请高人指教：如何将一个.cer文件读入，然后用CertCreateCertificateContext函数生成

[huchengyu]

请问一下如何将一个.cer文件读入，然后用CertCreateCertificateContext函数生成CERT_CONTEXT，用vc实现。多谢了。（CryptoAPI)

[bjgxjob]

直接读二进制文件，指定为X509_ASN_ENCODING。

[jingrunx]

BIO* bio;
BUF_MEM* bm;
PCCERT_CONTEXT pCertContext;

if(NULL == ListView->Selected) return;

item_data = static_cast<ListItemData*>(ListView->Selected->Data);
if(NULL == item_data->x509_) return;

bio = BIO_new(BIO_s_mem());
i2d_X509_bio(bio, item_data->x509_);
BIO_get_mem_ptr(bio, &bm);

pCertContext = ::CertCreateCertificateContext(X509_ASN_ENCODING
, bm->data, bm->length);
::CryptUIDlgViewContext(CERT_STORE_CERTIFICATE_CONTEXT
, pCertContext, Application->MainForm->Handle, NULL, 0, NULL);

::CertFreeCertificateContext(pCertContext);

BIO_free(bio);