QPasswordDigestor 名稱空間包含可以用於生成哈希或鍵的函數。 更多...
| 頭： |
#include <QPasswordDigestor>
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| CMake: |
find_package(Qt6 REQUIRED COMPONENTS Network)
target_link_libraries(mytarget PRIVATE Qt6::Network)
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| qmake: |
QT += network
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| QByteArray | deriveKeyPbkdf1 (QCryptographicHash::Algorithm algorithm , const QByteArray & data , const QByteArray & salt , int iterations , quint64 dkLen ) |
| QByteArray | deriveKeyPbkdf2 (QCryptographicHash::Algorithm algorithm , const QByteArray & data , const QByteArray & salt , int iterations , quint64 dkLen ) |
返迴計算哈希使用 PBKDF1 算法作為定義在 RFC 8018, section 5.1 .
函數接受 data and salt , and then hashes it repeatedly for iterations iterations using the specified hash algorithm . If the resulting hash is longer than dkLen then it is truncated before it is returned.
This function only supports SHA-1 and MD5! The max output size is 160 bits (20 bytes) when using SHA-1, or 128 bits (16 bytes) when using MD5. Specifying a value for dkLen which is greater than this results in a warning and an empty QByteArray is returned. To programmatically check this limit you can use QCryptographicHash::hashLength . Furthermore: the salt must always be 8 bytes long!
注意： This function is provided for use with legacy applications and all new applications are recommended to use PBKDF2 .
另請參閱 deriveKeyPbkdf2 , QCryptographicHash ，和 QCryptographicHash::hashLength .
派生密鑰使用 PBKDF2 算法作為定義在 RFC 8018, section 5.2 .
此函數接受
data
and
salt
，然後應用 HMAC-X，其中 X 是
algorithm
, repeatedly. It internally concatenates intermediate results to the final output until at least
dkLen
amount of bytes have been computed and it will execute HMAC-X
iterations
times each time a concatenation is required. The total number of times it will execute HMAC-X depends on
iterations
,
dkLen
and
algorithm
and can be calculated as
iterations * ceil(dkLen / QCryptographicHash::hashLength(algorithm))
.
另請參閱 deriveKeyPbkdf1 , QMessageAuthenticationCode ，和 QCryptographicHash .
