class QSslDiffieHellmanParameters

The QSslDiffieHellmanParameters class provides an interface for Diffie-Hellman parameters for servers. More

Synopsis

Methods

Static functions

Note

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Detailed Description

QSslDiffieHellmanParameters provides an interface for setting Diffie-Hellman parameters to servers based on QSslSocket .

class Error

Describes a QSslDiffieHellmanParameters error.

Constant

Description

QSslDiffieHellmanParameters.NoError

No error occurred.

QSslDiffieHellmanParameters.InvalidInputDataError

The given input data could not be used to construct a QSslDiffieHellmanParameters object.

QSslDiffieHellmanParameters.UnsafeParametersError

The Diffie-Hellman parameters are unsafe and should not be used.

__init__()

Constructs an empty QSslDiffieHellmanParameters instance.

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

__init__(other)
Parameters:

otherQSslDiffieHellmanParameters

Constructs an identical copy of other.

static defaultParameters()
Return type:

QSslDiffieHellmanParameters

Returns the default QSslDiffieHellmanParameters used by QSslSocket .

This is currently the 2048-bit MODP group from RFC 3526.

error()
Return type:

Error

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

errorString()
Return type:

str

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

static fromEncoded(device[, format=QSsl.Pem])
Parameters:
Return type:

QSslDiffieHellmanParameters

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 None or not open for reading, an invalid object will be returned.

static fromEncoded(encoded[, format=QSsl.Pem])
Parameters:
Return type:

QSslDiffieHellmanParameters

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.

isEmpty()
Return type:

bool

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.

isValid()
Return type:

bool

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.

See also

error()

__ne__(rhs)
Parameters:

rhsQSslDiffieHellmanParameters

Return type:

bool

Returns true if lhs is not equal to rhs; otherwise returns false.

__eq__(rhs)
Parameters:

rhsQSslDiffieHellmanParameters

Return type:

bool

Returns true if lhs is equal to rhs; otherwise returns false.

swap(other)
Parameters:

otherQSslDiffieHellmanParameters

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