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git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/asn1/i2d_dsap.c
1 /* crypto/asn1/i2d_dsap.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.]
62 #include <openssl/bn.h>
63 #include <openssl/asn1_mac.h>
64 #include <openssl/dsa.h>
66 int i2d_DSAparams(DSA
*a
, unsigned char **pp
)
70 unsigned int j
,i
,tot
=0,len
,max
=0;
74 if (a
== NULL
) return(0);
81 if (num
[i
] == NULL
) continue;
82 j
=BN_num_bits(num
[i
]);
83 len
=((j
== 0)?0:((j
/8)+1));
84 if (len
> max
) max
=len
;
85 len
=ASN1_object_size(0,len
,
86 (num
[i
]->neg
)?V_ASN1_NEG_INTEGER
:V_ASN1_INTEGER
);
90 t
=ASN1_object_size(1,tot
,V_ASN1_SEQUENCE
);
91 if (pp
== NULL
) return(t
);
94 ASN1_put_object(&p
,1,tot
,V_ASN1_SEQUENCE
,V_ASN1_UNIVERSAL
);
96 bs
.type
=V_ASN1_INTEGER
;
97 bs
.data
=(unsigned char *)OPENSSL_malloc(max
+4);
100 ASN1err(ASN1_F_I2D_DSAPARAMS
,ERR_R_MALLOC_FAILURE
);
106 if (num
[i
] == NULL
) continue;
107 bs
.length
=BN_bn2bin(num
[i
],bs
.data
);
108 i2d_ASN1_INTEGER(&bs
,&p
);
110 OPENSSL_free(bs
.data
);