QPasswordDigestor ¶

概要 ¶

详细描述 ¶

static PySide2.QtNetwork.QPasswordDigestor. deriveKeyPbkdf1 ( algorithm , password , salt , iterations , dkLen ) ¶

参数

• algorithm – Algorithm

• password – QByteArray

• salt – QByteArray

• iterations – int

• dkLen – quint64

返回类型

QByteArray

Returns a hash computed using the PBKDF1-algorithm as defined in RFC 8018 .

The function takes the 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 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 .

另请参阅

deriveKeyPbkdf2 QCryptographicHash hashLength

static PySide2.QtNetwork.QPasswordDigestor. deriveKeyPbkdf2 ( algorithm , password , salt , iterations , dkLen ) ¶

参数

• algorithm – Algorithm

• password – QByteArray

• salt – QByteArray

• iterations – int

• dkLen – quint64

返回类型

QByteArray

Derive a key using the PBKDF2-algorithm as defined in RFC 8018 .

This function takes the data and salt , and then applies HMAC-X, where the X is 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)) .

另请参阅

deriveKeyPbkdf1 QMessageAuthenticationCode QCryptographicHash