CMSG_HASHED_ENCODE_INFO structure (wincrypt.h)
The CMSG_HASHED_ENCODE_INFO structure is used with hashed messages. It is passed to the CryptMsgOpenToEncode function if the CryptMsgOpenToEncode function's dwMsgType parameter is CMSG_ENVELOPED.
Syntax
typedef struct _CMSG_HASHED_ENCODE_INFO {
DWORD cbSize;
HCRYPTPROV_LEGACY hCryptProv;
CRYPT_ALGORITHM_IDENTIFIER HashAlgorithm;
void *pvHashAuxInfo;
} CMSG_HASHED_ENCODE_INFO, *PCMSG_HASHED_ENCODE_INFO;
Members
cbSize
The size, in bytes, of this structure.
hCryptProv
This member is not used and should be set to NULL.
Windows Server 2003 and Windows XP: Specifies a handle to the cryptographic service provider (CSP) used to do the hash. The hCryptProv private keys are not used.
This member's data type is HCRYPTPROV.
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 to be acquired before doing hash, signature verification, or recipient encryption operations.
HashAlgorithm
A CRYPT_ALGORITHM_IDENTIFIER structure that contains the hash algorithm type and any associated additional parameters.
pvHashAuxInfo
This member is currently not used and must be set to NULL.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Header | wincrypt.h |