QCryptographicHash

The QCryptographicHash class provides a way to generate cryptographic hashes. More…

Synopsis

Functions

• def addData (data)

• def addData (data)

• def addData (device)

• def reset ()

• def result ()

Static functions

• def hash (data, method)

• def hashLength (method)

Detailed Description

QCryptographicHash can be used to generate cryptographic hashes of binary or text data.

Refer to the documentation of the Algorithm enum for a list of the supported algorithms.

class PySide2.QtCore.QCryptographicHash(method)

param method:

Algorithm

Constructs an object that can be used to create a cryptographic hash from data using method .

PySide2.QtCore.QCryptographicHash.Algorithm

Note

In Qt versions before 5.9, when asked to generate a SHA3 hash sum, QCryptographicHash actually calculated Keccak. If you need compatibility with SHA-3 hashes produced by those versions of Qt, use the Keccak_ enumerators. Alternatively, if source compatibility is required, define the macro QT_SHA3_KECCAK_COMPAT .

Constant	Description
QCryptographicHash.Md4	Generate an MD4 hash sum
QCryptographicHash.Md5	Generate an MD5 hash sum
QCryptographicHash.Sha1	Generate an SHA-1 hash sum
QCryptographicHash.Sha224	Generate an SHA-224 hash sum (SHA-2). Introduced in Qt 5.0
QCryptographicHash.Sha256	Generate an SHA-256 hash sum (SHA-2). Introduced in Qt 5.0
QCryptographicHash.Sha384	Generate an SHA-384 hash sum (SHA-2). Introduced in Qt 5.0
QCryptographicHash.Sha512	Generate an SHA-512 hash sum (SHA-2). Introduced in Qt 5.0
QCryptographicHash.Sha3_224	Generate an SHA3-224 hash sum. Introduced in Qt 5.1
QCryptographicHash.Sha3_256	Generate an SHA3-256 hash sum. Introduced in Qt 5.1
QCryptographicHash.Sha3_384	Generate an SHA3-384 hash sum. Introduced in Qt 5.1
QCryptographicHash.Sha3_512	Generate an SHA3-512 hash sum. Introduced in Qt 5.1
QCryptographicHash.Keccak_224	Generate a Keccak-224 hash sum. Introduced in Qt 5.9.2
QCryptographicHash.Keccak_256	Generate a Keccak-256 hash sum. Introduced in Qt 5.9.2
QCryptographicHash.Keccak_384	Generate a Keccak-384 hash sum. Introduced in Qt 5.9.2
QCryptographicHash.Keccak_512	Generate a Keccak-512 hash sum. Introduced in Qt 5.9.2

PySide2.QtCore.QCryptographicHash.addData(device)

Parameters:

device – PySide2.QtCore.QIODevice

Return type:

bool

Reads the data from the open QIODevice device until it ends and hashes it. Returns true if reading was successful.

PySide2.QtCore.QCryptographicHash.addData(data)

Parameters:

data – PySide2.QtCore.QByteArray

PySide2.QtCore.QCryptographicHash.addData(data)

Parameters:

data – str

Adds the first length chars of data to the cryptographic hash.

static PySide2.QtCore.QCryptographicHash.hash(data, method)

Parameters:

• data – PySide2.QtCore.QByteArray

• method – Algorithm

Return type:

PySide2.QtCore.QByteArray

Returns the hash of data using method .

static PySide2.QtCore.QCryptographicHash.hashLength(method)

Parameters:

method – Algorithm

Return type:

int

Returns the size of the output of the selected hash method in bytes.

PySide2.QtCore.QCryptographicHash.reset()

Resets the object.

PySide2.QtCore.QCryptographicHash.result()

Return type:

PySide2.QtCore.QByteArray

Returns the final hash value.

See also

toHex()