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  5. QCryptographicHash

QCryptographicHash 類

QCryptographicHash 類提供生成加密哈希的辦法。 更多...

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

注意： 此類的所有函數 可重入 .

公共類型

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

公共函數

QCryptographicHash (QCryptographicHash::Algorithm method )
(從 6.5 起) QCryptographicHash (QCryptographicHash && other )
~QCryptographicHash ()
void addData (QByteArrayView bytes )
bool addData (QIODevice * device )
(從 6.5 起) QCryptographicHash::Algorithm algorithm () const
void reset ()
QByteArray result () const
(從 6.3 起) QByteArrayView resultView () const
(從 6.5 起) void swap (QCryptographicHash & other )
(從 6.5 起) QCryptographicHash & operator= (QCryptographicHash && other )

靜態公共成員

QByteArray hash (QByteArrayView data , QCryptographicHash::Algorithm method )
(從 6.8 起) QByteArrayView hashInto (QSpan<char> buffer , QByteArrayView data , QCryptographicHash::Algorithm method )
(從 6.8 起) QByteArrayView hashInto (QSpan<char> buffer , QSpan<const QByteArrayView> data , QCryptographicHash::Algorithm method )
(從 6.8 起) QByteArrayView hashInto (QSpan<std::byte> buffer , QByteArrayView data , QCryptographicHash::Algorithm method )
(從 6.8 起) QByteArrayView hashInto (QSpan<std::byte> buffer , QSpan<const QByteArrayView> data , QCryptographicHash::Algorithm method )
(從 6.8 起) QByteArrayView hashInto (QSpan<uchar> buffer , QByteArrayView data , QCryptographicHash::Algorithm method )
(從 6.8 起) QByteArrayView hashInto (QSpan<uchar> buffer , QSpan<const QByteArrayView> data , QCryptographicHash::Algorithm method )
int hashLength (QCryptographicHash::Algorithm method )
(從 6.5 起) bool supportsAlgorithm (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
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

成員函數文檔編製

[static noexcept, since 6.8] QByteArrayView QCryptographicHash:: hashInto ( QSpan < char > buffer , QByteArrayView data , QCryptographicHash::Algorithm method )

[static noexcept, since 6.8] QByteArrayView QCryptographicHash:: hashInto ( QSpan < char > buffer , QSpan <const QByteArrayView > data , QCryptographicHash::Algorithm method )

[static noexcept, since 6.8] QByteArrayView QCryptographicHash:: hashInto ( QSpan < std::byte > buffer , QByteArrayView data , QCryptographicHash::Algorithm method )

[static noexcept, since 6.8] QByteArrayView QCryptographicHash:: hashInto ( QSpan < std::byte > buffer , QSpan <const QByteArrayView > data , QCryptographicHash::Algorithm method )

[static noexcept, since 6.8] QByteArrayView QCryptographicHash:: hashInto ( QSpan < uchar > buffer , QByteArrayView data , QCryptographicHash::Algorithm method )

[static noexcept, since 6.8] QByteArrayView QCryptographicHash:: hashInto ( QSpan < uchar > buffer , QSpan <const QByteArrayView > data , QCryptographicHash::Algorithm method )

返迴哈希為 data 使用 method ，使用 buffer to store the result.

若 data is a span, adds all the byte array views to the hash, in the order given.

The return value will be a sub-span of buffer , unless buffer is of insufficient size, in which case a null QByteArrayView 被返迴。

這些函數在 Qt 6.8 引入。

另請參閱 hash ().

[explicit] 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 .

[noexcept, since 6.5] QCryptographicHash:: QCryptographicHash ( QCryptographicHash && other )

Move-constructs a new QCryptographicHash from other .

注意： The moved-from object other is placed in a partially-formed state, in which the only valid operations are destruction and assignment of a new value.

該函數在 Qt 6.5 引入。

[noexcept] QCryptographicHash:: ~QCryptographicHash ()

銷毀對象。

[noexcept] void QCryptographicHash:: addData ( QByteArrayView bytes )

Adds the characters in bytes to the cryptographic hash.

注意： In Qt versions prior to 6.3, this function took QByteArray , not QByteArrayView .

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。

[noexcept, since 6.5] QCryptographicHash::Algorithm QCryptographicHash:: algorithm () const

Returns the algorithm used to generate the cryptographic hash.

該函數在 Qt 6.5 引入。

[static] QByteArray QCryptographicHash:: hash ( QByteArrayView data , QCryptographicHash::Algorithm method )

返迴哈希為 data 使用 method .

注意： In Qt versions prior to 6.3, this function took QByteArray , not QByteArrayView .

另請參閱 hashInto ().

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

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

[noexcept] void QCryptographicHash:: reset ()

重置對象。

QByteArray QCryptographicHash:: result () const

返迴最終的哈希值。

另請參閱 resultView () 和 QByteArray::toHex ().

[noexcept, since 6.3] QByteArrayView QCryptographicHash:: resultView () const

返迴最終的哈希值。

Note that the returned view remains valid only as long as the QCryptographicHash object is not modified by other means.

該函數在 Qt 6.3 引入。

另請參閱 result ().

[static, since 6.5] bool QCryptographicHash:: supportsAlgorithm ( QCryptographicHash::Algorithm method )

Returns whether the selected algorithm method is supported and if result () will return a value when the method 被使用。

注意： OpenSSL will be responsible for providing this information when used as a provider, otherwise true will be returned as the non-OpenSSL implementation doesn't have any restrictions. We return false if we fail to query OpenSSL.

該函數在 Qt 6.5 引入。

[noexcept, since 6.5] void QCryptographicHash:: swap ( QCryptographicHash & other )

Swaps this cryptographic hash with other 。此操作很快且從不失敗。

該函數在 Qt 6.5 引入。

[noexcept, since 6.5] QCryptographicHash &QCryptographicHash:: operator= ( QCryptographicHash && other )

移動賦值 other 到此 QCryptographicHash 實例。

注意： The moved-from object other is placed in a partially-formed state, in which the only valid operations are destruction and assignment of a new value.

該函數在 Qt 6.5 引入。

內容

  1. 公共類型

  2. 公共函數

  3. 靜態公共成員

  4. 詳細描述