIB); |
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return (0); |
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} |
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BIO_set_fp(b, fp, BIO_NOCLOSE); |
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ret = ECParameters_print(b, x); |
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BIO_free(b); |
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return (ret); |
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} |
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int |
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EC_KEY_print(BIO * bp, const EC_KEY * x, int off) |
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{ |
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EVP_PKEY *pk; |
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int ret; |
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pk = EVP_PKEY_new(); |
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if (!pk || !EVP_PKEY_set1_EC_KEY(pk, (EC_KEY *) x)) |
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return 0; |
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ret = EVP_PKEY_print_private(bp, pk, off, NULL); |
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EVP_PKEY_free(pk); |
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return ret; |
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} |
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int |
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ECParameters_print(BIO * bp, const EC_KEY * x) |
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{ |
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EVP_PKEY *pk; |
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int ret; |
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pk = EVP_PKEY_new(); |
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if (!pk || !EVP_PKEY_set1_EC_KEY(pk, (EC_KEY *) x)) |
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return 0; |
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ret = EVP_PKEY_print_params(bp, pk, 4, NULL); |
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EVP_PKEY_free(pk); |
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return ret; |
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} |
147 |
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148 |
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static int |
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print_bin(BIO * fp, const char *str, const unsigned char *num, |
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size_t len, int off); |
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152 |
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int |
153 |
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ECPKParameters_print(BIO * bp, const EC_GROUP * x, int off) |
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{ |
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unsigned char *buffer = NULL; |
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size_t buf_len = 0, i; |
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int ret = 0, reason = ERR_R_BIO_LIB; |
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BN_CTX *ctx = NULL; |
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const EC_POINT *point = NULL; |
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BIGNUM *p = NULL, *a = NULL, *b = NULL, *gen = NULL, *order = NULL, |
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*cofactor = NULL; |
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const unsigned char *seed; |
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size_t seed_len = 0; |
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const char *nname; |
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static const char *gen_compressed = "Generator (compressed):"; |
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static const char *gen_uncompressed = "Generator (uncompressed):"; |
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static const char *gen_hybrid = "Generator (hybrid):"; |
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if (!x) { |
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reason = ERR_R_PASSED_NULL_PARAMETER; |
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goto err; |
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} |
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ctx = BN_CTX_new(); |
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if (ctx == NULL) { |
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reason = ERR_R_MALLOC_FAILURE; |
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goto err; |
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} |
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if (EC_GROUP_get_asn1_flag(x)) { |
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/* the curve parameter are given by an asn1 OID */ |
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int nid; |
182 |
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183 |
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if (!BIO_indent(bp, off, 128)) |
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goto err; |
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nid = EC_GROUP_get_curve_name(x); |
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if (nid == 0) |
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goto err; |
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if (BIO_printf(bp, "ASN1 OID: %s", OBJ_nid2sn(nid)) <= 0) |
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goto err; |
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if (BIO_printf(bp, "\n") <= 0) |
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goto err; |
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195 |
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nname = EC_curve_nid2nist(nid); |
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if (nname) { |
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if (!BIO_indent(bp, off, 128)) |
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goto err; |
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if (BIO_printf(bp, "NIST CURVE: %s\n", nname) <= 0) |
200 |
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goto err; |
201 |
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} |
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} else { |
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/* explicit parameters */ |
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int is_char_two = 0; |
205 |
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point_conversion_form_t form; |
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int tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(x)); |
207 |
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208 |
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if (tmp_nid == NID_X9_62_characteristic_two_field) |
209 |
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is_char_two = 1; |
210 |
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211 |
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if ((p = BN_new()) == NULL || (a = BN_new()) == NULL || |
212 |
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(b = BN_new()) == NULL || (order = BN_new()) == NULL || |
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(cofactor = BN_new()) == NULL) { |
214 |
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reason = ERR_R_MALLOC_FAILURE; |
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goto err; |
216 |
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} |
217 |
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#ifndef OPENSSL_NO_EC2M |
218 |
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if (is_char_two) { |
219 |
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if (!EC_GROUP_get_curve_GF2m(x, p, a, b, ctx)) { |
220 |
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reason = ERR_R_EC_LIB; |
221 |
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goto err; |
222 |
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} |
223 |
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} else /* prime field */ |
224 |
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#endif |
225 |
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{ |
226 |
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if (!EC_GROUP_get_curve_GFp(x, p, a, b, ctx)) { |
227 |
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reason = ERR_R_EC_LIB; |
228 |
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goto err; |
229 |
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} |
230 |
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} |
231 |
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232 |
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if ((point = EC_GROUP_get0_generator(x)) == NULL) { |
233 |
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reason = ERR_R_EC_LIB; |
234 |
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goto err; |
235 |
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} |
236 |
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if (!EC_GROUP_get_order(x, order, NULL) || |
237 |
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!EC_GROUP_get_cofactor(x, cofactor, NULL)) { |
238 |
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reason = ERR_R_EC_LIB; |
239 |
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goto err; |
240 |
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} |
241 |
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form = EC_GROUP_get_point_conversion_form(x); |
242 |
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243 |
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if ((gen = EC_POINT_point2bn(x, point, |
244 |
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form, NULL, ctx)) == NULL) { |
245 |
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reason = ERR_R_EC_LIB; |
246 |
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goto err; |
247 |
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} |
248 |
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buf_len = (size_t) BN_num_bytes(p); |
249 |
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if (buf_len < (i = (size_t) BN_num_bytes(a))) |
250 |
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buf_len = i; |
251 |
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if (buf_len < (i = (size_t) BN_num_bytes(b))) |
252 |
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buf_len = i; |
253 |
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if (buf_len < (i = (size_t) BN_num_bytes(gen))) |
254 |
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buf_len = i; |
255 |
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if (buf_len < (i = (size_t) BN_num_bytes(order))) |
256 |
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buf_len = i; |
257 |
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if (buf_len < (i = (size_t) BN_num_bytes(cofactor))) |
258 |
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buf_len = i; |
259 |
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260 |
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if ((seed = EC_GROUP_get0_seed(x)) != NULL) |
261 |
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seed_len = EC_GROUP_get_seed_len(x); |
262 |
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|
263 |
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buf_len += 10; |
264 |
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if ((buffer = malloc(buf_len)) == NULL) { |
265 |
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reason = ERR_R_MALLOC_FAILURE; |
266 |
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goto err; |
267 |
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} |
268 |
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if (!BIO_indent(bp, off, 128)) |
269 |
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goto err; |
270 |
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|
271 |
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/* print the 'short name' of the field type */ |
272 |
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if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(tmp_nid)) |
273 |
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<= 0) |
274 |
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goto err; |
275 |
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|
276 |
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if (is_char_two) { |
277 |
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/* print the 'short name' of the base type OID */ |
278 |
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int basis_type = EC_GROUP_get_basis_type(x); |
279 |
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if (basis_type == 0) |
280 |
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goto err; |
281 |
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|
282 |
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if (!BIO_indent(bp, off, 128)) |
283 |
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goto err; |
284 |
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|
285 |
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if (BIO_printf(bp, "Basis Type: %s\n", |
286 |
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OBJ_nid2sn(basis_type)) <= 0) |
287 |
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goto err; |
288 |
|
|
|
289 |
|
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/* print the polynomial */ |
290 |
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if ((p != NULL) && !ASN1_bn_print(bp, "Polynomial:", p, buffer, |
291 |
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off)) |
292 |
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goto err; |
293 |
|
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} else { |
294 |
|
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if ((p != NULL) && !ASN1_bn_print(bp, "Prime:", p, buffer, off)) |
295 |
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goto err; |
296 |
|
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} |
297 |
|
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if ((a != NULL) && !ASN1_bn_print(bp, "A: ", a, buffer, off)) |
298 |
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|
goto err; |
299 |
|
|
if ((b != NULL) && !ASN1_bn_print(bp, "B: ", b, buffer, off)) |
300 |
|
|
goto err; |
301 |
|
|
if (form == POINT_CONVERSION_COMPRESSED) { |
302 |
|
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if ((gen != NULL) && !ASN1_bn_print(bp, gen_compressed, gen, |
303 |
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buffer, off)) |
304 |
|
|
goto err; |
305 |
|
|
} else if (form == POINT_CONVERSION_UNCOMPRESSED) { |
306 |
|
|
if ((gen != NULL) && !ASN1_bn_print(bp, gen_uncompressed, gen, |
307 |
|
|
buffer, off)) |
308 |
|
|
goto err; |
309 |
|
|
} else { /* form == POINT_CONVERSION_HYBRID */ |
310 |
|
|
if ((gen != NULL) && !ASN1_bn_print(bp, gen_hybrid, gen, |
311 |
|
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buffer, off)) |
312 |
|
|
goto err; |
313 |
|
|
} |
314 |
|
|
if ((order != NULL) && !ASN1_bn_print(bp, "Order: ", order, |
315 |
|
|
buffer, off)) |
316 |
|
|
goto err; |
317 |
|
|
if ((cofactor != NULL) && !ASN1_bn_print(bp, "Cofactor: ", cofactor, |
318 |
|
|
buffer, off)) |
319 |
|
|
goto err; |
320 |
|
|
if (seed && !print_bin(bp, "Seed:", seed, seed_len, off)) |
321 |
|
|
goto err; |
322 |
|
|
} |
323 |
|
|
ret = 1; |
324 |
|
|
err: |
325 |
|
|
if (!ret) |
326 |
|
|
ECerr(EC_F_ECPKPARAMETERS_PRINT, reason); |
327 |
|
|
BN_free(p); |
328 |
|
|
BN_free(a); |
329 |
|
|
BN_free(b); |
330 |
|
|
BN_free(gen); |
331 |
|
|
BN_free(order); |
332 |
|
|
BN_free(cofactor); |
333 |
|
|
BN_CTX_free(ctx); |
334 |
|
|
free(buffer); |
335 |
|
|
return (ret); |
336 |
|
|
} |
337 |
|
|
|
338 |
|
|
static int |
339 |
|
|
print_bin(BIO * fp, const char *name, const unsigned char *buf, |
340 |
|
|
size_t len, int off) |
341 |
|
|
{ |
342 |
|
|
size_t i; |
343 |
|
|
char str[128]; |
344 |
|
|
|
345 |
|
|
if (buf == NULL) |
346 |
|
|
return 1; |
347 |
|
|
if (off) { |
348 |
|
|
if (off > 128) |
349 |
|
|
off = 128; |
350 |
|
|
memset(str, ' ', off); |
351 |
|
|
if (BIO_write(fp, str, off) <= 0) |
352 |
|
|
return 0; |
353 |
|
|
} |
354 |
|
|
if (BIO_printf(fp, "%s", name) <= 0) |
355 |
|
|
return 0; |
356 |
|
|
|
357 |
|
|
for (i = 0; i < len; i++) { |
358 |
|
|
if ((i % 15) == 0) { |
359 |
|
|
str[0] = '\n'; |
360 |
|
|
memset(&(str[1]), ' ', off + 4); |
361 |
|
|
if (BIO_write(fp, str, off + 1 + 4) <= 0) |
362 |
|
|
return 0; |
363 |
|
|
} |
364 |
|
|
if (BIO_printf(fp, "%02x%s", buf[i], ((i + 1) == len) ? "" : ":") <= 0) |
365 |
|
|
return 0; |
366 |
|
|
} |
367 |
|
|
if (BIO_write(fp, "\n", 1) <= 0) |
368 |
|
|
return 0; |
369 |
|
|
|
370 |
|
|
return 1; |
371 |
|
|
} |