1 /* crypto/x509/v3_x509.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.]
69 static int i2a_key_usage(BIO *bp, X509 *x);
70 static int a2i_key_usage(X509 *x, char *str, int len);
73 int X509v3_get_key_usage(X509 *x);
74 int X509v3_set_key_usage(X509 *x,unsigned int use);
75 int i2a_X509v3_key_usage(BIO *bp, unsigned int use);
76 unsigned int a2i_X509v3_key_usage(char *p);
78 #define STD_X509_EXT_NUM 9
81 static X509_OBJECTS std_x509_ext[STD_X509_EXT_NUM]={
82 {NID_subject_key_identifier, NULL,NULL},
83 {NID_key_usage, a2i_key_usage,i2a_key_usage}, /**/
84 {NID_private_key_usage_period, NULL,NULL},
85 {NID_subject_alt_name, NULL,NULL},
86 {NID_issuer_alt_name, NULL,NULL},
87 {NID_basic_constraints, NULL,NULL},
88 {NID_crl_number, NULL,NULL},
89 {NID_certificate_policies, NULL,NULL},
90 {NID_authority_key_identifier, NULL,NULL},
94 int X509v3_add_standard_extensions()
98 for (i=0; i<STD_X509_EXT_NUM; i++)
99 if (!X509v3_add_extension(&(std_x509_ext[i])))
105 int X509v3_get_key_usage(x)
113 i=X509_get_ext_by_NID(x,NID_key_usage,-1);
114 if (i < 0) return(X509v3_KU_UNDEF);
115 ext=X509_get_ext(x,i);
116 st=X509v3_unpack_string(NULL,V_ASN1_BIT_STRING,
117 X509_EXTENSION_get_data(X509_get_ext(x,i)));
119 p=(char *)ASN1_STRING_data(st);
120 if (ASN1_STRING_length(st) == 1)
122 else if (ASN1_STRING_length(st) == 2)
133 } key_usage_data[] ={
134 {"digitalSignature", X509v3_KU_DIGITAL_SIGNATURE},
135 {"nonRepudiation", X509v3_KU_NON_REPUDIATION},
136 {"keyEncipherment", X509v3_KU_KEY_ENCIPHERMENT},
137 {"dataEncipherment", X509v3_KU_DATA_ENCIPHERMENT},
138 {"keyAgreement", X509v3_KU_KEY_AGREEMENT},
139 {"keyCertSign", X509v3_KU_KEY_CERT_SIGN},
140 {"cRLSign", X509v3_KU_CRL_SIGN},
141 {"encipherOnly", X509v3_KU_ENCIPHER_ONLY},
142 {"decipherOnly", X509v3_KU_DECIPHER_ONLY},
147 static int a2i_key_usage(x,str,len)
152 return(X509v3_set_key_usage(x,a2i_X509v3_key_usage(str)));
155 static int i2a_key_usage(bp,x)
159 return(i2a_X509v3_key_usage(bp,X509v3_get_key_usage(x)));
163 int i2a_X509v3_key_usage(bp,use)
171 if (use | key_usage_data[i].value)
173 BIO_printf(bp,"%s%s",((first)?"":" "),
174 key_usage_data[i].name);
182 unsigned int a2i_X509v3_key_usage(p)
192 while ((*q != '\0') && isalnum(*q))
194 if (*q == '\0') break;
202 if (strncmp(key_usage_data[i].name,s,n) == 0)
204 ret|=key_usage_data[i].value;
208 if (key_usage_data[i].name == NULL)
209 return(X509v3_KU_UNDEF);
215 int X509v3_set_key_usage(x,use)
219 ASN1_OCTET_STRING *os;
222 unsigned char data[4];
224 i=X509_get_ext_by_NID(x,NID_key_usage,-1);
227 i=X509_get_ext_count(x)+1;
228 if ((ext=X509_EXTENSION_new()) == NULL) return(0);
229 if (!X509_add_ext(x,ext,i))
231 X509_EXTENSION_free(ext);
236 ext=X509_get_ext(x,i);
239 os=X509_EXTENSION_get_data(ext);
250 data[1]=(use>>8)&0xff;
252 return((X509v3_pack_string(&os,V_ASN1_BIT_STRING,data,i) == NULL)?0:1);