2 * Copyright 2006-2021 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
5 * Licensed under the Apache License 2.0 (the "License"). You may not use
6 * this file except in compliance with the License. You can obtain a copy
7 * in the file LICENSE in the source distribution or at
8 * https://www.openssl.org/source/license.html
11 #include "internal/deprecated.h"
14 #include "internal/cryptlib.h"
15 #include <openssl/evp.h>
16 #include <openssl/ec.h>
17 #include <openssl/bn.h>
19 #ifndef OPENSSL_NO_DEPRECATED_3_0
20 # ifndef OPENSSL_NO_STDIO
21 int ECPKParameters_print_fp(FILE *fp
, const EC_GROUP
*x
, int off
)
26 if ((b
= BIO_new(BIO_s_file())) == NULL
) {
27 ERR_raise(ERR_LIB_EC
, ERR_R_BUF_LIB
);
30 BIO_set_fp(b
, fp
, BIO_NOCLOSE
);
31 ret
= ECPKParameters_print(b
, x
, off
);
36 int EC_KEY_print_fp(FILE *fp
, const EC_KEY
*x
, int off
)
41 if ((b
= BIO_new(BIO_s_file())) == NULL
) {
42 ERR_raise(ERR_LIB_EC
, ERR_R_BIO_LIB
);
45 BIO_set_fp(b
, fp
, BIO_NOCLOSE
);
46 ret
= EC_KEY_print(b
, x
, off
);
51 int ECParameters_print_fp(FILE *fp
, const EC_KEY
*x
)
56 if ((b
= BIO_new(BIO_s_file())) == NULL
) {
57 ERR_raise(ERR_LIB_EC
, ERR_R_BIO_LIB
);
60 BIO_set_fp(b
, fp
, BIO_NOCLOSE
);
61 ret
= ECParameters_print(b
, x
);
65 #endif /* OPENSSL_NO_STDIO */
67 static int print_bin(BIO
*fp
, const char *str
, const unsigned char *num
,
70 int ECPKParameters_print(BIO
*bp
, const EC_GROUP
*x
, int off
)
72 int ret
= 0, reason
= ERR_R_BIO_LIB
;
74 const EC_POINT
*point
= NULL
;
75 BIGNUM
*p
= NULL
, *a
= NULL
, *b
= NULL
;
76 unsigned char *gen_buf
= NULL
;
77 const BIGNUM
*order
= NULL
, *cofactor
= NULL
;
78 const unsigned char *seed
;
79 size_t seed_len
= 0, gen_buf_len
= 0;
81 static const char *gen_compressed
= "Generator (compressed):";
82 static const char *gen_uncompressed
= "Generator (uncompressed):";
83 static const char *gen_hybrid
= "Generator (hybrid):";
86 reason
= ERR_R_PASSED_NULL_PARAMETER
;
92 reason
= ERR_R_BN_LIB
;
96 if (EC_GROUP_get_asn1_flag(x
)) {
97 /* the curve parameter are given by an asn1 OID */
101 if (!BIO_indent(bp
, off
, 128))
104 nid
= EC_GROUP_get_curve_name(x
);
107 if (BIO_printf(bp
, "ASN1 OID: %s", OBJ_nid2sn(nid
)) <= 0)
109 if (BIO_printf(bp
, "\n") <= 0)
111 nname
= EC_curve_nid2nist(nid
);
113 if (!BIO_indent(bp
, off
, 128))
115 if (BIO_printf(bp
, "NIST CURVE: %s\n", nname
) <= 0)
119 const char *form_str
;
120 /* explicit parameters */
122 point_conversion_form_t form
;
123 int tmp_nid
= EC_GROUP_get_field_type(x
);
125 if (tmp_nid
== NID_X9_62_characteristic_two_field
)
128 if ((p
= BN_new()) == NULL
|| (a
= BN_new()) == NULL
||
129 (b
= BN_new()) == NULL
) {
130 reason
= ERR_R_BN_LIB
;
134 if (!EC_GROUP_get_curve(x
, p
, a
, b
, ctx
)) {
135 reason
= ERR_R_EC_LIB
;
139 if ((point
= EC_GROUP_get0_generator(x
)) == NULL
) {
140 reason
= ERR_R_EC_LIB
;
143 order
= EC_GROUP_get0_order(x
);
144 cofactor
= EC_GROUP_get0_cofactor(x
);
146 reason
= ERR_R_EC_LIB
;
150 form
= EC_GROUP_get_point_conversion_form(x
);
152 gen_buf_len
= EC_POINT_point2buf(x
, point
, form
, &gen_buf
, ctx
);
153 if (gen_buf_len
== 0) {
154 reason
= ERR_R_EC_LIB
;
158 if ((seed
= EC_GROUP_get0_seed(x
)) != NULL
)
159 seed_len
= EC_GROUP_get_seed_len(x
);
161 if (!BIO_indent(bp
, off
, 128))
164 /* print the 'short name' of the field type */
165 if (BIO_printf(bp
, "Field Type: %s\n", OBJ_nid2sn(tmp_nid
))
170 /* print the 'short name' of the base type OID */
171 int basis_type
= EC_GROUP_get_basis_type(x
);
175 if (!BIO_indent(bp
, off
, 128))
178 if (BIO_printf(bp
, "Basis Type: %s\n",
179 OBJ_nid2sn(basis_type
)) <= 0)
182 /* print the polynomial */
183 if ((p
!= NULL
) && !ASN1_bn_print(bp
, "Polynomial:", p
, NULL
,
187 if ((p
!= NULL
) && !ASN1_bn_print(bp
, "Prime:", p
, NULL
, off
))
190 if ((a
!= NULL
) && !ASN1_bn_print(bp
, "A: ", a
, NULL
, off
))
192 if ((b
!= NULL
) && !ASN1_bn_print(bp
, "B: ", b
, NULL
, off
))
195 if (form
== POINT_CONVERSION_COMPRESSED
)
196 form_str
= gen_compressed
;
197 else if (form
== POINT_CONVERSION_UNCOMPRESSED
)
198 form_str
= gen_uncompressed
;
200 form_str
= gen_hybrid
;
202 && !print_bin(bp
, form_str
, gen_buf
, gen_buf_len
, off
))
205 if ((order
!= NULL
) && !ASN1_bn_print(bp
, "Order: ", order
, NULL
, off
))
207 if ((cofactor
!= NULL
) && !ASN1_bn_print(bp
, "Cofactor: ", cofactor
,
210 if (seed
&& !print_bin(bp
, "Seed:", seed
, seed_len
, off
))
216 ERR_raise(ERR_LIB_EC
, reason
);
220 OPENSSL_clear_free(gen_buf
, gen_buf_len
);
225 static int print_bin(BIO
*fp
, const char *name
, const unsigned char *buf
,
229 char str
[128 + 1 + 4];
236 memset(str
, ' ', off
);
237 if (BIO_write(fp
, str
, off
) <= 0)
243 if (BIO_printf(fp
, "%s", name
) <= 0)
246 for (i
= 0; i
< len
; i
++) {
249 memset(&(str
[1]), ' ', off
+ 4);
250 if (BIO_write(fp
, str
, off
+ 1 + 4) <= 0)
253 if (BIO_printf(fp
, "%02x%s", buf
[i
], ((i
+ 1) == len
) ? "" : ":") <=
257 if (BIO_write(fp
, "\n", 1) <= 0)
262 #endif /* OPENSSL_NO_DEPRECATED_3_0 */