QCryptographicHash Class
The QCryptographicHash class provides a way to generate cryptographic hashes. More...
| Header: | #include <QCryptographicHash> |
| qmake: | QT += core |
| Since: | Qt 4.3 |
Note: All functions in this class are reentrant.
Public Types
| enum | Algorithm { Md4, Md5, Sha1, Sha224, ..., Keccak_512 } |
Public Functions
| QCryptographicHash(QCryptographicHash::Algorithm method) | |
| ~QCryptographicHash() | |
| void | addData(const char *data, int length) |
| void | addData(const QByteArray &data) |
| bool | addData(QIODevice *device) |
| void | reset() |
| QByteArray | result() const |
Static Public Members
| QByteArray | hash(const QByteArray &data, QCryptographicHash::Algorithm method) |
| int | hashLength(QCryptographicHash::Algorithm method) |
| const QMetaObject | staticMetaObject |
Detailed Description
The QCryptographicHash class provides a way to generate cryptographic hashes.
QCryptographicHash can be used to generate cryptographic hashes of binary or text data.
Refer to the documentation of the QCryptographicHash::Algorithm enum for a list of the supported algorithms.
Member Type Documentation
enum 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 | Value | Description |
|---|---|---|
QCryptographicHash::Md4 | 0 | Generate an MD4 hash sum |
QCryptographicHash::Md5 | 1 | Generate an MD5 hash sum |
QCryptographicHash::Sha1 | 2 | Generate an SHA-1 hash sum |
QCryptographicHash::Sha224 | 3 | Generate an SHA-224 hash sum (SHA-2). Introduced in Qt 5.0 |
QCryptographicHash::Sha256 | 4 | Generate an SHA-256 hash sum (SHA-2). Introduced in Qt 5.0 |
QCryptographicHash::Sha384 | 5 | Generate an SHA-384 hash sum (SHA-2). Introduced in Qt 5.0 |
QCryptographicHash::Sha512 | 6 | Generate an SHA-512 hash sum (SHA-2). Introduced in Qt 5.0 |
QCryptographicHash::Sha3_224 | RealSha3_224 | Generate an SHA3-224 hash sum. Introduced in Qt 5.1 |
QCryptographicHash::Sha3_256 | RealSha3_256 | Generate an SHA3-256 hash sum. Introduced in Qt 5.1 |
QCryptographicHash::Sha3_384 | RealSha3_384 | Generate an SHA3-384 hash sum. Introduced in Qt 5.1 |
QCryptographicHash::Sha3_512 | RealSha3_512 | Generate an SHA3-512 hash sum. Introduced in Qt 5.1 |
QCryptographicHash::Keccak_224 | 7 | Generate a Keccak-224 hash sum. Introduced in Qt 5.9.2 |
QCryptographicHash::Keccak_256 | 8 | Generate a Keccak-256 hash sum. Introduced in Qt 5.9.2 |
QCryptographicHash::Keccak_384 | 9 | Generate a Keccak-384 hash sum. Introduced in Qt 5.9.2 |
QCryptographicHash::Keccak_512 | 10 | Generate a Keccak-512 hash sum. Introduced in Qt 5.9.2 |
Member Function Documentation
QCryptographicHash::QCryptographicHash(QCryptographicHash::Algorithm method)
Constructs an object that can be used to create a cryptographic hash from data using method.
QCryptographicHash::~QCryptographicHash()
Destroys the object.
void QCryptographicHash::addData(const char *data, int length)
Adds the first length chars of data to the cryptographic hash.
void QCryptographicHash::addData(const QByteArray &data)
This function overloads addData().
bool QCryptographicHash::addData(QIODevice *device)
Reads the data from the open QIODevice device until it ends and hashes it. Returns true if reading was successful.
This function was introduced in Qt 5.0.
[static] QByteArray QCryptographicHash::hash(const QByteArray &data, QCryptographicHash::Algorithm method)
Returns the hash of data using method.
[static] int QCryptographicHash::hashLength(QCryptographicHash::Algorithm method)
Returns the size of the output of the selected hash method in bytes.
This function was introduced in Qt 5.12.
void QCryptographicHash::reset()
Resets the object.
QByteArray QCryptographicHash::result() const
Returns the final hash value.
See also QByteArray::toHex().
© 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.