# QSslCertificate Class Reference
## [[QtNetwork](index.htm) module]
該QSslCertificate類提供了一個X509證書了方便的API 。[More...](#details)
### Types
* `enum SubjectInfo { Organization, CommonName, LocalityName, OrganizationalUnitName, CountryName, StateOrProvinceName }`
### Methods
* `__init__ (self, QIODevice?device, QSsl.EncodingFormat?format?=?QSsl.Pem)`
* `__init__ (self, QByteArray?data?=?QByteArray(), QSsl.EncodingFormat?format?=?QSsl.Pem)`
* `__init__ (self, QSslCertificate?other)`
* `dict-of-QSsl.AlternateNameEntryType-list-of-QString alternateSubjectNames (self)`
* `clear (self)`
* `QByteArray digest (self, QCryptographicHash.Algorithm?algorithm?=?QCryptographicHash.Md5)`
* `QDateTime effectiveDate (self)`
* `QDateTime expiryDate (self)`
* `int handle (self)`
* `bool isNull (self)`
* `QString issuerInfo (self, SubjectInfo?info)`
* `QString issuerInfo (self, QByteArray?tag)`
* `bool isValid (self)`
* `QSslKey publicKey (self)`
* `QByteArray serialNumber (self)`
* `QString subjectInfo (self, SubjectInfo?info)`
* `QString subjectInfo (self, QByteArray?tag)`
* `QByteArray toDer (self)`
* `QByteArray toPem (self)`
* `QByteArray version (self)`
### Static Methods
* `list-of-QSslCertificate fromData (QByteArray?data, QSsl.EncodingFormat?format?=?QSsl.Pem)`
* `list-of-QSslCertificate fromDevice (QIODevice?device, QSsl.EncodingFormat?format?=?QSsl.Pem)`
* `list-of-QSslCertificate fromPath (QString?path, QSsl.EncodingFormat?format?=?QSsl.Pem, QRegExp.PatternSyntax?syntax?=?QRegExp.FixedString)`
### Special Methods
* `bool __eq__ (self, QSslCertificate?other)`
* `bool __ne__ (self, QSslCertificate?other)`
* * *
## Detailed Description
該QSslCertificate類提供了一個X509證書了方便的API 。
QSslCertificate存儲X509證書,并且通常用于驗證有關本地主機,遠程連接等,或可信任的第三方認證機構的標識和存儲信息。
有許多方法來構造一個QSslCertificate 。最常見的方法是調用[QSslSocket.peerCertificate](qsslsocket.html#peerCertificate)( ) ,它返回一個QSslCertificate對象,或[QSslSocket.peerCertificateChain](qsslsocket.html#peerCertificateChain)( ) ,它返回它們的列表。您也可以加載一個DER證書(二進制)或PEM ( Base64編碼)編碼的捆綁,通常存儲為一個或多個本地文件,或在Qt的資源。
您可以致電[isNull](qsslcertificate.html#isNull)()來檢查,如果你的證書為null 。默認情況下, QSslCertificate構造一個空證書。要檢查證書是否有效,呼叫[isValid](qsslcertificate.html#isValid)( ) 。空證書是無效的,但一個無效的證書不一定空。如果你想重置所有內容的憑證,請致電[clear](qsslcertificate.html#clear)( ) 。
加載證書后,您可以找到有關證書,它的主題,它的發行者信息,通過調用許多存取功能之一,包括[version](qsslcertificate.html#version)( )[serialNumber](qsslcertificate.html#serialNumber)( )[issuerInfo](qsslcertificate.html#issuerInfo)()和[subjectInfo](qsslcertificate.html#subjectInfo)( ) 。您可以致電[effectiveDate](qsslcertificate.html#effectiveDate)()和[expiryDate](qsslcertificate.html#expiryDate)()來檢查時,啟動證書是有效,當它過期。該[publicKey](qsslcertificate.html#publicKey)( )函數返回證書主題的公鑰作為[QSslKey](qsslkey.html)。您可以致電[issuerInfo](qsslcertificate.html#issuerInfo)()或[subjectInfo](qsslcertificate.html#subjectInfo)()來獲取有關證書頒發者和它的主題的詳細信息。
在內部, QSslCertificate被存儲為一個X509結構。您可以通過調用訪問此手柄[handle](qsslcertificate.html#handle)() ,但結果可能不是可移植的。
* * *
## Type Documentation
```
QSslCertificate.SubjectInfo
```
介紹了可以傳遞給鑰匙[QSslCertificate.issuerInfo](qsslcertificate.html#issuerInfo)()或[QSslCertificate.subjectInfo](qsslcertificate.html#subjectInfo)()來獲取有關證書頒發者或主題的信息。
| Constant | Value | Description |
| --- | --- | --- |
| `QSslCertificate.Organization` | `0` | “O”的組織的名稱。 |
| `QSslCertificate.CommonName` | `1` | “CN”的通用名稱;最常這是用來存儲主機名。 |
| `QSslCertificate.LocalityName` | `2` | “L”的地方。 |
| `QSslCertificate.OrganizationalUnitName` | `3` | 「其他指定用途“的組織單位名稱。 |
| `QSslCertificate.CountryName` | `4` | “C”的國家。 |
| `QSslCertificate.StateOrProvinceName` | `5` | “ST”的州或省。 |
* * *
## Method Documentation
```
QSslCertificate.__init__ (self, QIODevice?device, QSsl.EncodingFormat?format?=?QSsl.Pem)
```
構造一個[QSslCertificate](qsslcertificate.html)閱讀_format_從編碼數據_device_并使用找到的第一個證書。您可以稍后致電[isNull](qsslcertificate.html#isNull)() ,以查看是否_device_包含一個證書,如果加載成功后,該證書。
```
QSslCertificate.__init__ (self, QByteArray?data?=?QByteArray(), QSsl.EncodingFormat?format?=?QSsl.Pem)
```
構造一個[QSslCertificate](qsslcertificate.html)通過解析_format_編碼_data_并使用找到的第一個可用的證書。您可以稍后致電[isNull](qsslcertificate.html#isNull)() ,以查看是否_data_包含一個證書,如果加載成功后,該證書。
```
QSslCertificate.__init__ (self, QSslCertificate?other)
```
構造完全相同的副本_other_。
```
dict-of-QSsl.AlternateNameEntryType-list-of-QString QSslCertificate.alternateSubjectNames (self)
```
返回此證書備用主題名的列表。備選主題名稱通常包含主機名,可以使用通配符,即有效期為這個??證書。
這些名稱對所連接的對端的主機名進行測試,如果任一標的信息[CommonName](qsslcertificate.html#SubjectInfo-enum)沒有定義一個有效的主機名,或拍攝主體信息名稱不匹配對端的主機名。
**See also** [subjectInfo](qsslcertificate.html#subjectInfo)( ) 。
```
QSslCertificate.clear (self)
```
清除該證書的內容,使之成為一個空證書。
**See also** [isNull](qsslcertificate.html#isNull)( ) 。
```
QByteArray QSslCertificate.digest (self, QCryptographicHash.Algorithm?algorithm?=?QCryptographicHash.Md5)
```
[
返回此證書的加密摘要。默認情況下,一個MD5摘要將會產生,但您也可以指定自定義_algorithm_。
](qbytearray.html)
```
QDateTime QSslCertificate.effectiveDate (self)
```
[](qdatetime.html)
[返回的日期,時間,該證書生效,或空](qdatetime.html)[QDateTime](qdatetime.html)如果這是一個無效的證書。
**See also** [expiryDate](qsslcertificate.html#expiryDate)( ) 。
```
QDateTime QSslCertificate.expiryDate (self)
```
[](qdatetime.html)
[返回日期時間的證書過期,或空](qdatetime.html)[QDateTime](qdatetime.html)如果這是一個無效的證書。
**See also** [effectiveDate](qsslcertificate.html#effectiveDate)( ) 。
```
list-of-QSslCertificate QSslCertificate.fromData (QByteArray?data, QSsl.EncodingFormat?format?=?QSsl.Pem)
```
搜索和分析所有證書_data_被編碼在指定_format_并返回他們的證書的列表。
**See also** [fromDevice](qsslcertificate.html#fromDevice)( ) 。
```
list-of-QSslCertificate QSslCertificate.fromDevice (QIODevice?device, QSsl.EncodingFormat?format?=?QSsl.Pem)
```
搜索和分析所有證書_device_被編碼在指定_format_并返回他們的證書的列表。
**See also** [fromData](qsslcertificate.html#fromData)( ) 。
```
list-of-QSslCertificate QSslCertificate.fromPath (QString?path, QSsl.EncodingFormat?format?=?QSsl.Pem, QRegExp.PatternSyntax?syntax?=?QRegExp.FixedString)
```
搜索中的所有文件_path_對于證書編碼指定_format_并返回它們在列表中。_must_是一個文件或一個圖案匹配一個或多個文件,所指定的_syntax_。
例如:
```
foreach (const [QSslCertificate](qsslcertificate.html) &cert, [QSslCertificate](qsslcertificate.html).fromPath("C:/ssl/certificate.*.pem", [QSsl](qssl.html).Pem,
[QRegExp](qregexp.html).Wildcard)) {
qDebug() << cert.issuerInfo([QSslCertificate](qsslcertificate.html).Organization);
}
```
**See also** [fromData](qsslcertificate.html#fromData)( ) 。
```
int QSslCertificate.handle (self)
```
返回一個指向本地證書手柄,如果有一個或一個空指針,否則。
你可以使用這個句柄,與原生API一起,訪問有關證書的擴展信息。
**Warning:**使用此功能有被非便攜式的概率很高,它的返回值可能會有所不同從平臺到平臺或次要版本變更次要版本。
```
bool QSslCertificate.isNull (self)
```
返回True如果這是一個空證書(即一個沒有內容的證書),否則返回False 。
默認情況下,[QSslCertificate](qsslcertificate.html)構造一個空證書。
**See also** [isValid](qsslcertificate.html#isValid)()和[clear](qsslcertificate.html#clear)( ) 。
```
QString QSslCertificate.issuerInfo (self, SubjectInfo?info)
```
返回發行人信息的_subject_從證書,或空字符串,如果沒有信息_subject_在證書中。
**See also** [subjectInfo](qsslcertificate.html#subjectInfo)( ) 。
```
QString QSslCertificate.issuerInfo (self, QByteArray?tag)
```
返回發行人信息_tag_從證書,或空字符串,如果沒有信息_tag_在證書中。
**See also** [subjectInfo](qsslcertificate.html#subjectInfo)( ) 。
```
bool QSslCertificate.isValid (self)
```
返回True如果該證書是有效的,否則返回False 。
注:目前,該功能會檢查當前的數據時間是在此期間,該證書被認為有效的日期時間范圍內,并檢查該證書是不是在欺詐證書的黑名單。
**See also** [isNull](qsslcertificate.html#isNull)( ) 。
```
QSslKey QSslCertificate.publicKey (self)
```
[
返回證書主題的公鑰。
](qsslkey.html)
```
QByteArray QSslCertificate.serialNumber (self)
```
[
以十進制格式返回該證書的序列號字符串。若序列號不能轉換為十進制格式(例如,如果它大于4294967295 ,這意味著它不適合4個字節) ,則返回其十六進制的版本。
```
QString QSslCertificate.subjectInfo (self, SubjectInfo?info)
```
返回的信息為_subject_,或空字符串,如果沒有信息_subject_在證書中。
](qbytearray.html)
[**See also**](qbytearray.html) [issuerInfo](qsslcertificate.html#issuerInfo)( ) 。
```
QString QSslCertificate.subjectInfo (self, QByteArray?tag)
```
返回主題信息_tag_,或空字符串,如果沒有信息_tag_在證書中。
**See also** [issuerInfo](qsslcertificate.html#issuerInfo)( ) 。
```
QByteArray QSslCertificate.toDer (self)
```
[
返回此證書轉換為DER (二進制)編碼表示。
](qbytearray.html)
```
QByteArray QSslCertificate.toPem (self)
```
[
返回此證書轉換為PEM ( Base64編碼)編碼表示。
](qbytearray.html)
```
QByteArray QSslCertificate.version (self)
```
[
返回證書的版本字符串。
```
bool QSslCertificate.__eq__ (self, QSslCertificate?other)
```
```
bool QSslCertificate.__ne__ (self, QSslCertificate?other)
```
](qbytearray.html)
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- QRect Class Reference
- QRectF Class Reference
- QRegExp Class Reference
- QRegExpValidator Class Reference
- QRegion Class Reference
- QResizeEvent Class Reference
- QResource Class Reference
- QRubberBand Class Reference
- QRunnable Class Reference
- QScriptClass Class Reference
- QScriptClassPropertyIterator Class Reference
- QScriptContext Class Reference
- QScriptContextInfo Class Reference
- QScriptEngine Class Reference
- QScriptEngineAgent Class Reference
- QScriptEngineDebugger Class Reference
- QScriptString Class Reference
- QScriptSyntaxCheckResult Class Reference
- QScriptValue Class Reference
- QScriptValueIterator Class Reference
- QScrollArea Class Reference
- QScrollBar Class Reference
- QSemaphore Class Reference
- QSequentialAnimationGroup Class Reference
- QSessionManager Class Reference
- QSettings Class Reference
- QSharedMemory Class Reference
- QShortcut Class Reference
- QShortcutEvent Class Reference
- QShowEvent Class Reference
- QSignalMapper Class Reference
- QSignalTransition Class Reference
- QSimpleXmlNodeModel Class Reference
- QSize Class Reference
- QSizeF Class Reference
- QSizeGrip Class Reference
- QSizePolicy Class Reference
- QSlider Class Reference
- QSocketNotifier Class Reference
- QSortFilterProxyModel Class Reference
- QSound Class Reference
- QSourceLocation Class Reference
- QSpacerItem Class Reference
- QSpinBox Class Reference
- QSplashScreen Class Reference
- QSplitter Class Reference
- QSplitterHandle Class Reference
- QSql Class Reference
- QSqlDatabase Class Reference
- QSqlDriver Class Reference
- QSqlDriverCreatorBase Class Reference
- QSqlError Class Reference
- QSqlField Class Reference
- QSqlIndex Class Reference
- QSqlQuery Class Reference
- QSqlQueryModel Class Reference
- QSqlRecord Class Reference
- QSqlRelation Class Reference
- QSqlRelationalDelegate Class Reference
- QSqlRelationalTableModel Class Reference
- QSqlResult Class Reference
- QSqlTableModel Class Reference
- Qt4.7文檔翻譯:Qt樣式單參考,Qt Style Sheets Reference
- QSsl Class Reference
- QSslCertificate Class Reference
- QSslCipher Class Reference
- QSslConfiguration Class Reference
- QSslError Class Reference
- QSslKey Class Reference
- QSslSocket Class Reference
- QStackedLayout Class Reference
- QStackedWidget Class Reference
- QStandardItem Class Reference
- QStandardItemModel Class Reference
- QState Class Reference
- QStateMachine Class Reference
- QStaticText Class Reference
- QStatusBar Class Reference
- QStatusTipEvent Class Reference
- QString Class Reference
- QStringList Class Reference
- QStringListModel Class Reference
- QStringMatcher Class Reference
- QStringRef Class Reference
- QStyle Class Reference
- QStyledItemDelegate Class Reference
- QStyleFactory Class Reference
- QStyleHintReturn Class Reference
- QStyleHintReturnMask Class Reference
- QStyleHintReturnVariant Class Reference
- QStyleOption Class Reference
- QStyleOptionButton Class Reference
- QStyleOptionComboBox Class Reference
- QStyleOptionComplex Class Reference
- QStyleOptionDockWidget Class Reference
- QStyleOptionDockWidgetV2 Class Reference
- QStyleOptionFocusRect Class Reference
- QStyleOptionFrame Class Reference
- QStyleOptionFrameV2 Class Reference
- QStyleOptionFrameV3 Class Reference
- QStyleOptionGraphicsItem Class Reference
- QStyleOptionGroupBox Class Reference
- QStyleOptionHeader Class Reference
- QStyleOptionMenuItem Class Reference
- QStyleOptionProgressBar Class Reference
- QStyleOptionProgressBarV2 Class Reference
- QStyleOptionRubberBand Class Reference
- QStyleOptionSizeGrip Class Reference
- QStyleOptionSlider Class Reference
- QStyleOptionSpinBox Class Reference
- QStyleOptionTab Class Reference
- QStyleOptionTabBarBase Class Reference
- QStyleOptionTabBarBaseV2 Class Reference
- QStyleOptionTabV2 Class Reference
- QStyleOptionTabV3 Class Reference
- QStyleOptionTabWidgetFrame Class Reference
- QStyleOptionTabWidgetFrameV2 Class Reference
- QStyleOptionTitleBar Class Reference
- QStyleOptionToolBar Class Reference
- QStyleOptionToolBox Class Reference
- QStyleOptionToolBoxV2 Class Reference
- QStyleOptionToolButton Class Reference
- QStyleOptionViewItem Class Reference
- QStyleOptionViewItemV2 Class Reference
- QStyleOptionViewItemV3 Class Reference
- QStyleOptionViewItemV4 Class Reference
- QStylePainter Class Reference
- QSvgGenerator Class Reference
- QSvgRenderer Class Reference
- QSvgWidget Class Reference
- QSwipeGesture Class Reference
- QSyntaxHighlighter Class Reference
- QSysInfo Class Reference
- QSystemLocale Class Reference
- QSystemSemaphore Class Reference
- QSystemTrayIcon Class Reference
- Qt Class Reference
- QTabBar Class Reference
- QTabletEvent Class Reference
- QTableView Class Reference
- QTableWidget Class Reference
- QTableWidgetItem Class Reference
- QTableWidgetSelectionRange Class Reference
- QTabWidget Class Reference
- QTapAndHoldGesture Class Reference
- QTapGesture Class Reference
- QTcpServer Class Reference
- QTcpSocket Class Reference
- QTemporaryFile Class Reference
- QTest Class Reference
- QTextBlock Class Reference
- QTextBlockFormat Class Reference
- QTextBlockGroup Class Reference
- QTextBlockUserData Class Reference
- QTextBoundaryFinder Class Reference
- QTextBrowser Class Reference
- QTextCharFormat Class Reference
- QTextCodec Class Reference
- QTextCursor Class Reference
- QTextDecoder Class Reference
- QTextDocument Class Reference
- QTextDocumentFragment Class Reference
- QTextDocumentWriter Class Reference
- QTextEdit Class Reference
- QTextEncoder Class Reference
- QTextFormat Class Reference
- QTextFragment Class Reference
- QTextFrame Class Reference
- QTextFrameFormat Class Reference
- QTextImageFormat Class Reference
- QTextInlineObject Class Reference
- QTextItem Class Reference
- QTextLayout Class Reference
- QTextLength Class Reference
- QTextLine Class Reference
- QTextList Class Reference
- QTextListFormat Class Reference
- QTextObject Class Reference
- QTextObjectInterface Class Reference
- QTextOption Class Reference
- QTextStream Class Reference
- QTextTable Class Reference
- QTextTableCell Class Reference
- QTextTableCellFormat Class Reference
- QTextTableFormat Class Reference
- QThread Class Reference
- QThreadPool Class Reference
- QTime Class Reference
- QTimeEdit Class Reference
- QTimeLine Class Reference
- QTimer Class Reference
- QTimerEvent Class Reference
- QToolBar Class Reference
- QToolBox Class Reference
- QToolButton Class Reference
- QToolTip Class Reference
- QTouchEvent Class Reference
- Reference
- QTransform Class Reference
- QTranslator Class Reference
- QTreeView Class Reference
- QTreeWidget Class Reference
- QTreeWidgetItem Class Reference
- QTreeWidgetItemIterator Class Reference
- QUdpSocket Class Reference
- QUndoCommand Class Reference
- QUndoGroup Class Reference
- QUndoStack Class Reference
- QUndoView Class Reference
- QUrl Class Reference
- QUrlInfo Class Reference
- QUuid Class Reference
- QValidator Class Reference
- QVariant Class Reference
- QVariantAnimation Class Reference
- QVBoxLayout Class Reference
- QVector2D Class Reference
- QVector3D Class Reference
- QVector4D Class Reference
- QVideoFrame Class Reference
- QVideoSurfaceFormat Class Reference
- QWaitCondition Class Reference
- QWebDatabase Class Reference
- QWebElement Class Reference
- QWebElementCollection Class Reference
- QWebFrame Class Reference
- QWebHistory Class Reference
- QWebHistoryInterface Class Reference
- QWebHistoryItem Class Reference
- QWebHitTestResult Class Reference
- QWebInspector Class Reference
- QWebPage Class Reference
- QWebPluginFactory Class Reference
- QWebSecurityOrigin Class Reference
- QWebSettings Class Reference
- QWebView Class Reference
- QWhatsThis Class Reference
- QWhatsThisClickedEvent Class Reference
- QWheelEvent Class Reference
- QWidget Class Reference
- QWidgetAction Class Reference
- QWidgetItem Class Reference
- QWindowStateChangeEvent Class Reference
- QWizard Class Reference
- QWizardPage Class Reference
- QWorkspace Class Reference
- QWriteLocker Class Reference
- QX11EmbedContainer Class Reference
- QX11EmbedWidget Class Reference
- QX11Info Class Reference
- QXmlAttributes Class Reference
- QXmlContentHandler Class Reference
- QXmlDeclHandler Class Reference
- QXmlDefaultHandler Class Reference
- QXmlDTDHandler Class Reference
- QXmlEntityResolver Class Reference
- QXmlErrorHandler Class Reference
- QXmlFormatter Class Reference
- QXmlInputSource Class Reference
- QXmlItem Class Reference
- QXmlLexicalHandler Class Reference
- QXmlLocator Class Reference
- QXmlName Class Reference
- QXmlNamePool Class Reference
- QXmlNamespaceSupport Class Reference
- QXmlNodeModelIndex Class Reference
- QXmlParseException Class Reference
- QXmlQuery Class Reference
- QXmlReader Class Reference
- QXmlResultItems Class Reference
- QXmlSchema Class Reference
- QXmlSchemaValidator Class Reference
- QXmlSerializer Class Reference
- QXmlSimpleReader Class Reference
- QXmlStreamAttribute Class Reference
- QXmlStreamAttributes Class Reference
- QXmlStreamEntityDeclaration Class Reference
- QXmlStreamEntityResolver Class Reference
- QXmlStreamNamespaceDeclaration Class Reference
- QXmlStreamNotationDeclaration Class Reference
- QXmlStreamReader Class Reference
- QXmlStreamWriter Class Reference