1 /* crypto/ec/eck_prn.c */
3 * Written by Nils Larsch for the OpenSSL project.
5 /* ====================================================================
6 * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * openssl-core@openssl.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
58 /* ====================================================================
59 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
60 * Portions originally developed by SUN MICROSYSTEMS, INC., and
61 * contributed to the OpenSSL project.
66 #include <openssl/evp.h>
67 #include <openssl/ec.h>
68 #include <openssl/bn.h>
70 #ifndef OPENSSL_NO_FP_API
71 int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off)
76 if ((b=BIO_new(BIO_s_file())) == NULL)
78 ECerr(EC_F_ECPKPARAMETERS_PRINT_FP,ERR_R_BUF_LIB);
81 BIO_set_fp(b, fp, BIO_NOCLOSE);
82 ret = ECPKParameters_print(b, x, off);
87 int EC_KEY_print_fp(FILE *fp, const EC_KEY *x, int off)
92 if ((b=BIO_new(BIO_s_file())) == NULL)
94 ECerr(EC_F_EC_KEY_PRINT_FP, ERR_R_BIO_LIB);
97 BIO_set_fp(b, fp, BIO_NOCLOSE);
98 ret = EC_KEY_print(b, x, off);
103 int ECParameters_print_fp(FILE *fp, const EC_KEY *x)
108 if ((b=BIO_new(BIO_s_file())) == NULL)
110 ECerr(EC_F_ECPARAMETERS_PRINT_FP, ERR_R_BIO_LIB);
113 BIO_set_fp(b, fp, BIO_NOCLOSE);
114 ret = ECParameters_print(b, x);
120 int EC_KEY_print(BIO *bp, const EC_KEY *x, int off)
125 if (!pk || !EVP_PKEY_set1_EC_KEY(pk, (EC_KEY *)x))
127 ret = EVP_PKEY_print_private(bp, pk, off, NULL);
132 int ECParameters_print(BIO *bp, const EC_KEY *x)
137 if (!pk || !EVP_PKEY_set1_EC_KEY(pk, (EC_KEY *)x))
139 ret = EVP_PKEY_print_params(bp, pk, 4, NULL);
144 static int print_bin(BIO *fp, const char *str, const unsigned char *num,
145 size_t len, int off);
147 int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off)
149 unsigned char *buffer=NULL;
151 int ret=0, reason=ERR_R_BIO_LIB;
153 const EC_POINT *point=NULL;
154 BIGNUM *p=NULL, *a=NULL, *b=NULL, *gen=NULL,
155 *order=NULL, *cofactor=NULL;
156 const unsigned char *seed;
159 static const char *gen_compressed = "Generator (compressed):";
160 static const char *gen_uncompressed = "Generator (uncompressed):";
161 static const char *gen_hybrid = "Generator (hybrid):";
165 reason = ERR_R_PASSED_NULL_PARAMETER;
172 reason = ERR_R_MALLOC_FAILURE;
176 if (EC_GROUP_get_asn1_flag(x))
178 /* the curve parameter are given by an asn1 OID */
181 if (!BIO_indent(bp, off, 128))
184 nid = EC_GROUP_get_curve_name(x);
188 if (BIO_printf(bp, "ASN1 OID: %s", OBJ_nid2sn(nid)) <= 0)
190 if (BIO_printf(bp, "\n") <= 0)
195 /* explicit parameters */
197 point_conversion_form_t form;
198 int tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(x));
200 if (tmp_nid == NID_X9_62_characteristic_two_field)
203 if ((p = BN_new()) == NULL || (a = BN_new()) == NULL ||
204 (b = BN_new()) == NULL || (order = BN_new()) == NULL ||
205 (cofactor = BN_new()) == NULL)
207 reason = ERR_R_MALLOC_FAILURE;
210 #ifndef OPENSSL_NO_EC2M
213 if (!EC_GROUP_get_curve_GF2m(x, p, a, b, ctx))
215 reason = ERR_R_EC_LIB;
219 else /* prime field */
222 if (!EC_GROUP_get_curve_GFp(x, p, a, b, ctx))
224 reason = ERR_R_EC_LIB;
229 if ((point = EC_GROUP_get0_generator(x)) == NULL)
231 reason = ERR_R_EC_LIB;
234 if (!EC_GROUP_get_order(x, order, NULL) ||
235 !EC_GROUP_get_cofactor(x, cofactor, NULL))
237 reason = ERR_R_EC_LIB;
241 form = EC_GROUP_get_point_conversion_form(x);
243 if ((gen = EC_POINT_point2bn(x, point,
244 form, NULL, ctx)) == NULL)
246 reason = ERR_R_EC_LIB;
250 buf_len = (size_t)BN_num_bytes(p);
251 if (buf_len < (i = (size_t)BN_num_bytes(a)))
253 if (buf_len < (i = (size_t)BN_num_bytes(b)))
255 if (buf_len < (i = (size_t)BN_num_bytes(gen)))
257 if (buf_len < (i = (size_t)BN_num_bytes(order)))
259 if (buf_len < (i = (size_t)BN_num_bytes(cofactor)))
262 if ((seed = EC_GROUP_get0_seed(x)) != NULL)
263 seed_len = EC_GROUP_get_seed_len(x);
266 if ((buffer = OPENSSL_malloc(buf_len)) == NULL)
268 reason = ERR_R_MALLOC_FAILURE;
272 if (!BIO_indent(bp, off, 128))
275 /* print the 'short name' of the field type */
276 if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(tmp_nid))
282 /* print the 'short name' of the base type OID */
283 int basis_type = EC_GROUP_get_basis_type(x);
287 if (!BIO_indent(bp, off, 128))
290 if (BIO_printf(bp, "Basis Type: %s\n",
291 OBJ_nid2sn(basis_type)) <= 0)
294 /* print the polynomial */
295 if ((p != NULL) && !ASN1_bn_print(bp, "Polynomial:", p, buffer,
301 if ((p != NULL) && !ASN1_bn_print(bp, "Prime:", p, buffer,off))
304 if ((a != NULL) && !ASN1_bn_print(bp, "A: ", a, buffer, off))
306 if ((b != NULL) && !ASN1_bn_print(bp, "B: ", b, buffer, off))
308 if (form == POINT_CONVERSION_COMPRESSED)
310 if ((gen != NULL) && !ASN1_bn_print(bp, gen_compressed, gen,
314 else if (form == POINT_CONVERSION_UNCOMPRESSED)
316 if ((gen != NULL) && !ASN1_bn_print(bp, gen_uncompressed, gen,
320 else /* form == POINT_CONVERSION_HYBRID */
322 if ((gen != NULL) && !ASN1_bn_print(bp, gen_hybrid, gen,
326 if ((order != NULL) && !ASN1_bn_print(bp, "Order: ", order,
327 buffer, off)) goto err;
328 if ((cofactor != NULL) && !ASN1_bn_print(bp, "Cofactor: ", cofactor,
329 buffer, off)) goto err;
330 if (seed && !print_bin(bp, "Seed:", seed, seed_len, off))
336 ECerr(EC_F_ECPKPARAMETERS_PRINT, reason);
352 OPENSSL_free(buffer);
356 static int print_bin(BIO *fp, const char *name, const unsigned char *buf,
369 if (BIO_write(fp, str, off) <= 0)
373 if (BIO_printf(fp,"%s", name) <= 0)
376 for (i=0; i<len; i++)
381 memset(&(str[1]),' ',off+4);
382 if (BIO_write(fp, str, off+1+4) <= 0)
385 if (BIO_printf(fp,"%02x%s",buf[i],((i+1) == len)?"":":") <= 0)
388 if (BIO_write(fp,"\n",1) <= 0)