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/* crypto/pkcs7/verify.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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#include <openssl/bio.h>
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#include <openssl/x509.h>
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#include <openssl/pem.h>
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#include <openssl/err.h>
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#include <openssl/asn1.h>
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int verify_callback(int ok, X509_STORE_CTX *ctx);
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PKCS7_SIGNER_INFO *si;
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X509_STORE_CTX cert_ctx;
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X509_STORE *cert_store=NULL;
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BIO *data,*detached=NULL,*p7bio=NULL;
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STACK_OF(PKCS7_SIGNER_INFO) *sk;
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OpenSSL_add_all_algorithms();
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bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
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data=BIO_new(BIO_s_file());
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if (strcmp(argv[0],"-p") == 0)
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else if ((strcmp(argv[0],"-k") == 0) && (argc >= 2)) {
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} else if ((strcmp(argv[0],"-d") == 0) && (argc >= 2))
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detached=BIO_new(BIO_s_file());
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if (!BIO_read_filename(detached,argv[1]))
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if (!BIO_read_filename(data,argv[0])) goto err;
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fprintf(stderr, "No private key file specified\n");
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if ((in=BIO_new_file(keyfile,"r")) == NULL) goto err;
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if ((x509=PEM_read_bio_X509(in,NULL,NULL,NULL)) == NULL) goto err;
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if ((pkey=PEM_read_bio_PrivateKey(in,NULL,NULL,NULL)) == NULL)
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BIO_set_fp(data,stdin,BIO_NOCLOSE);
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/* Load the PKCS7 object from a file */
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if ((p7=PEM_read_bio_PKCS7(data,NULL,NULL,NULL)) == NULL) goto err;
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/* This stuff is being setup for certificate verification.
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* When using SSL, it could be replaced with a
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* cert_stre=SSL_CTX_get_cert_store(ssl_ctx); */
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cert_store=X509_STORE_new();
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X509_STORE_set_default_paths(cert_store);
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X509_STORE_load_locations(cert_store,NULL,"../../certs");
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X509_STORE_set_verify_cb_func(cert_store,verify_callback);
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/* We need to process the data */
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/* We cannot support detached encryption */
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p7bio=PKCS7_dataDecode(p7,pkey,detached,x509);
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printf("problems decoding\n");
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/* We now have to 'read' from p7bio to calculate digests etc. */
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i=BIO_read(p7bio,buf,sizeof(buf));
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fwrite(buf,1, i, stdout);
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/* We can now verify signatures */
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sk=PKCS7_get_signer_info(p7);
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fprintf(stderr, "there are no signatures on this data\n");
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/* Ok, first we need to, for each subject entry,
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* see if we can verify */
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for (i=0; i<sk_PKCS7_SIGNER_INFO_num(sk); i++)
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si=sk_PKCS7_SIGNER_INFO_value(sk,i);
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i=PKCS7_dataVerify(cert_store,&cert_ctx,p7bio,p7,si);
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fprintf(stderr,"Signature verified\n");
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X509_STORE_free(cert_store);
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ERR_load_crypto_strings();
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ERR_print_errors_fp(stderr);
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/* should be X509 * but we can just have them as char *. */
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int verify_callback(int ok, X509_STORE_CTX *ctx)
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err_cert=X509_STORE_CTX_get_current_cert(ctx);
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err= X509_STORE_CTX_get_error(ctx);
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depth= X509_STORE_CTX_get_error_depth(ctx);
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X509_NAME_oneline(X509_get_subject_name(err_cert),buf,256);
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BIO_printf(bio_err,"depth=%d %s\n",depth,buf);
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BIO_printf(bio_err,"verify error:num=%d:%s\n",err,
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X509_verify_cert_error_string(err));
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X509_STORE_CTX_set_error(ctx,X509_V_OK);
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X509_STORE_CTX_set_error(ctx,X509_V_ERR_CERT_CHAIN_TOO_LONG);
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case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
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X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert),buf,256);
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BIO_printf(bio_err,"issuer= %s\n",buf);
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case X509_V_ERR_CERT_NOT_YET_VALID:
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case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
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BIO_printf(bio_err,"notBefore=");
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ASN1_UTCTIME_print(bio_err,X509_get_notBefore(ctx->current_cert));
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BIO_printf(bio_err,"\n");
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case X509_V_ERR_CERT_HAS_EXPIRED:
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case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
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BIO_printf(bio_err,"notAfter=");
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ASN1_UTCTIME_print(bio_err,X509_get_notAfter(ctx->current_cert));
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BIO_printf(bio_err,"\n");
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BIO_printf(bio_err,"verify return:%d\n",ok);