QSslDiffieHellmanParameters Class

成员函数

QSslDiffieHellmanParameters::QSslDiffieHellmanParameters()

Constructs an empty QSslDiffieHellmanParameters instance.

If an empty QSslDiffieHellmanParameters instance is set on a QSslConfiguration object, Diffie-Hellman negotiation will be disabled.

参见 isValid() and QSslConfiguration.

QSslDiffieHellmanParameters::QSslDiffieHellmanParameters(const QSslDiffieHellmanParameters &other)

Constructs an identical copy of other.

QSslDiffieHellmanParameters::QSslDiffieHellmanParameters(QSslDiffieHellmanParameters &&other)

Move-copy constructor.

QSslDiffieHellmanParameters::~QSslDiffieHellmanParameters()

Destroys the QSslDiffieHellmanParameters object.

[static] QSslDiffieHellmanParameters QSslDiffieHellmanParameters::defaultParameters()

Returns the default QSslDiffieHellmanParameters used by QSslSocket.

This is currently the 1024-bit MODP group from RFC 2459, also known as the Second Oakley Group.

Error QSslDiffieHellmanParameters::error() const

Returns the error that caused the QSslDiffieHellmanParameters object to be invalid.

QString QSslDiffieHellmanParameters::errorString() const

Returns a human-readable description of the error that caused the QSslDiffieHellmanParameters object to be invalid.

[static] QSslDiffieHellmanParameters QSslDiffieHellmanParameters::fromEncoded(const QByteArray &encoded, QSsl::EncodingFormat encoding = QSsl::Pem)

Constructs a QSslDiffieHellmanParameters object using the byte array encoded in either PEM or DER form as specified by encoding.

Use the isValid() method on the returned object to check whether the Diffie-Hellman parameters were valid and loaded correctly.

参见 isValid() and QSslConfiguration.

[static] QSslDiffieHellmanParameters QSslDiffieHellmanParameters::fromEncoded(QIODevice *device, QSsl::EncodingFormat encoding = QSsl::Pem)

Constructs a QSslDiffieHellmanParameters object by reading from device in either PEM or DER form as specified by encoding.

Use the isValid() method on the returned object to check whether the Diffie-Hellman parameters were valid and loaded correctly.

In particular, if device is nullptr or not open for reading, an invalid object will be returned.

参见 isValid() and QSslConfiguration.

bool QSslDiffieHellmanParameters::isEmpty() const

Returns true if this is a an empty QSslDiffieHellmanParameters instance.

Setting an empty QSslDiffieHellmanParameters instance on a QSslSocket-based server will disable Diffie-Hellman key exchange.

bool QSslDiffieHellmanParameters::isValid() const

Returns true if this is a valid QSslDiffieHellmanParameters; otherwise false.

This method should be used after constructing a QSslDiffieHellmanParameters object to determine its validity.

If a QSslDiffieHellmanParameters object is not valid, you can use the error() method to determine what error prevented the object from being constructed.

参见 error().

void QSslDiffieHellmanParameters::swap(QSslDiffieHellmanParameters &other)

Swaps this QSslDiffieHellmanParameters with other. This function is very fast and never fails.

QSslDiffieHellmanParameters &QSslDiffieHellmanParameters::operator=(const QSslDiffieHellmanParameters &other)

Copies the contents of other into this QSslDiffieHellmanParameters, making the two QSslDiffieHellmanParameters identical.

Returns a reference to this QSslDiffieHellmanParameters.

QSslDiffieHellmanParameters &QSslDiffieHellmanParameters::operator=(QSslDiffieHellmanParameters &&other)

Move-assigns other to this QSslDiffieHellmanParameters instance.

Note: The moved-from object other is placed in a partially-formed state, in which the only valid operations are destruction and assignment of a new value.