CryptGetHashParam.md

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Function name : CryptGetHashParam

Group: Cryptography Reference - Library: advapi32

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Retrieves data that governs the operations of a hash object. The actual hash value can be retrieved by using this function.

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Code examples:

How to create MD-5 and SHA-1 hash values from a string

Declaration:

BOOL WINAPI CryptGetHashParam(
	HCRYPTHASH hHash,
	DWORD dwParam,
	BYTE* pbData,
	DWORD* pdwDataLen,
	DWORD dwFlags
);  

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FoxPro declaration:

DECLARE INTEGER CryptGetHashParam IN advapi32;
	INTEGER  hHash,;
	LONG     dwParam,;
	STRING @ pbData,;
	LONG   @ pdwDataLen,;
	LONG     dwFlags  

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Parameters:

hHash [in] Handle of the hash object to be queried.

dwParam [in] Query type.

pbData [out] Pointer to a buffer that receives the specified value data.

pdwDataLen [in, out] Pointer to a DWORD value specifying the size, in bytes, of the pbData buffer.

dwFlags [in] Reserved for future use and must be zero.

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Return value:

If the function succeeds, the return value is TRUE.

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Comments:

Parameter pbData can be NULL to determine the memory size required.

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