1 /* crypto/asn1/x_pubkey.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.]
64 * ASN1err(ASN1_F_D2I_X509_PUBKEY,ERR_R_ASN1_LENGTH_MISMATCH);
65 * ASN1err(ASN1_F_X509_PUBKEY_NEW,ERR_R_ASN1_LENGTH_MISMATCH);
68 int i2d_X509_PUBKEY(X509_PUBKEY
*a
, unsigned char **pp
)
72 M_ASN1_I2D_len(a
->algor
, i2d_X509_ALGOR
);
73 M_ASN1_I2D_len(a
->public_key
, i2d_ASN1_BIT_STRING
);
75 M_ASN1_I2D_seq_total();
77 M_ASN1_I2D_put(a
->algor
, i2d_X509_ALGOR
);
78 M_ASN1_I2D_put(a
->public_key
, i2d_ASN1_BIT_STRING
);
83 X509_PUBKEY
*d2i_X509_PUBKEY(X509_PUBKEY
**a
, unsigned char **pp
,
86 M_ASN1_D2I_vars(a
,X509_PUBKEY
*,X509_PUBKEY_new
);
89 M_ASN1_D2I_start_sequence();
90 M_ASN1_D2I_get(ret
->algor
,d2i_X509_ALGOR
);
91 M_ASN1_D2I_get(ret
->public_key
,d2i_ASN1_BIT_STRING
);
92 if (ret
->pkey
!= NULL
)
94 EVP_PKEY_free(ret
->pkey
);
97 M_ASN1_D2I_Finish(a
,X509_PUBKEY_free
,ASN1_F_D2I_X509_PUBKEY
);
100 X509_PUBKEY
*X509_PUBKEY_new(void)
102 X509_PUBKEY
*ret
=NULL
;
105 M_ASN1_New_Malloc(ret
,X509_PUBKEY
);
106 M_ASN1_New(ret
->algor
,X509_ALGOR_new
);
107 M_ASN1_New(ret
->public_key
,ASN1_BIT_STRING_new
);
110 M_ASN1_New_Error(ASN1_F_X509_PUBKEY_NEW
);
113 void X509_PUBKEY_free(X509_PUBKEY
*a
)
115 if (a
== NULL
) return;
116 X509_ALGOR_free(a
->algor
);
117 ASN1_BIT_STRING_free(a
->public_key
);
118 if (a
->pkey
!= NULL
) EVP_PKEY_free(a
->pkey
);
122 int X509_PUBKEY_set(X509_PUBKEY
**x
, EVP_PKEY
*pkey
)
131 if (x
== NULL
) return(0);
133 if ((pk
=X509_PUBKEY_new()) == NULL
) goto err
;
136 /* set the algorithm id */
137 if ((o
=OBJ_nid2obj(pkey
->type
)) == NULL
) goto err
;
138 ASN1_OBJECT_free(a
->algorithm
);
141 /* Set the parameter list */
142 if (!pkey
->save_parameters
|| (pkey
->type
== EVP_PKEY_RSA
))
144 if ((a
->parameter
== NULL
) ||
145 (a
->parameter
->type
!= V_ASN1_NULL
))
147 ASN1_TYPE_free(a
->parameter
);
148 a
->parameter
=ASN1_TYPE_new();
149 a
->parameter
->type
=V_ASN1_NULL
;
154 if (pkey
->type
== EVP_PKEY_DSA
)
161 ASN1_TYPE_free(a
->parameter
);
162 i
=i2d_DSAparams(dsa
,NULL
);
163 p
=(unsigned char *)Malloc(i
);
165 i2d_DSAparams(dsa
,&pp
);
166 a
->parameter
=ASN1_TYPE_new();
167 a
->parameter
->type
=V_ASN1_SEQUENCE
;
168 a
->parameter
->value
.sequence
=ASN1_STRING_new();
169 ASN1_STRING_set(a
->parameter
->value
.sequence
,p
,i
);
175 X509err(X509_F_X509_PUBKEY_SET
,X509_R_UNSUPPORTED_ALGORITHM
);
179 if ((i
=i2d_PublicKey(pkey
,NULL
)) <= 0) goto err
;
180 if ((s
=(unsigned char *)Malloc(i
+1)) == NULL
) goto err
;
182 i2d_PublicKey(pkey
,&p
);
183 if (!ASN1_BIT_STRING_set(pk
->public_key
,s
,i
)) goto err
;
184 /* Set number of unused bits to zero */
185 pk
->public_key
->flags
&= ~(ASN1_STRING_FLAG_BITS_LEFT
|0x07);
186 pk
->public_key
->flags
|=ASN1_STRING_FLAG_BITS_LEFT
;
190 CRYPTO_add(&pkey
->references
,1,CRYPTO_LOCK_EVP_PKEY
);
194 X509_PUBKEY_free(*x
);
201 if (pk
!= NULL
) X509_PUBKEY_free(pk
);
205 EVP_PKEY
*X509_PUBKEY_get(X509_PUBKEY
*key
)
215 if (key
== NULL
) goto err
;
217 if (key
->pkey
!= NULL
)
219 CRYPTO_add(&key
->pkey
->references
,1,CRYPTO_LOCK_EVP_PKEY
);
223 if (key
->public_key
== NULL
) goto err
;
225 type
=OBJ_obj2nid(key
->algor
->algorithm
);
226 p
=key
->public_key
->data
;
227 j
=key
->public_key
->length
;
228 if ((ret
=d2i_PublicKey(type
,NULL
,&p
,(long)j
)) == NULL
)
230 X509err(X509_F_X509_PUBKEY_GET
,X509_R_ERR_ASN1_LIB
);
233 ret
->save_parameters
=0;
237 if (ret
->type
== EVP_PKEY_DSA
)
239 if (a
->parameter
->type
== V_ASN1_SEQUENCE
)
241 ret
->pkey
.dsa
->write_params
=0;
242 p
=a
->parameter
->value
.sequence
->data
;
243 j
=a
->parameter
->value
.sequence
->length
;
244 if (!d2i_DSAparams(&ret
->pkey
.dsa
,&p
,(long)j
))
247 ret
->save_parameters
=1;
251 CRYPTO_add(&ret
->references
,1,CRYPTO_LOCK_EVP_PKEY
);