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sm2cert.cpp
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sm2cert.cpp
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#include "sm2cert.h"
#include "ui_sm2cert.h"
Sm2Cert::Sm2Cert(QWidget *parent)
: QWidget(parent)
, ui(new Ui::Sm2Cert)
{
ui->setupUi(this);
}
Sm2Cert::~Sm2Cert()
{
delete ui;
}
std::shared_ptr<X509> Sm2Cert::genCert(int type,
std::shared_ptr<X509> midCA,
std::shared_ptr<EVP_PKEY> midcaPkey,
QString CNname,
QString days)
{
/* 生成用户密钥 */
std::shared_ptr<EVP_PKEY> userKey(EVP_PKEY_Q_keygen(NULL, NULL, "SM2"), EVP_PKEY_free);
if (userKey.get() == NULL) {
/* 错误处理 */
getError();
exit(0);
}
/* 输出用户私钥 */
std::shared_ptr<BIO> out(BIO_new(BIO_s_mem()), BIO_free);
PEM_write_bio_PrivateKey(out.get(), userKey.get(), NULL, 0, NULL, NULL, NULL);
int len = BIO_pending(out.get());
char buf[1024] = {};
BIO_read(out.get(), buf, len);
if (type == 0) {
this->ui->textBrowserEncryKey->setText(QString(buf));
} else {
this->ui->textBrowserSignKey->setText(QString(buf));
}
/* 生成CSR */
std::shared_ptr<X509_REQ> userReq(X509_REQ_new(), X509_REQ_free);
/* CSR相关设置 */
X509_REQ_set_pubkey(userReq.get(), userKey.get());
std::shared_ptr<X509_NAME> userCAname(X509_NAME_new(), X509_NAME_free);
X509_NAME_add_entry_by_txt(userCAname.get(),
"CN",
MBSTRING_ASC,
(unsigned char *) CNname.toStdString().c_str(),
-1,
-1,
0);
X509_REQ_set_subject_name(userReq.get(), userCAname.get());
X509_REQ_set_version(userReq.get(), X509_VERSION_3);
X509_REQ_sign(userReq.get(), userKey.get(), EVP_sm3());
X509_REQ_verify(userReq.get(), userKey.get());
/* 签发证书 */
std::shared_ptr<X509> userCer(X509_new(), X509_free);
/* 证书相关设置 */
std::string str;
if (type == 0) {
str = "Key Encipherment, Data Encipherment";
} else {
str = "Digital Signature";
}
std::shared_ptr<X509_EXTENSION>
cert_ex(X509V3_EXT_conf_nid(NULL, NULL, NID_key_usage, str.c_str()), X509_EXTENSION_free);
X509_add_ext(userCer.get(), cert_ex.get(), -1);
X509_set_version(userCer.get(), X509_VERSION_3);
X509_set_pubkey(userCer.get(), userKey.get());
std::shared_ptr<ASN1_INTEGER> aserial(ASN1_INTEGER_new(), ASN1_INTEGER_free);
ASN1_INTEGER_set(aserial.get(), 0);
X509_set_serialNumber(userCer.get(), aserial.get());
X509_set_subject_name(userCer.get(), userCAname.get());
const X509_NAME *rootCAname = X509_get_subject_name(midCA.get());
X509_set_issuer_name(userCer.get(), rootCAname);
time_t curTime = time(NULL);
std::shared_ptr<ASN1_TIME> rootBeforeTime(ASN1_TIME_new(), ASN1_TIME_free);
ASN1_TIME_set(rootBeforeTime.get(), curTime);
X509_set_notBefore(userCer.get(), rootBeforeTime.get());
std::shared_ptr<ASN1_TIME>
rootAfterTime(ASN1_TIME_adj(NULL, curTime, 0, days.toInt() * 60 * 60 * 24), ASN1_TIME_free);
X509_set_notAfter(userCer.get(), rootAfterTime.get());
/* 使用中间CA私钥签发 */
X509_sign(userCer.get(), midcaPkey.get(), EVP_sm3());
return userCer;
}
void Sm2Cert::on_pushButtonGen_clicked()
{
/* 获取用户输入的通用名称 */
QString CN = this->ui->lineEditCN->text();
if (CN.isEmpty()) {
QMessageBox::warning(NULL,
"warning",
QString("请输入通用名称！"),
QMessageBox::Close,
QMessageBox::Close);
return;
}
/* 获取用户输入的有效期 */
QString days = this->ui->lineEditDays->text();
if (days.isEmpty()) {
QMessageBox::warning(NULL,
"warning",
QString("请输入有效期！"),
QMessageBox::Close,
QMessageBox::Close);
return;
}
/* 读取中间CA证书 */
QFile fsubca(":/certs/subca.pem");
if (!fsubca.open(QIODevice::ReadOnly | QIODevice::Text)) {
QMessageBox::warning(NULL,
"warning",
QString("subca.pem打开失败！"),
QMessageBox::Close,
QMessageBox::Close);
return;
}
QTextStream subcaInput(&fsubca);
QString subcaQstr = subcaInput.readAll();
std::shared_ptr<BIO> subcaOut(BIO_new(BIO_s_mem()), BIO_free);
BIO_write(subcaOut.get(), subcaQstr.toStdString().c_str(), subcaQstr.size());
std::shared_ptr<X509> subca(PEM_read_bio_X509(subcaOut.get(), NULL, NULL, NULL), X509_free);
fsubca.close();
/* 读取中间CA私钥 */
QFile fpkey(":/certs/subca_pkey.pem");
if (!fpkey.open(QIODevice::ReadOnly | QIODevice::Text)) {
QMessageBox::warning(NULL,
"warning",
QString("subca_pkey.pem打开失败！"),
QMessageBox::Close,
QMessageBox::Close);
return;
}
QTextStream pkeyInput(&fpkey);
QString pkeyQstr = pkeyInput.readAll();
std::shared_ptr<BIO> pkeyOut(BIO_new(BIO_s_mem()), BIO_free);
BIO_write(pkeyOut.get(), pkeyQstr.toStdString().c_str(), pkeyQstr.size());
std::shared_ptr<EVP_PKEY> pkey(PEM_read_bio_PrivateKey(pkeyOut.get(), NULL, NULL, NULL),
EVP_PKEY_free);
fpkey.close();
/* 生成用户签名证书 */
std::shared_ptr<X509> userSignCer = this->genCert(1, subca, pkey, CN, days);
/* 生成用户加密证书 */
std::shared_ptr<X509> userEncryptCer = this->genCert(0, subca, pkey, CN, days);
/* 将用户证书以PEM格式输出到输出栏 */
std::shared_ptr<BIO> outSign(BIO_new(BIO_s_mem()), BIO_free);
PEM_write_bio_X509(outSign.get(), userSignCer.get());
int len = BIO_pending(outSign.get());
char buf[2048] = {};
BIO_read(outSign.get(), buf, len);
this->ui->textBrowserSignOutput->setPlainText(QString(buf));
std::shared_ptr<BIO> outEncrypt(BIO_new(BIO_s_mem()), BIO_free);
PEM_write_bio_X509(outEncrypt.get(), userEncryptCer.get());
len = BIO_pending(outEncrypt.get());
BIO_read(outEncrypt.get(), buf, len);
this->ui->textBrowserEncryptOutput->setPlainText(QString(buf));
}