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1 /* crypto/pkcs7/verify.c */ | |
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
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 #include <stdio.h> | |
59 #include <stdlib.h> | |
60 #include <string.h> | |
61 #include <openssl/bio.h> | |
62 #include <openssl/x509.h> | |
63 #include <openssl/pem.h> | |
64 #include <openssl/err.h> | |
65 #include <openssl/asn1.h> | |
66 | |
67 int verify_callback(int ok, X509_STORE_CTX *ctx); | |
68 | |
69 BIO *bio_err=NULL; | |
70 | |
71 int main(argc,argv) | |
72 int argc; | |
73 char *argv[]; | |
74 { | |
75 char *keyfile=NULL; | |
76 BIO *in; | |
77 EVP_PKEY *pkey; | |
78 X509 *x509; | |
79 PKCS7 *p7; | |
80 PKCS7_SIGNER_INFO *si; | |
81 X509_STORE_CTX cert_ctx; | |
82 X509_STORE *cert_store=NULL; | |
83 BIO *data,*detached=NULL,*p7bio=NULL; | |
84 char buf[1024*4]; | |
85 unsigned char *pp; | |
86 int i,printit=0; | |
87 STACK_OF(PKCS7_SIGNER_INFO) *sk; | |
88 | |
89 OpenSSL_add_all_algorithms(); | |
90 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE); | |
91 | |
92 data=BIO_new(BIO_s_file()); | |
93 pp=NULL; | |
94 while (argc > 1) | |
95 { | |
96 argc--; | |
97 argv++; | |
98 if (strcmp(argv[0],"-p") == 0) | |
99 { | |
100 printit=1; | |
101 } | |
102 else if ((strcmp(argv[0],"-k") == 0) && (argc >= 2)) { | |
103 keyfile = argv[1]; | |
104 argc-=1; | |
105 argv+=1; | |
106 } else if ((strcmp(argv[0],"-d") == 0) && (argc >= 2)) | |
107 { | |
108 detached=BIO_new(BIO_s_file()); | |
109 if (!BIO_read_filename(detached,argv[1])) | |
110 goto err; | |
111 argc-=1; | |
112 argv+=1; | |
113 } | |
114 else break; | |
115 } | |
116 | |
117 if (!BIO_read_filename(data,argv[0])) goto err; | |
118 | |
119 if(!keyfile) { | |
120 fprintf(stderr, "No private key file specified\n"); | |
121 goto err; | |
122 } | |
123 | |
124 if ((in=BIO_new_file(keyfile,"r")) == NULL) goto err; | |
125 if ((x509=PEM_read_bio_X509(in,NULL,NULL,NULL)) == NULL) goto err; | |
126 BIO_reset(in); | |
127 if ((pkey=PEM_read_bio_PrivateKey(in,NULL,NULL,NULL)) == NULL) | |
128 goto err; | |
129 BIO_free(in); | |
130 | |
131 if (pp == NULL) | |
132 BIO_set_fp(data,stdin,BIO_NOCLOSE); | |
133 | |
134 | |
135 /* Load the PKCS7 object from a file */ | |
136 if ((p7=PEM_read_bio_PKCS7(data,NULL,NULL,NULL)) == NULL) goto err; | |
137 | |
138 | |
139 | |
140 /* This stuff is being setup for certificate verification. | |
141 * When using SSL, it could be replaced with a | |
142 * cert_stre=SSL_CTX_get_cert_store(ssl_ctx); */ | |
143 cert_store=X509_STORE_new(); | |
144 X509_STORE_set_default_paths(cert_store); | |
145 X509_STORE_load_locations(cert_store,NULL,"../../certs"); | |
146 X509_STORE_set_verify_cb_func(cert_store,verify_callback); | |
147 | |
148 ERR_clear_error(); | |
149 | |
150 /* We need to process the data */ | |
151 /* We cannot support detached encryption */ | |
152 p7bio=PKCS7_dataDecode(p7,pkey,detached,x509); | |
153 | |
154 if (p7bio == NULL) | |
155 { | |
156 printf("problems decoding\n"); | |
157 goto err; | |
158 } | |
159 | |
160 /* We now have to 'read' from p7bio to calculate digests etc. */ | |
161 for (;;) | |
162 { | |
163 i=BIO_read(p7bio,buf,sizeof(buf)); | |
164 /* print it? */ | |
165 if (i <= 0) break; | |
166 fwrite(buf,1, i, stdout); | |
167 } | |
168 | |
169 /* We can now verify signatures */ | |
170 sk=PKCS7_get_signer_info(p7); | |
171 if (sk == NULL) | |
172 { | |
173 fprintf(stderr, "there are no signatures on this data\n"); | |
174 } | |
175 else | |
176 { | |
177 /* Ok, first we need to, for each subject entry, | |
178 * see if we can verify */ | |
179 ERR_clear_error(); | |
180 for (i=0; i<sk_PKCS7_SIGNER_INFO_num(sk); i++) | |
181 { | |
182 si=sk_PKCS7_SIGNER_INFO_value(sk,i); | |
183 i=PKCS7_dataVerify(cert_store,&cert_ctx,p7bio,p7,si); | |
184 if (i <= 0) | |
185 goto err; | |
186 else | |
187 fprintf(stderr,"Signature verified\n"); | |
188 } | |
189 } | |
190 X509_STORE_free(cert_store); | |
191 | |
192 exit(0); | |
193 err: | |
194 ERR_load_crypto_strings(); | |
195 ERR_print_errors_fp(stderr); | |
196 exit(1); | |
197 } | |
198 | |
199 /* should be X509 * but we can just have them as char *. */ | |
200 int verify_callback(int ok, X509_STORE_CTX *ctx) | |
201 { | |
202 char buf[256]; | |
203 X509 *err_cert; | |
204 int err,depth; | |
205 | |
206 err_cert=X509_STORE_CTX_get_current_cert(ctx); | |
207 err= X509_STORE_CTX_get_error(ctx); | |
208 depth= X509_STORE_CTX_get_error_depth(ctx); | |
209 | |
210 X509_NAME_oneline(X509_get_subject_name(err_cert),buf,256); | |
211 BIO_printf(bio_err,"depth=%d %s\n",depth,buf); | |
212 if (!ok) | |
213 { | |
214 BIO_printf(bio_err,"verify error:num=%d:%s\n",err, | |
215 X509_verify_cert_error_string(err)); | |
216 if (depth < 6) | |
217 { | |
218 ok=1; | |
219 X509_STORE_CTX_set_error(ctx,X509_V_OK); | |
220 } | |
221 else | |
222 { | |
223 ok=0; | |
224 X509_STORE_CTX_set_error(ctx,X509_V_ERR_CERT_CHAIN_TOO_L
ONG); | |
225 } | |
226 } | |
227 switch (ctx->error) | |
228 { | |
229 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: | |
230 X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert),buf,25
6); | |
231 BIO_printf(bio_err,"issuer= %s\n",buf); | |
232 break; | |
233 case X509_V_ERR_CERT_NOT_YET_VALID: | |
234 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: | |
235 BIO_printf(bio_err,"notBefore="); | |
236 ASN1_UTCTIME_print(bio_err,X509_get_notBefore(ctx->current_cert)
); | |
237 BIO_printf(bio_err,"\n"); | |
238 break; | |
239 case X509_V_ERR_CERT_HAS_EXPIRED: | |
240 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: | |
241 BIO_printf(bio_err,"notAfter="); | |
242 ASN1_UTCTIME_print(bio_err,X509_get_notAfter(ctx->current_cert))
; | |
243 BIO_printf(bio_err,"\n"); | |
244 break; | |
245 } | |
246 BIO_printf(bio_err,"verify return:%d\n",ok); | |
247 return(ok); | |
248 } | |
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