QT C++使用OpenSSL生成jwk

在QT C++中使用OpenSSL生成jwk，可以参考以下步骤：

1. 首先，需要安装OpenSSL库。可以在官网上下载对应的安装包进行安装。

2. 在QT C++项目中添加OpenSSL库的头文件和库文件。在.pro文件中添加以下代码：

INCLUDEPATH += /usr/local/ssl/include
LIBS += -L/usr/local/ssl/lib -lssl -lcrypto

3. 编写生成jwk的代码。可以参考以下代码：

#include <openssl/rsa.h>
#include <openssl/pem.h>
#include <openssl/evp.h>
#include <openssl/bio.h>
#include <openssl/err.h>
#include <QJsonObject>

QJsonObject generateJWK(int keySize)
{
    QJsonObject jwk;

    // 生成RSA密钥对
    RSA* rsa = RSA_generate_key(keySize, RSA_F4, NULL, NULL);

    // 将RSA密钥对转换为PEM格式
    BIO* bio = BIO_new(BIO_s_mem());
    PEM_write_bio_RSAPrivateKey(bio, rsa, NULL, NULL, 0, NULL, NULL);
    size_t privateKeyLen = BIO_pending(bio);
    char* privateKey = new char[privateKeyLen + 1];
    BIO_read(bio, privateKey, privateKeyLen);
    privateKey[privateKeyLen] = '\0';

    BIO* pubkeyBio = BIO_new(BIO_s_mem());
    PEM_write_bio_RSA_PUBKEY(pubkeyBio, rsa);
    size_t publicKeyLen = BIO_pending(pubkeyBio);
    char* publicKey = new char[publicKeyLen + 1];
    BIO_read(pubkeyBio, publicKey, publicKeyLen);
    publicKey[publicKeyLen] = '\0';

    jwk.insert("kty", "RSA");
    jwk.insert("n", QByteArray(reinterpret_cast<const char*>(rsa->n->data), rsa->n->length).toBase64(QByteArray::Base64UrlEncoding | QByteArray::OmitTrailingEquals));
    jwk.insert("e", QByteArray(reinterpret_cast<const char*>(rsa->e->data), rsa->e->length).toBase64(QByteArray::Base64UrlEncoding | QByteArray::OmitTrailingEquals));
    jwk.insert("d", QByteArray(reinterpret_cast<const char*>(rsa->d->data), rsa->d->length).toBase64(QByteArray::Base64UrlEncoding | QByteArray::OmitTrailingEquals));
    jwk.insert("p", QByteArray(reinterpret_cast<const char*>(rsa->p->data), rsa->p->length).toBase64(QByteArray::Base64UrlEncoding | QByteArray::OmitTrailingEquals));
    jwk.insert("q", QByteArray(reinterpret_cast<const char*>(rsa->q->data), rsa->q->length).toBase64(QByteArray::Base64UrlEncoding | QByteArray::OmitTrailingEquals));
    jwk.insert("dp", QByteArray(reinterpret_cast<const char*>(rsa->dmp1->data), rsa->dmp1->length).toBase64(QByteArray::Base64UrlEncoding | QByteArray::OmitTrailingEquals));
    jwk.insert("dq", QByteArray(reinterpret_cast<const char*>(rsa->dmq1->data), rsa->dmq1->length).toBase64(QByteArray::Base64UrlEncoding | QByteArray::OmitTrailingEquals));
    jwk.insert("qi", QByteArray(reinterpret_cast<const char*>(rsa->iqmp->data), rsa->iqmp->length).toBase64(QByteArray::Base64UrlEncoding | QByteArray::OmitTrailingEquals));
    jwk.insert("privateKey", privateKey);
    jwk.insert("publicKey", publicKey);

    // 释放RSA密钥对和BIO
    RSA_free(rsa);
    BIO_free_all(bio);
    BIO_free_all(pubkeyBio);

    return jwk;
}

4. 调用生成jwk的函数，并将生成的jwk保存到文件中：

QJsonObject jwk = generateJWK(2048);
QFile file("jwk.json");
if (file.open(QIODevice::WriteOnly)) {
    QJsonDocument doc(jwk);
    QByteArray data = doc.toJson(QJsonDocument::Indented);
    file.write(data);
    file.close();
}

以上就是使用OpenSSL在QT C++中生成jwk的步骤。