内容

公共类型
公共函数
静态公共成员
详细描述

QCryptographicHash 类

QCryptographicHash 类提供生成加密哈希的办法。更多...

头：	#include <QCryptographicHash>
CMake:	find_package(Qt6 COMPONENTS Core REQUIRED) target_link_libraries(mytarget PRIVATE Qt6::Core)
qmake:	QT += core

所有成员列表，包括继承成员

注意： 此类的所有函数可重入 .

公共类型

enum	Algorithm { Md4, Md5, Sha1, Sha224, Sha256, …, Blake2s_256 }

公共函数

	QCryptographicHash (QCryptographicHash::Algorithm method )
	~QCryptographicHash ()
void	addData (const char * data , qsizetype length )
void	addData (const QByteArray & data )
bool	addData (QIODevice * device )
void	reset ()
QByteArray	result () const

静态公共成员

QByteArray	hash (const QByteArray & data , QCryptographicHash::Algorithm method )
int	hashLength (QCryptographicHash::Algorithm method )

详细描述

QCryptographicHash 可用于生成二进制 (或文本数据) 的加密哈希。

参考文档编制中 QCryptographicHash::Algorithm 枚举，支持的算法列表。

成员类型文档编制

enum QCryptographicHash:: Algorithm

注意： 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 .

常量	值	描述
`QCryptographicHash::Md4`	`0`	生成 MD4 哈希和
`QCryptographicHash::Md5`	`1`	生成 MD5 哈希和
`QCryptographicHash::Sha1`	`2`	生成 SHA-1 哈希和
`QCryptographicHash::Sha224`	`3`	生成 SHA-224 哈希和 (SHA-2)。在 Qt 5.0 引入
`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

成员函数文档编制

QCryptographicHash:: QCryptographicHash ( QCryptographicHash::Algorithm method )

构造可用于从数据创建加密哈希的对象，使用 method .

QCryptographicHash:: ~QCryptographicHash ()

销毁对象。

void QCryptographicHash:: addData (const char * data , qsizetype length )

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

void QCryptographicHash:: addData (const QByteArray & data )

此函数重载 addData()。

`[since 5.0]` bool QCryptographicHash:: addData ( QIODevice * device )

读取数据，从打开 QIODevice device 直到它结束并哈希为止。返回 true 若读取是成功的。

该函数在 Qt 5.0 引入。

`[static]` QByteArray QCryptographicHash:: hash (const QByteArray & data , QCryptographicHash::Algorithm method )

返回哈希为 data 使用 method .

`[static, since 5.12]` int QCryptographicHash:: hashLength ( QCryptographicHash::Algorithm method )

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

该函数在 Qt 5.12 引入。

void QCryptographicHash:: reset ()

重置对象。

QByteArray QCryptographicHash:: result () const

返回最终的哈希值。

另请参阅 QByteArray::toHex ().

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