]>
Commit | Line | Data |
---|---|---|
d02b48c6 | 1 | /* crypto/asn1/d2i_s_pu.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
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. | |
8 | * | |
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). | |
15 | * | |
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. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
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)" | |
40 | * | |
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 | |
51 | * SUCH DAMAGE. | |
52 | * | |
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.] | |
57 | */ | |
58 | ||
f5d7a031 | 59 | /* Original version from Steven Schoch <schoch@sheba.arc.nasa.gov> */ |
d02b48c6 | 60 | |
f5d7a031 | 61 | #ifndef NO_DSA |
d02b48c6 RE |
62 | #include <stdio.h> |
63 | #include "cryptlib.h" | |
ec577822 BM |
64 | #include <openssl/bn.h> |
65 | #include <openssl/dsa.h> | |
66 | #include <openssl/objects.h> | |
67 | #include <openssl/asn1_mac.h> | |
d02b48c6 | 68 | |
284ef5f3 | 69 | #ifndef NO_NEG_PUBKEY_BUG |
1ad2ecb6 DSH |
70 | #define d2i_ASN1_INTEGER d2i_ASN1_UINTEGER |
71 | #endif | |
72 | ||
a4aba800 | 73 | DSA *d2i_DSAPublicKey(DSA **a, const unsigned char **pp, long length) |
d02b48c6 RE |
74 | { |
75 | int i=ASN1_R_PARSING; | |
76 | ASN1_INTEGER *bs=NULL; | |
77 | M_ASN1_D2I_vars(a,DSA *,DSA_new); | |
78 | ||
79 | M_ASN1_D2I_Init(); | |
80 | if ((length != 0) && ((M_ASN1_next & (~V_ASN1_CONSTRUCTED)) | |
81 | == (V_ASN1_UNIVERSAL|(V_ASN1_INTEGER)))) | |
82 | { | |
83 | c.slen=length; | |
84 | M_ASN1_D2I_get(bs,d2i_ASN1_INTEGER); | |
85 | if ((ret->pub_key=BN_bin2bn(bs->data,bs->length,ret->pub_key)) | |
86 | == NULL) | |
87 | goto err_bn; | |
88 | ret->write_params=0; | |
89 | } | |
90 | else | |
91 | { | |
92 | M_ASN1_D2I_start_sequence(); | |
93 | M_ASN1_D2I_get(bs,d2i_ASN1_INTEGER); | |
94 | if ((ret->pub_key=BN_bin2bn(bs->data,bs->length,ret->pub_key)) | |
95 | == NULL) | |
96 | goto err_bn; | |
97 | M_ASN1_D2I_get(bs,d2i_ASN1_INTEGER); | |
98 | if ((ret->p=BN_bin2bn(bs->data,bs->length,ret->p)) == NULL) | |
99 | goto err_bn; | |
100 | M_ASN1_D2I_get(bs,d2i_ASN1_INTEGER); | |
101 | if ((ret->q=BN_bin2bn(bs->data,bs->length,ret->q)) == NULL) | |
102 | goto err_bn; | |
103 | M_ASN1_D2I_get(bs,d2i_ASN1_INTEGER); | |
104 | if ((ret->g=BN_bin2bn(bs->data,bs->length,ret->g)) == NULL) | |
105 | goto err_bn; | |
106 | ||
107 | ret->write_params=1; | |
108 | } | |
109 | ||
08e9c1af | 110 | M_ASN1_INTEGER_free(bs); |
d02b48c6 RE |
111 | bs=NULL; |
112 | M_ASN1_D2I_Finish_2(a); | |
113 | err_bn: | |
114 | i=ERR_R_BN_LIB; | |
115 | err: | |
116 | ASN1err(ASN1_F_D2I_DSAPUBLICKEY,i); | |
117 | if ((ret != NULL) && ((a == NULL) || (*a != ret))) DSA_free(ret); | |
08e9c1af | 118 | if (bs != NULL) M_ASN1_INTEGER_free(bs); |
d02b48c6 RE |
119 | return(NULL); |
120 | } | |
f5d7a031 | 121 | #endif |