【发布时间】：2015-02-20 09:25:31
【问题描述】：
我在服务器中有一个证书链：
Certificate chain
0 s:/******/O=Foobar International BV/OU****
i:/C=US/O=Symantec Corporation/OU=Symantec Trust Network/****
1 s:/C=US/O=Symantec Corporation/OU=Symantec Trust Network/****
i:/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=**** - G5
2 s:/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=**** - G5
i:/C=US/O=VeriSign, Inc./OU=Class 3 Public Primary Certification Authority
而我的本地根 CA 证书是：
s:/C=US/O=Symantec Corporation/OU=Symantec Trust Network/****
i:/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=**** - G5
我正在使用这个 sn-p 来验证证书：
//gcc -lssl -lcrypto -o certverify certverify.c
#include <openssl/ssl.h>
#include <openssl/asn1.h>
#include <openssl/bio.h>
#include <openssl/x509.h>
#include <openssl/x509_vfy.h>
#include <openssl/pem.h>
#include <openssl/x509v3.h>
#include <openssl/err.h>
#include <openssl/conf.h>
#include <string.h>
int main() {
const char ca_bundlestr[] = "./ca-bundle.pem";
const char cert_filestr[] = "./cert-file.pem";
BIO *certbio = NULL;
BIO *outbio = NULL;
X509 *error_cert = NULL;
X509 *cert = NULL;
X509_NAME *certsubject = NULL;
X509_STORE *store = NULL;
X509_STORE_CTX *vrfy_ctx = NULL;
int ret;
/* ---------------------------------------------------------- *
* These function calls initialize openssl for correct work. *
* ---------------------------------------------------------- */
OpenSSL_add_all_algorithms();
ERR_load_BIO_strings();
ERR_load_crypto_strings();
/* ---------------------------------------------------------- *
* Create the Input/Output BIO's. *
* ---------------------------------------------------------- */
certbio = BIO_new(BIO_s_file());
outbio = BIO_new_fp(stdout, BIO_NOCLOSE);
/* ---------------------------------------------------------- *
* Initialize the global certificate validation store object. *
* ---------------------------------------------------------- */
if (!(store=X509_STORE_new()))
BIO_printf(outbio, "Error creating X509_STORE_CTX object\n");
/* ---------------------------------------------------------- *
* Create the context structure for the validation operation. *
* ---------------------------------------------------------- */
vrfy_ctx = X509_STORE_CTX_new();
/* ---------------------------------------------------------- *
* Load the certificate and cacert chain from file (PEM). *
* ---------------------------------------------------------- */
ret = BIO_read_filename(certbio, cert_filestr);
if (! (cert = PEM_read_bio_X509(certbio, NULL, 0, NULL))) {
BIO_printf(outbio, "Error loading cert into memory\n");
exit(-1);
}
ret = X509_STORE_load_locations(store, ca_bundlestr, NULL);
if (ret != 1)
BIO_printf(outbio, "Error loading CA cert or chain file\n");
/* ---------------------------------------------------------- *
* Initialize the ctx structure for a verification operation: *
* Set the trusted cert store, the unvalidated cert, and any *
* potential certs that could be needed (here we set it NULL) *
* ---------------------------------------------------------- */
X509_STORE_CTX_init(vrfy_ctx, store, cert, NULL);
/* ---------------------------------------------------------- *
* Check the complete cert chain can be build and validated. *
* Returns 1 on success, 0 on verification failures, and -1 *
* for trouble with the ctx object (i.e. missing certificate) *
* ---------------------------------------------------------- */
ret = X509_verify_cert(vrfy_ctx);
BIO_printf(outbio, "Verification return code: %d\n", ret);
if(ret == 0 || ret == 1)
BIO_printf(outbio, "Verification result text: %s\n",
X509_verify_cert_error_string(vrfy_ctx->error));
/* ---------------------------------------------------------- *
* The error handling below shows how to get failure details *
* from the offending certificate. *
* ---------------------------------------------------------- */
if(ret == 0) {
/* get the offending certificate causing the failure */
error_cert = X509_STORE_CTX_get_current_cert(vrfy_ctx);
certsubject = X509_NAME_new();
certsubject = X509_get_subject_name(error_cert);
BIO_printf(outbio, "Verification failed cert:\n");
X509_NAME_print_ex(outbio, certsubject, 0, XN_FLAG_MULTILINE);
BIO_printf(outbio, "\n");
}
/* ---------------------------------------------------------- *
* Free up all structures *
* ---------------------------------------------------------- */
X509_STORE_CTX_free(vrfy_ctx);
X509_STORE_free(store);
X509_free(cert);
BIO_free_all(certbio);
BIO_free_all(outbio);
exit(0);
}
但此代码返回以下输出：
Verification return code: 0
Verification result text: unable to get issuer certificate
Verification failed cert:
countryName = US
organizationName = Symantec Corporation
organizationalUnitName = Symantec Trust Network
commonName = Symantec Class 3 Secure Server CA - G4
这里有什么问题？
【问题讨论】：
标签： ssl openssl ssl-certificate x509 ca