CMSG_HASHED_ENCODE_INFO

The CMSG_HASHED_ENCODE_INFO structure is used with hashed messages. This structure is passed to CryptMsgOpenToEncode for a value of CMSG_HASHED in dwMsgType.

typedef struct _CMSG_HASHED_ENCODE_INFO {
    DWORD                      cbSize;
    HCRYPTPROV                 hCryptProv;
    CRYPT_ALGORITHM_IDENTIFIER HashAlgorithm;
    void*                      pvHashAuxInfo;
} CMSG_HASHED_ENCODE_INFO,    *PCMSG_HASHED_ENCODE_INFO;

Members

cbSize: The count of bytes in this data structure.
hCryptProv: Specifies a handle to the cryptographic service provider used to do the hash. The hCryptProv's private keys aren't used.
Unless there is a strong reason for passing in a specific cryptographic provider in hCryptProv, zero should be passed in. Passing in zero causes the default RSA or DSS provider to be acquired before doing hash, signature verification or recipient encryption operations.
HashAlgorithm: A hash algorithm.
pvHashAuxInfo: Currently not used and must be set to NULL in the interim.

CMSG_HASHED_ENCODE_INFO

Members

See Also