QCryptographicHash Class▲
-
Header: QCryptographicHash
-
CMake:
find_package(Qt6 REQUIRED COMPONENTS Core)
target_link_libraries(mytarget PRIVATE Qt6::Core)
-
qmake: QT += core
-
Group: QCryptographicHash is part of tools
Detailed Description▲
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▲
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 |
|
QCryptographicHash::Blake2b_160 |
15 |
Generate a BLAKE2b-160 hash sum. Introduced in Qt 6.0 |
|
QCryptographicHash::Blake2b_256 |
16 |
Generate a BLAKE2b-256 hash sum. Introduced in Qt 6.0 |
|
QCryptographicHash::Blake2b_384 |
17 |
Generate a BLAKE2b-384 hash sum. Introduced in Qt 6.0 |
|
QCryptographicHash::Blake2b_512 |
18 |
Generate a BLAKE2b-512 hash sum. Introduced in Qt 6.0 |
|
QCryptographicHash::Blake2s_128 |
19 |
Generate a BLAKE2s-128 hash sum. Introduced in Qt 6.0 |
|
QCryptographicHash::Blake2s_160 |
20 |
Generate a BLAKE2s-160 hash sum. Introduced in Qt 6.0 |
|
QCryptographicHash::Blake2s_224 |
21 |
Generate a BLAKE2s-224 hash sum. Introduced in Qt 6.0 |
|
QCryptographicHash::Blake2s_256 |
22 |
Generate a BLAKE2s-256 hash sum. Introduced in Qt 6.0 |
Member Function Documentation▲
[explicit] 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(QByteArrayView bytes)▲
Adds the characters in bytes to the cryptographic hash.
In Qt versions prior to 6.3, this function took QByteArray, not QByteArrayView.
[since 5.0] 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(QByteArrayView data, QCryptographicHash::Algorithm method)▲
Returns the hash of data using method.
In Qt versions prior to 6.3, this function took QByteArray, not QByteArrayView.
[static, since 5.12] 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▲
[since 6.3] QByteArrayView QCryptographicHash::resultView() const▲
Returns the final hash value.
Note that the returned view remains valid only as long as the QCryptographicHash object is not modified by other means.
This function was introduced in Qt 6.3.
See Also▲
See also result()
Obsolete Members for QCryptographicHash▲
The following members of class QCryptographicHash are deprecated. We strongly advise against using them in new code.
Obsolete Member Function Documentation▲
void QCryptographicHash::addData(const char *data, qsizetype length)▲
This function is deprecated. We strongly advise against using it in new code.
Adds the first length chars of data to the cryptographic hash.
Use the QByteArrayView overload instead.