The QSslPreSharedKeyAuthenticator class provides authentication data for pre shared keys (PSK) ciphersuites. 更多...
| 头： | #include <QSslPreSharedKeyAuthenticator> |
| qmake: | QT += network |
| Since: | Qt 5.5 |
该类在 Qt 5.5 引入。
注意： 此类的所有函数 可重入 .
| QSslPreSharedKeyAuthenticator (const QSslPreSharedKeyAuthenticator & authenticator ) | |
| QSslPreSharedKeyAuthenticator () | |
| QSslPreSharedKeyAuthenticator & | operator= (QSslPreSharedKeyAuthenticator && authenticator ) |
| QSslPreSharedKeyAuthenticator & | operator= (const QSslPreSharedKeyAuthenticator & authenticator ) |
| ~QSslPreSharedKeyAuthenticator () | |
| QByteArray | identity () const |
| QByteArray | identityHint () const |
| int | maximumIdentityLength () const |
| int | maximumPreSharedKeyLength () const |
| QByteArray | preSharedKey () const |
| void | setIdentity (const QByteArray & identity ) |
| void | setPreSharedKey (const QByteArray & preSharedKey ) |
| void | swap (QSslPreSharedKeyAuthenticator & authenticator ) |
| bool | operator!= (const QSslPreSharedKeyAuthenticator & lhs , const QSslPreSharedKeyAuthenticator & rhs ) |
| bool | operator== (const QSslPreSharedKeyAuthenticator & lhs , const QSslPreSharedKeyAuthenticator & rhs ) |
The QSslPreSharedKeyAuthenticator class is used by an SSL socket to provide the required authentication data in a pre shared key (PSK) ciphersuite.
In a PSK handshake, the client must derive a key, which must match the key set on the server. The exact algorithm of deriving the key depends on the application; however, for this purpose, the server may send an identity hint to the client. This hint, combined with other information (for instance a passphrase), is then used by the client to construct the shared key.
The QSslPreSharedKeyAuthenticator provides means to client applications for completing the PSK handshake. The client application needs to connect a slot to the QSslSocket::preSharedKeyAuthenticationRequired () signal:
connect(socket, &QSslSocket::preSharedKeyAuthenticationRequired,
this, &AuthManager::handlePreSharedKeyAuthentication);
The signal carries a QSslPreSharedKeyAuthenticator object containing the identity hint the server sent to the client, and which must be filled with the corresponding client identity and the derived key:
void AuthManager::handlePreSharedKeyAuthentication(QSslPreSharedKeyAuthenticator *authenticator)
{
authenticator->setIdentity("My Qt App");
const QByteArray key = deriveKey(authenticator->identityHint(), passphrase);
authenticator->setPreSharedKey(key);
}
注意： PSK ciphersuites are supported only when using OpenSSL 1.0.1 (or greater) as the SSL backend.
注意： PSK is currently only supported in OpenSSL.
另请参阅 QSslSocket .
Constructs a QSslPreSharedKeyAuthenticator object as a copy of authenticator .
另请参阅 operator= ().
Constructs a default QSslPreSharedKeyAuthenticator object.
The identity hint, the identity and the key will be initialized to empty byte arrays; the maximum length for both the identity and the key will be initialized to 0.
Move-assigns the QSslPreSharedKeyAuthenticator 对象 authenticator to this object, and returns a reference to the moved instance.
赋值 QSslPreSharedKeyAuthenticator 对象 authenticator to this object, and returns a reference to the copy.
销毁 QSslPreSharedKeyAuthenticator 对象。
Returns the PSK client identity.
另请参阅 setIdentity ().
Returns the PSK identity hint as provided by the server. The interpretation of this hint is left to the application.
Returns the maximum length, in bytes, of the PSK client identity.
注意： it is possible to set an identity whose length is greater than maximumIdentityLength(); in this case, only the first maximumIdentityLength() bytes will be actually sent to the server.
另请参阅 setIdentity ().
Returns the maximum length, in bytes, of the pre shared key.
注意： it is possible to set a key whose length is greater than the maximumPreSharedKeyLength(); in this case, only the first maximumPreSharedKeyLength() bytes will be actually sent to the server.
另请参阅 setPreSharedKey ().
Returns the pre shared key.
另请参阅 setPreSharedKey ().
Sets the PSK client identity (to be advised to the server) to identity .
注意： it is possible to set an identity whose length is greater than maximumIdentityLength (); in this case, only the first maximumIdentityLength () bytes will be actually sent to the server.
另请参阅 identity () 和 maximumIdentityLength ().
Sets the pre shared key to preSharedKey .
注意： it is possible to set a key whose length is greater than the maximumPreSharedKeyLength (); in this case, only the first maximumPreSharedKeyLength () bytes will be actually sent to the server.
另请参阅 preSharedKey (), maximumPreSharedKeyLength ()，和 QByteArray::fromHex ().
Swaps the QSslPreSharedKeyAuthenticator 对象 authenticator 与此对象。此操作非常快且从不失败。
Returns true if the authenticator object lhs is different than rhs ; false otherwise.
该函数在 Qt 5.5 引入。
Returns true if the authenticator object lhs 等于 rhs ; false otherwise.
Two authenticator objects are equal if and only if they have the same identity hint, identity, pre shared key, maximum length for the identity and maximum length for the pre shared key.
该函数在 Qt 5.5 引入。