QCryptographicHash 類

QCryptographicHash 類提供生成加密哈希的辦法。更多...

頭：	#include <QCryptographicHash>
qmake:	QT += core
Since:	Qt 4.3

該類在 Qt 4.3 引入。

所有成員列錶，包括繼承成員

注意： 此類的所有函數可重入 .

公共類型

enum	Algorithm { Md4, Md5, Sha1, Sha224, Sha256, …, Keccak_512 }

公共函數

	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

靜態公共成員

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

詳細描述

QCryptographicHash 可用於生成二進製 (或文本數據) 的加密哈希。

參考文檔編製中 QCryptographicHash::Algorithm 枚舉，支持的算法列錶。

成員類型文檔編製

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

成員函數文檔編製

QCryptographicHash:: QCryptographicHash ( QCryptographicHash::Algorithm method )

構造可用於從數據創建加密哈希的對象，使用 method .

QCryptographicHash:: ~QCryptographicHash ()

銷毀對象。

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 )

此函數重載 addData()。

bool QCryptographicHash:: addData ( QIODevice * device )

讀取數據，從打開 QIODevice device 直到它結束並哈希為止。返迴 true 若讀取是成功的。

該函數在 Qt 5.0 引入。

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

返迴哈希為 data 使用 method .

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

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

該函數在 Qt 5.12 引入。

void QCryptographicHash:: reset ()

重置對象。

QByteArray QCryptographicHash:: result () const

返迴最終的哈希值。

另請參閱 QByteArray::toHex ().