CRYPT_HASH_MESSAGE_PARA structure
The CRYPT_HASH_MESSAGE_PARA structure contains data for hashing messages.
Syntax
typedef struct _CRYPT_HASH_MESSAGE_PARA { DWORD cbSize; DWORD dwMsgEncodingType; HCRYPTPROV_LEGACY hCryptProv; CRYPT_ALGORITHM_IDENTIFIER HashAlgorithm; void *pvHashAuxInfo; } CRYPT_HASH_MESSAGE_PARA, *PCRYPT_HASH_MESSAGE_PARA;
Members
- cbSize
-
Size of this structure in bytes.
- dwMsgEncodingType
-
Type of encoding used. It is always acceptable to specify both the certificate and message encoding types by combining them with a bitwise-OR operation as shown in the following example:
X509_ASN_ENCODING | PKCS_7_ASN_ENCODING
Currently defined encoding types are:
- X509_ASN_ENCODING
- PKCS_7_ASN_ENCODING
- hCryptProv
-
This member is not used and should be set to NULL.
Windows Server 2003 and Windows XP: A handle to the cryptographic service provider (CSP) to be used.
Unless there is a strong reason for passing in a specific cryptographic provider in hCryptProv, pass zero to use the default RSA or DSS provider.
This member's data type is HCRYPTPROV.
- HashAlgorithm
-
CRYPT_ALGORITHM_IDENTIFIER containing the algorithm for generating the hash of the message.
- pvHashAuxInfo
-
Not currently used, and must be set to NULL.
Requirements
|
Minimum supported client |
Windows XP [desktop apps only] |
|---|---|
|
Minimum supported server |
Windows Server 2003 [desktop apps only] |
|
Header |
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See also