1 /* crypto/ec/eck_prn.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
60 * Binary polynomial ECC support in OpenSSL originally developed by
61 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
66 #include <openssl/evp.h>
67 #include <openssl/ec.h>
69 #ifndef OPENSSL_NO_FP_API
70 int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off)
75 if ((b=BIO_new(BIO_s_file())) == NULL)
77 ECerr(EC_F_ECPKPARAMETERS_PRINT_FP,ERR_R_BUF_LIB);
80 BIO_set_fp(b, fp, BIO_NOCLOSE);
81 ret = ECPKParameters_print(b, x, off);
86 int EC_KEY_print_fp(FILE *fp, const EC_KEY *x, int off)
91 if ((b=BIO_new(BIO_s_file())) == NULL)
93 ECerr(EC_F_EC_KEY_PRINT_FP, ERR_R_BIO_LIB);
96 BIO_set_fp(b, fp, BIO_NOCLOSE);
97 ret = EC_KEY_print(b, x, off);
102 int ECParameters_print_fp(FILE *fp, const EC_KEY *x)
107 if ((b=BIO_new(BIO_s_file())) == NULL)
109 ECerr(EC_F_ECPARAMETERS_PRINT_FP, ERR_R_BIO_LIB);
112 BIO_set_fp(b, fp, BIO_NOCLOSE);
113 ret = ECParameters_print(b, x);
119 int EC_KEY_print(BIO *bp, const EC_KEY *x, int off)
124 if (!pk || !EVP_PKEY_set1_EC_KEY(pk, (EC_KEY *)x))
126 ret = EVP_PKEY_print_private(bp, pk, off, NULL);
131 int ECParameters_print(BIO *bp, const EC_KEY *x)
136 if (!pk || !EVP_PKEY_set1_EC_KEY(pk, (EC_KEY *)x))
138 ret = EVP_PKEY_print_params(bp, pk, 4, NULL);
143 static int print_bin(BIO *fp, const char *str, const unsigned char *num,
144 size_t len, int off);
146 int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off)
148 unsigned char *buffer=NULL;
150 int ret=0, reason=ERR_R_BIO_LIB;
152 const EC_POINT *point=NULL;
153 BIGNUM *p=NULL, *a=NULL, *b=NULL, *gen=NULL,
154 *order=NULL, *cofactor=NULL;
155 const unsigned char *seed;
158 static const char *gen_compressed = "Generator (compressed):";
159 static const char *gen_uncompressed = "Generator (uncompressed):";
160 static const char *gen_hybrid = "Generator (hybrid):";
164 reason = ERR_R_PASSED_NULL_PARAMETER;
171 reason = ERR_R_MALLOC_FAILURE;
175 if (EC_GROUP_get_asn1_flag(x))
177 /* the curve parameter are given by an asn1 OID */
180 if (!BIO_indent(bp, off, 128))
183 nid = EC_GROUP_get_curve_name(x);
187 if (BIO_printf(bp, "ASN1 OID: %s", OBJ_nid2sn(nid)) <= 0)
189 if (BIO_printf(bp, "\n") <= 0)
194 /* explicit parameters */
196 point_conversion_form_t form;
197 int tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(x));
199 if (tmp_nid == NID_X9_62_characteristic_two_field)
202 if ((p = BN_new()) == NULL || (a = BN_new()) == NULL ||
203 (b = BN_new()) == NULL || (order = BN_new()) == NULL ||
204 (cofactor = BN_new()) == NULL)
206 reason = ERR_R_MALLOC_FAILURE;
212 if (!EC_GROUP_get_curve_GF2m(x, p, a, b, ctx))
214 reason = ERR_R_EC_LIB;
218 else /* prime field */
220 if (!EC_GROUP_get_curve_GFp(x, p, a, b, ctx))
222 reason = ERR_R_EC_LIB;
227 if ((point = EC_GROUP_get0_generator(x)) == NULL)
229 reason = ERR_R_EC_LIB;
232 if (!EC_GROUP_get_order(x, order, NULL) ||
233 !EC_GROUP_get_cofactor(x, cofactor, NULL))
235 reason = ERR_R_EC_LIB;
239 form = EC_GROUP_get_point_conversion_form(x);
241 if ((gen = EC_POINT_point2bn(x, point,
242 form, NULL, ctx)) == NULL)
244 reason = ERR_R_EC_LIB;
248 buf_len = (size_t)BN_num_bytes(p);
249 if (buf_len < (i = (size_t)BN_num_bytes(a)))
251 if (buf_len < (i = (size_t)BN_num_bytes(b)))
253 if (buf_len < (i = (size_t)BN_num_bytes(gen)))
255 if (buf_len < (i = (size_t)BN_num_bytes(order)))
257 if (buf_len < (i = (size_t)BN_num_bytes(cofactor)))
260 if ((seed = EC_GROUP_get0_seed(x)) != NULL)
261 seed_len = EC_GROUP_get_seed_len(x);
264 if ((buffer = OPENSSL_malloc(buf_len)) == NULL)
266 reason = ERR_R_MALLOC_FAILURE;
270 if (!BIO_indent(bp, off, 128))
273 /* print the 'short name' of the field type */
274 if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(tmp_nid))
280 /* print the 'short name' of the base type OID */
281 int basis_type = EC_GROUP_get_basis_type(x);
285 if (!BIO_indent(bp, off, 128))
288 if (BIO_printf(bp, "Basis Type: %s\n",
289 OBJ_nid2sn(basis_type)) <= 0)
292 /* print the polynomial */
293 if ((p != NULL) && !ASN1_bn_print(bp, "Polynomial:", p, buffer,
299 if ((p != NULL) && !ASN1_bn_print(bp, "Prime:", p, buffer,off))
302 if ((a != NULL) && !ASN1_bn_print(bp, "A: ", a, buffer, off))
304 if ((b != NULL) && !ASN1_bn_print(bp, "B: ", b, buffer, off))
306 if (form == POINT_CONVERSION_COMPRESSED)
308 if ((gen != NULL) && !ASN1_bn_print(bp, gen_compressed, gen,
312 else if (form == POINT_CONVERSION_UNCOMPRESSED)
314 if ((gen != NULL) && !ASN1_bn_print(bp, gen_uncompressed, gen,
318 else /* form == POINT_CONVERSION_HYBRID */
320 if ((gen != NULL) && !ASN1_bn_print(bp, gen_hybrid, gen,
324 if ((order != NULL) && !ASN1_bn_print(bp, "Order: ", order,
325 buffer, off)) goto err;
326 if ((cofactor != NULL) && !ASN1_bn_print(bp, "Cofactor: ", cofactor,
327 buffer, off)) goto err;
328 if (seed && !print_bin(bp, "Seed:", seed, seed_len, off))
334 ECerr(EC_F_ECPKPARAMETERS_PRINT, reason);
350 OPENSSL_free(buffer);
354 static int print_bin(BIO *fp, const char *name, const unsigned char *buf,
367 if (BIO_write(fp, str, off) <= 0)
371 if (BIO_printf(fp,"%s", name) <= 0)
374 for (i=0; i<len; i++)
379 memset(&(str[1]),' ',off+4);
380 if (BIO_write(fp, str, off+1+4) <= 0)
383 if (BIO_printf(fp,"%02x%s",buf[i],((i+1) == len)?"":":") <= 0)
386 if (BIO_write(fp,"\n",1) <= 0)