diff options
Diffstat (limited to 'openssl/crypto/pkcs7/verify.c')
| -rw-r--r-- | openssl/crypto/pkcs7/verify.c | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/openssl/crypto/pkcs7/verify.c b/openssl/crypto/pkcs7/verify.c new file mode 100644 index 0000000..b40f260 --- /dev/null +++ b/openssl/crypto/pkcs7/verify.c @@ -0,0 +1,263 @@ +/* crypto/pkcs7/verify.c */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ +#include <stdio.h> +#include <string.h> +#include <openssl/bio.h> +#include <openssl/asn1.h> +#include <openssl/x509.h> +#include <openssl/pem.h> +#include <openssl/err.h> +#include "example.h" + +int verify_callback(int ok, X509_STORE_CTX *ctx); + +BIO *bio_err=NULL; +BIO *bio_out=NULL; + +int main(argc,argv) +int argc; +char *argv[]; + { + PKCS7 *p7; + PKCS7_SIGNER_INFO *si; + X509_STORE_CTX cert_ctx; + X509_STORE *cert_store=NULL; + BIO *data,*detached=NULL,*p7bio=NULL; + char buf[1024*4]; + char *pp; + int i,printit=0; + STACK_OF(PKCS7_SIGNER_INFO) *sk; + + bio_err=BIO_new_fp(stderr,BIO_NOCLOSE); + bio_out=BIO_new_fp(stdout,BIO_NOCLOSE); +#ifndef OPENSSL_NO_MD2 + EVP_add_digest(EVP_md2()); +#endif +#ifndef OPENSSL_NO_MD5 + EVP_add_digest(EVP_md5()); +#endif +#ifndef OPENSSL_NO_SHA1 + EVP_add_digest(EVP_sha1()); +#endif +#ifndef OPENSSL_NO_MDC2 + EVP_add_digest(EVP_mdc2()); +#endif + + data=BIO_new(BIO_s_file()); + + pp=NULL; + while (argc > 1) + { + argc--; + argv++; + if (strcmp(argv[0],"-p") == 0) + { + printit=1; + } + else if ((strcmp(argv[0],"-d") == 0) && (argc >= 2)) + { + detached=BIO_new(BIO_s_file()); + if (!BIO_read_filename(detached,argv[1])) + goto err; + argc--; + argv++; + } + else + { + pp=argv[0]; + if (!BIO_read_filename(data,argv[0])) + goto err; + } + } + + if (pp == NULL) + BIO_set_fp(data,stdin,BIO_NOCLOSE); + + + /* Load the PKCS7 object from a file */ + if ((p7=PEM_read_bio_PKCS7(data,NULL,NULL,NULL)) == NULL) goto err; + + /* This stuff is being setup for certificate verification. + * When using SSL, it could be replaced with a + * cert_stre=SSL_CTX_get_cert_store(ssl_ctx); */ + cert_store=X509_STORE_new(); + X509_STORE_set_default_paths(cert_store); + X509_STORE_load_locations(cert_store,NULL,"../../certs"); + X509_STORE_set_verify_cb_func(cert_store,verify_callback); + + ERR_clear_error(); + + /* We need to process the data */ + if ((PKCS7_get_detached(p7) || detached)) + { + if (detached == NULL) + { + printf("no data to verify the signature on\n"); + exit(1); + } + else + p7bio=PKCS7_dataInit(p7,detached); + } + else + { + p7bio=PKCS7_dataInit(p7,NULL); + } + + /* We now have to 'read' from p7bio to calculate digests etc. */ + for (;;) + { + i=BIO_read(p7bio,buf,sizeof(buf)); + /* print it? */ + if (i <= 0) break; + } + + /* We can now verify signatures */ + sk=PKCS7_get_signer_info(p7); + if (sk == NULL) + { + printf("there are no signatures on this data\n"); + exit(1); + } + + /* Ok, first we need to, for each subject entry, see if we can verify */ + for (i=0; i<sk_PKCS7_SIGNER_INFO_num(sk); i++) + { + ASN1_UTCTIME *tm; + char *str1,*str2; + int rc; + + si=sk_PKCS7_SIGNER_INFO_value(sk,i); + rc=PKCS7_dataVerify(cert_store,&cert_ctx,p7bio,p7,si); + if (rc <= 0) + goto err; + printf("signer info\n"); + if ((tm=get_signed_time(si)) != NULL) + { + BIO_printf(bio_out,"Signed time:"); + ASN1_UTCTIME_print(bio_out,tm); + ASN1_UTCTIME_free(tm); + BIO_printf(bio_out,"\n"); + } + if (get_signed_seq2string(si,&str1,&str2)) + { + BIO_printf(bio_out,"String 1 is %s\n",str1); + BIO_printf(bio_out,"String 2 is %s\n",str2); + } + + } + + X509_STORE_free(cert_store); + + printf("done\n"); + exit(0); +err: + ERR_load_crypto_strings(); + ERR_print_errors_fp(stderr); + exit(1); + } + +/* should be X509 * but we can just have them as char *. */ +int verify_callback(int ok, X509_STORE_CTX *ctx) + { + char buf[256]; + X509 *err_cert; + int err,depth; + + err_cert=X509_STORE_CTX_get_current_cert(ctx); + err= X509_STORE_CTX_get_error(ctx); + depth= X509_STORE_CTX_get_error_depth(ctx); + + X509_NAME_oneline(X509_get_subject_name(err_cert),buf,256); + BIO_printf(bio_err,"depth=%d %s\n",depth,buf); + if (!ok) + { + BIO_printf(bio_err,"verify error:num=%d:%s\n",err, + X509_verify_cert_error_string(err)); + if (depth < 6) + { + ok=1; + X509_STORE_CTX_set_error(ctx,X509_V_OK); + } + else + { + ok=0; + X509_STORE_CTX_set_error(ctx,X509_V_ERR_CERT_CHAIN_TOO_LONG); + } + } + switch (ctx->error) + { + case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: + X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert),buf,256); + BIO_printf(bio_err,"issuer= %s\n",buf); + break; + case X509_V_ERR_CERT_NOT_YET_VALID: + case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: + BIO_printf(bio_err,"notBefore="); + ASN1_UTCTIME_print(bio_err,X509_get_notBefore(ctx->current_cert)); + BIO_printf(bio_err,"\n"); + break; + case X509_V_ERR_CERT_HAS_EXPIRED: + case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: + BIO_printf(bio_err,"notAfter="); + ASN1_UTCTIME_print(bio_err,X509_get_notAfter(ctx->current_cert)); + BIO_printf(bio_err,"\n"); + break; + } + BIO_printf(bio_err,"verify return:%d\n",ok); + return(ok); + } |