1 /* crypto/asn1/a_enum.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.]
61 #include <openssl/asn1.h>
62 #include <openssl/bn.h>
65 * Code for ENUMERATED type: identical to INTEGER apart from a different tag.
66 * for comments on encoding see a_int.c
69 int ASN1_ENUMERATED_set(ASN1_ENUMERATED
*a
, long v
)
73 unsigned char buf
[sizeof(long)+1];
76 a
->type
=V_ASN1_ENUMERATED
;
77 if (a
->length
< (int)(sizeof(long)+1))
80 OPENSSL_free(a
->data
);
81 if ((a
->data
=(unsigned char *)OPENSSL_malloc(sizeof(long)+1)) != NULL
)
82 memset((char *)a
->data
,0,sizeof(long)+1);
86 ASN1err(ASN1_F_ASN1_ENUMERATED_SET
,ERR_R_MALLOC_FAILURE
);
93 a
->type
=V_ASN1_NEG_ENUMERATED
;
96 for (i
=0; i
<sizeof(long); i
++)
103 for (k
=i
-1; k
>=0; k
--)
109 long ASN1_ENUMERATED_get(ASN1_ENUMERATED
*a
)
114 if (a
== NULL
) return(0L);
116 if (i
== V_ASN1_NEG_ENUMERATED
)
118 else if (i
!= V_ASN1_ENUMERATED
)
121 if (a
->length
> (int)sizeof(long))
123 /* hmm... a bit ugly */
129 for (i
=0; i
<a
->length
; i
++)
132 r
|=(unsigned char)a
->data
[i
];
138 ASN1_ENUMERATED
*BN_to_ASN1_ENUMERATED(BIGNUM
*bn
, ASN1_ENUMERATED
*ai
)
140 ASN1_ENUMERATED
*ret
;
144 ret
=M_ASN1_ENUMERATED_new();
149 ASN1err(ASN1_F_BN_TO_ASN1_ENUMERATED
,ERR_R_NESTED_ASN1_ERROR
);
152 if(BN_is_negative(bn
)) ret
->type
= V_ASN1_NEG_ENUMERATED
;
153 else ret
->type
=V_ASN1_ENUMERATED
;
155 len
=((j
== 0)?0:((j
/8)+1));
156 if (ret
->length
< len
+4)
158 unsigned char *new_data
=OPENSSL_realloc(ret
->data
, len
+4);
161 ASN1err(ASN1_F_BN_TO_ASN1_ENUMERATED
,ERR_R_MALLOC_FAILURE
);
167 ret
->length
=BN_bn2bin(bn
,ret
->data
);
170 if (ret
!= ai
) M_ASN1_ENUMERATED_free(ret
);
174 BIGNUM
*ASN1_ENUMERATED_to_BN(ASN1_ENUMERATED
*ai
, BIGNUM
*bn
)
178 if ((ret
=BN_bin2bn(ai
->data
,ai
->length
,bn
)) == NULL
)
179 ASN1err(ASN1_F_ASN1_ENUMERATED_TO_BN
,ASN1_R_BN_LIB
);
180 else if(ai
->type
== V_ASN1_NEG_ENUMERATED
) BN_set_negative(ret
,1);