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CryptUnprotectData
..msdn Add comment W32 Constants Translate this page |
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Decrypts and does an integrity check of the data in a DATA_BLOB structure. Scoped to local computer, or to user credentials. |
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| Code examples: |
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| Declaration: |
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BOOL WINAPI CryptUnprotectData(
__in DATA_BLOB *pDataIn,
__out_opt LPWSTR *ppszDataDescr,
__in_opt DATA_BLOB *pOptionalEntropy,
__in PVOID pvReserved,
__in_opt CRYPTPROTECT_PROMPTSTRUCT *pPromptStruct,
__in DWORD dwFlags,
__out DATA_BLOB *pDataOut
);
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| FoxPro declaration: |
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DECLARE INTEGER CryptUnprotectData IN crypt32;
INTEGER pDataIn,;
STRING szDataDescr,;
INTEGER pOptionalEntropy,;
INTEGER pvReserved,;
STRING @pPromptStruct,;
LONG dwFlags,;
INTEGER @pDataOut
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| Parameters: |
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pDataIn [in]
A pointer to a DATA_BLOB structure that holds the encrypted data.
ppszDataDescr [out, optional]
A pointer to a string-readable description of the encrypted data included with the encrypted data.
pOptionalEntropy [in, optional]
A pointer to a DATA_BLOB structure that contains a password or other additional entropy used when the data was encrypted.
pPromptStruct [in, optional]
A pointer to a CRYPTPROTECT_PROMPTSTRUCT structure that provides information about where and when prompts are to be displayed.
dwFlags [in]
This parameter can be one of several predefined flags.
pDataOut [out]
A pointer to a DATA_BLOB structure that receives the decrypted data. |
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| Return value: |
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| If the function succeeds, the function returns TRUE. |
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| My comment: |
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When you have finished using sensitive information, clear it from memory by calling the SecureZeroMemory function.
See also: CryptProtectData, CryptProtectMemory, CryptUnprotectMemory |
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| Word Index links for the CryptUnprotectData : |
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| Created: | 2010-08-23 11:10:10 | | Modified: | 2010-08-23 11:14:19 |
Visited in last 7 days: 19 |
