SecCertificateCopySubjectSummary:如何以人类可读的形式获取证书信息？

import Security

func getCertificateSubjectSummary(certificate: SecCertificate) -> String? {
    var summary: CFString?
    let status = SecCertificateCopySubjectSummary(certificate, &summary)
    
    if status == errSecSuccess {
        return summary as String?
    } else {
        return nil
    }
}

// 使用示例
let certificateData: Data = ... // 证书的二进制数据
let certificate = SecCertificateCreateWithData(nil, certificateData as CFData)

if let certificate = certificate {
    if let subjectSummary = getCertificateSubjectSummary(certificate: certificate) {
        print("证书主题信息：\(subjectSummary)")
    } else {
        print("无法获取证书主题信息")
    }
} else {
    print("无效的证书数据")
}