1 /* crypto/pkcs7/verify.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.]
60 #include <openssl/bio.h>
61 #include <openssl/x509.h>
62 #include <openssl/pem.h>
63 #include <openssl/err.h>
64 #include <openssl/asn1.h>
66 int verify_callback(int ok, X509_STORE_CTX *ctx);
79 PKCS7_SIGNER_INFO *si;
80 X509_STORE_CTX cert_ctx;
81 X509_STORE *cert_store=NULL;
82 BIO *data,*detached=NULL,*p7bio=NULL;
86 STACK_OF(PKCS7_SIGNER_INFO) *sk;
88 SSLeay_add_all_algorithms();
89 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
91 data=BIO_new(BIO_s_file());
97 if (strcmp(argv[0],"-p") == 0)
101 else if ((strcmp(argv[0],"-k") == 0) && (argc >= 2)) {
105 } else if ((strcmp(argv[0],"-d") == 0) && (argc >= 2))
107 detached=BIO_new(BIO_s_file());
108 if (!BIO_read_filename(detached,argv[1]))
116 if (!BIO_read_filename(data,argv[0])) goto err;
119 fprintf(stderr, "No private key file specified\n");
123 if ((in=BIO_new_file(keyfile,"r")) == NULL) goto err;
124 if ((x509=PEM_read_bio_X509(in,NULL,NULL,NULL)) == NULL) goto err;
126 if ((pkey=PEM_read_bio_PrivateKey(in,NULL,NULL,NULL)) == NULL)
131 BIO_set_fp(data,stdin,BIO_NOCLOSE);
134 /* Load the PKCS7 object from a file */
135 if ((p7=PEM_read_bio_PKCS7(data,NULL,NULL,NULL)) == NULL) goto err;
139 /* This stuff is being setup for certificate verification.
140 * When using SSL, it could be replaced with a
141 * cert_stre=SSL_CTX_get_cert_store(ssl_ctx); */
142 cert_store=X509_STORE_new();
143 X509_STORE_set_default_paths(cert_store);
144 X509_STORE_load_locations(cert_store,NULL,"../../certs");
145 X509_STORE_set_verify_cb_func(cert_store,verify_callback);
149 /* We need to process the data */
150 /* We cannot support detached encryption */
151 p7bio=PKCS7_dataDecode(p7,pkey,detached,x509);
155 printf("problems decoding\n");
159 /* We now have to 'read' from p7bio to calculate digests etc. */
162 i=BIO_read(p7bio,buf,sizeof(buf));
165 fwrite(buf,1, i, stdout);
168 /* We can now verify signatures */
169 sk=PKCS7_get_signer_info(p7);
172 fprintf(stderr, "there are no signatures on this data\n");
176 /* Ok, first we need to, for each subject entry,
177 * see if we can verify */
179 for (i=0; i<sk_PKCS7_SIGNER_INFO_num(sk); i++)
181 si=sk_PKCS7_SIGNER_INFO_value(sk,i);
182 i=PKCS7_dataVerify(cert_store,&cert_ctx,p7bio,p7,si);
186 fprintf(stderr,"Signature verified\n");
189 X509_STORE_free(cert_store);
193 ERR_load_crypto_strings();
194 ERR_print_errors_fp(stderr);
198 /* should be X509 * but we can just have them as char *. */
199 int verify_callback(int ok, X509_STORE_CTX *ctx)
205 err_cert=X509_STORE_CTX_get_current_cert(ctx);
206 err= X509_STORE_CTX_get_error(ctx);
207 depth= X509_STORE_CTX_get_error_depth(ctx);
209 X509_NAME_oneline(X509_get_subject_name(err_cert),buf,256);
210 BIO_printf(bio_err,"depth=%d %s\n",depth,buf);
213 BIO_printf(bio_err,"verify error:num=%d:%s\n",err,
214 X509_verify_cert_error_string(err));
218 X509_STORE_CTX_set_error(ctx,X509_V_OK);
223 X509_STORE_CTX_set_error(ctx,X509_V_ERR_CERT_CHAIN_TOO_LONG);
228 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
229 X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert),buf,256);
230 BIO_printf(bio_err,"issuer= %s\n",buf);
232 case X509_V_ERR_CERT_NOT_YET_VALID:
233 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
234 BIO_printf(bio_err,"notBefore=");
235 ASN1_UTCTIME_print(bio_err,X509_get_notBefore(ctx->current_cert));
236 BIO_printf(bio_err,"\n");
238 case X509_V_ERR_CERT_HAS_EXPIRED:
239 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
240 BIO_printf(bio_err,"notAfter=");
241 ASN1_UTCTIME_print(bio_err,X509_get_notAfter(ctx->current_cert));
242 BIO_printf(bio_err,"\n");
245 BIO_printf(bio_err,"verify return:%d\n",ok);