QOpcUaAuthenticationInformation Class

The OPC UA authentication information. More...

Header: #include <QOpcUaAuthenticationInformation>
CMake: find_package(Qt6 REQUIRED COMPONENTS OpcUa)
target_link_libraries(mytarget PRIVATE Qt6::OpcUa)
qmake: QT += opcua
Since: QtOpcUa 5.13

Public Functions

QOpcUaAuthenticationInformation(const QOpcUaAuthenticationInformation &rhs)
QOpcUaAuthenticationInformation &operator=(const QOpcUaAuthenticationInformation &rhs)
const QVariant &authenticationData() const
QOpcUaUserTokenPolicy::TokenType authenticationType() const
void setAnonymousAuthentication()
void setCertificateAuthentication()
void setUsernameAuthentication(const QString &username, const QString &password)
bool operator==(const QOpcUaAuthenticationInformation &rhs) const

Detailed Description

This class holds the information necessary to perform a login on a server. Supported authentication mechanisms are

  • Anonymous
  • Username
  • Certificate

The anonymous method is used by default but also can be set manually.

This is an example authentication using username and password.

QOpcUaAuthenticationInformation authInfo;
authInfo.setUsernameAuthentication("user", "password");


See also setAnonymousAuthentication(), setUsernameAuthentication(), and setCertificateAuthentication().

Member Function Documentation

QOpcUaAuthenticationInformation::QOpcUaAuthenticationInformation(const QOpcUaAuthenticationInformation &rhs)

Constructs an authentication information from rhs.


Default constructs an instance of QOpcUaAuthenticationInformation.

QOpcUaAuthenticationInformation &QOpcUaAuthenticationInformation::operator=(const QOpcUaAuthenticationInformation &rhs)

Sets the values from rhs in this authentication information.


Destroys the instance of QOpcUaAuthenticationInformation.

const QVariant &QOpcUaAuthenticationInformation::authenticationData() const

The content of the QVariant returned by this method depends on the currently selected authentication method.

[invokable] QOpcUaUserTokenPolicy::TokenType QOpcUaAuthenticationInformation::authenticationType() const

Returns the current authentication type.

Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.

See also QOpcUaUserTokenPolicy::TokenType.

[invokable] void QOpcUaAuthenticationInformation::setAnonymousAuthentication()

Sets the authentication method to anonymous.

Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.

[invokable] void QOpcUaAuthenticationInformation::setCertificateAuthentication()

Sets the authentication method to use certificates.

When using this authentication type a proper configured QOpcUaPkiConfiguration has to be set to the QOpcUaClient.

Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.

See also QOpcUaPkiConfiguration and QOpcUaClient::setPkiConfiguration().

[invokable] void QOpcUaAuthenticationInformation::setUsernameAuthentication(const QString &username, const QString &password)

Sets the authentication method to username, using the given username and password.

Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.

bool QOpcUaAuthenticationInformation::operator==(const QOpcUaAuthenticationInformation &rhs) const

Returns true if this authentication information has the same value as rhs.

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